4XTK | pdb_00004xtk

Structure of TM1797, a CAS1 protein from Thermotoga maritima

• PDB DOI: https://doi.org/10.2210/pdb4XTK/pdb
• Entry: 4XTK supersedes: 3LFX

• Classification: HYDROLASE
• Organism(s): Thermotoga maritima MSB8
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2015-01-23 Released: 2015-02-11 
• Deposition Author(s): Petit, P., Beloglazova, N., Skarina, T., Chang, C., Edwards, A., Joachimiak, A., Savchenko, A., Midwest Center for Structural Genomics (MCSG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 
  0.230 (Depositor), 0.230 (DCC) 
• R-Value Work: 
  0.183 (Depositor), 0.190 (DCC) 
• R-Value Observed: 
  0.186 (Depositor) 

Starting Model: experimental

Literature

Crystal structure and nuclease activity of tm1797, a cas1 protein from thermotoga maritima

Beloglazova, N., Skarina, T., Petit, P., Flick, R., Brown, G., Savchenko, A., Yakunin, A.F.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 assigned by authors and generated by PISA (software)

Biological Assembly 3  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 3 assigned by authors and generated by PISA (software)

Biological Assembly 4  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 4 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 309.28 kDa 
• Atom Count: 20,014 
• Modelled Residue Count: 2,466 
• Deposited Residue Count: 2,608 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CRISPR-associated endonuclease Cas1	A, B, C, D, E, F, G, H	326	Thermotoga maritima MSB8	Mutation(s): 0  Gene Names: cas1, TM_1797, ThemaDRAFT_1327 EC: 3.1
UniProt
Find proteins for Q9X2B7 (Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8)) Explore Q9X2B7  Go to UniProtKB:  Q9X2B7

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free:  0.230 (Depositor), 0.230 (DCC) 
• R-Value Work:  0.183 (Depositor), 0.190 (DCC) 
• R-Value Observed: 0.186 (Depositor) 

Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 92.277	α = 93.03
b = 94.555	β = 115.06
c = 106.39	γ = 102.97

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
SCALA	data scaling
MOLREP	phasing
Coot	model building

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-02-11 
Deposition Author(s): Petit, P., Beloglazova, N., Skarina, T., Chang, C., Edwards, A., Joachimiak, A., Savchenko, A., Midwest Center for Structural Genomics (MCSG)
• This entry supersedes: 3LFX

Revision History  

• Version 1.0: 2015-02-11
  Type: Initial release
  
• Version 1.1: 2023-09-27
  Changes: Data collection, Database references, Derived calculations, Refinement description, Source and taxonomy