ISDA

Deposition Date 2002-06-13

Release Date 2003-05-06

Last Version Date 2024-05-29

Entry Detail

PDB ID:

1M0G

Keywords:

METAL BINDING PROTEIN

Title:

Solution structure of the alpha domain of mt_nc

Biological Source:

Source Organism:

Notothenia coriiceps (Taxon ID: 8208)

Host Organism:

Escherichia coli BL21(DE3)

Method Details:

Experimental Method:

SOLUTION NMR

Conformers Calculated:

Conformers Submitted:

Selection Criteria:

all calculated structures submitted

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:metallothionein MT_nc
Gene (Uniprot):mta
Chain IDs:A
Chain Length:30
Number of Molecules:1
Biological Source:Notothenia coriiceps

UniProt ID:P62339 Pfam ID:PF00131

Ligand Molecules

Primary Citation

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.Show

Structure 11 435 443 (2003)

PMID: 12679021 DOI: 10.1016/S0969-2126(03)00044-3

Abstact

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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Primary Citation of related structures