title: Proteins neighboring 18S rRNA conserved sequences 609-618 and 1047-1061 within the 40S human ribosomal subunit.
abstract: The structure of human 40S ribosomal subunits has been probed by a cross-linking strategy based on the use of oligonucleotide derivatives that modify proteins in the vicinity of specific 18S rRNA sequences. The oligonucleotide derivatives carried a p-azidoperfluorobenzamide group at the 5' ends and were complementary to 18S rRNA sequences 609-618 and 1047-1061, homologous to the highly conserved regions designated as the "530 stem-loop" and "790 stem-loop", respectively, in Escherichia coli 16S rRNA. Ribosomal proteins surrounding these sequences were the main targets of the cross-linking. Proteins S3 and S5 were cross-linked to the derivative complementary to the sequence 609-618, and proteins S2 and S3 were modified by the derivative complementary to the sequence 1047-1061. Cross-linking was not affected by binding of 40S subunits to either poly(U) or poly(U) and Phe-tRNA(Phe).
authors.affiliation: Novosibirsk Institute of Bioorganic Chemistry, Siberian Branch of the Russian Academy of Sciences.
authors.forename: A A
authors.initials: AA
authors.lastname: Malygin
authors.forename: M I
authors.initials: MI
authors.lastname: Dobrikov
authors.forename: M N
authors.initials: MN
authors.lastname: Repkova
authors.forename: G V
authors.initials: GV
authors.lastname: Shishkin
authors.forename: A G
authors.initials: AG
authors.lastname: Ven'yaminova
authors.forename: G G
authors.initials: GG
authors.lastname: Karpova
mesh_terms: D001483:Base Sequence; D017124:Conserved Sequence; D004926:Escherichia coli / Q000235:genetics; D005260:Female; D006801:Humans; D008958:Models, Molecular; D008969:Molecular Sequence Data; D009690:Nucleic Acid Conformation; D010920:Placenta / Q000737:chemistry; D011247:Pregnancy; D012329:RNA, Bacterial / Q000737:chemistry; D012336:RNA, Ribosomal, 16S / Q000737:chemistry; D012337:RNA, Ribosomal, 18S / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification; D016914:Ribonuclease H; D012269:Ribosomal Proteins / Q000737:chemistry* / Q000302:isolation & purification; D012270:Ribosomes / Q000737:chemistry / Q000235:genetics*
chemical_list: D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S; D012337:RNA, Ribosomal, 18S; D012269:Ribosomal Proteins; D016914:Ribonuclease H