LEVELS OF TRANSFER-RNAS IN BACTERIAL-CELLS AS AFFECTED BY AMINO-ACID USAGE IN PROTEINS

被引:52
作者
YAMAO, F [1 ]
ANDACHI, Y [1 ]
MUTO, A [1 ]
IKEMURA, T [1 ]
OSAWA, S [1 ]
机构
[1] NAGOYA UNIV, FAC SCI, DEPT BIOL, MOLEC GENET LAB, NAGOYA 46401, JAPAN
关键词
D O I
10.1093/nar/19.22.6119
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Transfer RNAs of Mycoplasma capricolum were separated by two-dimensional polyacrylamide gel electrophoresis, and the relative abundance of each of the 28 known tRNA species was measured. There existed a correlation between the relative amount of isoacceptor tRNAs and the frequency in choosing synonymous codons that could be translated by the isoacceptors. Furthermore, it was observed that the total amount of tRNAs for a particular amino acid was paralleled by the composition of the amino acid in ribosomal proteins. A similar relationship was obtained from reexamination of the previous data on Escherichia coli tRNAs, suggesting that the amount of tRNAs for an amino acid is affected by the usage of the amino acid in proteins.
引用
收藏
页码:6119 / 6122
页数:4
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