Thiede B, Urlaub H, Neubauer H, Grelle G, Wittmann-Liebold B
Max-Delbrück-Centrum für Molekulare Medizin, Robert-Rössle-Strasse 10, D-13125 Berlin, Germany.
Biochem J. 1998 Aug 15;334 ( Pt 1)(Pt 1):39-42. doi: 10.1042/bj3340039.
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.
分离并纯化RNA-蛋白质交联复合物,以获取有关大肠杆菌50S核糖体亚基中RNA-蛋白质接触位点的精确数据。使用N端微量测序和基质辅助激光解吸电离质谱在氨基酸和核苷酸水平鉴定交联位点。通过这种方式,确定了五种核糖体蛋白与23S rRNA的以下接触位点:L2的Lys-67与U-1963、L4的Tyr-35与U-615、L21的Lys-97与U-546、L23的Lys-49与U-139或C-140以及L27的Lys-71和Lys-74与U-2334。