Benner SA, Gerloff D, Chelvanayagam G. The phospho-beta-galactosidase and synaptotagmin predictions.
Proteins 1995;
23:446-53. [PMID:
8710837 DOI:
10.1002/prot.340230318]
[Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Two bona fide consensus predictions of secondary and tertiary structure in a protein family, made and announced before experimental structures were known, are evaluated in light of the subsequently determined experimental structures. The first, for phospho-beta-galactosidase, identified the core strands of an 8-fold alpha-beta barrel, and identified the 8-fold alpha-beta barrel itself, which was found in the subsequently determined experimental structure to be the core folding domain. The second, for synaptotagmin, identified seven out of eight beta-strands in the structure correctly, missing only a noncore strand. Three preferred "topologies" were selected from several hundred thousand possible topologies of these seven predicted strands using a rule-based analysis. The subsequently determined experimental structure showed that these seven strands in synaptotagmin adopt one of the three preferred topologies. We were unable, however, to identify the correct topology from among these three topologies.
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