Biological Assembly 1  

 3D View: Structure

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 18.84 kDa 
• Atom Count: 1319 
• Residue Count: 168 
• Unique protein chains: 1

2RR6

Solution structure of the leucine rich repeat of human acidic leucine-rich nuclear phosphoprotein 32 family member B

• DOI: 10.2210/pdb2RR6/pdb

• Classification: GENE REGULATION
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 2010-05-25 Released: 2010-06-09 
• Deposition Author(s): Tochio, N., Umehara, T., Tsuda, K., Koshiba, S., Harada, T., Watanabe, S., Tanaka, A., Kigawa, T., Yokoyama, S.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: target function 

Literature

Solution structure of histone chaperone ANP32B: interaction with core histones H3-H4 through its acidic concave domain.

Tochio, N., Umehara, T., Munemasa, Y., Suzuki, T., Sato, S., Tsuda, K., Koshiba, S., Kigawa, T., Nagai, R., Yokoyama, S.

(2010) J Mol Biol 401: 97-114

• PubMed: 20538007 
• DOI: 10.1016/j.jmb.2010.06.005
• Primary Citation of Related Structures:  
  2RR6, 2ELL


• PubMed Abstract: 
  

Eukaryotic gene expression is regulated by histone deposition onto and eviction from nucleosomes, which are mediated by several chromatin-modulating factors. Among them, histone chaperones are key factors that facilitate nucleosome assembly. Acidic nuclear phosphoprotein 32B (ANP32B) belongs to the ANP32 family, which shares N-terminal leucine-rich repeats (LRRs) and a C-terminal variable anionic region. The C-terminal region functions as an inhibitor of histone acetylation, but the functional roles of the LRR domain in chromatin regulation have remained elusive. Here, we report that the LRR domain of ANP32B possesses histone chaperone activity and forms a curved structure with a parallel beta-sheet on the concave side and mostly helical elements on the convex side. Our analyses revealed that the interaction of ANP32B with the core histones H3-H4 occurs on its concave side, and both the acidic and hydrophobic residues that compose the concave surface are critical for histone binding. These results provide a structural framework for understanding the functional mechanisms of acidic histone chaperones.

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Organizational Affiliation: 

RIKEN Systems and Structural Biology Center, 1-7-22 Suehiro-cho, Tsurumi, Yokohama 230-0045, Japan.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Acidic leucine-rich nuclear phosphoprotein 32 family member B	A	168	Homo sapiens	Mutation(s): 0  Gene Names: ANP32B, APRIL, PHAPI2
Find proteins for Q92688 (Homo sapiens) Explore Q92688  Go to UniProtKB:  Q92688
NIH Common Fund Data Resources
PHAROS:  Q92688 GTEx:  ENSG00000136938

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: target function 
• OLDERADO: 2RR6 Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2010-05-25 
• Released Date: 2010-06-09 
Deposition Author(s): Tochio, N., Umehara, T., Tsuda, K., Koshiba, S., Harada, T., Watanabe, S., Tanaka, A., Kigawa, T., Yokoyama, S.

Revision History 

• Version 1.0: 2010-06-09
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance