7W5M image
Deposition Date 2021-11-30
Release Date 2022-05-18
Last Version Date 2023-11-29
Entry Detail
PDB ID:
7W5M
Keywords:
CHAPERONE
Title:
Crystal structure of AtNASP in complex of H3 alpha3 helix peptide
Biological Source:
Source Organism:
Arabidopsis thaliana (Taxon ID: 3702)
Homo sapiens (Taxon ID: 9606)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.15 Å
R-Value Free:
0.22
R-Value Work:
0.18
R-Value Observed:
0.18
Space Group:
P 21 21 21
7W5M validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Tetratricopeptide repeat (TPR)-like superfamily protein
Gene (Uniprot):NASP
Chain IDs:A
Chain Length:268
Number of Molecules:1
Biological Source:Arabidopsis thaliana
UniProt ID:Q94K88 Pfam ID:PF10516
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:H3 alpha3 helix peptide
Gene (Uniprot):H3-3A, H3-3B
Chain IDs:B
Chain Length:20
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:P84243
Ligand Molecules
GOL
PG4
SO4
Primary Citation
Structural basis for histone H3 recognition by NASP in Arabidopsis.
J Integr Plant Biol 64 2309 2313 (2022)
PMID: 35587028 DOI: 10.1111/jipb.13277

Abstact

The structural basis for histone recognition by the histone chaperone nuclear autoantigenic sperm protein (NASP) remains largely unclear. Here, we showed that Arabidopsis thaliana AtNASP is a monomer and displays robust nucleosome assembly activity in vitro. Examining the structure of AtNASP complexed with a histone H3 α3 peptide revealed a binding mode that is conserved in human NASP. AtNASP recognizes the H3 N-terminal region distinct from human NASP. Moreover, AtNASP forms a co-chaperone complex with ANTI-SILENCING FUNCTION 1 (ASF1) by binding to the H3 N-terminal region. Therefore, we deciphered the structure of AtNASP and the basis of the AtNASP-H3 interaction.

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Primary Citation of related structures
7W5M