The tertiary structure of Aspergillus saitoi minor ribonuclease (Ms) predicted from the structure of RNase T1.

Ribonuclease Ms from Aspergillus saitoi is a small acidic protein (11,714 Da) containing 106 amino acids of known sequence. Unlike other enzymes belonging to the RNase T1 family this ribonuclease is base-unspecific. Using interactive computer graphics and energy minimisation we predicted the structure of RNase Ms on the basis of sequence homology to RNase T1 of known structure. In this report the predicted structure of this protein is presented and characterised.