METK2_PONAB
ID METK2_PONAB Reviewed; 395 AA.
AC Q5R5H1;
DT 24-JAN-2006, integrated into UniProtKB/Swiss-Prot.
DT 21-DEC-2004, sequence version 1.
DT 03-AUG-2022, entry version 94.
DE RecName: Full=S-adenosylmethionine synthase isoform type-2;
DE Short=AdoMet synthase 2;
DE EC=2.5.1.6 {ECO:0000250|UniProtKB:P31153};
DE AltName: Full=Methionine adenosyltransferase 2;
DE Short=MAT 2;
GN Name=MAT2A;
OS Pongo abelii (Sumatran orangutan) (Pongo pygmaeus abelii).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae;
OC Pongo.
OX NCBI_TaxID=9601;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC TISSUE=Kidney;
RG The German cDNA consortium;
RL Submitted (NOV-2004) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the formation of S-adenosylmethionine from
CC methionine and ATP. The reaction comprises two steps that are both
CC catalyzed by the same enzyme: formation of S-adenosylmethionine
CC (AdoMet) and triphosphate, and subsequent hydrolysis of the
CC triphosphate. {ECO:0000250|UniProtKB:P31153}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + H2O + L-methionine = diphosphate + phosphate + S-
CC adenosyl-L-methionine; Xref=Rhea:RHEA:21080, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:30616, ChEBI:CHEBI:33019, ChEBI:CHEBI:43474,
CC ChEBI:CHEBI:57844, ChEBI:CHEBI:59789; EC=2.5.1.6;
CC Evidence={ECO:0000250|UniProtKB:P31153};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000250|UniProtKB:P0A817};
CC Note=Binds 2 magnesium ions per subunit. The magnesium ions interact
CC primarily with the substrate. {ECO:0000250|UniProtKB:P31153};
CC -!- COFACTOR:
CC Name=K(+); Xref=ChEBI:CHEBI:29103;
CC Evidence={ECO:0000250|UniProtKB:P0A817};
CC Note=Binds 1 potassium ion per subunit. The potassium ion interacts
CC primarily with the substrate. {ECO:0000250|UniProtKB:P31153};
CC -!- PATHWAY: Amino-acid biosynthesis; S-adenosyl-L-methionine biosynthesis;
CC S-adenosyl-L-methionine from L-methionine: step 1/1.
CC {ECO:0000250|UniProtKB:P31153}.
CC -!- SUBUNIT: Heterotrimer; composed of a catalytic MAT2A homodimer that
CC binds one regulatory MAT2B chain. Heterohexamer; composed of a central,
CC catalytic MAT2A homotetramer flanked on either side by a regulatory
CC MAT2B chain. {ECO:0000250|UniProtKB:P31153}.
CC -!- SIMILARITY: Belongs to the AdoMet synthase family. {ECO:0000305}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; CR860888; CAH92995.1; -; mRNA.
DR RefSeq; NP_001126769.1; NM_001133297.1.
DR AlphaFoldDB; Q5R5H1; -.
DR SMR; Q5R5H1; -.
DR STRING; 9601.ENSPPYP00000013638; -.
DR Ensembl; ENSPPYT00000014193; ENSPPYP00000013638; ENSPPYG00000012229.
DR GeneID; 100173772; -.
DR KEGG; pon:100173772; -.
DR CTD; 4144; -.
DR eggNOG; KOG1506; Eukaryota.
DR GeneTree; ENSGT00950000183185; -.
DR HOGENOM; CLU_041802_0_1_1; -.
DR InParanoid; Q5R5H1; -.
DR OMA; MPYLRPD; -.
DR OrthoDB; 685006at2759; -.
DR TreeFam; TF300511; -.
DR UniPathway; UPA00315; UER00080.
DR Proteomes; UP000001595; Chromosome 2A.
DR GO; GO:0048269; C:methionine adenosyltransferase complex; ISS:UniProtKB.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR GO; GO:0042802; F:identical protein binding; IEA:Ensembl.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0004478; F:methionine adenosyltransferase activity; ISS:UniProtKB.
DR GO; GO:1990830; P:cellular response to leukemia inhibitory factor; IEA:Ensembl.
DR GO; GO:0006730; P:one-carbon metabolic process; IEA:UniProtKB-KW.
DR GO; GO:0051291; P:protein heterooligomerization; ISS:UniProtKB.
DR GO; GO:0034214; P:protein hexamerization; ISS:UniProtKB.
DR GO; GO:0006556; P:S-adenosylmethionine biosynthetic process; ISS:UniProtKB.
DR HAMAP; MF_00086; S_AdoMet_synth1; 1.
DR InterPro; IPR022631; ADOMET_SYNTHASE_CS.
DR InterPro; IPR022630; S-AdoMet_synt_C.
DR InterPro; IPR022629; S-AdoMet_synt_central.
DR InterPro; IPR022628; S-AdoMet_synt_N.
DR InterPro; IPR002133; S-AdoMet_synthetase.
DR InterPro; IPR022636; S-AdoMet_synthetase_sfam.
DR PANTHER; PTHR11964; PTHR11964; 1.
DR Pfam; PF02773; S-AdoMet_synt_C; 1.
DR Pfam; PF02772; S-AdoMet_synt_M; 1.
DR Pfam; PF00438; S-AdoMet_synt_N; 1.
DR PIRSF; PIRSF000497; MAT; 1.
DR SUPFAM; SSF55973; SSF55973; 3.
DR TIGRFAMs; TIGR01034; metK; 1.
DR PROSITE; PS00376; ADOMET_SYNTHASE_1; 1.
DR PROSITE; PS00377; ADOMET_SYNTHASE_2; 1.
PE 2: Evidence at transcript level;
KW Acetylation; ATP-binding; Isopeptide bond; Magnesium; Metal-binding;
KW Nucleotide-binding; One-carbon metabolism; Phosphoprotein; Potassium;
KW Reference proteome; Transferase; Ubl conjugation.
FT CHAIN 1..395
FT /note="S-adenosylmethionine synthase isoform type-2"
FT /id="PRO_0000174438"
FT REGION 113..125
FT /note="Flexible loop"
FT /evidence="ECO:0000250|UniProtKB:P0A817"
FT BINDING 29
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /ligand_note="ligand shared between two neighboring
FT subunits"
FT /note="in other chain"
FT /evidence="ECO:0000250|UniProtKB:P31153"
FT BINDING 31
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000250|UniProtKB:P31153"
FT BINDING 57
FT /ligand="K(+)"
FT /ligand_id="ChEBI:CHEBI:29103"
FT /evidence="ECO:0000250|UniProtKB:P0A817"
FT BINDING 70
FT /ligand="L-methionine"
FT /ligand_id="ChEBI:CHEBI:57844"
FT /ligand_note="ligand shared between two neighboring
FT subunits"
FT /note="in other chain"
FT /evidence="ECO:0000250|UniProtKB:P31153"
FT BINDING 113
FT /ligand="L-methionine"
FT /ligand_id="ChEBI:CHEBI:57844"
FT /ligand_note="ligand shared between two neighboring
FT subunits"
FT /note="in other chain"
FT /evidence="ECO:0000250|UniProtKB:P31153"
FT BINDING 179..181
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /ligand_note="ligand shared between two neighboring
FT subunits"
FT /note="in other chain"
FT /evidence="ECO:0000250|UniProtKB:P31153"
FT BINDING 247..250
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /ligand_note="ligand shared between two neighboring
FT subunits"
FT /note="in other chain"
FT /evidence="ECO:0000250|UniProtKB:P31153"
FT BINDING 258
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /ligand_note="ligand shared between two neighboring
FT subunits"
FT /note="in other chain"
FT /evidence="ECO:0000250|UniProtKB:P31153"
FT BINDING 258
FT /ligand="L-methionine"
FT /ligand_id="ChEBI:CHEBI:57844"
FT /ligand_note="ligand shared between two neighboring
FT subunits"
FT /evidence="ECO:0000250|UniProtKB:P31153"
FT BINDING 264..265
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /ligand_note="ligand shared between two neighboring
FT subunits"
FT /note="in other chain"
FT /evidence="ECO:0000250|UniProtKB:P31153"
FT BINDING 281
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /ligand_note="ligand shared between two neighboring
FT subunits"
FT /evidence="ECO:0000250|UniProtKB:P31153"
FT BINDING 285
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /ligand_note="ligand shared between two neighboring
FT subunits"
FT /evidence="ECO:0000250|UniProtKB:P31153"
FT BINDING 289
FT /ligand="L-methionine"
FT /ligand_id="ChEBI:CHEBI:57844"
FT /ligand_note="ligand shared between two neighboring
FT subunits"
FT /note="in other chain"
FT /evidence="ECO:0000250|UniProtKB:P0A817"
FT BINDING 291
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /ligand_note="ligand shared between two neighboring
FT subunits"
FT /evidence="ECO:0000250|UniProtKB:P31153"
FT MOD_RES 81
FT /note="N6-acetyllysine"
FT /evidence="ECO:0000250|UniProtKB:P31153"
FT MOD_RES 114
FT /note="Phosphoserine"
FT /evidence="ECO:0000250|UniProtKB:P31153"
FT MOD_RES 384
FT /note="Phosphoserine"
FT /evidence="ECO:0000250|UniProtKB:P31153"
FT CROSSLNK 228
FT /note="Glycyl lysine isopeptide (Lys-Gly) (interchain with
FT G-Cter in SUMO2)"
FT /evidence="ECO:0000250|UniProtKB:P31153"
FT CROSSLNK 234
FT /note="Glycyl lysine isopeptide (Lys-Gly) (interchain with
FT G-Cter in SUMO2)"
FT /evidence="ECO:0000250|UniProtKB:P31153"
SQ SEQUENCE 395 AA; 43661 MW; 2E7D1B91CC4F7BDD CRC64;
MNGQLNGFHE AFIEEGTFLF TSESVGEGHP DKICDQISDA VLDAHLQQDP DAKVACETVA
KTGMILLAGE ITSRAAVDYQ KVVREAVKHI GYDDSSKGFD YKTCNVLVAL EQQSPDIAQG
VHLDRNEEDI GAGDQGLMFG YATDETEECM PLTIVLAHKL NAKLAELRRN GTLPWLRPDS
KTQVTVQYMQ DRGAVLPIRV HTIVISVQHD EEVCLDEMRD ALKEKVIKAV VPAKYLDEDT
IYHLQPSGRF VIGGPQGDAG LTGRKIIVDT YGGWGAHGGG AFSGKDYTKV DRSAAYAARW
VAKSLVKGGL CRRVLVQVSY AIGVSHPLSI SIFHYGTSQK SERELLEIVK KNFDLRPGVI
VRDLDLKKPI YQRTAAYGHF GRDSFPWEVP KKLKY
