Primary Structure of a Base Non-Specific Ribonuclease from Rhizopus niveus
- 1 March 1988
- journal article
- research article
- Published by Oxford University Press (OUP) in The Journal of Biochemistry
- Vol. 103 (3) , 408-418
- https://doi.org/10.1093/oxfordjournals.jbchem.a122284
Abstract
The primary structure of a base non-specific ribonuclease from Rhizopus niveus (RNase Rh) was determined by nucleotide sequence analysis of the DNA fragment encoding RNase Rh gene including signal peptide sequence, and amino acid sequence analysis of the peptide obtained from RNase Rh and RNase Rh' (a protease-modified RNase Rh created during the course of purification). The sequence determined was: MKAVLALATLIGSTLASSCSSTALSCSNSANSDTCCSPEYGLVVLNMQWAPGYGPANAFTLHGLWPDKCSGAYAPSGGCDSN RASSSIASVIKSKDSSLYNSMLTYWPSNQGNNNVFTWSHEWSKHGTCVSTYDPDCYDNYEEGEDIVDYFQKAMDLRSQYNVYKAFSSNGITPGGTYTATEMQSAIESYFGAKAKIDCSSGTLSDVALYFYVRGRDTYVITDALSTGSCSGDVEYPTK (the sequence of signal peptide is underlined). The sequence indicates that the homology with the sequence of RNase T2 from A. oryzae with the same base specificity is about 42% and that the sequences around the two histidine residues which are supposed to be involved in the active site are fairly conserved.Keywords
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