Solution structure of the fifth cold-shock domain of the human KIAA0885 protein (unr protein)

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations 

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The NMR solution structures of the five constituent cold-shock domains (CSD) of the human UNR (upstream of N-ras) protein.

Goroncy, A.K.Koshiba, S.Tochio, N.Tomizawa, T.Inoue, M.Watanabe, S.Harada, T.Tanaka, A.Ohara, O.Kigawa, T.Yokoyama, S.

(2010) J Struct Funct Genomics 11: 181-188

  • DOI: https://doi.org/10.1007/s10969-010-9081-z
  • Primary Citation of Related Structures:  
    1WFQ, 1X65, 2YTV, 2YTX, 2YTY

  • PubMed Abstract: 

    Upon cold shock, the amounts of most proteins dramatically decrease from normal levels, but those of cold shock proteins (CSPs) and proteins containing cold-shock domains (CSDs) greatly increase. Although their biological function is still not completely clear, cold-shock proteins might control translation via RNA chaperoning. Many cold-shock proteins contain the motifs (Y/F)GFI and (V/F)(V/F)H, which are known as ribonucleoprotein (RNP)-1 and RNP-2 motifs implicated in RNA/DNA binding. We determined the solution NMR structures of all five constituent CSDs of the human UNR (upstream of N-ras) protein. The spatial arrangements of the sidechains in the RNP-1 and RNP-2 motifs are mostly conserved; however, the conformations of the following residues in the first CSD are different: F43 and H45 (the first phenylalanine residue and the histidine residue in the putative binding site RNP-2) and Y30 (the first residue in the putative binding site RNP-1). F43 and H45 affect each other, and H45 is further influenced by C46. The altered binding site of the first CSD, and its putatively enhanced intrinsic stability, may provide an explanation for the observation that the first CSD has 20-fold higher RNA-binding activity than the fifth CSD. It also lends support to the hypothesis that the UNR protein arose by repeated duplication of a protein that originally contained just one CSD, and that the proto-UNR protein acquired cysteine C46 by mutation during evolution.

  • Organizational Affiliation

    RIKEN Systems and Structural Biology Center, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cold shock domain-containing protein E179Homo sapiensMutation(s): 0 
Gene Names: KIAA0885
UniProt & NIH Common Fund Data Resources
Find proteins for O75534 (Homo sapiens)
Explore O75534 
Go to UniProtKB:  O75534
PHAROS:  O75534
GTEx:  ENSG00000009307 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO75534
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations 

Structure Validation

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Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2008-04-08
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance