3WA8 | pdb_00003wa8

Crystal structure of M. ruber CasB

• PDB DOI: https://doi.org/10.2210/pdb3WA8/pdb

• Classification: RNA BINDING PROTEIN
• Organism(s): Meiothermus ruber DSM 1279
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2013-04-28 Released: 2014-04-30 
• Deposition Author(s): Yuan, Y.A., Yuan, Z.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 
  0.259 (Depositor), 0.250 (DCC) 
• R-Value Work: 
  0.208 (Depositor), 0.210 (DCC) 
• R-Value Observed: 
  0.210 (Depositor) 

Literature

Structural insights into crRNA G-rich sequence binding and R-loop formation facilitated by Meiothermus ruber CasB

Yuan, Y.A., Yuan, Z.

To be published.

Biological Assembly 1  

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

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

Biological Assembly 2  

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

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

Macromolecule Content 

• Total Structure Weight: 48.87 kDa 
• Atom Count: 2,972 
• Modeled Residue Count: 354 
• Deposited Residue Count: 410 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CRISPR-associated protein, Cse2 family	A, B	205	Meiothermus ruber DSM 1279	Mutation(s): 0  Gene Names: Mrub_3018
UniProt
Find proteins for D3PQC9 (Meiothermus ruber (strain ATCC 35948 / DSM 1279 / VKM B-1258 / 21)) Explore D3PQC9  Go to UniProtKB:  D3PQC9

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HG	C [auth A], D [auth A], E [auth B], F [auth B]	MERCURY (II) ION Hg BQPIGGFYSBELGY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free:  0.259 (Depositor), 0.250 (DCC) 
• R-Value Work:  0.208 (Depositor), 0.210 (DCC) 
• R-Value Observed: 0.210 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 71.823	α = 90
b = 75.383	β = 90
c = 112.671	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
SHARP	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-04-30 
Deposition Author(s): Yuan, Y.A., Yuan, Z.

Revision History  

• Version 1.0: 2014-04-30
  Type: Initial release
  
• Version 1.1: 2024-03-20
  Changes: Data collection, Database references, Derived calculations