Biological Assembly 1  

 3D View: Structure | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 3.02 kDa 
• Atom Count: 178 
• Residue Count: 28 
• Unique protein chains: 1

1QJL

METALLOTHIONEIN MTA FROM SEA URCHIN (BETA DOMAIN)

• DOI: 10.2210/pdb1QJL/pdb

• Classification: METALLOTHIONEIN
• Organism(s): Strongylocentrotus purpuratus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 1999-06-24 Released: 1999-08-31 
• Deposition Author(s): Riek, R., Precheur, B., Wang, Y., Mackay, E.A., Wider, G., Guntert, P., Liu, A., Kaegi, J.H.R., Wuthrich, K.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 20 
• Conformers Submitted: 1 
• Selection Criteria: LEAST RESTRAINT VIOLATION 

Literature

NMR structure of the sea urchin (Strongylocentrotus purpuratus) metallothionein MTA.

Riek, R., Precheur, B., Wang, Y., Mackay, E.A., Wider, G., Guntert, P., Liu, A., Kagi, J.H., Wuthrich, K.

(1999) J Mol Biol 291: 417-428

• PubMed: 10438629 
• DOI: 10.1006/jmbi.1999.2967
• Primary Citation of Related Structures:  
  1QJL, 1QJK


• PubMed Abstract: 
  

The three-dimensional structure of [(113)Cd7]-metallothionein-A (MTA) of the sea urchin Strongylocentrotus purpuratus was determined by homonuclear(1)H NMR experiments and heteronuclear [(1)H, (113)Cd]-correlation spectroscopy. MTA is composed of two globular domains, an N-terminal four-metal domain of the amino acid residues 1 to 36 and a Cd4Cys11cluster, and a C-terminal three-metal domain including the amino acid residues 37 to 65 and a Cd3Cys9cluster. The structure resembles the known mammalian and crustacean metallothioneins, but has a significantly different connectivity pattern of the Cys-metal co-ordination bonds and concomitantly contains novel local folds of some polypeptide backbone segments. These differences can be related to variations of the Cys sequence positions and thus emphasize the special role of the cysteine residues in defining the structure of metallothioneins, both on the level of the domain architecture and the topology of the metal-thiolate clusters.

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Related Citations: 

• Three-Dimensional Structure of Human [113Cd7]-Metallothionein-2 in Solution Determined by Nuclear Magnetic Resonance Spectroscopy
  Messerle, B.A., Schaffer, A., Vasak, M., Kaegi, J.H.R., Wuthrich, K.
  (1990) J Mol Biol 214: 765

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Organizational Affiliation: 

Institut für Molekularbiolgie und Biophysik, Eidgenössische Technische Hochschule-Hönggerberg, Zürich, CH-8093, Switzerland.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
METALLOTHIONEIN	A	28	Strongylocentrotus purpuratus	Mutation(s): 0  Gene Names: MTA
Find proteins for P04734 (Strongylocentrotus purpuratus) Explore P04734  Go to UniProtKB:  P04734

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CD	A	CADMIUM ION Cd WLZRMCYVCSSEQC-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 20 
• Conformers Submitted: 1 
• Selection Criteria: LEAST RESTRAINT VIOLATION 
• OLDERADO: 1QJL Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1999-06-24 
• Released Date: 1999-08-31 
Deposition Author(s): Riek, R., Precheur, B., Wang, Y., Mackay, E.A., Wider, G., Guntert, P., Liu, A., Kaegi, J.H.R., Wuthrich, K.

Revision History 

• Version 1.0: 1999-08-31
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2019-01-16
  Changes: Data collection, Database references