The reactivity of sulfhydryl groups of yeast DNA dependent RNA polymerase I

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The reactivity of sulfhydryl groups of yeast DNA dependent RNA polymerase I.

The number of reactive cysteine residues of yeast RNA polymerase I was determined and their function was studied using parachloromercury benzoate (pCMB), dithiobisnitrobenzoate (DTNB) and N-ethyl-maleimide (NEM) as modifying agents. By treatment with DTNB about 45 sulfhydryl groups react in the presence of 8M urea. Under non-denaturing conditions only 20 sulfhydryl groups are reactive with pCMB...

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ژورنال

عنوان ژورنال: Nucleic Acids Research

سال: 1982

ISSN: 0305-1048,1362-4962

DOI: 10.1093/nar/10.17.5149