A7QJG1 (METK3_VITVI) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
S-adenosylmethionine synthase 3
Short name=AdoMet synthase 3
EC=2.5.1.6

Alternative name(s):
Methionine adenosyltransferase 3
Short name=MAT 3

Gene names

Name:	METK3
ORF Names:	GSVIVT00000624001, LOC100245243

Organism

Vitis vinifera (Grape)

Taxonomic identifier

29760 [NCBI]

Taxonomic lineage

Eukaryota › Viridiplantae › Streptophyta › Embryophyta › Tracheophyta › Spermatophyta › Magnoliophyta › eudicotyledons › core eudicotyledons › rosids › Vitales › Vitaceae › Vitis

Protein attributes

Sequence length	389 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	Catalyzes the formation of S-adenosylmethionine from methionine and ATP. The overall synthetic reaction is composed of two sequential steps, AdoMet formation and the subsequent tripolyphosphate hydrolysis which occurs prior to release of AdoMet from the enzyme 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	Homotetramer By similarity.
Subcellular location	Cytoplasm By similarity.
Sequence similarities	Belongs to the AdoMet synthase family.

Ontologies

Keywords
Biological process	One-carbon metabolism
Cellular component	Cytoplasm
Ligand	ATP-binding Cobalt Magnesium Metal-binding Nucleotide-binding Potassium
Molecular function	Transferase
Gene Ontology (GO)
Biological process	S-adenosylmethionine biosynthetic process Inferred from electronic annotation. Source: InterPro one-carbon metabolic process Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	cytoplasm Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	ATP binding Inferred from electronic annotation. Source: UniProtKB-KW methionine adenosyltransferase activity Inferred from electronic annotation. Source: EC
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 389	389	S-adenosylmethionine synthase 3		PRO_0000363056
Regions
	Nucleotide binding	119 – 124	6	ATP Potential
	Nucleotide binding	267 – 274	8	ATP Potential
Sites
	Metal binding	17	1	Magnesium By similarity
	Metal binding	43	1	Potassium By similarity
	Metal binding	271	1	Potassium By similarity
	Metal binding	279	1	Magnesium By similarity
	Binding site	147	1	ATP Potential

Sequences

	Sequence		Length	Mass (Da)
	A7QJG1 [UniParc]. Last modified October 2, 2007. Version 1. Checksum: 694C3005E7EA8FCA	FASTA	389	42,618
	10 20 30 40 50 60 MDTFLFTSES VNEGHPDKLC DQVSDAILDA CLEQDPESKV ACETCSKTNM VMVFGEITTK 70 80 90 100 110 120 AKVDYEKIVR DTCRGIGFVS ADVGLDADNC KVLVNIEQQS PDIAQGVHGH LSKKPEEIGA 130 140 150 160 170 180 GDQGHMFGYA TDETPELMPL THVLATKLGA KLTEVRKNKT CPWLRPDGKT QVTVEYRNEG 190 200 210 220 230 240 GAMVPIRVHT VLISTQHDET VTNDQIAKEL REHVIKPVIP SKFMDDKTIF HLNPSGRFVI 250 260 270 280 290 300 GGPHGDAGLT GRKIIIDTYG GWGAHGGGAF SGKDPTKVDR SGAYIVRQAA KSVVASGLAR 310 320 330 340 350 360 RCLVQVSYAI GVPEPLSVFV DTYKTGKIPD KDILDLIKEN FDFRPGMIAI NLDLKRGGNF 370 380 RFQKTAAYGH FGRDDPDFTW ETVKLLKKA

References

[1]

"The grapevine genome sequence suggests ancestral hexaploidization in major angiosperm phyla." Jaillon O., Aury J.-M., Noel B., Policriti A., Clepet C., Casagrande A., Choisne N., Aubourg S., Vitulo N., Jubin C., Vezzi A., Legeai F., Hugueney P., Dasilva C., Horner D., Mica E., Jublot D., Poulain J. , Bruyere C., Billault A., Segurens B., Gouyvenoux M., Ugarte E., Cattonaro F., Anthouard V., Vico V., Del Fabbro C., Alaux M., Di Gaspero G., Dumas V., Felice N., Paillard S., Juman I., Moroldo M., Scalabrin S., Canaguier A., Le Clainche I., Malacrida G., Durand E., Pesole G., Laucou V., Chatelet P., Merdinoglu D., Delledonne M., Pezzotti M., Lecharny A., Scarpelli C., Artiguenave F., Pe M.E., Valle G., Morgante M., Caboche M., Adam-Blondon A.-F., Weissenbach J., Quetier F., Wincker P. Nature 449:463-467(2007) [PubMed: 17721507] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: cv. Pinot noir / PN40024.

Cross-references

Sequence databases
RefSeq	XP_002270032.1. XM_002269996.1. XP_002270100.1. XM_002270064.1.
UniGene	Vvi.12566.
3D structure databases
ProteinModelPortal	A7QJG1.
SMR	A7QJG1. Positions 3-387.
ModBase	Search...
Protein-protein interaction databases
STRING	A7QJG1.
Proteomic databases
PRIDE	A7QJG1.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	100245243.
KEGG	vvi:100245243.
Phylogenomic databases
HOGENOM	HBG443662.
OMA	RSTCREI.
ProtClustDB	PLN02243.
Family and domain databases
InterPro	IPR022631. ADOMET_SYNTHASE_CS. IPR022630. S-AdoMet_synt_C. IPR022629. S-AdoMet_synt_central. IPR022628. S-AdoMet_synt_N. IPR002133. S-AdoMet_synthetase. IPR022636. S-AdoMet_synthetase_sfam. [Graphical view]
KO	K00789.
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.
SUPFAM	SSF55973. S-AdoMet_synt. 3 hits.
TIGRFAMs	TIGR01034. MetK. 1 hit.
PROSITE	PS00376. ADOMET_SYNTHASE_1. 1 hit. PS00377. ADOMET_SYNTHASE_2. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

METK3_VITVI

Accession

Primary (citable) accession number: A7QJG1

Entry history

Integrated into UniProtKB/Swiss-Prot:	February 10, 2009
Last sequence update:	October 2, 2007
Last modified:	December 14, 2011
This is version 35 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Plant Protein Annotation Program