Schubot FD, Chen CJ, Rose JP, Wang BC. Crystallization and preliminary X-ray diffraction analysis of the mitochondrial transcription factor sc-mtTFB from Saccharomyces cerevisiae.
Acta Crystallogr D Biol Crystallogr 2000;
56:902-3. [PMID:
10930839 DOI:
10.1107/s0907444900005060]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/1999] [Accepted: 04/03/2000] [Indexed: 11/10/2022]
Abstract
Eukaryotic mitochondria contain a distinct mini-chromosome. In yeast, transcription of the mitochondrial genome is mediated by a nuclear-encoded RNA polymerase consisting of a single polypeptide core enzyme and a specificity factor termed sc-mtTFB which bears some similarity to bacterial sigma-factors. sc-mtTFB from Saccharomyces cerevisiae has been cloned, expressed, purified and crystallized. The crystals belong to the monoclinic space group C2, with unit-cell parameters a = 89.7, b = 44.6, c = 98.9 A, beta = 110 degrees. Based on one molecule per asymmetric unit, the solvent content is estimated to be 48%. Small crystals of dimensions 0.01 x 0.05 x 0.13 mm diffract to at least 2.7 A resolution on a rotating-anode X-ray source.
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