Macromolecule Content

• Total Structure Weight: 3.91 kDa 
• Atom Count: 267 
• Modelled Residue Count: 34 
• Deposited Residue Count: 34 
• Unique protein chains: 1

1MR0

SOLUTION NMR STRUCTURE OF AGRP(87-120; C105A)

• DOI: 10.2210/pdb1MR0/pdb
• Entry: 1MR0 supersedes: 1MC6

• Classification: SIGNALING PROTEIN
• Mutation(s): Yes 


• Deposited: 2002-09-17 Released: 2002-10-02 
• Deposition Author(s): Jackson, P.J., Mcnulty, J.C., Yang, Y.K., Thompson, D.A., Chai, B., Gantz, I., Barsh, G.S., Millhauser, G.M.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 1000 
• Conformers Submitted: 40 
• Selection Criteria: target function 

Literature

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: 7565-7572

• PubMed: 12056887 
• DOI: 10.1021/bi012000x
• Primary Citation of Related Structures:  
  1MR0


• PubMed Abstract: 
  

The agouti-related protein (AGRP) is an endogenous antagonist of the melanocortin receptors MC3R and MC4R found in the hypothalamus and exhibits potent orexigenic activity. The cysteine-rich C-terminal domain of this protein, corresponding to AGRP(87-132), exhibits receptor binding affinity and antagonism equivalent to that of the full-length protein. The NMR structure of this active domain was recently determined and suggested that melanocortin receptor contacts were made primarily by two loops presented by a well-structured cystine knot domain within AGRP(87-132) [McNulty et al. (2001) Biochemistry 40, 15520-15527]. This hypothesis is tested here with NMR structure and activity studies of a 34-residue AGRP analogue designed to contain only the cystine knot domain. The designed miniprotein folds to a homogeneous product, retains the desired cystine knot architecture, functions as an antagonist, and maintains the melanocortin receptor pharmacological profile of AGRP(87-132). The AGRP-like activity of this molecule supports the hypothesis that indeed the cystine knot region possesses the melanocortin receptor contact points. Moreover, this potent AGRP analogue is synthetically accessible, may serve in the development of therapeutics for the treatment of diseases related to energy balance. and may also find use as a new reagent for probing melanocortin receptor structure and function.

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Related Citations: 

• High Resolution NMR Structure of the Chemically-Synthesized Melanocortin Receptor Binding Domain of Agrp(87-132) of the Agouti-Related Protein.
  Mcnulty, J.C., Thompson, D.A., Bolin, K.A., Wilken, J., Barsh, G.S., Millhauser, G.M.
  (2001) Biochemistry 40: 15520

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
AGOUTI RELATED PROTEIN	A	34	N/A	Mutation(s): 1
Find proteins for O00253 (Homo sapiens) Explore O00253  Go to UniProtKB:  O00253
NIH Common Fund Data Resources
PHAROS:  O00253 GTEx:  ENSG00000159723

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 1000 
• Conformers Submitted: 40 
• Selection Criteria: target function 
• OLDERADO: 1MR0 Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-09-17 
• Released Date: 2002-10-02 
Deposition Author(s): Jackson, P.J., Mcnulty, J.C., Yang, Y.K., Thompson, D.A., Chai, B., Gantz, I., Barsh, G.S., Millhauser, G.M.
• This entry supersedes: 1MC6

Revision History  

• Version 1.0: 2002-10-02
  Type: Initial release
  
• Version 1.1: 2008-04-28
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance