1D9S

TUMOR SUPPRESSOR P15(INK4B) STRUCTURE BY COMPARATIVE MODELING AND NMR DATA


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 19 
  • Conformers Submitted: 10 
  • Selection Criteria: STRUCTURES WITH THE LEAST RESTRAINT VIOLATIONS, STRUCTURES WITH THE LOWEST ENERGY 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Tumor suppressor INK4: comparisons of conformational properties between p16(INK4A) and p18(INK4C).

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

(1999) J.Mol.Biol. 294: 201-211

  • DOI: 10.1006/jmbi.1999.3231

  • PubMed Abstract: 
  • The INK4 (inhibitor of cyclin-dependent kinase 4) family consists of four tumor-suppressor proteins: p15(INK4B), p16(INK4A), p18(INK4C), and p19(INK4D). While their sequences and structures are highly homologous, they show appreciable differences in ...

    The INK4 (inhibitor of cyclin-dependent kinase 4) family consists of four tumor-suppressor proteins: p15(INK4B), p16(INK4A), p18(INK4C), and p19(INK4D). While their sequences and structures are highly homologous, they show appreciable differences in conformational flexibility, stability, and aggregation tendency. Here, p16 and p18 were first compared directly by NMR for line broadening and disappearance, then investigated by three different approaches in search of the causes of these differences. From denaturation experiments it was found that both proteins are marginally stable with low denaturation stability (1.94 and 2.98 kcal/mol, respectively). Heteronuclear (1)H-(15)N nuclear Overhauser enhancement measurements revealed very limited conformational flexibility on the pico- to nanosecond time-scale for both p16 and p18. H/(2)H exchange of amide protons monitored by NMR on three proteins (p16, p18 as well as p15), however, revealed markedly different rates in the order p18


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CYCLIN-DEPENDENT KINASE 4 INHIBITOR B
A
136Mus musculusMutation(s): 0 
Gene Names: Cdkn2b
Find proteins for P55271 (Mus musculus)
Go to UniProtKB:  P55271
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 19 
  • Conformers Submitted: 10 
  • Selection Criteria: STRUCTURES WITH THE LEAST RESTRAINT VIOLATIONS, STRUCTURES WITH THE LOWEST ENERGY 
  • Olderado: 1D9S Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-07-28
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance