Precise determination of RNA-protein contact sites in the 50 S ribosomal subunit of Escherichia coli.
RNA-protein cross-linked complexes were isolated and purified to obtain precise data about RNA-protein contact sites in the 50 S ribosomal subunit of Escherichia coli. N-terminal microsequencing and matrix-assisted laser desorption ionization MS were used to identify the cross-linking sites at the amino acid and nucleotide levels. In this manner the following contact sites of five ribosomal proteins with the 23 S rRNA were established: Lys-67 of L2 to U-1963, Tyr-35 of L4 to U-615, Lys-97 of L21 to U-546, Lys-49 of L23 to U-139 or C-140 and Lys-71 and Lys-74 of L27 to U-2334.
Max-Delbrück-Centrum für Molekulare Medizin, Robert-Rössle-Strasse 10, D-13125 Berlin, Germany.
B
B
Thiede
H
H
Urlaub
H
H
Neubauer
G
G
Grelle
B
B
Wittmann-Liebold
D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000737:chemistry; D001483:Base Sequence; D001665:Binding Sites; D002851:Chromatography, High Pressure Liquid; D003432:Cross-Linking Reagents; D008958:Models, Molecular; D008969:Molecular Sequence Data; D009690:Nucleic Acid Conformation; D009843:Oligoribonucleotides / Q000737:chemistry; D010446:Peptide Fragments / Q000737:chemistry; D012329:RNA, Bacterial / Q000737:chemistry; D012338:RNA, Ribosomal, 23S / Q000737:chemistry*; D012269:Ribosomal Proteins / Q000737:chemistry*; D012270:Ribosomes / Q000737:chemistry* / Q000648:ultrastructure; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
D001426:Bacterial Proteins; D003432:Cross-Linking Reagents; D009843:Oligoribonucleotides; D010446:Peptide Fragments; D012329:RNA, Bacterial; D012338:RNA, Ribosomal, 23S; D012269:Ribosomal Proteins; C029466:ribosomal protein L2