Toolkit/domain fusion

domain fusion

Engineering Method·Research·Since 2018

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

Summary

Domain fusion is a protein engineering method in which protein domains are fused or split to improve existing protein functions or create novel functions. In the supplied evidence, it is described as a general strategy for expanding CRISPR-Cas9 applications.

Usefulness & Problems

Why this is useful

This method is useful because it provides a general route to alter or extend protein function, including in CRISPR-Cas9 systems. The cited context links such engineering strategies to applications spanning gene therapy, gene regulation, epigenome modification, and chromosome imaging.

Source:

CRISPR-Cas9 has been used in a wide variety of applications ranging from basic science to the clinic, such as gene therapy, gene regulation, modifying epigenomes, and imaging chromosomes.

Problem solved

In the supplied evidence, domain fusion is relevant to addressing limitations that restrict broader CRISPR-Cas9 use. These limitations include aberrant off-target activity, strict protospacer-adjacent motif dependence, and the large size of Cas9 that complicates delivery.

Source:

CRISPR-Cas9 has been used in a wide variety of applications ranging from basic science to the clinic, such as gene therapy, gene regulation, modifying epigenomes, and imaging chromosomes.

Taxonomy & Function

Primary hierarchy

Technique Branch

Method: A concrete method used to build, optimize, or evolve an engineered system.

Target processes

No target processes tagged yet.

Implementation Constraints

The evidence only states that protein functions can be improved or newly developed through domain fusion or splitting. It does not provide construct architecture, linker design, host system, delivery modality, or assay details.

The supplied evidence does not provide a specific fused construct, quantitative performance data, or direct validation outcomes for any one domain-fusion design. It also does not specify which domain combinations solve off-targeting, PAM restriction, or delivery constraints.

Validation

Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication

Supporting Sources

Ranked Claims

Claim 1application scopesupports2018Source 1needs review

CRISPR-Cas9 has been used across applications including gene therapy, gene regulation, epigenome modification, and chromosome imaging.

CRISPR-Cas9 has been used in a wide variety of applications ranging from basic science to the clinic, such as gene therapy, gene regulation, modifying epigenomes, and imaging chromosomes.
Claim 2impactsupports2018Source 1needs review

These Cas9 limitations hinder the use of CRISPR for disease treatment and wider biotechnological applications.

These obstacles hinder the use of CRISPR for disease treatment and in wider biotechnological applications.
Claim 3limitationsupports2018Source 1needs review

Cas9 can exhibit aberrant off-target activity.

(ii) aberrant off-target activity
Claim 4limitationsupports2018Source 1needs review

Cas9 has a strict dependence on a protospacer-adjacent motif sequence.

some limitations have also been reported, for instance (i) a strict dependence on a protospacer-adjacent motif (PAM) sequence
Claim 5limitationsupports2018Source 1needs review

Cas9 lacks sufficient modulation of protein binding and endonuclease activity for precise spatiotemporal control.

(iv) lack of modulation of protein binding and endonuclease activity, which is crucial for precise spatiotemporal control of gene expression or genome editing
Claim 6limitationsupports2018Source 1needs review

The large size of Cas9 creates problems for CRISPR delivery.

(iii) the large size of Cas9 is problematic for CRISPR delivery
Claim 7review focussupports2018Source 1needs review

The review emphasizes domain fusion or splitting, rational design, and directed evolution as protein-engineering strategies for expanding SpCas9 versatility.

Here, recent protein-engineering approaches for expanding the versatility of the Streptococcus pyogenes Cas9 (SpCas9) is reviewed, with an emphasis on studies that improve or develop novel protein functions through domain fusion or splitting, rational design, and directed evolution.
Claim 8review focussupports2018Source 1needs review

The review emphasizes domain fusion or splitting, rational design, and directed evolution as protein-engineering strategies for expanding SpCas9 versatility.

Here, recent protein-engineering approaches for expanding the versatility of the Streptococcus pyogenes Cas9 (SpCas9) is reviewed, with an emphasis on studies that improve or develop novel protein functions through domain fusion or splitting, rational design, and directed evolution.
Claim 9review focussupports2018Source 1needs review

The review emphasizes domain fusion or splitting, rational design, and directed evolution as protein-engineering strategies for expanding SpCas9 versatility.

Here, recent protein-engineering approaches for expanding the versatility of the Streptococcus pyogenes Cas9 (SpCas9) is reviewed, with an emphasis on studies that improve or develop novel protein functions through domain fusion or splitting, rational design, and directed evolution.
Claim 10review focussupports2018Source 1needs review

The review emphasizes domain fusion or splitting, rational design, and directed evolution as protein-engineering strategies for expanding SpCas9 versatility.

Here, recent protein-engineering approaches for expanding the versatility of the Streptococcus pyogenes Cas9 (SpCas9) is reviewed, with an emphasis on studies that improve or develop novel protein functions through domain fusion or splitting, rational design, and directed evolution.
Claim 11review focussupports2018Source 1needs review

The review emphasizes domain fusion or splitting, rational design, and directed evolution as protein-engineering strategies for expanding SpCas9 versatility.

Here, recent protein-engineering approaches for expanding the versatility of the Streptococcus pyogenes Cas9 (SpCas9) is reviewed, with an emphasis on studies that improve or develop novel protein functions through domain fusion or splitting, rational design, and directed evolution.
Claim 12review focussupports2018Source 1needs review

The review emphasizes domain fusion or splitting, rational design, and directed evolution as protein-engineering strategies for expanding SpCas9 versatility.

Here, recent protein-engineering approaches for expanding the versatility of the Streptococcus pyogenes Cas9 (SpCas9) is reviewed, with an emphasis on studies that improve or develop novel protein functions through domain fusion or splitting, rational design, and directed evolution.
Claim 13review focussupports2018Source 1needs review

The review emphasizes domain fusion or splitting, rational design, and directed evolution as protein-engineering strategies for expanding SpCas9 versatility.

Here, recent protein-engineering approaches for expanding the versatility of the Streptococcus pyogenes Cas9 (SpCas9) is reviewed, with an emphasis on studies that improve or develop novel protein functions through domain fusion or splitting, rational design, and directed evolution.
Claim 14strategy overviewsupports2018Source 1needs review

Protein-engineering approaches are presented as solutions to overcome Cas9 limitations and generate more robust and efficient DNA manipulation tools.

Protein-engineering approaches offer solutions to overcome the limitations of Cas9 and generate robust and efficient tools for customized DNA manipulation.
Claim 15strategy overviewsupports2018Source 1needs review

Protein-engineering approaches are presented as solutions to overcome Cas9 limitations and generate more robust and efficient DNA manipulation tools.

Protein-engineering approaches offer solutions to overcome the limitations of Cas9 and generate robust and efficient tools for customized DNA manipulation.
Claim 16strategy overviewsupports2018Source 1needs review

Protein-engineering approaches are presented as solutions to overcome Cas9 limitations and generate more robust and efficient DNA manipulation tools.

Protein-engineering approaches offer solutions to overcome the limitations of Cas9 and generate robust and efficient tools for customized DNA manipulation.
Claim 17strategy overviewsupports2018Source 1needs review

Protein-engineering approaches are presented as solutions to overcome Cas9 limitations and generate more robust and efficient DNA manipulation tools.

Protein-engineering approaches offer solutions to overcome the limitations of Cas9 and generate robust and efficient tools for customized DNA manipulation.
Claim 18strategy overviewsupports2018Source 1needs review

Protein-engineering approaches are presented as solutions to overcome Cas9 limitations and generate more robust and efficient DNA manipulation tools.

Protein-engineering approaches offer solutions to overcome the limitations of Cas9 and generate robust and efficient tools for customized DNA manipulation.
Claim 19strategy overviewsupports2018Source 1needs review

Protein-engineering approaches are presented as solutions to overcome Cas9 limitations and generate more robust and efficient DNA manipulation tools.

Protein-engineering approaches offer solutions to overcome the limitations of Cas9 and generate robust and efficient tools for customized DNA manipulation.
Claim 20strategy overviewsupports2018Source 1needs review

Protein-engineering approaches are presented as solutions to overcome Cas9 limitations and generate more robust and efficient DNA manipulation tools.

Protein-engineering approaches offer solutions to overcome the limitations of Cas9 and generate robust and efficient tools for customized DNA manipulation.

Approval Evidence

1 source2 linked approval claimsfirst-pass slug domain-fusion
studies that improve or develop novel protein functions through domain fusion or splitting

Source:

review focussupports

The review emphasizes domain fusion or splitting, rational design, and directed evolution as protein-engineering strategies for expanding SpCas9 versatility.

Here, recent protein-engineering approaches for expanding the versatility of the Streptococcus pyogenes Cas9 (SpCas9) is reviewed, with an emphasis on studies that improve or develop novel protein functions through domain fusion or splitting, rational design, and directed evolution.

Source:

strategy overviewsupports

Protein-engineering approaches are presented as solutions to overcome Cas9 limitations and generate more robust and efficient DNA manipulation tools.

Protein-engineering approaches offer solutions to overcome the limitations of Cas9 and generate robust and efficient tools for customized DNA manipulation.

Source:

Comparisons

Source-backed strengths

The evidence supports domain fusion and domain splitting as flexible strategies for improving existing protein functions or generating novel ones. It is presented as broadly applicable within efforts to expand CRISPR-Cas9 functionality across multiple use contexts.

Ranked Citations

  1. 1.
    StructuralSource 1International Journal of Genomics2018Claim 1Claim 2Claim 3

    Seeded from load plan for claim cl7. Extracted from this source document.