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F6X2V8

- MTAP_CIOIN

UniProt

F6X2V8 - MTAP_CIOIN

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Protein
S-methyl-5'-thioadenosine phosphorylase
Gene
N/A
Organism
Ciona intestinalis (Transparent sea squirt) (Ascidia intestinalis)
Status
Reviewed - Annotation score: 3 out of 5 - Protein inferred from homologyi

Functioni

Catalyzes the reversible phosphorylation of S-methyl-5'-thioadenosine (MTA) to adenine and 5-methylthioribose-1-phosphate. Involved in the breakdown of MTA, a major by-product of polyamine biosynthesis. Responsible for the first step in the methionine salvage pathway after MTA has been generated from S-adenosylmethionine. Has broad substrate specificity with 6-aminopurine nucleosides as preferred substrates By similarity.UniRule annotation

Catalytic activityi

S-methyl-5'-thioadenosine + phosphate = adenine + S-methyl-5-thio-alpha-D-ribose 1-phosphate.UniRule annotation

Pathwayi

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Binding sitei18 – 181Phosphate By similarity
Sitei178 – 1781Important for substrate specificity By similarity
Binding sitei196 – 1961Substrate; via amide nitrogen By similarity
Binding sitei197 – 1971Phosphate By similarity
Sitei233 – 2331Important for substrate specificity By similarity

GO - Molecular functioni

  1. S-methyl-5-thioadenosine phosphorylase activity Source: UniProtKB-HAMAP
  2. phosphorylase activity Source: InterPro

GO - Biological processi

  1. L-methionine salvage from methylthioadenosine Source: UniProtKB-HAMAP
  2. purine ribonucleoside salvage Source: UniProtKB-KW
Complete GO annotation...

Keywords - Molecular functioni

Glycosyltransferase, Transferase

Keywords - Biological processi

Purine salvage

Enzyme and pathway databases

UniPathwayiUPA00904; UER00873.

Names & Taxonomyi

Protein namesi
Recommended name:
S-methyl-5'-thioadenosine phosphorylase (EC:2.4.2.28)
Alternative name(s):
5'-methylthioadenosine phosphorylase
Short name:
MTA phosphorylase
Short name:
MTAP
Short name:
MTAPase
OrganismiCiona intestinalis (Transparent sea squirt) (Ascidia intestinalis)
Taxonomic identifieri7719 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataTunicataAscidiaceaEnterogonaPhlebobranchiaCionidaeCiona
ProteomesiUP000008144: Unplaced

Subcellular locationi

Cytoplasm By similarity. Nucleus By similarity UniRule annotation

GO - Cellular componenti

  1. cytoplasm Source: UniProtKB-SubCell
  2. nucleus Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm, Nucleus

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 280280S-methyl-5'-thioadenosine phosphorylaseUniRule annotation
PRO_0000415116Add
BLAST

Interactioni

Subunit structurei

Homotrimer By similarity.UniRule annotation

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni60 – 612Phosphate binding By similarity
Regioni93 – 942Phosphate binding By similarity
Regioni220 – 2223Substrate binding By similarity

Sequence similaritiesi

Phylogenomic databases

KOiK00772.

Family and domain databases

Gene3Di3.40.50.1580. 1 hit.
HAMAPiMF_01963. MTAP.
InterProiIPR010044. MTAP.
IPR000845. Nucleoside_phosphorylase_d.
IPR001369. PNP/MTAP.
IPR018099. Purine_phosphorylase-2_CS.
[Graphical view]
PANTHERiPTHR11904. PTHR11904. 1 hit.
PfamiPF01048. PNP_UDP_1. 1 hit.
[Graphical view]
SUPFAMiSSF53167. SSF53167. 1 hit.
TIGRFAMsiTIGR01694. MTAP. 1 hit.
PROSITEiPS01240. PNP_MTAP_2. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

F6X2V8-1 [UniParc]FASTAAdd to Basket

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MMESGDRQNN KIGIIGGSGL ESIELFTVKD KVNCNTPYGK PSSSLINGTL    50
NGIECVLLSR HGDSHDIMPT DVNYRANLYA LKEAGCSIIL ATTACGSLQE 100
ELKPTDFVVI DQFIDRTTKR HSTFYDGQNV QMKGVCHIPM RNPFCEKLQN 150
VLLSACNVNN VSCHSKGTMV TIEGPRFSTY AESNLFRKWG GSLINMTTVP 200
EVVLANELGM LYAALAMVTD YDCWKEDHAS VNVENVMKTM KVNRGNALKV 250
LVSAVEIISK QNLQPDIQLA EKNAKNSVML 280
Length:280
Mass (Da):30,829
Last modified:July 27, 2011 - v1
Checksum:iFDA5FC0E8A8A4B58
GO

Sequence databases

RefSeqiXP_002131665.1. XM_002131629.2.

Genome annotation databases

GeneIDi100177521.
KEGGicin:100177521.

Cross-referencesi

Sequence databases

RefSeqi XP_002131665.1. XM_002131629.2.

3D structure databases

ModBasei Search...
MobiDBi Search...

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

GeneIDi 100177521.
KEGGi cin:100177521.

Phylogenomic databases

KOi K00772.

Enzyme and pathway databases

UniPathwayi UPA00904 ; UER00873 .

Family and domain databases

Gene3Di 3.40.50.1580. 1 hit.
HAMAPi MF_01963. MTAP.
InterProi IPR010044. MTAP.
IPR000845. Nucleoside_phosphorylase_d.
IPR001369. PNP/MTAP.
IPR018099. Purine_phosphorylase-2_CS.
[Graphical view ]
PANTHERi PTHR11904. PTHR11904. 1 hit.
Pfami PF01048. PNP_UDP_1. 1 hit.
[Graphical view ]
SUPFAMi SSF53167. SSF53167. 1 hit.
TIGRFAMsi TIGR01694. MTAP. 1 hit.
PROSITEi PS01240. PNP_MTAP_2. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

  1. "The draft genome of Ciona intestinalis: insights into chordate and vertebrate origins."
    Dehal P., Satou Y., Campbell R.K., Chapman J., Degnan B., De Tomaso A., Davidson B., Di Gregorio A., Gelpke M., Goodstein D.M., Harafuji N., Hastings K.E., Ho I., Hotta K., Huang W., Kawashima T., Lemaire P., Martinez D.
    , Meinertzhagen I.A., Necula S., Nonaka M., Putnam N., Rash S., Saiga H., Satake M., Terry A., Yamada L., Wang H.G., Awazu S., Azumi K., Boore J., Branno M., Chin-Bow S., DeSantis R., Doyle S., Francino P., Keys D.N., Haga S., Hayashi H., Hino K., Imai K.S., Inaba K., Kano S., Kobayashi K., Kobayashi M., Lee B.I., Makabe K.W., Manohar C., Matassi G., Medina M., Mochizuki Y., Mount S., Morishita T., Miura S., Nakayama A., Nishizaka S., Nomoto H., Ohta F., Oishi K., Rigoutsos I., Sano M., Sasaki A., Sasakura Y., Shoguchi E., Shin-i T., Spagnuolo A., Stainier D., Suzuki M.M., Tassy O., Takatori N., Tokuoka M., Yagi K., Yoshizaki F., Wada S., Zhang C., Hyatt P.D., Larimer F., Detter C., Doggett N., Glavina T., Hawkins T., Richardson P., Lucas S., Kohara Y., Levine M., Satoh N., Rokhsar D.S.
    Science 298:2157-2167(2002) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Entry informationi

Entry nameiMTAP_CIOIN
AccessioniPrimary (citable) accession number: F6X2V8
Entry historyi
Integrated into UniProtKB/Swiss-Prot: January 25, 2012
Last sequence update: July 27, 2011
Last modified: June 11, 2014
This is version 22 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

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