Comparative Analyses of Hairpin Substrate Recognition byEscherichia coliandBacillus subtilisRibonuclease P Ribozymes
Author(s) -
Tomoaki Ando,
Terumichi Tanaka,
Yo Kikuchi
Publication year - 2003
Publication title -
bioscience biotechnology and biochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.509
H-Index - 116
eISSN - 1347-6947
pISSN - 0916-8451
DOI - 10.1271/bbb.67.1825
Subject(s) - ribozyme , bacillus subtilis , rnase p , escherichia coli , ribonuclease , substrate (aquarium) , rna , rnase h , biochemistry , chemistry , vs ribozyme , hairpin ribozyme , magnesium , ribonuclease iii , biology , bacteria , organic chemistry , genetics , ecology , gene , rna interference
Previously, we reported that the substrate shape recognition of the Escherichia coli ribonuclease (RNase) P ribozyme depends on the concentration of magnesium ion in vitro. We additionally examined the Bacillus subtilis RNase P ribozyme and found that the B. subtilis enzyme also required high magnesium ion, above 10 mM, for cleavage of a hairpin substrate. The results of kinetic studies showed that the metal ion concentration affected both the catalysis and the affinity of the ribozymes toward a hairpin RNA substrate.
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