NMR structure of the Littorina littorea metallothionein, a snail MT folding into three distinct domains

domain-swapped metallothionein from Littorina Littorea

Angewandte Chemie (International ed. in English)
Structural Adaptation of a Protein to Increased Metal Stress: NMR Structure of a Marine Snail Metallothionein with an Additional Domain.

residues wt(8-38) are exchanged with ds(40-70) and wt(41-70) with ds(8-37)