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ASMT1_ORYSJ
ID   ASMT1_ORYSJ             Reviewed;         364 AA.
AC   Q6EPG8;
DT   02-NOV-2016, integrated into UniProtKB/Swiss-Prot.
DT   16-AUG-2004, sequence version 1.
DT   03-AUG-2022, entry version 137.
DE   RecName: Full=Acetylserotonin O-methyltransferase 1 {ECO:0000305};
DE            Short=OsASMT1 {ECO:0000303|PubMed:24134674};
DE            EC=2.1.1.4 {ECO:0000269|PubMed:21210840};
GN   Name=ASMT1 {ECO:0000303|PubMed:24033370};
GN   Synonyms=ASMT {ECO:0000303|PubMed:21210840};
GN   OrderedLocusNames=Os09g0344500 {ECO:0000312|EMBL:BAT07597.1},
GN   LOC_Os09g17560 {ECO:0000305};
GN   ORFNames=OSJNBb0057I13.39 {ECO:0000312|EMBL:BAD29452.1},
GN   OSJNBb0085I16.5 {ECO:0000312|EMBL:BAD29092.1};
OS   Oryza sativa subsp. japonica (Rice).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; Liliopsida; Poales; Poaceae; BOP clade;
OC   Oryzoideae; Oryzeae; Oryzinae; Oryza; Oryza sativa.
OX   NCBI_TaxID=39947;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Nipponbare;
RX   PubMed=16100779; DOI=10.1038/nature03895;
RG   International rice genome sequencing project (IRGSP);
RT   "The map-based sequence of the rice genome.";
RL   Nature 436:793-800(2005).
RN   [2]
RP   GENOME REANNOTATION.
RC   STRAIN=cv. Nipponbare;
RX   PubMed=18089549; DOI=10.1093/nar/gkm978;
RG   The rice annotation project (RAP);
RT   "The rice annotation project database (RAP-DB): 2008 update.";
RL   Nucleic Acids Res. 36:D1028-D1033(2008).
RN   [3]
RP   GENOME REANNOTATION.
RC   STRAIN=cv. Nipponbare;
RX   PubMed=24280374; DOI=10.1186/1939-8433-6-4;
RA   Kawahara Y., de la Bastide M., Hamilton J.P., Kanamori H., McCombie W.R.,
RA   Ouyang S., Schwartz D.C., Tanaka T., Wu J., Zhou S., Childs K.L.,
RA   Davidson R.M., Lin H., Quesada-Ocampo L., Vaillancourt B., Sakai H.,
RA   Lee S.S., Kim J., Numa H., Itoh T., Buell C.R., Matsumoto T.;
RT   "Improvement of the Oryza sativa Nipponbare reference genome using next
RT   generation sequence and optical map data.";
RL   Rice 6:4-4(2013).
RN   [4]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC   STRAIN=cv. Nipponbare;
RX   PubMed=12869764; DOI=10.1126/science.1081288;
RG   The rice full-length cDNA consortium;
RT   "Collection, mapping, and annotation of over 28,000 cDNA clones from
RT   japonica rice.";
RL   Science 301:376-379(2003).
RN   [5]
RP   INDUCTION BY COPPER.
RX   PubMed=18676621; DOI=10.1093/jxb/ern196;
RA   Sudo E., Itouga M., Yoshida-Hatanaka K., Ono Y., Sakakibara H.;
RT   "Gene expression and sensitivity in response to copper stress in rice
RT   leaves.";
RL   J. Exp. Bot. 59:3465-3474(2008).
RN   [6]
RP   FUNCTION, CATALYTIC ACTIVITY, AND INDUCTION.
RX   PubMed=21210840; DOI=10.1111/j.1600-079x.2010.00841.x;
RA   Kang K., Kong K., Park S., Natsagdorj U., Kim Y.S., Back K.;
RT   "Molecular cloning of a plant N-acetylserotonin methyltransferase and its
RT   expression characteristics in rice.";
RL   J. Pineal Res. 50:304-309(2011).
RN   [7]
RP   INDUCTION BY BUTAFENACIL.
RX   PubMed=22998587; DOI=10.1111/jpi.12011;
RA   Kang K., Lee K., Park S., Byeon Y., Back K.;
RT   "Molecular cloning of rice serotonin N-acetyltransferase, the penultimate
RT   gene in plant melatonin biosynthesis.";
RL   J. Pineal Res. 55:7-13(2013).
RN   [8]
RP   FUNCTION, BIOPHYSICOCHEMICAL PROPERTIES, AND INDUCTION BY DARK.
RX   PubMed=22747959; DOI=10.1111/j.1600-079x.2012.01019.x;
RA   Park S., Byeon Y., Kim Y.S., Back K.;
RT   "Kinetic analysis of purified recombinant rice N-acetylserotonin
RT   methyltransferase and peak melatonin production in etiolated rice shoots.";
RL   J. Pineal Res. 54:139-144(2013).
RN   [9]
RP   FUNCTION, AND TISSUE SPECIFICITY.
RX   PubMed=24033370; DOI=10.1111/jpi.12088;
RA   Park S., Byeon Y., Back K.;
RT   "Functional analyses of three ASMT gene family members in rice plants.";
RL   J. Pineal Res. 55:409-415(2013).
RN   [10]
RP   INDUCTION BY UV-C.
RX   PubMed=24035516; DOI=10.1016/j.phytochem.2013.08.012;
RA   Park H.L., Lee S.W., Jung K.H., Hahn T.R., Cho M.H.;
RT   "Transcriptomic analysis of UV-treated rice leaves reveals UV-induced
RT   phytoalexin biosynthetic pathways and their regulatory networks in rice.";
RL   Phytochemistry 96:57-71(2013).
RN   [11]
RP   FUNCTION, BIOPHYSICOCHEMICAL PROPERTIES, AND SUBCELLULAR LOCATION.
RX   PubMed=24134674; DOI=10.1111/jpi.12103;
RA   Byeon Y., Lee H.Y., Lee K., Park S., Back K.;
RT   "Cellular localization and kinetics of the rice melatonin biosynthetic
RT   enzymes SNAT and ASMT.";
RL   J. Pineal Res. 56:107-114(2014).
CC   -!- FUNCTION: Methyltransferase which catalyzes the transfer of a methyl
CC       group onto N-acetylserotonin, producing melatonin (N-acetyl-5-
CC       methoxytryptamine). {ECO:0000269|PubMed:21210840,
CC       ECO:0000269|PubMed:22747959, ECO:0000269|PubMed:24033370,
CC       ECO:0000269|PubMed:24134674}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=N-acetylserotonin + S-adenosyl-L-methionine = H(+) + melatonin
CC         + S-adenosyl-L-homocysteine; Xref=Rhea:RHEA:15573, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:16796, ChEBI:CHEBI:17697, ChEBI:CHEBI:57856,
CC         ChEBI:CHEBI:59789; EC=2.1.1.4;
CC         Evidence={ECO:0000269|PubMed:21210840};
CC   -!- BIOPHYSICOCHEMICAL PROPERTIES:
CC       Kinetic parameters:
CC         KM=222 uM for N-acetylserotonin (at 55 degrees Celsius)
CC         {ECO:0000269|PubMed:24134674};
CC         KM=864 uM for N-acetylserotonin (at 30 degrees Celsius)
CC         {ECO:0000269|PubMed:22747959};
CC         Vmax=9 nmol/min/mg enzyme with N-acetylserotonin as substrate at 55
CC         degrees Celsius) {ECO:0000269|PubMed:24134674};
CC         Vmax=13.8 pmol/min/mg enzyme with N-acetylserotonin as substrate (at
CC         30 degrees Celsius) {ECO:0000269|PubMed:24134674};
CC       pH dependence:
CC         Optimum pH is 7.8. {ECO:0000269|PubMed:24134674};
CC       Temperature dependence:
CC         Optimum temperature is 55 degrees Celsius.
CC         {ECO:0000269|PubMed:24134674};
CC   -!- PATHWAY: Aromatic compound metabolism; melatonin biosynthesis;
CC       melatonin from serotonin: step 1/2. {ECO:0000305}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000250|UniProtKB:P46597}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000269|PubMed:24134674}.
CC   -!- TISSUE SPECIFICITY: Expressed in leaves, stems and flowers.
CC       {ECO:0000269|PubMed:24033370}.
CC   -!- INDUCTION: By senescence, abscisic acid (ABA), acifluorfen, salt and
CC       cadmium (PubMed:21210840). Induced by copper (PubMed:18676621,
CC       PubMed:21210840). Induced by butafenacil (PubMed:22998587). Induced in
CC       dark-grown etiolated shoot (PubMed:22747959). Induced by UV-C
CC       (PubMed:24035516). {ECO:0000269|PubMed:18676621,
CC       ECO:0000269|PubMed:21210840, ECO:0000269|PubMed:22747959,
CC       ECO:0000269|PubMed:22998587, ECO:0000269|PubMed:24035516}.
CC   -!- SIMILARITY: Belongs to the class I-like SAM-binding methyltransferase
CC       superfamily. Cation-independent O-methyltransferase family.
CC       {ECO:0000305}.
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DR   EMBL; AP005700; BAD29092.1; -; Genomic_DNA.
DR   EMBL; AP005881; BAD29452.1; -; Genomic_DNA.
DR   EMBL; AP008215; BAF24845.1; -; Genomic_DNA.
DR   EMBL; AP014965; BAT07597.1; -; Genomic_DNA.
DR   EMBL; AK072740; BAG93122.1; -; mRNA.
DR   RefSeq; XP_015610997.1; XM_015755511.1.
DR   RefSeq; XP_015610998.1; XM_015755512.1.
DR   AlphaFoldDB; Q6EPG8; -.
DR   SMR; Q6EPG8; -.
DR   STRING; 4530.OS09T0344500-01; -.
DR   PaxDb; Q6EPG8; -.
DR   PRIDE; Q6EPG8; -.
DR   EnsemblPlants; Os09t0344500-01; Os09t0344500-01; Os09g0344500.
DR   GeneID; 4346795; -.
DR   Gramene; Os09t0344500-01; Os09t0344500-01; Os09g0344500.
DR   KEGG; osa:4346795; -.
DR   eggNOG; KOG3178; Eukaryota.
DR   HOGENOM; CLU_005533_7_0_1; -.
DR   InParanoid; Q6EPG8; -.
DR   OMA; NEQVMST; -.
DR   OrthoDB; 817726at2759; -.
DR   SABIO-RK; Q6EPG8; -.
DR   UniPathway; UPA00837; UER00815.
DR   Proteomes; UP000000763; Chromosome 9.
DR   Proteomes; UP000059680; Chromosome 9.
DR   GO; GO:0005737; C:cytoplasm; IDA:UniProtKB.
DR   GO; GO:0017096; F:acetylserotonin O-methyltransferase activity; IDA:UniProtKB.
DR   GO; GO:0008171; F:O-methyltransferase activity; IBA:GO_Central.
DR   GO; GO:0046983; F:protein dimerization activity; IEA:InterPro.
DR   GO; GO:0008757; F:S-adenosylmethionine-dependent methyltransferase activity; IBA:GO_Central.
DR   GO; GO:0019438; P:aromatic compound biosynthetic process; IBA:GO_Central.
DR   GO; GO:0030187; P:melatonin biosynthetic process; IDA:UniProtKB.
DR   GO; GO:0032259; P:methylation; IBA:GO_Central.
DR   Gene3D; 1.10.10.10; -; 1.
DR   Gene3D; 3.40.50.150; -; 1.
DR   InterPro; IPR016461; COMT-like.
DR   InterPro; IPR001077; O_MeTrfase_dom.
DR   InterPro; IPR012967; Plant_MeTrfase_dimerisation.
DR   InterPro; IPR029063; SAM-dependent_MTases_sf.
DR   InterPro; IPR036388; WH-like_DNA-bd_sf.
DR   InterPro; IPR036390; WH_DNA-bd_sf.
DR   PANTHER; PTHR11746; PTHR11746; 1.
DR   Pfam; PF08100; Dimerisation; 1.
DR   Pfam; PF00891; Methyltransf_2; 1.
DR   PIRSF; PIRSF005739; O-mtase; 1.
DR   SUPFAM; SSF46785; SSF46785; 1.
DR   SUPFAM; SSF53335; SSF53335; 1.
DR   PROSITE; PS51683; SAM_OMT_II; 1.
PE   1: Evidence at protein level;
KW   Cytoplasm; Melatonin biosynthesis; Methyltransferase; Reference proteome;
KW   S-adenosyl-L-methionine; Transferase.
FT   CHAIN           1..364
FT                   /note="Acetylserotonin O-methyltransferase 1"
FT                   /id="PRO_0000437947"
FT   ACT_SITE        269
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01020"
FT   ACT_SITE        300
FT                   /evidence="ECO:0000250|UniProtKB:F1DBB3"
FT   ACT_SITE        330
FT                   /evidence="ECO:0000250|UniProtKB:F1DBB3"
FT   BINDING         208
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000250|UniProtKB:P28002"
FT   BINDING         231
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01020"
FT   BINDING         251
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000250|UniProtKB:P28002"
FT   BINDING         252
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000250|UniProtKB:P28002"
FT   BINDING         265
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000250|UniProtKB:P28002"
SQ   SEQUENCE   364 AA;  40095 MW;  B77C00F1EC496AB1 CRC64;
     MAQNVQENEQ VMSTEDLLQA QIELYHHCLA FIKSMALRAA TDLRIPDAIH CNGGAATLTD
     LAAHVGLHPT KLSHLRRLMR VLTLSGIFTV HDGDGEATYT LTRVSRLLLS DGVERTHGLS
     QMVRVFVNPV AVASQFSLHE WFTVEKAAAV SLFEVAHGCT RWEMIANDSK DGSMFNAGMV
     EDSSVAMDII LRKSSNVFRG INSLVDVGGG YGAVAAAVVR AFPDIKCTVL DLPHIVAKAP
     SNNNIQFVGG DLFEFIPAAD VVLLKCILHC WQHDDCVKIM RRCKEAISAR DAGGKVILIE
     VVVGIGSNET VPKEMQLLFD VFMMYTDGIE REEHEWKKIF LEAGFSDYKI IPVLGVRSII
     EVYP
 
 
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