Spectroscopic characterization of metallothionein from the terrestrial snail, Helix pomatia
Dallinger,R.; Wang,Y.; Berger,B.; Mackay,E.A.; Kagi,J.H.;
The Cd-sequestering metallothionein (MT) isoform isolated from the midgut gland of Roman snails exposed to Cd supplements in the feed was characterized by compositional and spectroscopic analysis. The preparations contained nearly 5 mol of Cd, small amounts of Cu and about 1 mol of Zn per chain mass of 6620 Da, in numerical agreement with the apoprotein’s measured capacity of firmly binding a maximum of 6 equivalents of Cd per molecule.
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