6IGX

Crystal structure of human CAP-G in complex with CAP-H

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.215 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Structural basis of HEAT-kleisin interactions in the human condensin I subcomplex.

Hara, K., Kinoshita, K., Migita, T., Murakami, K., Shimizu, K., Takeuchi, K., Hirano, T., Hashimoto, H.

(2019) EMBO Rep 20

  • DOI: 10.15252/embr.201847183
  • Primary Citation of Related Structures:  
    6IGX

  • PubMed Abstract: 

    • Condensin I is a multi-protein complex that plays an essential role in mitotic chromosome assembly and segregation in eukaryotes. It is composed of five subunits: two SMC (SMC2 and SMC4), a kleisin (CAP-H), and two HEAT-repeat (CAP-D2 and CAP-G) subunits ...

    Condensin I is a multi-protein complex that plays an essential role in mitotic chromosome assembly and segregation in eukaryotes. It is composed of five subunits: two SMC (SMC2 and SMC4), a kleisin (CAP-H), and two HEAT-repeat (CAP-D2 and CAP-G) subunits. Although balancing acts of the two HEAT-repeat subunits have been demonstrated to enable this complex to support the dynamic assembly of chromosomal axes in vertebrate cells, its underlying mechanisms remain poorly understood. Here, we report the crystal structure of a human condensin I subcomplex comprising hCAP-G and hCAP-H. hCAP-H binds to the concave surfaces of a harp-shaped HEAT-repeat domain of hCAP-G. Physical interaction between hCAP-G and hCAP-H is indeed essential for mitotic chromosome assembly recapitulated in Xenopus egg cell-free extracts. Furthermore, this study reveals that the human CAP-G-H subcomplex has the ability to interact with not only double-stranded DNA, but also single-stranded DNA, suggesting functional divergence of the vertebrate condensin I complex in proper mitotic chromosome assembly.

    Organizational Affiliation: 

    Department of Physical Biochemistry, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Condensin complex subunit 3 B, D839Homo sapiensMutation(s): 0 
Gene Names: NCAPG, CAPG, NYMEL3
Find proteins for Q9BPX3 (Homo sapiens)
Explore Q9BPX3 
Go to UniProtKB:  Q9BPX3
NIH Common Fund Data Resources
PHAROS:  Q9BPX3
GTEx:  ENSG00000109805
Protein Feature View
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  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Condensin complex subunit 2 A, C57Homo sapiensMutation(s): 0 
Gene Names: NCAPH, BRRN, BRRN1, CAPH, KIAA0074
Find proteins for Q15003 (Homo sapiens)
Explore Q15003 
Go to UniProtKB:  Q15003
NIH Common Fund Data Resources
PHAROS:  Q15003
GTEx:  ENSG00000121152
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EPE
Query on EPE
Download Ideal Coordinates CCD File 
D
4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID
C8 H18 N2 O4 S
JKMHFZQWWAIEOD-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.215 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 122.433α = 90
b = 61.998β = 93.47
c = 130.885γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHENIXphasing
Cootmodel building

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2019-03-13
    Type: Initial release
  • Version 1.1: 2019-03-27
    Changes: Data collection, Database references
  • Version 1.2: 2019-05-22
    Changes: Data collection, Database references