title: Crosslinking of transcription factor TFIIIA to ribosomal 5S RNA from X. laevis by trans-diamminedichloroplatinum (II).
abstract: Trans-diamminnedichloroplatinum (II) was used to induce reversible crosslinks between 5S rRNA and TFIIIA within the 7S RNP particle from X. laevis immature oocyte. The crosslinked fragments have been unambiguously identified. These fragments exclusively arise from three RNA regions centered around the hinge region at the junction of the three helical domains. Major crosslinking sites are located in region 9-21 (comprising loops A and helix II) and region 54-71 (comprising loop B, helices II and V). A minor site is also found in the 3' part of helix I and helix V (region 100-120). Our results point to the crucial role of the junction region and of the three-dimensional folding of the RNA in the recognition of the 5S rRNA by TFIIIA.
authors.affiliation: Laboratoire de Biologie Moléculaire et Cellulaire du CNRS, Strasbourg, France.
authors.forename: F
authors.initials: F
authors.lastname: Baudin
authors.forename: P
authors.initials: P
authors.lastname: Romby
authors.forename: P J
authors.initials: PJ
authors.lastname: Romaniuk
authors.forename: B
authors.initials: B
authors.lastname: Ehresmann
authors.forename: C
authors.initials: C
authors.lastname: Ehresmann
mesh_terms: D000818:Animals; D001482:Base Composition; D001483:Base Sequence; D002945:Cisplatin / Q000494:pharmacology*; D003432:Cross-Linking Reagents / Q000494:pharmacology*; D004587:Electrophoresis, Agar Gel; D005260:Female; D007536:Isomerism; D008961:Models, Structural; D008969:Molecular Sequence Data; D008970:Molecular Weight; D009690:Nucleic Acid Conformation; D009710:Nucleotide Mapping; D009865:Oocytes / Q000378:metabolism; D011485:Protein Binding; D012335:RNA, Ribosomal / Q000378:metabolism*; D012341:RNA, Ribosomal, 5S / Q000378:metabolism*; D012261:Ribonucleoproteins / Q000302:isolation & purification / Q000378:metabolism; D035582:Transcription Factor TFIIIA; D014157:Transcription Factors / Q000378:metabolism*; D014982:Xenopus laevis
chemical_list: D003432:Cross-Linking Reagents; D012335:RNA, Ribosomal; D012341:RNA, Ribosomal, 5S; D012261:Ribonucleoproteins; D035582:Transcription Factor TFIIIA; D014157:Transcription Factors; C034697:transplatin; D002945:Cisplatin