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Protein

Metallothionein

Gene

MT-A

Organism
Ambystoma mexicanum (Axolotl)
Status
Reviewed-Annotation score: Annotation score: 2 out of 5-Protein inferred from homologyi

Functioni

Metallothioneins have a high content of cysteine residues that bind various heavy metals.By similarity

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi3 – 31Divalent metal cation; cluster B
Metal bindingi5 – 51Divalent metal cation; cluster B
Metal bindingi11 – 111Divalent metal cation; cluster B
Metal bindingi13 – 131Divalent metal cation; cluster B
Metal bindingi17 – 171Divalent metal cation; cluster B
Metal bindingi19 – 191Divalent metal cation; cluster B
Metal bindingi22 – 221Divalent metal cation; cluster B
Metal bindingi24 – 241Divalent metal cation; cluster B
Metal bindingi27 – 271Divalent metal cation; cluster B
Metal bindingi31 – 311Divalent metal cation; cluster A
Metal bindingi32 – 321Divalent metal cation; cluster A
Metal bindingi34 – 341Divalent metal cation; cluster A
Metal bindingi35 – 351Divalent metal cation; cluster A
Metal bindingi39 – 391Divalent metal cation; cluster A
Metal bindingi42 – 421Divalent metal cation; cluster A
Metal bindingi46 – 461Divalent metal cation; cluster A
Metal bindingi48 – 481Divalent metal cation; cluster A
Metal bindingi56 – 561Divalent metal cation; cluster A
Metal bindingi58 – 581Divalent metal cation; cluster A
Metal bindingi59 – 591Divalent metal cation; cluster A

GO - Molecular functioni

  1. metal ion binding Source: UniProtKB-KW
Complete GO annotation...

Keywords - Ligandi

Metal-binding, Metal-thiolate cluster

Names & Taxonomyi

Protein namesi
Recommended name:
Metallothionein
Alternative name(s):
AnMT
Short name:
MT
Gene namesi
Name:MT-A
OrganismiAmbystoma mexicanum (Axolotl)
Taxonomic identifieri8296 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiAmphibiaBatrachiaCaudataSalamandroideaAmbystomatidaeAmbystoma

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 6060MetallothioneinPRO_0000197320Add
BLAST

Structurei

3D structure databases

ProteinModelPortaliO42152.
SMRiO42152. Positions 29-60.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni1 – 2828BetaAdd
BLAST
Regioni29 – 6032AlphaAdd
BLAST

Domaini

Class I metallothioneins contain 2 metal-binding domains: four divalent ions are chelated within cluster A of the alpha domain and are coordinated via cysteinyl thiolate bridges to 11 cysteine ligands. Cluster B, the corresponding region within the beta domain, can ligate three divalent ions to 9 cysteines.

Sequence similaritiesi

Family and domain databases

Gene3Di4.10.10.10. 1 hit.
InterProiIPR017854. Metalthion_dom.
IPR023587. Metalthion_dom_vert.
IPR003019. Metalthion_sfam_euk.
IPR000006. Metalthion_vert.
IPR018064. Metalthion_vert_metal_BS.
[Graphical view]
PANTHERiPTHR23299. PTHR23299. 1 hit.
PfamiPF00131. Metallothio. 1 hit.
[Graphical view]
PRINTSiPR00860. MTVERTEBRATE.
SUPFAMiSSF57868. SSF57868. 1 hit.
PROSITEiPS00203. METALLOTHIONEIN_VRT. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

O42152-1 [UniParc]FASTAAdd to Basket

« Hide

        10         20         30         40         50
MDCACATGGS CSCAGSCKCE NCKCTSCKKS CCSCCPSECE KCGQGCVCKG
60
GSSEKCSCCN
Length:60
Mass (Da):5,979
Last modified:January 1, 1998 - v1
Checksum:iAB05F49153953279
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF008583 mRNA. Translation: AAB71835.1.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF008583 mRNA. Translation: AAB71835.1.

3D structure databases

ProteinModelPortaliO42152.
SMRiO42152. Positions 29-60.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Family and domain databases

Gene3Di4.10.10.10. 1 hit.
InterProiIPR017854. Metalthion_dom.
IPR023587. Metalthion_dom_vert.
IPR003019. Metalthion_sfam_euk.
IPR000006. Metalthion_vert.
IPR018064. Metalthion_vert_metal_BS.
[Graphical view]
PANTHERiPTHR23299. PTHR23299. 1 hit.
PfamiPF00131. Metallothio. 1 hit.
[Graphical view]
PRINTSiPR00860. MTVERTEBRATE.
SUPFAMiSSF57868. SSF57868. 1 hit.
PROSITEiPS00203. METALLOTHIONEIN_VRT. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. "Cloning of a complementary DNA encoding an Ambystoma mexicanum metallothionein, AmMT, and expression of the gene during early development."
    Saint-Jacques E., Guay J., Wirtanen L., Huard V., Stewart G., Seguin C.
    DNA Cell Biol. 17:83-91(1998) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [MRNA].
    Tissue: Embryo.

Entry informationi

Entry nameiMT_AMBME
AccessioniPrimary (citable) accession number: O42152
Entry historyi
Integrated into UniProtKB/Swiss-Prot: December 1, 2000
Last sequence update: January 1, 1998
Last modified: October 1, 2014
This is version 64 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Documents

  1. Metallothioneins
    Classification of metallothioneins and list of entries
  2. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.