5E5B

Crystal structure of Human Spt16 N-terminal domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.84 Å
  • R-Value Free: 0.176 
  • R-Value Work: 0.156 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of the human histone chaperone FACT Spt16 N-terminal domain.

Marciano, G.Huang, D.T.

(2016) Acta Crystallogr.,Sect.F 72: 121-128

  • DOI: 10.1107/S2053230X15024565

  • PubMed Abstract: 
  • The histone chaperone FACT plays an important role in facilitating nucleosome assembly and disassembly during transcription. FACT is a heterodimeric complex consisting of Spt16 and SSRP1. The N-terminal domain of Spt16 resembles an inactive aminopept ...

    The histone chaperone FACT plays an important role in facilitating nucleosome assembly and disassembly during transcription. FACT is a heterodimeric complex consisting of Spt16 and SSRP1. The N-terminal domain of Spt16 resembles an inactive aminopeptidase. How this domain contributes to the histone chaperone activity of FACT remains elusive. Here, the crystal structure of the N-terminal domain (NTD) of human Spt16 is reported at a resolution of 1.84 Å. The structure adopts an aminopeptidase-like fold similar to those of the Saccharomyces cerevisiae and Schizosaccharomyces pombe Spt16 NTDs. Isothermal titration calorimetry analyses show that human Spt16 NTD binds histones H3/H4 with low-micromolar affinity, suggesting that Spt16 NTD may contribute to histone binding in the FACT complex. Surface-residue conservation and electrostatic analysis reveal a conserved acidic patch that may be involved in histone binding.


    Organizational Affiliation

    Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Glasgow G61 1BD, Scotland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FACT complex subunit SPT16
A
431Homo sapiensMutation(s): 0 
Gene Names: SUPT16H (FACT140, FACTP140)
Find proteins for Q9Y5B9 (Homo sapiens)
Go to Gene View: SUPT16H
Go to UniProtKB:  Q9Y5B9
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.84 Å
  • R-Value Free: 0.176 
  • R-Value Work: 0.156 
  • Space Group: F 4 3 2
Unit Cell:
Length (Å)Angle (°)
a = 246.570α = 90.00
b = 246.570β = 90.00
c = 246.570γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
Aimlessdata scaling
xia2data reduction
PDB_EXTRACTdata extraction
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-02-10
    Type: Initial release
  • Version 1.1: 2016-07-27
    Type: Database references