Suhadolnik RJ, Li SW, Sobol RW, Varnum JM. 2',5' A synthetase: allosteric activation by fructose 1,6-bisphosphate.
Biochem Biophys Res Commun 1990;
169:1198-203. [PMID:
2363721 DOI:
10.1016/0006-291x(90)92023-s]
[Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Fructose 1,6-bisphosphate (fru-1,6-P2), but not other glycolytic intermediates, activates highly purified 2',5' A synthetases from rabbit reticulocyte lysates and from 2',5'-ADP-agarose purified extracts of interferon-treated HeLa cells without the addition of dsRNA. The 2',5' A was structurally and biologically identical to authentic 2',5' A. Micrococcal nuclease inhibited the activation of 2',5' A synthetase by poly(I)-poly(C), but did not affect activation by fru-1,6-P2. Addition of fru-1,6-P2 aldolase prevented the activation of 2',5' A synthetase by fru-1,6-P2.
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