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APX6_ARATH
ID   APX6_ARATH              Reviewed;         329 AA.
AC   Q8GY91; O49360;
DT   28-NOV-2006, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2003, sequence version 1.
DT   03-AUG-2022, entry version 112.
DE   RecName: Full=Putative L-ascorbate peroxidase 6;
DE            Short=AtAPx08;
DE            EC=1.11.1.11;
GN   Name=APX6; OrderedLocusNames=At4g32320; ORFNames=F10M6.50, F8B4.20;
OS   Arabidopsis thaliana (Mouse-ear cress).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   rosids; malvids; Brassicales; Brassicaceae; Camelineae; Arabidopsis.
OX   NCBI_TaxID=3702;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Columbia;
RX   PubMed=10617198; DOI=10.1038/47134;
RA   Mayer K.F.X., Schueller C., Wambutt R., Murphy G., Volckaert G., Pohl T.,
RA   Duesterhoeft A., Stiekema W., Entian K.-D., Terryn N., Harris B.,
RA   Ansorge W., Brandt P., Grivell L.A., Rieger M., Weichselgartner M.,
RA   de Simone V., Obermaier B., Mache R., Mueller M., Kreis M., Delseny M.,
RA   Puigdomenech P., Watson M., Schmidtheini T., Reichert B., Portetelle D.,
RA   Perez-Alonso M., Boutry M., Bancroft I., Vos P., Hoheisel J.,
RA   Zimmermann W., Wedler H., Ridley P., Langham S.-A., McCullagh B.,
RA   Bilham L., Robben J., van der Schueren J., Grymonprez B., Chuang Y.-J.,
RA   Vandenbussche F., Braeken M., Weltjens I., Voet M., Bastiaens I., Aert R.,
RA   Defoor E., Weitzenegger T., Bothe G., Ramsperger U., Hilbert H., Braun M.,
RA   Holzer E., Brandt A., Peters S., van Staveren M., Dirkse W., Mooijman P.,
RA   Klein Lankhorst R., Rose M., Hauf J., Koetter P., Berneiser S., Hempel S.,
RA   Feldpausch M., Lamberth S., Van den Daele H., De Keyser A., Buysshaert C.,
RA   Gielen J., Villarroel R., De Clercq R., van Montagu M., Rogers J.,
RA   Cronin A., Quail M.A., Bray-Allen S., Clark L., Doggett J., Hall S.,
RA   Kay M., Lennard N., McLay K., Mayes R., Pettett A., Rajandream M.A.,
RA   Lyne M., Benes V., Rechmann S., Borkova D., Bloecker H., Scharfe M.,
RA   Grimm M., Loehnert T.-H., Dose S., de Haan M., Maarse A.C., Schaefer M.,
RA   Mueller-Auer S., Gabel C., Fuchs M., Fartmann B., Granderath K., Dauner D.,
RA   Herzl A., Neumann S., Argiriou A., Vitale D., Liguori R., Piravandi E.,
RA   Massenet O., Quigley F., Clabauld G., Muendlein A., Felber R., Schnabl S.,
RA   Hiller R., Schmidt W., Lecharny A., Aubourg S., Chefdor F., Cooke R.,
RA   Berger C., Monfort A., Casacuberta E., Gibbons T., Weber N., Vandenbol M.,
RA   Bargues M., Terol J., Torres A., Perez-Perez A., Purnelle B., Bent E.,
RA   Johnson S., Tacon D., Jesse T., Heijnen L., Schwarz S., Scholler P.,
RA   Heber S., Francs P., Bielke C., Frishman D., Haase D., Lemcke K.,
RA   Mewes H.-W., Stocker S., Zaccaria P., Bevan M., Wilson R.K.,
RA   de la Bastide M., Habermann K., Parnell L., Dedhia N., Gnoj L., Schutz K.,
RA   Huang E., Spiegel L., Sekhon M., Murray J., Sheet P., Cordes M.,
RA   Abu-Threideh J., Stoneking T., Kalicki J., Graves T., Harmon G.,
RA   Edwards J., Latreille P., Courtney L., Cloud J., Abbott A., Scott K.,
RA   Johnson D., Minx P., Bentley D., Fulton B., Miller N., Greco T., Kemp K.,
RA   Kramer J., Fulton L., Mardis E., Dante M., Pepin K., Hillier L.W.,
RA   Nelson J., Spieth J., Ryan E., Andrews S., Geisel C., Layman D., Du H.,
RA   Ali J., Berghoff A., Jones K., Drone K., Cotton M., Joshu C., Antonoiu B.,
RA   Zidanic M., Strong C., Sun H., Lamar B., Yordan C., Ma P., Zhong J.,
RA   Preston R., Vil D., Shekher M., Matero A., Shah R., Swaby I.K.,
RA   O'Shaughnessy A., Rodriguez M., Hoffman J., Till S., Granat S., Shohdy N.,
RA   Hasegawa A., Hameed A., Lodhi M., Johnson A., Chen E., Marra M.A.,
RA   Martienssen R., McCombie W.R.;
RT   "Sequence and analysis of chromosome 4 of the plant Arabidopsis thaliana.";
RL   Nature 402:769-777(1999).
RN   [2]
RP   GENOME REANNOTATION.
RC   STRAIN=cv. Columbia;
RX   PubMed=27862469; DOI=10.1111/tpj.13415;
RA   Cheng C.Y., Krishnakumar V., Chan A.P., Thibaud-Nissen F., Schobel S.,
RA   Town C.D.;
RT   "Araport11: a complete reannotation of the Arabidopsis thaliana reference
RT   genome.";
RL   Plant J. 89:789-804(2017).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC   STRAIN=cv. Columbia;
RX   PubMed=11910074; DOI=10.1126/science.1071006;
RA   Seki M., Narusaka M., Kamiya A., Ishida J., Satou M., Sakurai T.,
RA   Nakajima M., Enju A., Akiyama K., Oono Y., Muramatsu M., Hayashizaki Y.,
RA   Kawai J., Carninci P., Itoh M., Ishii Y., Arakawa T., Shibata K.,
RA   Shinagawa A., Shinozaki K.;
RT   "Functional annotation of a full-length Arabidopsis cDNA collection.";
RL   Science 296:141-145(2002).
RN   [4]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC   STRAIN=cv. Columbia;
RX   PubMed=14593172; DOI=10.1126/science.1088305;
RA   Yamada K., Lim J., Dale J.M., Chen H., Shinn P., Palm C.J., Southwick A.M.,
RA   Wu H.C., Kim C.J., Nguyen M., Pham P.K., Cheuk R.F., Karlin-Newmann G.,
RA   Liu S.X., Lam B., Sakano H., Wu T., Yu G., Miranda M., Quach H.L.,
RA   Tripp M., Chang C.H., Lee J.M., Toriumi M.J., Chan M.M., Tang C.C.,
RA   Onodera C.S., Deng J.M., Akiyama K., Ansari Y., Arakawa T., Banh J.,
RA   Banno F., Bowser L., Brooks S.Y., Carninci P., Chao Q., Choy N., Enju A.,
RA   Goldsmith A.D., Gurjal M., Hansen N.F., Hayashizaki Y., Johnson-Hopson C.,
RA   Hsuan V.W., Iida K., Karnes M., Khan S., Koesema E., Ishida J., Jiang P.X.,
RA   Jones T., Kawai J., Kamiya A., Meyers C., Nakajima M., Narusaka M.,
RA   Seki M., Sakurai T., Satou M., Tamse R., Vaysberg M., Wallender E.K.,
RA   Wong C., Yamamura Y., Yuan S., Shinozaki K., Davis R.W., Theologis A.,
RA   Ecker J.R.;
RT   "Empirical analysis of transcriptional activity in the Arabidopsis
RT   genome.";
RL   Science 302:842-846(2003).
CC   -!- FUNCTION: Plays a key role in hydrogen peroxide removal. {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H2O2 + L-ascorbate = 2 H2O + L-dehydroascorbate;
CC         Xref=Rhea:RHEA:22996, ChEBI:CHEBI:15377, ChEBI:CHEBI:16240,
CC         ChEBI:CHEBI:38290, ChEBI:CHEBI:58539; EC=1.11.1.11;
CC   -!- COFACTOR:
CC       Name=heme b; Xref=ChEBI:CHEBI:60344;
CC       Note=Binds 1 heme b (iron(II)-protoporphyrin IX) group per subunit.;
CC   -!- SIMILARITY: Belongs to the peroxidase family. Ascorbate peroxidase
CC       subfamily. {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=CAA16959.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305};
CC       Sequence=CAA22559.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305};
CC       Sequence=CAB79949.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305};
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DR   EMBL; AL021811; CAA16959.1; ALT_SEQ; Genomic_DNA.
DR   EMBL; AL034567; CAA22559.1; ALT_SEQ; Genomic_DNA.
DR   EMBL; AL161581; CAB79949.1; ALT_SEQ; Genomic_DNA.
DR   EMBL; CP002687; AEE86039.1; -; Genomic_DNA.
DR   EMBL; AK117784; BAC42431.1; -; mRNA.
DR   EMBL; BT008349; AAP37708.1; -; mRNA.
DR   PIR; T05342; T05342.
DR   RefSeq; NP_194958.2; NM_119384.4.
DR   AlphaFoldDB; Q8GY91; -.
DR   SMR; Q8GY91; -.
DR   BioGRID; 14652; 1.
DR   STRING; 3702.AT4G32320.1; -.
DR   PeroxiBase; 3952; AtAPx-R.
DR   PaxDb; Q8GY91; -.
DR   PRIDE; Q8GY91; -.
DR   ProteomicsDB; 246493; -.
DR   EnsemblPlants; AT4G32320.1; AT4G32320.1; AT4G32320.
DR   GeneID; 829366; -.
DR   Gramene; AT4G32320.1; AT4G32320.1; AT4G32320.
DR   KEGG; ath:AT4G32320; -.
DR   Araport; AT4G32320; -.
DR   TAIR; locus:2127766; AT4G32320.
DR   eggNOG; ENOG502QU9K; Eukaryota.
DR   HOGENOM; CLU_036959_4_0_1; -.
DR   InParanoid; Q8GY91; -.
DR   OMA; LVQQVSW; -.
DR   OrthoDB; 902776at2759; -.
DR   PhylomeDB; Q8GY91; -.
DR   BioCyc; ARA:AT4G32320-MON; -.
DR   PRO; PR:Q8GY91; -.
DR   Proteomes; UP000006548; Chromosome 4.
DR   ExpressionAtlas; Q8GY91; baseline and differential.
DR   Genevisible; Q8GY91; AT.
DR   GO; GO:0005829; C:cytosol; TAS:TAIR.
DR   GO; GO:0020037; F:heme binding; IEA:InterPro.
DR   GO; GO:0016688; F:L-ascorbate peroxidase activity; IEA:UniProtKB-EC.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0004601; F:peroxidase activity; IDA:TAIR.
DR   GO; GO:0034599; P:cellular response to oxidative stress; IBA:GO_Central.
DR   GO; GO:0042744; P:hydrogen peroxide catabolic process; IBA:GO_Central.
DR   GO; GO:0000302; P:response to reactive oxygen species; IBA:GO_Central.
DR   GO; GO:0009845; P:seed germination; IMP:TAIR.
DR   GO; GO:0010431; P:seed maturation; IMP:TAIR.
DR   InterPro; IPR044831; Ccp1-like.
DR   InterPro; IPR002016; Haem_peroxidase.
DR   InterPro; IPR010255; Haem_peroxidase_sf.
DR   InterPro; IPR002207; Peroxidase_I.
DR   InterPro; IPR019794; Peroxidases_AS.
DR   InterPro; IPR019793; Peroxidases_heam-ligand_BS.
DR   PANTHER; PTHR31356; PTHR31356; 1.
DR   Pfam; PF00141; peroxidase; 1.
DR   PRINTS; PR00459; ASPEROXIDASE.
DR   PRINTS; PR00458; PEROXIDASE.
DR   SUPFAM; SSF48113; SSF48113; 1.
DR   PROSITE; PS00435; PEROXIDASE_1; 1.
DR   PROSITE; PS00436; PEROXIDASE_2; 1.
DR   PROSITE; PS50873; PEROXIDASE_4; 1.
PE   2: Evidence at transcript level;
KW   Heme; Hydrogen peroxide; Iron; Metal-binding; Oxidoreductase; Peroxidase;
KW   Reference proteome.
FT   CHAIN           1..329
FT                   /note="Putative L-ascorbate peroxidase 6"
FT                   /id="PRO_0000261325"
FT   ACT_SITE        123
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00297,
FT                   ECO:0000255|PROSITE-ProRule:PRU10012"
FT   BINDING         244
FT                   /ligand="heme b"
FT                   /ligand_id="ChEBI:CHEBI:60344"
FT                   /ligand_part="Fe"
FT                   /ligand_part_id="ChEBI:CHEBI:18248"
FT                   /note="axial binding residue"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00297"
FT   SITE            119
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00297"
SQ   SEQUENCE   329 AA;  36240 MW;  BC50726AB7B689DD CRC64;
     MTTTTASLVK TFLFRCDSFS SFKFKCKFES PAKTRLLSPA TEKHVVRSSR AWRIRCLSDD
     PGSSHVFVAS RRKMVVLLST VQLLSHMLPQ NGNAAEIYPV MQNEIRKVVT KGKAAGVLRL
     VFHDAGTFEL DDHSGGINGS IAYELERPEN IGLKKSLKVL AKAKVKVDEI QPVSWADMIS
     VAGSEAVSIC GGPTIPVVLG RLDSAQPDPE GKLPPETLSA SGLKECFKRK GFSTQELVAL
     SGAHTIGSKG FGDPTVFDNA YYKILLEKPW TSTSKMTSMV GLPSDHALVQ DDECLRWVKR
     YAEDQDKFFE DFTNAYIKLV NSGAKWNML
 
 
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