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General method for the isolation and analysis of polynucleotide fragments cross-linked to protein

Journal Article · · Sov. J. Bioorg. Chem. (Engl. Transl.); (United States)
OSTI ID:5280799
A general method is proposed for the isolation and sequencing of fragments of polynucleotides cross-linked to a definite protein among multicomponent nucleoproteins. The method can be used for initially unlabeled complexes regardless of the method of forming the cross-linkages. With the aid of this method, a fragment of the 16S RNA covalently cross-linked to the S7 protein under the action of ultraviolet radiation (254 nm) on the 30S subunit of E. coli ribosomes has been isolated. The primary structure of this fragment has been determined (CUACAAUG) and it has been established that the S7 protein is covalently bound (cross-linked) on the irradiation of the free 30S subunit with the U/sup 1239/ residue of the 16S RNA, which agrees with results obtained previously.
Research Organization:
M. M. Shemyakin Institute of Bioorganic Chemistry, Moscow (USSR)
OSTI ID:
5280799
Journal Information:
Sov. J. Bioorg. Chem. (Engl. Transl.); (United States), Journal Name: Sov. J. Bioorg. Chem. (Engl. Transl.); (United States) Vol. 11:10; ISSN SJBCD
Country of Publication:
United States
Language:
English