1DC2

SOLUTION NMR STRUCTURE OF TUMOR SUPPRESSOR P16INK4A, 20 STRUCTURES


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 60 
  • Conformers Submitted: 20 
  • Selection Criteria: THE CLOSEST TO MEAN STRUCTURE WHICH SHOWS GOOD AGREEMENT WITH THE EXPERIMENTAL RESTRAINTS 

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This is version 1.2 of the entry. See complete history

Literature

Tumor suppressor INK4: refinement of p16INK4A structure and determination of p15INK4B structure by comparative modeling and NMR data.

Yuan, C.Selby, T.L.Li, J.Byeon, I.J.Tsai, M.D.

(2000) Protein Sci. 9: 1120-1128

  • DOI: 10.1110/ps.9.6.1120

  • PubMed Abstract: 
  • Within the tumor suppressor protein INK4 (inhibitor of cyclin-dependent kinase 4) family, p15INK4B is the smallest and the only one whose structure has not been determined previously, probably due to the protein's conformational flexibility and insta ...

    Within the tumor suppressor protein INK4 (inhibitor of cyclin-dependent kinase 4) family, p15INK4B is the smallest and the only one whose structure has not been determined previously, probably due to the protein's conformational flexibility and instability. In this work, multidimensional NMR studies were performed on this protein. The first tertiary structure was built by comparative modeling with p16INK4A as the template, followed by restrained energy minimization with NMR constraints (NOE and H-bonds). For this purpose, the solution structure of pl6INK4A, whose quality was also limited by similar problems, was refined with additional NMR experiments conducted on an 800 MHz spectrometer and by structure-based iterative NOE assignments. The nonhelical regions showed major improvement with root-mean-square deviation (RMSD) improved from 1.23 to 0.68 A for backbone heavy atoms. The completion of p15INK4B coupled with refinement of p16INK4A made it possible to compare the structures of the four INK4 members in depth, and to compare the structures of p16INK4A in the free form and in the p16INK4A-CDK6 complex. This is an important step toward a comprehensive understanding of the precise functional roles of each INK4 member.


    Related Citations: 
    • Tumor Suppressor p16INK4A: Determination of Solution Structure and Analyses of Its Interaction with Cyclin-Dependent Kinase 4
      Byeon, I.-J.,Li, J.,Ericson, K.,Selby, T.L.,Tevelev, A.,Kim, H.J.,O'Maille, P.,Tsai, M.-D.
      (1998) Mol.Cell 1: 421


    Organizational Affiliation

    Department of Chemistry, The Ohio State University, Columbus 43210-1185, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CYCLIN-DEPENDENT KINASE 4 INHIBITOR A (P16INK4A)
A
156Homo sapiensMutation(s): 0 
Gene Names: CDKN2A (CDKN2, MTS1)
Find proteins for P42771 (Homo sapiens)
Go to Gene View: CDKN2A
Go to UniProtKB:  P42771
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 60 
  • Conformers Submitted: 20 
  • Selection Criteria: THE CLOSEST TO MEAN STRUCTURE WHICH SHOWS GOOD AGREEMENT WITH THE EXPERIMENTAL RESTRAINTS 
  • Olderado: 1DC2 Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-12-23
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance