Toolkit/SpCas9 nucleases

SpCas9 nucleases

Protein Domain·Research·Since 2017

Also known as: enhanced SpCas9 nucleases, high fidelity SpCas9 nucleases

Taxonomy: Mechanism Branch / Component. Workflows sit above the mechanism and technique branches rather than replacing them.

Summary

SpCas9 nucleases in this context are increased-fidelity CRISPR-Cas9 variants generated by combining mutations from eSpCas9 and SpCas9-HF1 into HeFSpCas9 forms. They are designed to preserve RNA-guided DNA cleavage while improving genome-editing specificity in a target-dependent manner.

Usefulness & Problems

Why this is useful

These nucleases are useful for applications requiring higher genome-editing specificity than standard SpCas9, particularly when off-target cleavage must be minimized. The source indicates that optimal use requires matching each target site with an appropriate high-fidelity nuclease variant rather than relying on a single universally best enzyme.

Source:

for highest specificity cleavage, each target needs to be matched with an appropriate high fidelity nuclease

Problem solved

They address the engineering problem of balancing on-target cleavage activity with increased editing fidelity across different genomic targets. The cited work specifically tackles the lack of a single high-fidelity SpCas9 variant that is superior for all targets.

Source:

for highest specificity cleavage, each target needs to be matched with an appropriate high fidelity nuclease

Taxonomy & Function

Primary hierarchy

Mechanism Branch

Component: A low-level protein part used inside a larger architecture that realizes a mechanism.

Techniques

No technique tags yet.

Target processes

No target processes tagged yet.

Implementation Constraints

cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationoperating role: actuatorswitch architecture: cleavage

Construct selection should account for target dependence, because the highest-specificity cleavage requires pairing each target with an appropriate high-fidelity nuclease. Guide design also matters: the source reports that a matching 5' G extension reduces activity more strongly than a mismatching 5' G extension. The provided evidence does not add further implementation details on expression system, delivery, or cofactor requirements.

No single high-fidelity SpCas9 nuclease variant is generally superior in fidelity across targets, which limits one-size-fits-all deployment. In addition, a matching 5' G extension is reported to be more detrimental to activity than a mismatching 5' G extension, indicating guide-format constraints for some targets.

Validation

Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication

Supporting Sources

Ranked Claims

Claim 1activity effectsupports2017Source 1needs review

For the increased-fidelity nucleases, a matching 5' G extension is more detrimental to activity than a mismatching 5' G extension.

a matching 5' G extension being more detrimental to their activities than a mismatching one
Claim 2activity effectsupports2017Source 1needs review

For the increased-fidelity nucleases, a matching 5' G extension is more detrimental to activity than a mismatching 5' G extension.

a matching 5' G extension being more detrimental to their activities than a mismatching one
Claim 3activity effectsupports2017Source 1needs review

For the increased-fidelity nucleases, a matching 5' G extension is more detrimental to activity than a mismatching 5' G extension.

a matching 5' G extension being more detrimental to their activities than a mismatching one
Claim 4activity effectsupports2017Source 1needs review

For the increased-fidelity nucleases, a matching 5' G extension is more detrimental to activity than a mismatching 5' G extension.

a matching 5' G extension being more detrimental to their activities than a mismatching one
Claim 5activity effectsupports2017Source 1needs review

For the increased-fidelity nucleases, a matching 5' G extension is more detrimental to activity than a mismatching 5' G extension.

a matching 5' G extension being more detrimental to their activities than a mismatching one
Claim 6activity effectsupports2017Source 1needs review

For the increased-fidelity nucleases, a matching 5' G extension is more detrimental to activity than a mismatching 5' G extension.

a matching 5' G extension being more detrimental to their activities than a mismatching one
Claim 7activity effectsupports2017Source 1needs review

For the increased-fidelity nucleases, a matching 5' G extension is more detrimental to activity than a mismatching 5' G extension.

a matching 5' G extension being more detrimental to their activities than a mismatching one
Claim 8activity effectsupports2017Source 1needs review

For the increased-fidelity nucleases, a matching 5' G extension is more detrimental to activity than a mismatching 5' G extension.

a matching 5' G extension being more detrimental to their activities than a mismatching one
Claim 9activity effectsupports2017Source 1needs review

For the increased-fidelity nucleases, a matching 5' G extension is more detrimental to activity than a mismatching 5' G extension.

a matching 5' G extension being more detrimental to their activities than a mismatching one
Claim 10activity effectsupports2017Source 1needs review

For the increased-fidelity nucleases, a matching 5' G extension is more detrimental to activity than a mismatching 5' G extension.

a matching 5' G extension being more detrimental to their activities than a mismatching one
Claim 11application guidancesupports2017Source 1needs review

For highest-specificity cleavage, each target should be matched with an appropriate high-fidelity nuclease.

for highest specificity cleavage, each target needs to be matched with an appropriate high fidelity nuclease
Claim 12application guidancesupports2017Source 1needs review

For highest-specificity cleavage, each target should be matched with an appropriate high-fidelity nuclease.

for highest specificity cleavage, each target needs to be matched with an appropriate high fidelity nuclease
Claim 13application guidancesupports2017Source 1needs review

For highest-specificity cleavage, each target should be matched with an appropriate high-fidelity nuclease.

for highest specificity cleavage, each target needs to be matched with an appropriate high fidelity nuclease
Claim 14application guidancesupports2017Source 1needs review

For highest-specificity cleavage, each target should be matched with an appropriate high-fidelity nuclease.

for highest specificity cleavage, each target needs to be matched with an appropriate high fidelity nuclease
Claim 15application guidancesupports2017Source 1needs review

For highest-specificity cleavage, each target should be matched with an appropriate high-fidelity nuclease.

for highest specificity cleavage, each target needs to be matched with an appropriate high fidelity nuclease
Claim 16application guidancesupports2017Source 1needs review

For highest-specificity cleavage, each target should be matched with an appropriate high-fidelity nuclease.

for highest specificity cleavage, each target needs to be matched with an appropriate high fidelity nuclease
Claim 17application guidancesupports2017Source 1needs review

For highest-specificity cleavage, each target should be matched with an appropriate high-fidelity nuclease.

for highest specificity cleavage, each target needs to be matched with an appropriate high fidelity nuclease
Claim 18application guidancesupports2017Source 1needs review

For highest-specificity cleavage, each target should be matched with an appropriate high-fidelity nuclease.

for highest specificity cleavage, each target needs to be matched with an appropriate high fidelity nuclease
Claim 19application guidancesupports2017Source 1needs review

For highest-specificity cleavage, each target should be matched with an appropriate high-fidelity nuclease.

for highest specificity cleavage, each target needs to be matched with an appropriate high fidelity nuclease
Claim 20application guidancesupports2017Source 1needs review

For highest-specificity cleavage, each target should be matched with an appropriate high-fidelity nuclease.

for highest specificity cleavage, each target needs to be matched with an appropriate high fidelity nuclease
Claim 21comparative conclusionsupports2017Source 1needs review

No single high-fidelity SpCas9 nuclease variant is generally superior in fidelity across targets.

No single nuclease variant shows generally superior fidelity
Claim 22comparative conclusionsupports2017Source 1needs review

No single high-fidelity SpCas9 nuclease variant is generally superior in fidelity across targets.

No single nuclease variant shows generally superior fidelity
Claim 23comparative conclusionsupports2017Source 1needs review

No single high-fidelity SpCas9 nuclease variant is generally superior in fidelity across targets.

No single nuclease variant shows generally superior fidelity
Claim 24comparative conclusionsupports2017Source 1needs review

No single high-fidelity SpCas9 nuclease variant is generally superior in fidelity across targets.

No single nuclease variant shows generally superior fidelity
Claim 25comparative conclusionsupports2017Source 1needs review

No single high-fidelity SpCas9 nuclease variant is generally superior in fidelity across targets.

No single nuclease variant shows generally superior fidelity
Claim 26comparative conclusionsupports2017Source 1needs review

No single high-fidelity SpCas9 nuclease variant is generally superior in fidelity across targets.

No single nuclease variant shows generally superior fidelity
Claim 27comparative conclusionsupports2017Source 1needs review

No single high-fidelity SpCas9 nuclease variant is generally superior in fidelity across targets.

No single nuclease variant shows generally superior fidelity
Claim 28comparative conclusionsupports2017Source 1needs review

No single high-fidelity SpCas9 nuclease variant is generally superior in fidelity across targets.

No single nuclease variant shows generally superior fidelity
Claim 29comparative conclusionsupports2017Source 1needs review

No single high-fidelity SpCas9 nuclease variant is generally superior in fidelity across targets.

No single nuclease variant shows generally superior fidelity
Claim 30comparative conclusionsupports2017Source 1needs review

No single high-fidelity SpCas9 nuclease variant is generally superior in fidelity across targets.

No single nuclease variant shows generally superior fidelity
Claim 31engineering resultsupports2017Source 1needs review

HeFSpCas9 variants were generated by combining mutations from eSpCas9 and SpCas9-HF1.

we generated new "Highly enhanced Fidelity" nuclease variants (HeFSpCas9s) containing mutations from both eSpCas9 and SpCas9-HF1
Claim 32engineering resultsupports2017Source 1needs review

HeFSpCas9 variants were generated by combining mutations from eSpCas9 and SpCas9-HF1.

we generated new "Highly enhanced Fidelity" nuclease variants (HeFSpCas9s) containing mutations from both eSpCas9 and SpCas9-HF1
Claim 33engineering resultsupports2017Source 1needs review

HeFSpCas9 variants were generated by combining mutations from eSpCas9 and SpCas9-HF1.

we generated new "Highly enhanced Fidelity" nuclease variants (HeFSpCas9s) containing mutations from both eSpCas9 and SpCas9-HF1
Claim 34engineering resultsupports2017Source 1needs review

HeFSpCas9 variants were generated by combining mutations from eSpCas9 and SpCas9-HF1.

we generated new "Highly enhanced Fidelity" nuclease variants (HeFSpCas9s) containing mutations from both eSpCas9 and SpCas9-HF1
Claim 35engineering resultsupports2017Source 1needs review

HeFSpCas9 variants were generated by combining mutations from eSpCas9 and SpCas9-HF1.

we generated new "Highly enhanced Fidelity" nuclease variants (HeFSpCas9s) containing mutations from both eSpCas9 and SpCas9-HF1
Claim 36engineering resultsupports2017Source 1needs review

HeFSpCas9 variants were generated by combining mutations from eSpCas9 and SpCas9-HF1.

we generated new "Highly enhanced Fidelity" nuclease variants (HeFSpCas9s) containing mutations from both eSpCas9 and SpCas9-HF1
Claim 37engineering resultsupports2017Source 1needs review

HeFSpCas9 variants were generated by combining mutations from eSpCas9 and SpCas9-HF1.

we generated new "Highly enhanced Fidelity" nuclease variants (HeFSpCas9s) containing mutations from both eSpCas9 and SpCas9-HF1
Claim 38engineering resultsupports2017Source 1needs review

HeFSpCas9 variants were generated by combining mutations from eSpCas9 and SpCas9-HF1.

we generated new "Highly enhanced Fidelity" nuclease variants (HeFSpCas9s) containing mutations from both eSpCas9 and SpCas9-HF1
Claim 39engineering resultsupports2017Source 1needs review

HeFSpCas9 variants were generated by combining mutations from eSpCas9 and SpCas9-HF1.

we generated new "Highly enhanced Fidelity" nuclease variants (HeFSpCas9s) containing mutations from both eSpCas9 and SpCas9-HF1
Claim 40engineering resultsupports2017Source 1needs review

HeFSpCas9 variants were generated by combining mutations from eSpCas9 and SpCas9-HF1.

we generated new "Highly enhanced Fidelity" nuclease variants (HeFSpCas9s) containing mutations from both eSpCas9 and SpCas9-HF1
Claim 41mechanistic effectsupports2017Source 1needs review

Mutations in the increased-fidelity SpCas9 variants may reduce cleavage without reducing DNA binding.

the mutations in these variants may diminish the cleavage, but not the DNA-binding, of SpCas9s
Claim 42mechanistic effectsupports2017Source 1needs review

Mutations in the increased-fidelity SpCas9 variants may reduce cleavage without reducing DNA binding.

the mutations in these variants may diminish the cleavage, but not the DNA-binding, of SpCas9s
Claim 43mechanistic effectsupports2017Source 1needs review

Mutations in the increased-fidelity SpCas9 variants may reduce cleavage without reducing DNA binding.

the mutations in these variants may diminish the cleavage, but not the DNA-binding, of SpCas9s
Claim 44mechanistic effectsupports2017Source 1needs review

Mutations in the increased-fidelity SpCas9 variants may reduce cleavage without reducing DNA binding.

the mutations in these variants may diminish the cleavage, but not the DNA-binding, of SpCas9s
Claim 45mechanistic effectsupports2017Source 1needs review

Mutations in the increased-fidelity SpCas9 variants may reduce cleavage without reducing DNA binding.

the mutations in these variants may diminish the cleavage, but not the DNA-binding, of SpCas9s
Claim 46mechanistic effectsupports2017Source 1needs review

Mutations in the increased-fidelity SpCas9 variants may reduce cleavage without reducing DNA binding.

the mutations in these variants may diminish the cleavage, but not the DNA-binding, of SpCas9s
Claim 47mechanistic effectsupports2017Source 1needs review

Mutations in the increased-fidelity SpCas9 variants may reduce cleavage without reducing DNA binding.

the mutations in these variants may diminish the cleavage, but not the DNA-binding, of SpCas9s
Claim 48mechanistic effectsupports2017Source 1needs review

Mutations in the increased-fidelity SpCas9 variants may reduce cleavage without reducing DNA binding.

the mutations in these variants may diminish the cleavage, but not the DNA-binding, of SpCas9s
Claim 49mechanistic effectsupports2017Source 1needs review

Mutations in the increased-fidelity SpCas9 variants may reduce cleavage without reducing DNA binding.

the mutations in these variants may diminish the cleavage, but not the DNA-binding, of SpCas9s
Claim 50mechanistic effectsupports2017Source 1needs review

Mutations in the increased-fidelity SpCas9 variants may reduce cleavage without reducing DNA binding.

the mutations in these variants may diminish the cleavage, but not the DNA-binding, of SpCas9s
Claim 51method frameworksupports2017Source 1needs review

The paper provides a framework for generating new nuclease variants for targets that currently lack a matching optimal nuclease and a simple means for identifying the optimal nuclease when accurate target-ranking prediction tools are absent.

We provide here a framework for generating new nuclease variants for targets that currently have no matching optimal nuclease, and offer a simple mean for identifying the optimal nuclease for targets in the absence of accurate target-ranking prediction tools
Claim 52method frameworksupports2017Source 1needs review

The paper provides a framework for generating new nuclease variants for targets that currently lack a matching optimal nuclease and a simple means for identifying the optimal nuclease when accurate target-ranking prediction tools are absent.

We provide here a framework for generating new nuclease variants for targets that currently have no matching optimal nuclease, and offer a simple mean for identifying the optimal nuclease for targets in the absence of accurate target-ranking prediction tools
Claim 53method frameworksupports2017Source 1needs review

The paper provides a framework for generating new nuclease variants for targets that currently lack a matching optimal nuclease and a simple means for identifying the optimal nuclease when accurate target-ranking prediction tools are absent.

We provide here a framework for generating new nuclease variants for targets that currently have no matching optimal nuclease, and offer a simple mean for identifying the optimal nuclease for targets in the absence of accurate target-ranking prediction tools
Claim 54method frameworksupports2017Source 1needs review

The paper provides a framework for generating new nuclease variants for targets that currently lack a matching optimal nuclease and a simple means for identifying the optimal nuclease when accurate target-ranking prediction tools are absent.

We provide here a framework for generating new nuclease variants for targets that currently have no matching optimal nuclease, and offer a simple mean for identifying the optimal nuclease for targets in the absence of accurate target-ranking prediction tools
Claim 55method frameworksupports2017Source 1needs review

The paper provides a framework for generating new nuclease variants for targets that currently lack a matching optimal nuclease and a simple means for identifying the optimal nuclease when accurate target-ranking prediction tools are absent.

We provide here a framework for generating new nuclease variants for targets that currently have no matching optimal nuclease, and offer a simple mean for identifying the optimal nuclease for targets in the absence of accurate target-ranking prediction tools
Claim 56method frameworksupports2017Source 1needs review

The paper provides a framework for generating new nuclease variants for targets that currently lack a matching optimal nuclease and a simple means for identifying the optimal nuclease when accurate target-ranking prediction tools are absent.

We provide here a framework for generating new nuclease variants for targets that currently have no matching optimal nuclease, and offer a simple mean for identifying the optimal nuclease for targets in the absence of accurate target-ranking prediction tools
Claim 57method frameworksupports2017Source 1needs review

The paper provides a framework for generating new nuclease variants for targets that currently lack a matching optimal nuclease and a simple means for identifying the optimal nuclease when accurate target-ranking prediction tools are absent.

We provide here a framework for generating new nuclease variants for targets that currently have no matching optimal nuclease, and offer a simple mean for identifying the optimal nuclease for targets in the absence of accurate target-ranking prediction tools
Claim 58method frameworksupports2017Source 1needs review

The paper provides a framework for generating new nuclease variants for targets that currently lack a matching optimal nuclease and a simple means for identifying the optimal nuclease when accurate target-ranking prediction tools are absent.

We provide here a framework for generating new nuclease variants for targets that currently have no matching optimal nuclease, and offer a simple mean for identifying the optimal nuclease for targets in the absence of accurate target-ranking prediction tools
Claim 59method frameworksupports2017Source 1needs review

The paper provides a framework for generating new nuclease variants for targets that currently lack a matching optimal nuclease and a simple means for identifying the optimal nuclease when accurate target-ranking prediction tools are absent.

We provide here a framework for generating new nuclease variants for targets that currently have no matching optimal nuclease, and offer a simple mean for identifying the optimal nuclease for targets in the absence of accurate target-ranking prediction tools
Claim 60method frameworksupports2017Source 1needs review

The paper provides a framework for generating new nuclease variants for targets that currently lack a matching optimal nuclease and a simple means for identifying the optimal nuclease when accurate target-ranking prediction tools are absent.

We provide here a framework for generating new nuclease variants for targets that currently have no matching optimal nuclease, and offer a simple mean for identifying the optimal nuclease for targets in the absence of accurate target-ranking prediction tools
Claim 61optimization goalsupports2017Source 1needs review

The paper concerns crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage.

Claim 62optimization goalsupports2017Source 1needs review

The paper concerns crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage.

Claim 63optimization goalsupports2017Source 1needs review

The paper concerns crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage.

Claim 64optimization goalsupports2017Source 1needs review

The paper concerns crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage.

Claim 65optimization goalsupports2017Source 1needs review

The paper concerns crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage.

Claim 66optimization goalsupports2017Source 1needs review

The paper concerns crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage.

Claim 67optimization goalsupports2017Source 1needs review

The paper concerns crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage.

Claim 68optimization goalsupports2017Source 1needs review

The paper concerns crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage.

Claim 69optimization goalsupports2017Source 1needs review

The paper concerns crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage.

Claim 70optimization goalsupports2017Source 1needs review

The paper concerns crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage.

Claim 71optimization goalsupports2017Source 1needs review

The paper concerns crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage.

Claim 72optimization goalsupports2017Source 1needs review

The paper concerns crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage.

Claim 73optimization goalsupports2017Source 1needs review

The paper concerns crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage.

Claim 74optimization goalsupports2017Source 1needs review

The paper concerns crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage.

Claim 75optimization goalsupports2017Source 1needs review

The paper concerns crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage.

Claim 76optimization goalsupports2017Source 1needs review

The paper concerns crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage.

Claim 77optimization goalsupports2017Source 1needs review

The paper concerns crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage.

Claim 78specificity improvementsupports2017Source 1needs review

HeFSpCas9 variants show substantially improved specificity for targets where eSpCas9 and SpCas9-HF1 have higher off-target propensity.

HeFSpCas9s exhibit substantially improved specificity specifically for those targets for which eSpCas9 and SpCas9-HF1 have higher off-target propensity
Claim 79specificity improvementsupports2017Source 1needs review

HeFSpCas9 variants show substantially improved specificity for targets where eSpCas9 and SpCas9-HF1 have higher off-target propensity.

HeFSpCas9s exhibit substantially improved specificity specifically for those targets for which eSpCas9 and SpCas9-HF1 have higher off-target propensity
Claim 80specificity improvementsupports2017Source 1needs review

HeFSpCas9 variants show substantially improved specificity for targets where eSpCas9 and SpCas9-HF1 have higher off-target propensity.

HeFSpCas9s exhibit substantially improved specificity specifically for those targets for which eSpCas9 and SpCas9-HF1 have higher off-target propensity
Claim 81specificity improvementsupports2017Source 1needs review

HeFSpCas9 variants show substantially improved specificity for targets where eSpCas9 and SpCas9-HF1 have higher off-target propensity.

HeFSpCas9s exhibit substantially improved specificity specifically for those targets for which eSpCas9 and SpCas9-HF1 have higher off-target propensity
Claim 82specificity improvementsupports2017Source 1needs review

HeFSpCas9 variants show substantially improved specificity for targets where eSpCas9 and SpCas9-HF1 have higher off-target propensity.

HeFSpCas9s exhibit substantially improved specificity specifically for those targets for which eSpCas9 and SpCas9-HF1 have higher off-target propensity
Claim 83specificity improvementsupports2017Source 1needs review

HeFSpCas9 variants show substantially improved specificity for targets where eSpCas9 and SpCas9-HF1 have higher off-target propensity.

HeFSpCas9s exhibit substantially improved specificity specifically for those targets for which eSpCas9 and SpCas9-HF1 have higher off-target propensity
Claim 84specificity improvementsupports2017Source 1needs review

HeFSpCas9 variants show substantially improved specificity for targets where eSpCas9 and SpCas9-HF1 have higher off-target propensity.

HeFSpCas9s exhibit substantially improved specificity specifically for those targets for which eSpCas9 and SpCas9-HF1 have higher off-target propensity
Claim 85specificity improvementsupports2017Source 1needs review

HeFSpCas9 variants show substantially improved specificity for targets where eSpCas9 and SpCas9-HF1 have higher off-target propensity.

HeFSpCas9s exhibit substantially improved specificity specifically for those targets for which eSpCas9 and SpCas9-HF1 have higher off-target propensity
Claim 86specificity improvementsupports2017Source 1needs review

HeFSpCas9 variants show substantially improved specificity for targets where eSpCas9 and SpCas9-HF1 have higher off-target propensity.

HeFSpCas9s exhibit substantially improved specificity specifically for those targets for which eSpCas9 and SpCas9-HF1 have higher off-target propensity
Claim 87specificity improvementsupports2017Source 1needs review

HeFSpCas9 variants show substantially improved specificity for targets where eSpCas9 and SpCas9-HF1 have higher off-target propensity.

HeFSpCas9s exhibit substantially improved specificity specifically for those targets for which eSpCas9 and SpCas9-HF1 have higher off-target propensity
Claim 88target dependencesupports2017Source 1needs review

Targets can be ranked by cleavability and off-target effects as manifested by the increased-fidelity nucleases.

There is also a ranking among the targets by their cleavability and off-target effects manifested by the increased fidelity nucleases
Claim 89target dependencesupports2017Source 1needs review

Targets can be ranked by cleavability and off-target effects as manifested by the increased-fidelity nucleases.

There is also a ranking among the targets by their cleavability and off-target effects manifested by the increased fidelity nucleases
Claim 90target dependencesupports2017Source 1needs review

Targets can be ranked by cleavability and off-target effects as manifested by the increased-fidelity nucleases.

There is also a ranking among the targets by their cleavability and off-target effects manifested by the increased fidelity nucleases
Claim 91target dependencesupports2017Source 1needs review

Targets can be ranked by cleavability and off-target effects as manifested by the increased-fidelity nucleases.

There is also a ranking among the targets by their cleavability and off-target effects manifested by the increased fidelity nucleases
Claim 92target dependencesupports2017Source 1needs review

Targets can be ranked by cleavability and off-target effects as manifested by the increased-fidelity nucleases.

There is also a ranking among the targets by their cleavability and off-target effects manifested by the increased fidelity nucleases
Claim 93target dependencesupports2017Source 1needs review

Targets can be ranked by cleavability and off-target effects as manifested by the increased-fidelity nucleases.

There is also a ranking among the targets by their cleavability and off-target effects manifested by the increased fidelity nucleases
Claim 94target dependencesupports2017Source 1needs review

Targets can be ranked by cleavability and off-target effects as manifested by the increased-fidelity nucleases.

There is also a ranking among the targets by their cleavability and off-target effects manifested by the increased fidelity nucleases
Claim 95target dependencesupports2017Source 1needs review

Targets can be ranked by cleavability and off-target effects as manifested by the increased-fidelity nucleases.

There is also a ranking among the targets by their cleavability and off-target effects manifested by the increased fidelity nucleases
Claim 96target dependencesupports2017Source 1needs review

Targets can be ranked by cleavability and off-target effects as manifested by the increased-fidelity nucleases.

There is also a ranking among the targets by their cleavability and off-target effects manifested by the increased fidelity nucleases
Claim 97target dependencesupports2017Source 1needs review

Targets can be ranked by cleavability and off-target effects as manifested by the increased-fidelity nucleases.

There is also a ranking among the targets by their cleavability and off-target effects manifested by the increased fidelity nucleases
Claim 98usage constraintsupports2017Source 1needs review

The three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers.

These three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers
Claim 99usage constraintsupports2017Source 1needs review

The three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers.

These three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers
Claim 100usage constraintsupports2017Source 1needs review

The three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers.

These three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers
Claim 101usage constraintsupports2017Source 1needs review

The three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers.

These three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers
Claim 102usage constraintsupports2017Source 1needs review

The three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers.

These three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers
Claim 103usage constraintsupports2017Source 1needs review

The three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers.

These three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers
Claim 104usage constraintsupports2017Source 1needs review

The three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers.

These three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers
Claim 105usage constraintsupports2017Source 1needs review

The three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers.

These three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers
Claim 106usage constraintsupports2017Source 1needs review

The three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers.

These three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers
Claim 107usage constraintsupports2017Source 1needs review

The three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers.

These three increased-fidelity nucleases can routinely be used only with perfectly matching 20 nucleotide-long spacers

Approval Evidence

1 source1 linked approval claimfirst-pass slug spcas9-nucleases
Crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage

Source:

optimization goalsupports

The paper concerns crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage.

Source:

Comparisons

Source-backed strengths

The tool class provides increased-fidelity SpCas9 variants assembled from eSpCas9 and SpCas9-HF1 mutations to optimize specificity and cleavage. The source further supports a practical design principle: different targets can benefit from different high-fidelity variants, enabling target-specific optimization.

Source:

No single nuclease variant shows generally superior fidelity

Source:

we generated new "Highly enhanced Fidelity" nuclease variants (HeFSpCas9s) containing mutations from both eSpCas9 and SpCas9-HF1

Source:

The paper concerns crossing enhanced and high fidelity SpCas9 nucleases to optimize specificity and cleavage.

SpCas9 nucleases and anion channelrhodopsins address a similar problem space.

Shared frame: same top-level item type; shared mechanisms: photocleavage

Strengths here: looks easier to implement in practice.

Compared with AsLOV2-Jα

SpCas9 nucleases and AsLOV2-Jα address a similar problem space.

Shared frame: same top-level item type; shared mechanisms: photocleavage

Relative tradeoffs: appears more independently replicated.

Compared with SpCas9-HF1

SpCas9 nucleases and SpCas9-HF1 address a similar problem space.

Shared frame: same top-level item type; shared mechanisms: photocleavage

Ranked Citations

  1. 1.
    StructuralSource 1Genome biology2017Claim 9Claim 9Claim 9

    Extracted from this source document.