Reviewed, UniProtKB/Swiss-Prot Q5R5H1 (METK2_PONAB)

Names and origin

Protein names

Recommended name:
    S-adenosylmethionine synthetase isoform type-2
      Short name=AdoMet synthetase 2
    EC=2.5.1.6
Alternative name(s):
    Methionine adenosyltransferase 2
      Short name=MAT 2

Gene names

Name:

MAT2A

Organism

Pongo abelii (Sumatran orangutan)

Taxonomic identifier

9601 [NCBI]

Taxonomic lineage

Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Pongo

Protein attributes

Sequence length	395 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Evidence at transcript level.

General annotation (Comments)

Function	Catalyzes the formation of S-adenosylmethionine from methionine and ATP By similarity.
Catalytic activity	ATP + L-methionine + H2O = phosphate + diphosphate + S-adenosyl-L-methionine.
Cofactor	Binds 2 divalent ions per subunit. Magnesium or cobalt By similarity. Binds 1 potassium ion per subunit By similarity.
Pathway	Amino-acid biosynthesis; S-adenosyl-L-methionine biosynthesis; S-adenosyl-L-methionine from L-methionine: step 1/1.
Subunit structure	Heterotetramer composed of 2 catalytic alpha subunits (alpha and alpha') (MAT2A) and 1 copy of beta subunit (MAT2B) By similarity.
Post-translational modification	The alpha' subunit is a post-translationally modified version of MAT2A By similarity.
Sequence similarities	Belongs to the AdoMet synthetase family.

Ontologies

Keywords
Biological process	One-carbon metabolism
Ligand	ATP-binding Cobalt Magnesium Metal-binding Nucleotide-binding Potassium
Molecular function	Transferase
PTM	Acetylation Phosphoprotein
Gene Ontology (GO)
Biological process	one-carbon metabolic process Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	ATP binding Inferred from electronic annotation. Source: UniProtKB-KW cobalt ion binding Inferred from electronic annotation. Source: UniProtKB-KW magnesium ion binding Inferred from electronic annotation. Source: UniProtKB-KW methionine adenosyltransferase activity Inferred from electronic annotation. Source: EC potassium ion binding Inferred from electronic annotation. Source: UniProtKB-KW
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 395	395	S-adenosylmethionine synthetase isoform type-2		PRO_0000174438
Regions
	Nucleotide binding	131 – 136	6	ATP Potential
Sites
	Metal binding	31	1	Magnesium By similarity
	Metal binding	57	1	Potassium By similarity
	Metal binding	283	1	Potassium By similarity
	Metal binding	291	1	Magnesium By similarity
	Binding site	159	1	ATP Potential
Amino acid modifications
	Modified residue	81	1	N6-acetyllysine By similarity
	Modified residue	114	1	Phosphoserine By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q5R5H1-1 [UniParc]. Last modified December 21, 2004. Version 1. Checksum: 2E7D1B91CC4F7BDD	FASTA	395	43,661
	10 20 30 40 50 60 MNGQLNGFHE AFIEEGTFLF TSESVGEGHP DKICDQISDA VLDAHLQQDP DAKVACETVA 70 80 90 100 110 120 KTGMILLAGE ITSRAAVDYQ KVVREAVKHI GYDDSSKGFD YKTCNVLVAL EQQSPDIAQG 130 140 150 160 170 180 VHLDRNEEDI GAGDQGLMFG YATDETEECM PLTIVLAHKL NAKLAELRRN GTLPWLRPDS 190 200 210 220 230 240 KTQVTVQYMQ DRGAVLPIRV HTIVISVQHD EEVCLDEMRD ALKEKVIKAV VPAKYLDEDT 250 260 270 280 290 300 IYHLQPSGRF VIGGPQGDAG LTGRKIIVDT YGGWGAHGGG AFSGKDYTKV DRSAAYAARW 310 320 330 340 350 360 VAKSLVKGGL CRRVLVQVSY AIGVSHPLSI SIFHYGTSQK SERELLEIVK KNFDLRPGVI 370 380 390 VRDLDLKKPI YQRTAAYGHF GRDSFPWEVP KKLKY

References

[1]	The German cDNA consortium Submitted (NOV-2004) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. Tissue: Kidney.

Cross-references

Sequence databases
EMBLGenBankDDBJ	CR860888 mRNA. Translation: CAH92995.1.
RefSeq	NP_001126769.1.
UniGene	Pab.18614
3D structure databases
SMR	Q5R5H1. Positions 16-395.
ModBase	Search...
Genome annotation databases
GeneID	100173772.
Organism-specific databases
CTD	100173772.
Phylogenomic databases
HOVERGEN	Q5R5H1.
OMA	FHDAFIE.
Enzyme and pathway databases
BRENDA	2.5.1.6. 269192.
Family and domain databases
InterPro	IPR002133. S-AdoMet_synthetase. [Graphical view]
PANTHER	PTHR11964. S-AdoMet_synt. 1 hit.
Pfam	PF02773. S-AdoMet_synt_C. 1 hit. PF02772. S-AdoMet_synt_M. 1 hit. PF00438. S-AdoMet_synt_N. 1 hit. [Graphical view]
PIRSF	PIRSF000497. MAT. 1 hit.
TIGRFAMs	TIGR01034. metK. 1 hit.
PROSITE	PS00376. ADOMET_SYNTHETASE_1. 1 hit. PS00377. ADOMET_SYNTHETASE_2. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

METK2_PONAB

Accession

Primary (citable) accession number: Q5R5H1

Entry history

Integrated into UniProtKB/Swiss-Prot:	January 24, 2006
Last sequence update:	December 21, 2004
Last modified:	November 3, 2009
This is version 35 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HPI (Human Proteome Initiative)