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Human U1 snRNP-specific C protein: Complete cDNA and protein sequence and identification of a multigene family in mammals

Journal Article · · Nucleic Acids Research; (UK)

A complementary DNA clone for the human U1 snRNP-specific C protein has been isolated. The nucleotide sequence of the 733 bp cDNA insert includes a 15 bp 5{prime}-untranslated region, an open reading frame of 477 bp corresponding to 159 amino acids (M{sub r}=17,373 D), and a 223 bp 3{prime}-untranslated region. The identity of the clone was confirmed by in vitro translation of hybrid-selected mRNA or an RNA transcript synthesized from the cDNA. The in vitro synthesized C protein has a slightly greater mobility on SDS-polyacrylamide gels, indicating that the in vivo product is post-translationally modified. Analysis of genomic DNA restriction enzyme digests shows hybridizing fragments in the genome of all vertebrate classes. The results are consistent with multi-copy representation of the C protein gene in mammals, whereas in the other vertebrate classes the related protein seems to be encoded by a single-copy gene.

OSTI ID:
6949195
Journal Information:
Nucleic Acids Research; (UK), Journal Name: Nucleic Acids Research; (UK) Vol. 16:17; ISSN 0305-1048; ISSN NARHA
Country of Publication:
United States
Language:
English