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PPO1_IPOBA
ID   PPO1_IPOBA              Reviewed;         496 AA.
AC   Q9ZP19; Q84V53;
DT   29-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1999, sequence version 1.
DT   03-AUG-2022, entry version 84.
DE   RecName: Full=Polyphenol oxidase I, chloroplastic;
DE            Short=PPO-I;
DE            EC=1.10.3.1;
DE   AltName: Full=Catechol oxidase I;
GN   Name=co-1;
OS   Ipomoea batatas (Sweet potato) (Convolvulus batatas).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   asterids; lamiids; Solanales; Convolvulaceae; Ipomoeeae; Ipomoea.
OX   NCBI_TaxID=4120;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   TISSUE=Root;
RA   Gerdemann C., Eicken C., Meyer H., Spener F., Krebs B.;
RT   "Cloning and characterization of cDNA coding for Ipomoea batatas catechol
RT   oxidase.";
RL   Submitted (MAY-1998) to the EMBL/GenBank/DDBJ databases.
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=cv. Bushbuck;
RA   Greving J., Gerdemann C., Spener F., Krebs B.;
RT   "Sequencing and cloning of genomic DNA encoding two isozymes of Ipomoea
RT   batatas catechol oxidase.";
RL   Submitted (APR-2001) to the EMBL/GenBank/DDBJ databases.
RN   [3]
RP   X-RAY CRYSTALLOGRAPHY (2.5 ANGSTROMS) OF 1-345 IN COMPLEX WITH COPPER AND
RP   N-PHENYLTHIOUREA, DISULFIDE BONDS, AND COFACTOR.
RX   PubMed=9846879; DOI=10.1038/4193;
RA   Klabunde T., Eicken C., Sacchettini J.C., Krebs B.;
RT   "Crystal structure of a plant catechol oxidase containing a dicopper
RT   center.";
RL   Nat. Struct. Biol. 5:1084-1090(1998).
CC   -!- FUNCTION: Catalyzes the oxidation of mono- and o-diphenols to o-
CC       diquinones.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2 catechol + O2 = 2 1,2-benzoquinone + 2 H2O;
CC         Xref=Rhea:RHEA:21632, ChEBI:CHEBI:15377, ChEBI:CHEBI:15379,
CC         ChEBI:CHEBI:17253, ChEBI:CHEBI:18135; EC=1.10.3.1;
CC   -!- COFACTOR:
CC       Name=Cu(2+); Xref=ChEBI:CHEBI:29036;
CC         Evidence={ECO:0000269|PubMed:9846879};
CC       Note=Binds 2 copper ions per subunit. {ECO:0000269|PubMed:9846879};
CC   -!- ACTIVITY REGULATION: Inhibited by phenylthiourea.
CC   -!- SUBUNIT: Monomer. {ECO:0000269|PubMed:9846879}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid lumen
CC       {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the tyrosinase family. {ECO:0000305}.
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DR   EMBL; AJ006097; CAA06855.1; -; mRNA.
DR   EMBL; AJ309175; CAC83609.1; -; Genomic_DNA.
DR   PDB; 1BT1; X-ray; 2.70 A; A/B=1-345.
DR   PDB; 1BT2; X-ray; 2.70 A; A/B=1-345.
DR   PDB; 1BT3; X-ray; 2.50 A; A=1-345.
DR   PDB; 1BUG; X-ray; 2.70 A; A/B=1-345.
DR   PDBsum; 1BT1; -.
DR   PDBsum; 1BT2; -.
DR   PDBsum; 1BT3; -.
DR   PDBsum; 1BUG; -.
DR   AlphaFoldDB; Q9ZP19; -.
DR   SMR; Q9ZP19; -.
DR   BRENDA; 1.10.3.1; 2773.
DR   EvolutionaryTrace; Q9ZP19; -.
DR   GO; GO:0009543; C:chloroplast thylakoid lumen; IEA:UniProtKB-SubCell.
DR   GO; GO:0004097; F:catechol oxidase activity; IEA:UniProtKB-EC.
DR   GO; GO:0005507; F:copper ion binding; IDA:UniProtKB.
DR   Gene3D; 1.10.1280.10; -; 1.
DR   InterPro; IPR008922; Di-copper_centre_dom_sf.
DR   InterPro; IPR022740; Polyphenol_oxidase_C.
DR   InterPro; IPR022739; Polyphenol_oxidase_cen.
DR   InterPro; IPR002227; Tyrosinase_Cu-bd.
DR   Pfam; PF12142; PPO1_DWL; 1.
DR   Pfam; PF12143; PPO1_KFDV; 1.
DR   Pfam; PF00264; Tyrosinase; 1.
DR   PRINTS; PR00092; TYROSINASE.
DR   SUPFAM; SSF48056; SSF48056; 1.
DR   PROSITE; PS00497; TYROSINASE_1; 1.
PE   1: Evidence at protein level;
KW   3D-structure; Chloroplast; Copper; Disulfide bond; Metal-binding;
KW   Oxidoreductase; Plastid; Thioether bond; Thylakoid.
FT   CHAIN           1..496
FT                   /note="Polyphenol oxidase I, chloroplastic"
FT                   /id="PRO_0000186741"
FT   BINDING         88
FT                   /ligand="Cu cation"
FT                   /ligand_id="ChEBI:CHEBI:23378"
FT                   /ligand_label="A"
FT                   /evidence="ECO:0000269|PubMed:9846879"
FT   BINDING         109
FT                   /ligand="Cu cation"
FT                   /ligand_id="ChEBI:CHEBI:23378"
FT                   /ligand_label="A"
FT                   /evidence="ECO:0000269|PubMed:9846879"
FT   BINDING         118
FT                   /ligand="Cu cation"
FT                   /ligand_id="ChEBI:CHEBI:23378"
FT                   /ligand_label="A"
FT                   /evidence="ECO:0000269|PubMed:9846879"
FT   BINDING         240
FT                   /ligand="Cu cation"
FT                   /ligand_id="ChEBI:CHEBI:23378"
FT                   /ligand_label="B"
FT                   /evidence="ECO:0000269|PubMed:9846879"
FT   BINDING         244
FT                   /ligand="Cu cation"
FT                   /ligand_id="ChEBI:CHEBI:23378"
FT                   /ligand_label="B"
FT                   /evidence="ECO:0000269|PubMed:9846879"
FT   BINDING         274
FT                   /ligand="Cu cation"
FT                   /ligand_id="ChEBI:CHEBI:23378"
FT                   /ligand_label="B"
FT                   /evidence="ECO:0000269|PubMed:9846879"
FT   DISULFID        11..28
FT                   /evidence="ECO:0000269|PubMed:9846879"
FT   DISULFID        27..89
FT                   /evidence="ECO:0000269|PubMed:9846879"
FT   CROSSLNK        92..109
FT                   /note="2'-(S-cysteinyl)-histidine (Cys-His)"
FT                   /evidence="ECO:0000269|PubMed:9846879"
FT   CONFLICT        40..42
FT                   /note="LPA -> IPV (in Ref. 2; CAC83609)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        65
FT                   /note="K -> R (in Ref. 2; CAC83609)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        68
FT                   /note="E -> D (in Ref. 2; CAC83609)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        71
FT                   /note="K -> R (in Ref. 2; CAC83609)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        75
FT                   /note="A -> G (in Ref. 2; CAC83609)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        282
FT                   /note="T -> A (in Ref. 2; CAC83609)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        401..403
FT                   /note="VGI -> EGV (in Ref. 2; CAC83609)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        436
FT                   /note="F -> S (in Ref. 2; CAC83609)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        475
FT                   /note="T -> A (in Ref. 2; CAC83609)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        490
FT                   /note="V -> I (in Ref. 2; CAC83609)"
FT                   /evidence="ECO:0000305"
FT   HELIX           8..10
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   STRAND          33..37
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   STRAND          47..49
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   HELIX           52..54
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   HELIX           57..71
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   HELIX           81..92
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   STRAND          96..98
FT                   /evidence="ECO:0007829|PDB:1BT2"
FT   STRAND          101..105
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   STRAND          109..111
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   HELIX           114..133
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   HELIX           148..150
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   HELIX           155..158
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   STRAND          167..169
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   HELIX           171..173
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   HELIX           192..207
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   TURN            208..210
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   HELIX           214..218
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   HELIX           234..237
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   HELIX           240..247
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   TURN            256..259
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   TURN            261..263
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   HELIX           264..266
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   HELIX           269..287
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   HELIX           299..302
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   STRAND          305..309
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   STRAND          315..319
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   HELIX           320..322
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   HELIX           326..329
FT                   /evidence="ECO:0007829|PDB:1BT3"
FT   STRAND          331..333
FT                   /evidence="ECO:0007829|PDB:1BT3"
SQ   SEQUENCE   496 AA;  55011 MW;  806717DBF5B09705 CRC64;
     APIQAPEISK CVVPPADLPP GAVVDNCCPP VASNIVDYKL PAVTTMKVRP AAHTMDKDAI
     AKFAKAVELM KALPADDPRN FYQQALVHCA YCNGGYDQVN FPDQEIQVHN SWLFFPFHRW
     YLYFYERILG KLIGDPSFGL PFWNWDNPGG MVLPDFLNDS TSSLYDSNRN QSHLPPVVVD
     LGYNGADTDV TDQQRITDNL ALMYKQMVTN AGTAELFLGK AYRAGDAPSP GAGSIETSPH
     IPIHRWVGDP RNTNNEDMGN FYSAGRDIAF YCHHSNVDRM WTIWQQLAGK PRKRDYTDSD
     WLNATFLFYD ENGQAVKVRI GDSLDNQKMG YKYAKTPLPW LDSKPVPTKK KGGYASKSKA
     PFVASVFPVT LDKVVQVKVA RPKKSRSAEE KEAEEEILLI VGIEVEIDKY AKFDVYLNDS
     DDPSGGKDKA EYAGSFAHLP HKHKGMKKIR TTLSLGLNEP LEDLGAEDDD TILVTLAPKV
     GGGVVSVDNV KVVYGS
 
 
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