2NS2

Crystal Structure of Spindlin1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.225 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of human spindlin1. Tandem tudor-like domains for cell cycle regulation

Zhao, Q.Qin, L.Jiang, F.Wu, B.Yue, W.Xu, F.Rong, Z.Yuan, H.Xie, X.Gao, Y.Bai, C.Bartlam, M.Pei, X.Rao, Z.

(2007) J.Biol.Chem. 282: 647-656

  • DOI: 10.1074/jbc.M604029200

  • PubMed Abstract: 
  • Spindlin1, a meiotic spindle-binding protein that is highly expressed in ovarian cancer cells, was first identified as a gene involved in gametogenesis. It appeared to be a target for cell cycle-dependent phosphorylation and was demonstrated to distu ...

    Spindlin1, a meiotic spindle-binding protein that is highly expressed in ovarian cancer cells, was first identified as a gene involved in gametogenesis. It appeared to be a target for cell cycle-dependent phosphorylation and was demonstrated to disturb the cell cycle. Here we report the crystal structure of human spindlin1 to 2.2A of resolution, representing the first three-dimensional structure from the spin/ssty (Y-linked spermiogenesis-specific transcript) gene family. The refined structure, containing three repeats of five/four anti-parallel beta-strands, exhibits a novel arrangement of tandem Tudor-like domains. Two phosphate ions, chelated by Thr-95 and other residues, appear to stabilize the long loop between domains I and II, which might mediate the cell cycle regulation activity of spindlin1. Flow cytometry experiments indicate that cells expressing spindlin1 display a different cell cycle distribution in mitosis, whereas those expressing a T95A mutant, which had a great decrease in phosphorous content, have little effect on the cell cycle. We further identified associations of spindlin1 with nucleic acid to provide a biochemical basis for its cell cycle regulation and other functions.


    Organizational Affiliation

    Tsinghua-Institute of Biophysics Joint Research Group for Structural Biology, Tsinghua University, Beijing 100084, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Spindlin-1
A, B
242Homo sapiensMutation(s): 0 
Gene Names: SPIN1 (OCR, SPIN)
Find proteins for Q9Y657 (Homo sapiens)
Go to Gene View: SPIN1
Go to UniProtKB:  Q9Y657
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.225 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 40.793α = 90.00
b = 84.876β = 90.00
c = 136.567γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
CNSrefinement
HKL-2000data scaling
HKL-2000data collection
CNSphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-11-28
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance