[Ribosomal protein binding with the first intron of the human ribosomal protein S26 pre-mRNA stimulates its interaction with proteins extracted from Hela cells].
As shown by nitrocellulose filtration assays with RNA fragments transcribed from various regions of the human ribosomal protein (rp) S26 gene, proteins of the 40S ribosome subunit bind to the first intron of the rpS26 pre-mRNA. The binding involved mostly S23, S26 and, to a lesser extent, S13/16. Negligible binding was observed for S2/3a, S6, S8, S10, S11, and S20. Small-subunit proteins did not affect the efficiency of in vitro splicing of a pre-mRNA fragment corresponding to the first intron, second exon, second intron, and a part of the third exon of the rpS26 gene. However, ribosomal proteins substantially increased UV-induced adduction of the pre-mRNA fragments with nuclear extract proteins of HeLa cells. The same set of HeLa proteins was observed with each pre-mRNA fragment. Ribosomal proteins formed adducts only in the absence of HeLa proteins.
Ivanov
A V
AV
Novosibirsk Institute of Bioorganic Chemistry, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090 Russia.
Malygin
A A
AA
Karpova
G G
GG
D002457:Cell Extracts; D004247:DNA / Q000737:chemistry; D006367:HeLa Cells / Q000528:radiation effects; D006801:Humans; D007438:Introns; D010761:Phosphorus Radioisotopes / Q000737:chemistry; D012322:RNA Precursors / Q000378:metabolism; D012326:RNA Splicing; D012333:RNA, Messenger / Q000378:metabolism*; D012269:Ribosomal Proteins / Q000235:genetics* / Q000378:metabolism*; D014158:Transcription, Genetic; D014466:Ultraviolet Rays
D002457:Cell Extracts; D010761:Phosphorus Radioisotopes; D012322:RNA Precursors; D012333:RNA, Messenger; C489203:RPS26 protein, human; D012269:Ribosomal Proteins; D004247:DNA
Ribosomnye belki, sviazyvaiushchiesia s pervym intronom pre-mRNK ribosomnogo belka S26 cheloveka, stimuliruiut vzaimodeĭstvie belkov ékstrakta kletok Hela s étim intronom.