ID A0A251U3N3_HELAN Unreviewed; 363 AA.
AC A0A251U3N3;
DT 22-NOV-2017, integrated into UniProtKB/TrEMBL.
DT 22-NOV-2017, sequence version 1.
DT 27-MAR-2024, entry version 28.
DE RecName: Full=Peroxidase {ECO:0000256|ARBA:ARBA00012313, ECO:0000256|RuleBase:RU362060};
DE EC=1.11.1.7 {ECO:0000256|ARBA:ARBA00012313, ECO:0000256|RuleBase:RU362060};
GN ORFNames=HannXRQ_Chr08g0214771 {ECO:0000313|EMBL:OTG17679.1},
GN HanXRQr2_Chr08g0325271 {ECO:0000313|EMBL:KAF5794183.1};
OS Helianthus annuus (Common sunflower).
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC asterids; campanulids; Asterales; Asteraceae; Asteroideae;
OC Heliantheae alliance; Heliantheae; Helianthus.
OX NCBI_TaxID=4232 {ECO:0000313|EMBL:OTG17679.1, ECO:0000313|Proteomes:UP000215914};
RN [1] {ECO:0000313|EMBL:KAF5794183.1, ECO:0000313|Proteomes:UP000215914}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=cv. SF193 {ECO:0000313|Proteomes:UP000215914};
RC TISSUE=Leaves {ECO:0000313|EMBL:KAF5794183.1};
RX PubMed=28538728; DOI=10.1038/nature22380;
RA Badouin H., Gouzy J., Grassa C.J., Murat F., Staton S.E., Cottret L.,
RA Lelandais-Briere C., Owens G.L., Carrere S., Mayjonade B., Legrand L.,
RA Gill N., Kane N.C., Bowers J.E., Hubner S., Bellec A., Berard A.,
RA Berges H., Blanchet N., Boniface M.C., Brunel D., Catrice O., Chaidir N.,
RA Claudel C., Donnadieu C., Faraut T., Fievet G., Helmstetter N., King M.,
RA Knapp S.J., Lai Z., Le Paslier M.C., Lippi Y., Lorenzon L., Mandel J.R.,
RA Marage G., Marchand G., Marquand E., Bret-Mestries E., Morien E.,
RA Nambeesan S., Nguyen T., Pegot-Espagnet P., Pouilly N., Raftis F.,
RA Sallet E., Schiex T., Thomas J., Vandecasteele C., Vares D., Vear F.,
RA Vautrin S., Crespi M., Mangin B., Burke J.M., Salse J., Munos S.,
RA Vincourt P., Rieseberg L.H., Langlade N.B.;
RT "The sunflower genome provides insights into oil metabolism, flowering and
RT Asterid evolution.";
RL Nature 546:148-152(2017).
RN [2] {ECO:0000313|EMBL:OTG17679.1}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC TISSUE=Leaves {ECO:0000313|EMBL:OTG17679.1};
RA Langlade N., Munos S.;
RT "Sunflower complete genome.";
RL Submitted (FEB-2017) to the EMBL/GenBank/DDBJ databases.
RN [3] {ECO:0000313|EMBL:KAF5794183.1}
RP NUCLEOTIDE SEQUENCE.
RC TISSUE=Leaves {ECO:0000313|EMBL:KAF5794183.1};
RA Gouzy J., Langlade N., Munos S.;
RT "Helianthus annuus Genome sequencing and assembly Release 2.";
RL Submitted (JUN-2020) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Removal of H(2)O(2), oxidation of toxic reductants,
CC biosynthesis and degradation of lignin, suberization, auxin catabolism,
CC response to environmental stresses such as wounding, pathogen attack
CC and oxidative stress. {ECO:0000256|RuleBase:RU362060}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=2 a phenolic donor + H2O2 = 2 a phenolic radical donor + 2
CC H2O; Xref=Rhea:RHEA:56136, ChEBI:CHEBI:15377, ChEBI:CHEBI:16240,
CC ChEBI:CHEBI:139520, ChEBI:CHEBI:139521; EC=1.11.1.7;
CC Evidence={ECO:0000256|ARBA:ARBA00000189,
CC ECO:0000256|RuleBase:RU362060};
CC -!- COFACTOR:
CC Name=Ca(2+); Xref=ChEBI:CHEBI:29108;
CC Evidence={ECO:0000256|PIRSR:PIRSR600823-3,
CC ECO:0000256|RuleBase:RU362060};
CC Note=Binds 2 calcium ions per subunit. {ECO:0000256|PIRSR:PIRSR600823-
CC 3, ECO:0000256|RuleBase:RU362060};
CC -!- COFACTOR:
CC Name=heme b; Xref=ChEBI:CHEBI:60344;
CC Evidence={ECO:0000256|PIRSR:PIRSR600823-3,
CC ECO:0000256|RuleBase:RU362060};
CC Note=Binds 1 heme b (iron(II)-protoporphyrin IX) group per subunit.
CC {ECO:0000256|PIRSR:PIRSR600823-3, ECO:0000256|RuleBase:RU362060};
CC -!- SUBCELLULAR LOCATION: Secreted {ECO:0000256|RuleBase:RU362060}.
CC -!- SIMILARITY: Belongs to the peroxidase family. Ascorbate peroxidase
CC subfamily. {ECO:0000256|ARBA:ARBA00006873}.
CC -!- SIMILARITY: Belongs to the peroxidase family. Classical plant (class
CC III) peroxidase subfamily. {ECO:0000256|RuleBase:RU362060}.
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DR EMBL; MNCJ02000323; KAF5794183.1; -; Genomic_DNA.
DR EMBL; CM007897; OTG17679.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A251U3N3; -.
DR STRING; 4232.A0A251U3N3; -.
DR EnsemblPlants; mRNA:HanXRQr2_Chr08g0325271; mRNA:HanXRQr2_Chr08g0325271; HanXRQr2_Chr08g0325271.
DR Gramene; mRNA:HanXRQr2_Chr08g0325271; mRNA:HanXRQr2_Chr08g0325271; HanXRQr2_Chr08g0325271.
DR InParanoid; A0A251U3N3; -.
DR OMA; VKMGNII; -.
DR Proteomes; UP000215914; Chromosome 8.
DR GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR GO; GO:0020037; F:heme binding; IEA:UniProtKB-UniRule.
DR GO; GO:0140825; F:lactoperoxidase activity; IEA:UniProtKB-EC.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0042744; P:hydrogen peroxide catabolic process; IEA:UniProtKB-KW.
DR GO; GO:0006979; P:response to oxidative stress; IEA:UniProtKB-UniRule.
DR CDD; cd00693; secretory_peroxidase; 1.
DR Gene3D; 1.10.520.10; -; 1.
DR Gene3D; 1.10.420.10; Peroxidase, domain 2; 1.
DR InterPro; IPR002016; Haem_peroxidase.
DR InterPro; IPR010255; Haem_peroxidase_sf.
DR InterPro; IPR000823; Peroxidase_pln.
DR InterPro; IPR019794; Peroxidases_AS.
DR InterPro; IPR019793; Peroxidases_heam-ligand_BS.
DR InterPro; IPR033905; Secretory_peroxidase.
DR PANTHER; PTHR31388:SF9; PEROXIDASE 11; 1.
DR PANTHER; PTHR31388; PEROXIDASE 72-RELATED; 1.
DR Pfam; PF00141; peroxidase; 1.
DR PRINTS; PR00458; PEROXIDASE.
DR PRINTS; PR00461; PLPEROXIDASE.
DR SUPFAM; SSF48113; Heme-dependent peroxidases; 1.
DR PROSITE; PS00435; PEROXIDASE_1; 1.
DR PROSITE; PS00436; PEROXIDASE_2; 1.
DR PROSITE; PS50873; PEROXIDASE_4; 1.
PE 3: Inferred from homology;
KW Calcium {ECO:0000256|PIRSR:PIRSR600823-3, ECO:0000256|RuleBase:RU362060};
KW Disulfide bond {ECO:0000256|ARBA:ARBA00023157,
KW ECO:0000256|PIRSR:PIRSR600823-5};
KW Heme {ECO:0000256|ARBA:ARBA00022617, ECO:0000256|RuleBase:RU362060};
KW Hydrogen peroxide {ECO:0000256|RuleBase:RU362060};
KW Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|PIRSR:PIRSR600823-3};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723,
KW ECO:0000256|PIRSR:PIRSR600823-3};
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002,
KW ECO:0000256|RuleBase:RU362060};
KW Peroxidase {ECO:0000256|ARBA:ARBA00022559, ECO:0000256|RuleBase:RU362060};
KW Reference proteome {ECO:0000313|Proteomes:UP000215914};
KW Secreted {ECO:0000256|ARBA:ARBA00022525, ECO:0000256|RuleBase:RU362060}.
FT DOMAIN 57..362
FT /note="Plant heme peroxidase family profile"
FT /evidence="ECO:0000259|PROSITE:PS50873"
FT ACT_SITE 98
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|PIRSR:PIRSR600823-1"
FT BINDING 99
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000256|PIRSR:PIRSR600823-3"
FT BINDING 102
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000256|PIRSR:PIRSR600823-3"
FT BINDING 104
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000256|PIRSR:PIRSR600823-3"
FT BINDING 106
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000256|PIRSR:PIRSR600823-3"
FT BINDING 108
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000256|PIRSR:PIRSR600823-3"
FT BINDING 120
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000256|PIRSR:PIRSR600823-3"
FT BINDING 195
FT /ligand="substrate"
FT /evidence="ECO:0000256|PIRSR:PIRSR600823-2"
FT BINDING 225
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:0000256|PIRSR:PIRSR600823-3"
FT BINDING 226
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000256|PIRSR:PIRSR600823-3"
FT BINDING 278
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000256|PIRSR:PIRSR600823-3"
FT BINDING 286
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000256|PIRSR:PIRSR600823-3"
FT SITE 94
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000256|PIRSR:PIRSR600823-4"
FT DISULFID 67..147
FT /evidence="ECO:0000256|PIRSR:PIRSR600823-5"
FT DISULFID 100..105
FT /evidence="ECO:0000256|PIRSR:PIRSR600823-5"
FT DISULFID 153..358
FT /evidence="ECO:0000256|PIRSR:PIRSR600823-5"
FT DISULFID 232..264
FT /evidence="ECO:0000256|PIRSR:PIRSR600823-5"
SQ SEQUENCE 363 AA; 40183 MW; 086DF83040513D7C CRC64;
MQISLLIQPQ SQPFPLSTTQ ETQTNIITMK IKPTIFILSF LTIFCFKFLH ATKTNPPLSL
DYYKSSCPNA EAIVRKEMEC AVQSDLRNAA LILRLHFHDC FVQGCDGSVL LDDTVTLQGE
KNAPTNLNAL KGFEFIDRIK EKLESECPGI VSCADLLTYA ARDATVLVGG PYWDVPAGRK
DSKTASFSLV ESNIPRPNDG LLSIISKFLY QSLSVTDMVA LSGAHTIGMA RCTNYRARIY
GDYQTTATMS NIAEPNLKNL KATCPAAGGG DNNEAAMDYV SPSLFDNTYY HILLRGEGLL
NSDQELYSSV LGVQTSKLVR KYAEDQIAFF AQFSESMVKM GNITNPETYV DGEVRKNCRF
MNT
//
