6AAY

the Cas13b binary complex

• PDB DOI: https://doi.org/10.2210/pdb6AAY/pdb
• NAKB: 6AAY

• Classification: RNA BINDING PROTEIN/RNA
• Organism(s): Bergeyella zoohelcum ATCC 43767, Bergeyella zoohelcum
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2018-07-19 Released: 2019-03-13 
• Deposition Author(s): Bo, Z., Weiwei, Y., Yangmiao, Y., Ouyang, S.Y.
• Funding Organization(s): National Science Foundation (China)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.79 Å
• R-Value Free: 
  0.276 (Depositor), 0.290 (DCC) 
• R-Value Work: 
  0.221 (Depositor), 0.230 (DCC) 
• R-Value Observed: 
  0.224 (Depositor) 

Literature

Structural insights into Cas13b-guided CRISPR RNA maturation and recognition.

Zhang, B., Ye, W.W., Ye, Y.M., Zhou, H., Saeed, A.F.U.H., Chen, J., Lin, J.Y., Perculija, V., Chen, Q., Chen, C.J., Chang, M.X., Choudhary, M.I., Ouyang, S.Y.

(2018) Cell Res 28: 1198-1201

• PubMed: 30425321 
• DOI: https://doi.org/10.1038/s41422-018-0109-4
• Primary Citation of Related Structures:  
  6AAY

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Organizational Affiliation: 

The Key Laboratory of Innate Immune Biology of Fujian Province, Biomedical Research Center of South China, College of Life Sciences, Fujian Normal University, Fuzhou, 350117, China.

Biological Assembly 1  

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

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

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 166.66 kDa 
• Atom Count: 11,262 
• Modelled Residue Count: 1,251 
• Deposited Residue Count: 1,291 
• Unique protein chains: 1
• Unique nucleic acid chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Bergeyella zoohelcum Cas13b (R1177A) mutant	A	1,232	Bergeyella zoohelcum ATCC 43767	Mutation(s): 1  Gene Names: HMPREF9699_02005
UniProt
Find proteins for K1LVU1 (Bergeyella zoohelcum ATCC 43767) Explore K1LVU1  Go to UniProtKB:  K1LVU1

Entity ID: 2
Molecule	Chains	Length	Organism	Image
RNA (52-MER)	B	59	Bergeyella zoohelcum

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.79 Å
• R-Value Free:  0.276 (Depositor), 0.290 (DCC) 
• R-Value Work:  0.221 (Depositor), 0.230 (DCC) 
• R-Value Observed: 0.224 (Depositor) 

Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 196.74	α = 90
b = 196.74	β = 90
c = 96.23	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
xia2	data reduction
xia2	data scaling
PHENIX	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2019-03-13 
Deposition Author(s): Bo, Z., Weiwei, Y., Yangmiao, Y., Ouyang, S.Y.

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Funding Organization	Location	Grant Number
National Science Foundation (China)	China	31770948

Revision History  

• Version 1.0: 2019-03-13
  Type: Initial release
  
• Version 1.1: 2024-11-20
  Changes: Data collection, Database references, Structure summary