Two structural types of mercury reductases and possible ways of their evolution
- 24 April 1989
- journal article
- research article
- Published by Wiley in FEBS Letters
- Vol. 247 (2) , 333-336
- https://doi.org/10.1016/0014-5793(89)81364-x
Abstract
Structural differences have been revealed among mercury reductases of immunologically unrelated types from Gram‐positive bacteria: enzymes of one immunological type have a molecular mass of 62–69 kDa and seem to contain an N‐terminal extension of 5–15 kDa, which is easily cleaved by trypsin and chymotrypsin; enzymes of the other immunological type have a molecular mass of 52–57 kDa and are resistant to proteolysis. The existence of at least two different lines in the evolution of mercury reductases is surmised.Keywords
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