3SK7 | pdb_00003sk7

Crystal Structure of V. cholerae SeqA

• PDB DOI: https://doi.org/10.2210/pdb3SK7/pdb

• Classification: REPLICATION INHIBITOR
• Organism(s): Vibrio cholerae NCTC 8457
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2011-06-22 Released: 2012-12-26 
• Deposition Author(s): Chung, Y.S., Guarne, A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 
  0.204 (Depositor), 0.157 (DCC) 
• R-Value Work: 
  0.156 (Depositor), 0.155 (DCC) 
• R-Value Observed: 
  0.159 (Depositor) 

Starting Model: experimental

Literature

Investigating the aggregational property of SeqAvibrio in the absence of the oligomerization domain

Chung, Y.S., Guarne, A.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 generated by PISA (software)

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 26.57 kDa 
• Atom Count: 2,104 
• Modeled Residue Count: 224 
• Deposited Residue Count: 232 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Protein SeqA	A, B	116	Vibrio cholerae NCTC 8457	Mutation(s): 0  Gene Names: A5C_2175, seqA

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
FME	A, B	L-PEPTIDE LINKING	C6 H11 N O3 S		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free:  0.204 (Depositor), 0.157 (DCC) 
• R-Value Work:  0.156 (Depositor), 0.155 (DCC) 
• R-Value Observed: 0.159 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 29.008	α = 90
b = 55.029	β = 90
c = 135.534	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2012-12-26 
Deposition Author(s): Chung, Y.S., Guarne, A.

Revision History  

• Version 1.0: 2012-12-26
  Type: Initial release
  
• Version 1.1: 2014-06-04
  Changes: Atomic model
• Version 1.2: 2023-09-13
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.3: 2024-11-27
  Changes: Structure summary