1M0G | pdb_00001m0g

Solution structure of the alpha domain of mt_nc

• PDB DOI: https://doi.org/10.2210/pdb1M0G/pdb

• Classification: METAL BINDING PROTEIN
• Organism(s): Notothenia coriiceps
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2002-06-13 Released: 2003-05-06 
• Deposition Author(s): Capasso, C., Carginale, V., Crescenzi, O., Di Maro, D., Parisi, E., Spadaccini, R., Temussi, P.A.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 20 
• Conformers Submitted: 20 
• Selection Criteria: all calculated structures submitted 

Literature

Solution Structure of MT_nc, a Novel Metallothionein from the Antarctic Fish Notothenia coriiceps.

Capasso, C., Carginale, V., Crescenzi, O., Di Maro, D., Parisi, E., Spadaccini, R., Temussi, P.A.

(2003) Structure 11: 435-443

• PubMed: 12679021 
• DOI: https://doi.org/10.1016/s0969-2126(03)00044-3
• Primary Citation Related Structures: 
  1M0G, 1M0J


• PubMed Abstract: 
  

  The structure of [113Cd(7)]-metallothionein (MT_nc) of the Antarctic fish Notothenia coriiceps, the first three-dimensional structure of a fish metallothionein, was determined by homonuclear 1H NMR experiments and heteronuclear [1H, 113Cd]-correlation spectroscopy. MT_nc is composed of an N-terminal beta domain with 9 cysteines and 3 metal ions and a carboxy-terminal alpha-domain with 11 cysteines and 4 metal ions. The position of the ninth Cys of the alpha domain of MT_nc is different from the corresponding Cys of mammalian MTs. As a result, the last CXCC motif in the mammalian MT sequence becomes CXXXCC in the fish MT. This difference leads to a structural change of the alpha domain and, in turn, to a different charge distribution with respect to that observed in mammalian metallothioneins.

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Organizational Affiliation: 
• CNR, Institute of Protein Biochemistry, via Marconi 10, I 80125, Naples, Italy.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 3.42 kDa 
• Atom Count: 197 
• Modeled Residue Count: 30 
• Deposited Residue Count: 30 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
metallothionein MT_nc	A	30	Notothenia coriiceps	Mutation(s): 0
UniProt
Find proteins for P62680 (Notothenia neglecta) Explore P62680  Go to UniProtKB:  P62680

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CD	B [auth A], C [auth A], D [auth A], E [auth A]	CADMIUM ION Cd WLZRMCYVCSSEQC-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 20 
• Conformers Submitted: 20 
• Selection Criteria: all calculated structures submitted 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-05-06 
Deposition Author(s): Capasso, C., Carginale, V., Crescenzi, O., Di Maro, D., Parisi, E., Spadaccini, R., Temussi, P.A.

Revision History  

• Version 1.0: 2003-05-06
  Type: Initial release
  
• Version 1.1: 2008-04-28
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2022-02-23
  Changes: Data collection, Database references, Derived calculations
• Version 1.4: 2024-05-29
  Changes: Data collection