5GVA

WD40 domain of human AND-1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.851 Å
  • R-Value Free: 0.188 
  • R-Value Work: 0.170 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The structure and polymerase-recognition mechanism of the crucial adaptor protein AND-1 in the human replisome

Guan, C.Li, J.Sun, D.Liu, Y.Liang, H.

(2017) J. Biol. Chem. 292: 9627-9636

  • DOI: 10.1074/jbc.M116.758524
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • DNA replication in eukaryotic cells is performed by a multiprotein complex called the replisome, which consists of helicases, polymerases, and adaptor molecules. Human acidic nucleoplasmic DNA-binding protein 1 (AND-1), also known as WD repeat and hi ...

    DNA replication in eukaryotic cells is performed by a multiprotein complex called the replisome, which consists of helicases, polymerases, and adaptor molecules. Human acidic nucleoplasmic DNA-binding protein 1 (AND-1), also known as WD repeat and high mobility group (HMG)-box DNA-binding protein 1 (WDHD1), is an adaptor molecule crucial for DNA replication. Although structural information for the AND-1 yeast ortholog is available, the mechanistic details for how human AND-1 protein anchors the lagging-strand DNA polymerase α (pol α) to the DNA helicase complex (Cdc45-MCM2-7-GINS, CMG) await elucidation. Here, we report the structures of the N-terminal WD40 and SepB domains of human AND-1, as well as a biochemical analysis of the C-terminal HMG domain. We show that AND-1 exists as a homotrimer mediated by the SepB domain. Mutant study results suggested that a positively charged groove within the SepB domain provides binding sites for pol α. Different from its ortholog protein in budding yeast, human AND-1 is recruited to the CMG complex, mediated by unknown participants other than Go Ichi Ni San. In addition, we show that AND-1 binds to DNA in vitro, using its C-terminal HMG domain. In conclusion, our findings provide important insights into the mechanistic details of human AND-1 function, advancing our understanding of replisome formation during eukaryotic replication.


    Organizational Affiliation

    From the National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road, Chaoyang District, Beijing 100101 and.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
WD repeat and HMG-box DNA-binding protein 1
A
344Homo sapiensMutation(s): 0 
Gene Names: WDHD1 (AND1)
Find proteins for O75717 (Homo sapiens)
Go to Gene View: WDHD1
Go to UniProtKB:  O75717
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.851 Å
  • R-Value Free: 0.188 
  • R-Value Work: 0.170 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 79.895α = 90.00
b = 79.895β = 90.00
c = 163.744γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
PHENIXmodel building
HKL-2000data processing
PHENIXrefinement
DENZOdata reduction
SHELXDEphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2016-09-04 
  • Released Date: 2017-04-19 
  • Deposition Author(s): Guan, C.C., Li, J.

Revision History 

  • Version 1.0: 2017-04-19
    Type: Initial release
  • Version 1.1: 2017-06-21
    Type: Database references