Mapping the functional surface of insulin by design: structure and function of a novel A-chain analogue.
Hua, Q.X., Hu, S.Q., Frank, B.H., Jia, W., Chu, Y.C., Wang, S.H., Burke, G.T., Katsoyannis, P.G., Weiss, M.A.(1996) J Mol Biol 264: 390-403
- PubMed: 8951384 
- DOI: 10.1006/jmbi.1996.0648
- Primary Citation of Related Structures:  
1VKT, 2JMN - PubMed Abstract: 
Functional surfaces of a protein are often mapped by combination of X-ray crystallography and mutagenesis. Such studies of insulin have yielded paradoxical results, suggesting that the native state is inactive and reorganizes on receptor binding. Of particular interest is the N-terminal alpha-helix of the A-chain ...