| Literature DB >> 6247641 |
E T Bucovaz, S J Tarnowski, W C Morrison, R M Macleod, J C Morrison, C M Sobhy, J L Rhoades, J E Fryer, J M Wakim, W D Whybrew.
Abstract
The coenzyme A-synthesizing protein complex (CoA-SPC) is a multienzyme complex of Saccharomyces cerevisiae (Bakers' yeast), which has a molecular weight in excess of 200,000 as determined by Sephadex G-200 column chromatography. This multienzyme complex, which is insoluble in the crude yeast cell lysate, has been purified 229-fold. A cellular component of the yeast cell lysate, referred to as t-Factor, with a molecular weight of 400-1000 and chloride ion are involved in the solubilization of CoA-SPC. The CoA-SPC requires L-cysteine, D-pantothenic acid and ATP as substrates. The terminal CoA-SPC-bound intermediate is dephospho-CoA, which is subsequently phosphorylated and released from the complex as CoA. The sequence of reactions for the synthesis of CoA by the CoA-SPC differs significantly from those previously proposed for other systems. It could be that the reaction sequence is unique for the yeast cell.Entities:
Mesh：
Substances：
Year: 1980 PMID： 6247641 DOI： 10.1007/bf00215301
Source DB: PubMed Journal: Mol Cell Biochem ISSN： 0300-8177 Impact factor: 3.396