5MN3

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


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

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.

(2017) Angew Chem Int Ed Engl 56: 4617-4622

  • DOI: 10.1002/anie.201611873
  • Primary Citation of Related Structures:  
    5ML1, 5MN3

  • PubMed Abstract: 
  • In this study, we present an NMR structure of the metallothionein (MT) from the snail Littorina littorea (LlMT) in complex with Cd 2+ . LlMT is capable of binding 9 Zn 2+ or 9 Cd 2+ ions. Sequence alignments with other snail MTs revealed that the protein is likely composed of three domains ...

    In this study, we present an NMR structure of the metallothionein (MT) from the snail Littorina littorea (LlMT) in complex with Cd 2+ . LlMT is capable of binding 9 Zn 2+ or 9 Cd 2+ 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 α2 and C-terminal β 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 α1 and α2 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 Cd 2+ stress and adverse environmental conditions.


    Organizational Affiliation

    Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
domain-swapped metallothionein from Littorina Littorea A102Littorina littoreaMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 5MN3 Olderado

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Swiss National Science FoundationSwitzerlandI 1482-N28

Revision History  (Full details and data files)

  • Version 1.0: 2017-12-20
    Type: Initial release
  • Version 1.1: 2019-05-08
    Changes: Data collection
  • Version 1.2: 2019-07-03
    Changes: Data collection, Database references