1GCN image
Deposition Date 1977-10-17
Release Date 1977-11-28
Last Version Date 2024-02-07
Entry Detail
PDB ID:
1GCN
Keywords:
HORMONE
Title:
X-RAY ANALYSIS OF GLUCAGON AND ITS RELATIONSHIP TO RECEPTOR BINDING
Biological Source:
Source Organism:
Sus scrofa (Taxon ID: 9823)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
3.00 Å
Space Group:
P 21 3
1GCN validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:GLUCAGON
Gene (Uniprot):GCG
Chain IDs:A
Chain Length:29
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:P01274 Pfam ID:PF00123
Ligand Molecules
NA
Primary Citation
X-ray analysis of glucagon and its relationship to receptor binding.
Nature 257 751 757 (1975)
PMID: 171582 DOI: 10.1038/257751a0

Abstact

X-ray analysis of the pancreatic hormone glucagon shows that in crystals the polypeptide adopts a mainly helical conformation, which is stabilised by hydrophobic interactions between molecules related by threefold symmetry. A model is presented in which the glucagon molecule exists in dilute solutions as an equilibrium population of conformers with little retention of conformers with little retention of structure, and in which the helical conformation is stablised by hydrophobic interactions either as an oligomer or as a complex with the receptor.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
1GCN