Source 1primary paper2026MED
Toolkit/DuCV-1 full-length Cap virus-like particle expression construct
DuCV-1 full-length Cap virus-like particle expression construct
Also known as: codon-optimized full-length Cap, full-length Cap
Taxonomy: Mechanism Branch / Architecture. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
Codon-optimized full-length Cap and putative NLS-deleted dCap (residues 1-36) were expressed in Escherichia coli. Full-length Cap self-assembled into 13-17 nm icosahedral VLP, structurally consistent with native virions.
Usefulness & Problems
Why this is useful
This construct expresses full-length DuCV-1 capsid protein in E. coli and supports self-assembly into virus-like particles. The resulting particles are described as 13-17 nm icosahedral VLP consistent with native virions.; prokaryotic production of DuCV-1 VLP; studying DuCV-1 capsid self-assembly
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This construct expresses full-length DuCV-1 capsid protein in E. coli and supports self-assembly into virus-like particles. The resulting particles are described as 13-17 nm icosahedral VLP consistent with native virions.
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prokaryotic production of DuCV-1 VLP
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studying DuCV-1 capsid self-assembly
Problem solved
It provides a route to generate DuCV-1 VLP in a bacterial system, which the paper frames as useful for VLP-based vaccine development.; establishes a prokaryotic expression system for DuCV-1 VLP
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It provides a route to generate DuCV-1 VLP in a bacterial system, which the paper frames as useful for VLP-based vaccine development.
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establishes a prokaryotic expression system for DuCV-1 VLP
Problem links
establishes a prokaryotic expression system for DuCV-1 VLP
LiteratureIt provides a route to generate DuCV-1 VLP in a bacterial system, which the paper frames as useful for VLP-based vaccine development.
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It provides a route to generate DuCV-1 VLP in a bacterial system, which the paper frames as useful for VLP-based vaccine development.
Published Workflows
Objective: Establish a prokaryotic expression system for DuCV-1 virus-like particles and determine whether the putative NLS of Cap is required for protein function and assembly.
Why it works: The workflow compares full-length Cap with an NLS-deleted variant in the same bacterial expression context, then links observed expression, solubility, and assembly differences to a structural model of the capsid.
role of the putative NLS in Cap foldingrole of the putative NLS in inter-subunit interactions at the 2-fold axisrole of the putative NLS in VLP assemblyprokaryotic expression in Escherichia colicomparative analysis of full-length and NLS-deleted constructshomology modeling
Stages
- 1.Construct expression in Escherichia coli(library_build)
This stage establishes the bacterial production system needed to test whether the putative NLS affects Cap behavior.
Selection: Generate comparable full-length and NLS-deleted Cap proteins in a prokaryotic system.
- 2.Comparative functional characterization of expression, solubility, and assembly(functional_characterization)
This stage tests whether the putative NLS is required for productive capsid behavior rather than merely present in the sequence.
Selection: Determine how NLS deletion changes expression, solubility, and VLP assembly relative to full-length Cap.
- 3.Structural interpretation by homology modeling(secondary_characterization)
This stage provides a mechanistic rationale for why the putative NLS affects folding and assembly.
Selection: Interpret the structural basis for the assembly phenotype associated with the putative NLS.
Steps
- 1.Express codon-optimized full-length Cap and NLS-deleted dCap in Escherichia coliengineered comparison constructs
Create matched constructs for testing whether the putative NLS is required for productive Cap behavior in a prokaryotic system.
Expression in the same bacterial host is needed before comparing solubility and assembly outcomes between full-length and NLS-deleted constructs.
- 2.Compare expression and solubility of full-length Cap versus dCapcomparison constructs
Measure whether deleting the putative NLS changes protein yield and solubility before assessing assembly competence.
Expression and solubility differences can explain or contextualize downstream assembly failure.
- 3.Assess VLP assembly of full-length Cap and dCapassembly test constructs
Determine whether the putative NLS is required for self-assembly into DuCV-1 VLP.
After establishing that both constructs are expressed, assembly testing directly addresses the study objective of VLP formation and NLS function.
- 4.Use homology modeling to interpret the structural role of the putative NLS
Explain the observed assembly phenotype by locating how the putative NLS contributes to capsid structure.
Structural modeling is used after the experimental comparison to rationalize why NLS deletion disrupts folding and assembly.
Taxonomy & Function
Primary hierarchy
Mechanism Branch
Architecture: A reusable architecture pattern for arranging parts into an engineered system.
Mechanisms
self-assemblyTechniques
Structural CharacterizationTarget processes
No target processes tagged yet.
Implementation Constraints
cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationoperating role: actuator
The abstract supports a prokaryotic expression setup in Escherichia coli using a codon-optimized full-length Cap sequence. No additional purification tags or cofactors are specified in the provided evidence.; expressed in Escherichia coli; uses codon-optimized full-length Cap sequence
Independent follow-up evidence is still limited. Validation breadth across biological contexts is still narrow. Independent reuse still looks limited, so the evidence base may be fragile.
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Observations
successBacteriaapplication demoEscherichia coli
Inferred from claim cl2 during normalization. Full-length DuCV-1 Cap self-assembled into 13-17 nm icosahedral VLP structurally consistent with native virions. Derived from claim cl2. Quoted text: Full-length Cap self-assembled into 13-17 nm icosahedral VLP, structurally consistent with native virions.
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VLP diameter(13-17)
Supporting Sources
Ranked Claims
Full-length DuCV-1 Cap self-assembled into 13-17 nm icosahedral VLP structurally consistent with native virions.
Full-length Cap self-assembled into 13-17 nm icosahedral VLP, structurally consistent with native virions.
VLP diameter 13-17 nm
Deletion of the putative NLS reduced Cap expression by 50%, reduced solubility from 88% to 32.6%, and abolished VLP assembly.
Deletion of the putative NLS reduced Cap expression by 50%, solubility from 88% to 32.6%, and completely abolished VLP assembly.
expression reduction 50 %solubility 88 %solubility 32.6 %
A prokaryotic expression system for DuCV-1 VLP was established using codon-optimized full-length Cap expressed in Escherichia coli.
This study aimed to establish a prokaryotic expression system for DuCV-1 virus-like particle (VLP)... Codon-optimized full-length Cap ... were expressed in Escherichia coli.
Approval Evidence
1 source2 linked approval claimsfirst-pass slug ducv-1-full-length-cap-virus-like-particle-expression-construct
Codon-optimized full-length Cap and putative NLS-deleted dCap (residues 1-36) were expressed in Escherichia coli. Full-length Cap self-assembled into 13-17 nm icosahedral VLP, structurally consistent with native virions.
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assembly resultsupports
Full-length DuCV-1 Cap self-assembled into 13-17 nm icosahedral VLP structurally consistent with native virions.
Full-length Cap self-assembled into 13-17 nm icosahedral VLP, structurally consistent with native virions.
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engineering outcomesupports
A prokaryotic expression system for DuCV-1 VLP was established using codon-optimized full-length Cap expressed in Escherichia coli.
This study aimed to establish a prokaryotic expression system for DuCV-1 virus-like particle (VLP)... Codon-optimized full-length Cap ... were expressed in Escherichia coli.
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Comparisons
Source-stated alternatives
The paper contrasts this full-length construct with an NLS-deleted dCap variant that does not assemble into VLP.
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The paper contrasts this full-length construct with an NLS-deleted dCap variant that does not assemble into VLP.
Source-backed strengths
self-assembles into 13-17 nm icosahedral VLP; structurally consistent with native virions
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self-assembles into 13-17 nm icosahedral VLP
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structurally consistent with native virions
Compared with DuCV-1 NLS-deleted dCap construct
The paper contrasts this full-length construct with an NLS-deleted dCap variant that does not assemble into VLP.
Shared frame: source-stated alternative in extracted literature
Strengths here: self-assembles into 13-17 nm icosahedral VLP; structurally consistent with native virions.
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The paper contrasts this full-length construct with an NLS-deleted dCap variant that does not assemble into VLP.
Ranked Citations
- 1.