3AQF

Crystal structure of the human CRLR/RAMP2 extracellular complex

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.222 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history. 


Literature

Structural basis for extracellular interactions between calcitonin receptor-like receptor and receptor activity-modifying protein 2 for adrenomedullin-specific binding

Kusano, S., Kukimoto-Niino, M., Hino, N., Ohsawa, N., Okuda, K., Sakamoto, K., Shirouzu, M., Shindo, T., Yokoyama, S.

(2012) Protein Sci 21: 199-210

  • DOI: 10.1002/pro.2003
  • Primary Citation of Related Structures:  
    3AQE, 3AQF

  • PubMed Abstract: 

    • The calcitonin receptor-like receptor (CRLR), a class B GPCR, forms a heterodimer with receptor activity-modifying protein 2 (RAMP2), and serves as the adrenomedullin (AM) receptor to control neovascularization, while CRLR and RAMP1 form the calcitonin gene-related peptide (CGRP) receptor ...

    The calcitonin receptor-like receptor (CRLR), a class B GPCR, forms a heterodimer with receptor activity-modifying protein 2 (RAMP2), and serves as the adrenomedullin (AM) receptor to control neovascularization, while CRLR and RAMP1 form the calcitonin gene-related peptide (CGRP) receptor. Here, we report the crystal structures of the RAMP2 extracellular domain alone and in the complex with the CRLR extracellular domain. The CRLR-RAMP2 complex exhibits several intermolecular interactions that were not observed in the previously reported CRLR-RAMP1 complex, and thus the shape of the putative ligand-binding pocket of CRLR-RAMP2 is distinct from that of CRLR-RAMP1. The CRLR-RAMP2 interactions were confirmed for the full-length proteins on the cell surface by site-specific photo-crosslinking. Mutagenesis revealed that AM binding requires RAMP2 residues that are not conserved in RAMP1. Therefore, the differences in both the shapes and the key residues of the binding pocket are essential for the ligand specificity.

    Organizational Affiliation: 

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



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Receptor activity-modifying protein 2A91Homo sapiensMutation(s): 0 
Gene Names: RAMP2
UniProt & NIH Common Fund Data Resources
Find proteins for O60895 (Homo sapiens)
Explore O60895 
Go to UniProtKB:  O60895
PHAROS:  O60895
GTEx:  ENSG00000131477
Protein Feature View
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  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Calcitonin gene-related peptide type 1 receptorB121Homo sapiensMutation(s): 0 
Gene Names: CALCRL, CGRPR
UniProt & NIH Common Fund Data Resources
Find proteins for Q16602 (Homo sapiens)
Explore Q16602 
Go to UniProtKB:  Q16602
PHAROS:  Q16602
GTEx:  ENSG00000064989
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE		AL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.222 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 55.424α = 90
b = 55.424β = 90
c = 119.391γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SOLVEphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-11-02
    Type: Initial release
  • Version 1.1: 2012-07-25
    Changes: Database references