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comparative sequence-structure analysis and molecular dynamics simulations to reveal the molecula features of cold adaptation of enzyme. Enzyme has fewer arginines, a lower Arg/(Lys+Arg) ratio, a lower fraction of large aliphatic residues, more methionines, more serines, and more of the thermolabile amino acid asparagine than other thermolysin enzymes. Additionally, the enzyme has fewer intramolecular cation-pi electron interactions and fewer hydrogen bonds than its pseudolysin or thermolysin counterparts |
Antarctic bacterium str. 643 |