Ribonuclease Z, E. coli 3' tRNA-processing endonuclease ZiPD and related proteins; MBL-fold metallo-hydrolase domain
The tRNA maturase RNase Z (also known as tRNase Z or 3' tRNase) catalyzes the endonucleolytic removal of the 3' extension of the majority of tRNA precursors. Escherichia coli zinc phosphodiesterase (ZiPD, also known as ecoZ, tRNase Z, or RNase BN) is a 3' tRNA-processing endonuclease, encoded by the elaC gene. Two forms of RNase Z exist in eukaryotes, one long (ELAC2) and one short form (ELAC1), the former may have resulted from a duplication of the shorter enzyme; this subgroup includes the short form (ELAC1). Only the short form exists in bacteria. Members of this subgroup belong to the MBL-fold metallo-hydrolase superfamily which is comprised mainly of hydrolytic enzymes which carry out a variety of biological functions.
Comment:based on Bacillus subtilis RNaseZ and on other members of the MBL-fold metallo-hydrolase superfamily with structure and including two metal binding sites
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