7BBL

Structure of human Gemin6/Gemin7/Gemin8 trimeric complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.52 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.208 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Identification and structural analysis of the Schizosaccharomyces pombe SMN complex.

Veepaschit, J.Viswanathan, A.Bordonne, R.Grimm, C.Fischer, U.

(2021) Nucleic Acids Res 49: 7207-7223

  • DOI: 10.1093/nar/gkab158
  • Primary Citation of Related Structures:  
    7BB3, 7BBL

  • PubMed Abstract: 
  • The macromolecular SMN complex facilitates the formation of Sm-class ribonucleoproteins involved in mRNA processing (UsnRNPs). While biochemical studies have revealed key activities of the SMN complex, its structural investigation is lagging behind. Here we report on the identification and structural determination of the SMN complex from the lower eukaryote Schizosaccharomyces pombe, consisting of SMN, Gemin2, 6, 7, 8 and Sm proteins ...

    The macromolecular SMN complex facilitates the formation of Sm-class ribonucleoproteins involved in mRNA processing (UsnRNPs). While biochemical studies have revealed key activities of the SMN complex, its structural investigation is lagging behind. Here we report on the identification and structural determination of the SMN complex from the lower eukaryote Schizosaccharomyces pombe, consisting of SMN, Gemin2, 6, 7, 8 and Sm proteins. The core of the SMN complex is formed by several copies of SMN tethered through its C-terminal alpha-helices arranged with alternating polarity. This creates a central platform onto which Gemin8 binds and recruits Gemins 6 and 7. The N-terminal parts of the SMN molecules extrude via flexible linkers from the core and enable binding of Gemin2 and Sm proteins. Our data identify the SMN complex as a multivalent hub where Sm proteins are collected in its periphery to allow their joining with UsnRNA.


    Organizational Affiliation

    Department of Biochemistry, Biocenter, University of Würzburg, Würzburg 97074, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Gem-associated protein 6A, B [auth C]92Homo sapiensMutation(s): 0 
Gene Names: GEMIN6
UniProt & NIH Common Fund Data Resources
Find proteins for Q8WXD5 (Homo sapiens)
Explore Q8WXD5 
Go to UniProtKB:  Q8WXD5
PHAROS:  Q8WXD5
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Gem-associated protein 7E [auth B], C [auth D]87Homo sapiensMutation(s): 0 
Gene Names: GEMIN7
UniProt & NIH Common Fund Data Resources
Find proteins for Q9H840 (Homo sapiens)
Explore Q9H840 
Go to UniProtKB:  Q9H840
PHAROS:  Q9H840
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Gem-associated protein 8D [auth E], F42Homo sapiensMutation(s): 0 
Gene Names: GEMIN8FAM51A1
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NWZ8 (Homo sapiens)
Explore Q9NWZ8 
Go to UniProtKB:  Q9NWZ8
PHAROS:  Q9NWZ8
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.52 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.208 
  • Space Group: P 2 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 59.88α = 90
b = 80.597β = 90
c = 82.666γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
German Research Foundation (DFG)GermanyFi573/7-2 and 8-2

Revision History  (Full details and data files)

  • Version 1.0: 2021-01-20
    Type: Initial release
  • Version 1.1: 2021-03-31
    Changes: Database references, Derived calculations, Source and taxonomy
  • Version 1.2: 2021-07-28
    Changes: Database references