Accessibility of ribosomal proteins to trypsin in Thermus thermophilus ribosomes

Authors

  • M. M. Yusupov Institute of Protein Research, Academy of Sciences of the USSR Pushchino, Moscow Region, USSR Author
  • T. N. Spirina Institute of Molecular Genetics, Academy of Sciences of the USSR Moscow, USSR Author

DOI:

https://doi.org/10.7124/bc.00027F

Abstract

Proteins accessible to trypsin in ribosome and in ribosomal subunits from extreme thermophilic Thermus thermophilus have been analyzed. In 70S ribosomes 7 proteins of the small (SOS) subunit, TS2, TS3, TS7, TS12, TS17, TS19, TS20 and 5 proteins of the large (SOS) subunit, TL5, TL8, TL9, TL23, TL24 were accessible to trypsin. Dissociation of 70S ribosomes into subunits leads to no appearance of proteins accessible to trypsin. This confirms previous conclusion on the absence of ribosomal proteins between the subunits (Yusupov M. and Spirin A., FEES Lett., 1986, 197, 229—233).

References

Gudkov AT, Gongadze GM. The L7/L12 proteins change their conformation upon interaction of EF-G with ribosomes. FEBS Lett. 1984;176(1):32-6.

Crichton RR, Wittmann HG. Ribosomal proteins. XXIV. Trypsin digestion as a possible probe of the conformation of Escherichia coli ribosomes. Mol Gen Genet. 1972;114(2):95-105.

Iusupov MM, Spirin AS. Study of the surface of Escherichia coli ribosomes and ribosomal particles by the tritium bombardment method. Biokhimiia. 1986;51(11):1858-67.

Gogiya ZV, Yusupov MM, Spirina TN. Structure of Thermus thermophilus ribosomes. Method of isolation and purification of the ribosomes. Mol Biol (Mosk). 1986; 20(2):519-26.

Hardy SJ, Kurland CG, Voynow P, Mora G. The ribosomal proteins of Escherichia coli. I. Purification of the 30S ribosomal proteins. Biochemistry. 1969;8(7):2897-905.

Kenny JW, Lambert JM, Traut RR. Cross-linking of ribosomes using 2-iminothiolane (methyl 4-mercaptobutyrimidate) and identification of cross-linked proteins by diagonal polyacrylamide/sodium dodecyl sulfate gel electrophoresis. Methods Enzymol. 1979;59:534-50.

Trakhanov SD, Yusupov MM, Agalarov SC, Garber MB, Ryazantsev SN, Tischenko SV, et al. Crystallization of 70 S ribosomes and 30 S ribosomal subunits from Thermus thermophilus. FEBS Lett. 1987;220(2):319–22.

Yusupov MM, Spirin AS. Are there proteins between the ribosomal subunits? Hot tritium bombardment experiments. FEBS Lett. 1986;197(1-2):229-33.

Published

1990-07-20

Issue

Section

Structure and Function of Biopolymers