| Literature DB >> 24179 |
J Tang, M N James, I N Hsu, J A Jenkins, T L Blundell.
Abstract
X-ray studies of acid proteases indicate a bilobal structure with a well defined active site cleft. An intramolecular twofold symmetry axis relates two topologically similar domains and the active site residues. A possible mechanism for evolution by gene duplication, divergence and gene fusion is presented.Mesh:
Substances:
Year: 1978 PMID: 24179 DOI: 10.1038/271618a0
Source DB: PubMed Journal: Nature ISSN: 0028-0836 Impact factor: 49.962