1Y7K

NMR structure family of Human Agouti Signalling Protein (80-132: Q115Y, S124Y)


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 1000 
  • Conformers Submitted: 21 
  • Selection Criteria: target function 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structures of the agouti signaling protein.

McNulty, J.C.Jackson, P.J.Thompson, D.A.Chai, B.Gantz, I.Barsh, G.S.Dawson, P.E.Millhauser, G.L.

(2005) J.Mol.Biol. 346: 1059-1070

  • DOI: 10.1016/j.jmb.2004.12.030
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Expression of the agouti signaling protein (ASIP) during hair growth produces the red/yellow pigment pheomelanin. ASIP, and its neuropeptide homolog the agouti-related protein (AgRP) involved in energy balance, are novel, paracrine signaling molecule ...

    Expression of the agouti signaling protein (ASIP) during hair growth produces the red/yellow pigment pheomelanin. ASIP, and its neuropeptide homolog the agouti-related protein (AgRP) involved in energy balance, are novel, paracrine signaling molecules that act as inverse agonists at distinct subsets of melanocortin receptors. Ubiquitous ASIP expression in mice gives rise to a pleiotropic phenotype characterized by a uniform yellow coat color, obesity, overgrowth, and metabolic derangements similar to type II diabetes in humans. Here we report the synthesis and NMR structure of ASIP's active, cysteine-rich, C-terminal domain. ASIP adopts the inhibitor cystine knot fold and, along with AgRP, are the only known mammalian proteins in this structure class. Moreover, ASIP populates two distinct conformers resulting from a cis peptide bond at Pro102-Pro103 and a coexistence of cis/trans isomers of Ala104-Pro105. Pharmacologic studies of Pro-->Ala mutants demonstrate that the minor conformation with two cis peptide bonds is responsible for activity at all MCRs. The loop containing the heterogeneous Ala-Pro peptide bond is conserved in mammals, and suggests that ASIP is either trapped by evolution in this unusual configuration or possesses function outside of strict MCR antagonism.


    Related Citations: 
    • High-resolution NMR structure of the chemically-synthesized melanocortin receptor binding domain AGRP(87-132) of the agouti-related protein
      McNulty, J.C.,Thompson, D.A.,Bolin, K.A.,Wilken, J.,Barsh, G.S.,Millhauser, G.L.
      (2001) Biochemistry 40: 15520
    • Design, pharmacology, and NMR structure of a minimized cystine knot with agouti-related protein activity
      Jackson, P.J.,McNulty, J.C.,Yang, Y.K.,Thompson, D.A.,Chai, B.,Gantz, I.,Barsh, G.S.,Millhauser, G.L.
      (2002) Biochemistry 41: 7565


    Organizational Affiliation

    Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95064, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Agouti Signaling Protein
A
53Homo sapiensMutation(s): 2 
Gene Names: ASIP (AGTI, AGTIL, ASP)
Find proteins for P42127 (Homo sapiens)
Go to Gene View: ASIP
Go to UniProtKB:  P42127
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 1000 
  • Conformers Submitted: 21 
  • Selection Criteria: target function 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-02-15
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance