3X1Z

Ras-related protein Rap1B(T65A) with GppNHp


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.25 Å
  • R-Value Free: 0.172 
  • R-Value Work: 0.145 
  • R-Value Observed: 0.147 

wwPDB Validation 3D Report Full Report



Literature

The structure and conformational switching of Rap1B

Noguchi, H.Ikegami, T.Nagadoi, A.Kamatari, Y.O.Park, S.Y.Tame, J.R.Unzai, S.

(2015) Biochem Biophys Res Commun 462: 46-51

  • DOI: 10.1016/j.bbrc.2015.04.103
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Rap1B is a small GTPase involved in the regulation of numerous cellular processes including synaptic plasticity, one of the bases of memory. Like other members of the Ras family, the active GTP-bound form of Rap1B can bind to a large number of effect ...

    Rap1B is a small GTPase involved in the regulation of numerous cellular processes including synaptic plasticity, one of the bases of memory. Like other members of the Ras family, the active GTP-bound form of Rap1B can bind to a large number of effector proteins and so transmit signals to downstream components of the signaling pathways. The structure of Rap1B bound only to a nucleotide has yet to be solved, but might help reveal an inactive conformation that can be stabilized by a small molecule drug. Unlike other Ras family proteins such as H-Ras and Rap2A, Rap1B crystallizes in an intermediate state when bound to a non-hydrolyzable GTP analog. Comparison with H-Ras and Rap2A reveals conservative mutations relative to Rap1B, distant from the bound nucleotide, which control how readily the protein may adopt the fully activated form in the presence of GTP. High resolution crystallographic structures of mutant proteins show how these changes may influence the hydrogen bonding patterns of the key switch residues.


    Organizational Affiliation

    Graduate School of Medical Life Science, Yokohama City University, 1-7-29 Suehiro, Yokohama, Kanagawa 230-0045, Japan. Electronic address: unzai@tsurumi.yokohama-cu.ac.jp.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ras-related protein Rap-1bA, B167Rattus norvegicusMutation(s): 1 
Gene Names: Rap1b
Find proteins for Q62636 (Rattus norvegicus)
Explore Q62636 
Go to UniProtKB:  Q62636
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GNP
Query on GNP

Download CCD File 
A, B
PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER
C10 H17 N6 O13 P3
UQABYHGXWYXDTK-UUOKFMHZSA-N
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.25 Å
  • R-Value Free: 0.172 
  • R-Value Work: 0.145 
  • R-Value Observed: 0.147 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 37.42α = 90
b = 59.04β = 93.68
c = 68.07γ = 90
Software Package:
Software NamePurpose
MOLREPphasing
PHENIXrefinement
MOSFLMdata reduction
Aimlessdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-06-03
    Type: Initial release