5mn3 | pdb_00005mn3

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

spinqualitylabelsall models 5mn3 Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5mn3 is a 1 chain structure with sequence from Littorina littorea. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Solution NMR Ligands: CD Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed In this study, we present an NMR structure of the metallothionein (MT) from the snail Littorina littorea (LlMT) in complex with Cd2+ . LlMT is capable of binding 9 Zn2+ or 9 Cd2+ ions. Sequence alignments with other snail MTs revealed that the protein is likely composed of three domains. The study revealed that the protein is divided into three individual domains, each of which folds into a single well-defined three-metal cluster. The central alpha2 and C-terminal beta domains are positioned with a unique relative orientation. Two variants with longer and shorter linkers were investigated, which revealed that specific interdomain contacts only occurred with the wild-type linker. Moreover, a domain-swap mutant in which the highly similar alpha1 and alpha2 domains were exchanged was structurally almost identical. It is suggested that the expression of a three-domain MT confers an evolutionary advantage on Littorina littorea in terms of coping with Cd2+ stress and adverse environmental conditions. Structural Adaptation of a Protein to Increased Metal Stress: NMR Structure of a Marine Snail Metallothionein with an Additional Domain.,Baumann C, Beil A, Jurt S, Niederwanger M, Palacios O, Capdevila M, Atrian S, Dallinger R, Zerbe O Angew Chem Int Ed Engl. 2017 Apr 10;56(16):4617-4622. doi:, 10.1002/anie.201611873. Epub 2017 Mar 23. PMID:28332759 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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