4XYI

Mis16 with H4 peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.203 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Mis16 Independently Recognizes Histone H4 and the CENP-ACnp1-Specific Chaperone Scm3sp.

An, S.Kim, H.Cho, U.S.

(2015) J Mol Biol 427: 3230-3240

  • DOI: 10.1016/j.jmb.2015.08.022
  • Primary Citation of Related Structures:  
    4XYH, 4XYI

  • PubMed Abstract: 
  • CENP-A is a centromere-specific histone H3 variant that is required for kinetochore assembly and accurate chromosome segregation. For it to function properly, CENP-A must be specifically localized to centromeres. In fission yeast, Scm3sp and the Mis1 ...

    CENP-A is a centromere-specific histone H3 variant that is required for kinetochore assembly and accurate chromosome segregation. For it to function properly, CENP-A must be specifically localized to centromeres. In fission yeast, Scm3sp and the Mis18 complex, composed of Mis16, Eic1, and Mis18, function as a CENP-A(Cnp1)-specific chaperone and a recruiting factor, respectively, and together ensure accurate delivery of CENP-A(Cnp1) to centromeres. Although how Scm3sp specifically recognizes CENP-A(Cnp1) has been revealed recently, the recruiting mechanism of CENP-A(Cnp1) via the Mis18 complex remains unknown. In this study, we have determined crystal structures of Schizosaccharomyces japonicus Mis16 alone and in complex with the helix 1 of histone H4 (H4α1). Crystal structures followed by mutant analysis and affinity pull-downs have revealed that Mis16 recognizes both H4α1 and Scm3sp independently within the CENP-A(Cnp1)/H4:Scm3sp complex. This observation suggests that Mis16 gains CENP-A(Cnp1) specificity by recognizing both Scm3sp and histone H4. Our studies provide insights into the molecular mechanisms underlying specific recruitment of CENP-A(Cnp1)/H4:Scm3sp into centromeres.


    Organizational Affiliation

    Department of Biological Chemistry, University of Michigan Medical School, 1150 West Medical Center Drive, SPC 5606, Ann Arbor, MI 48109, USA. Electronic address: uhnsoo@med.umich.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Kinetochore protein Mis16A430Schizosaccharomyces japonicus yFS275Mutation(s): 0 
Gene Names: SJAG_03867
Find proteins for B6K598 (Schizosaccharomyces japonicus (strain yFS275 / FY16936))
Explore B6K598 
Go to UniProtKB:  B6K598
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Histone H4B103Schizosaccharomyces japonicus yFS275Mutation(s): 0 
Gene Names: SJAG_00303SJAG_00336SJAG_03542
Find proteins for B6JV96 (Schizosaccharomyces japonicus (strain yFS275 / FY16936))
Explore B6JV96 
Go to UniProtKB:  B6JV96
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.203 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 136.226α = 90
b = 136.226β = 90
c = 65.536γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-02-03
    Type: Initial release
  • Version 1.1: 2016-02-17
    Changes: Database references
  • Version 1.2: 2018-06-13
    Changes: Data collection, Database references, Derived calculations