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PCYA_SYNY3
ID   PCYA_SYNY3              Reviewed;         248 AA.
AC   Q55891;
DT   12-FEB-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1996, sequence version 1.
DT   03-AUG-2022, entry version 123.
DE   RecName: Full=Phycocyanobilin:ferredoxin oxidoreductase;
DE            EC=1.3.7.5;
GN   Name=pcyA; OrderedLocusNames=slr0116;
OS   Synechocystis sp. (strain PCC 6803 / Kazusa).
OC   Bacteria; Cyanobacteria; Synechococcales; Merismopediaceae; Synechocystis;
OC   unclassified Synechocystis.
OX   NCBI_TaxID=1111708;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 27184 / PCC 6803 / N-1;
RX   PubMed=8590279; DOI=10.1093/dnares/2.4.153;
RA   Kaneko T., Tanaka A., Sato S., Kotani H., Sazuka T., Miyajima N.,
RA   Sugiura M., Tabata S.;
RT   "Sequence analysis of the genome of the unicellular cyanobacterium
RT   Synechocystis sp. strain PCC6803. I. Sequence features in the 1 Mb region
RT   from map positions 64% to 92% of the genome.";
RL   DNA Res. 2:153-166(1995).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 6803 / Kazusa;
RX   PubMed=8905231; DOI=10.1093/dnares/3.3.109;
RA   Kaneko T., Sato S., Kotani H., Tanaka A., Asamizu E., Nakamura Y.,
RA   Miyajima N., Hirosawa M., Sugiura M., Sasamoto S., Kimura T., Hosouchi T.,
RA   Matsuno A., Muraki A., Nakazaki N., Naruo K., Okumura S., Shimpo S.,
RA   Takeuchi C., Wada T., Watanabe A., Yamada M., Yasuda M., Tabata S.;
RT   "Sequence analysis of the genome of the unicellular cyanobacterium
RT   Synechocystis sp. strain PCC6803. II. Sequence determination of the entire
RT   genome and assignment of potential protein-coding regions.";
RL   DNA Res. 3:109-136(1996).
CC   -!- FUNCTION: Catalyzes the four-electron reduction of biliverdin IX-alpha
CC       (2-electron reduction at both the A and D rings); the reaction proceeds
CC       via an isolatable 2-electron intermediate, 181,182-dihydrobiliverdin.
CC       {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(2R,3Z)-phycocyanobilin + 4 oxidized [2Fe-2S]-[ferredoxin] =
CC         biliverdin IXalpha + 4 H(+) + 4 reduced [2Fe-2S]-[ferredoxin];
CC         Xref=Rhea:RHEA:15309, Rhea:RHEA-COMP:10000, Rhea:RHEA-COMP:10001,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:33737, ChEBI:CHEBI:33738,
CC         ChEBI:CHEBI:57437, ChEBI:CHEBI:57991; EC=1.3.7.5;
CC   -!- SIMILARITY: Belongs to the HY2 family. {ECO:0000305}.
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DR   EMBL; BA000022; BAA10653.1; -; Genomic_DNA.
DR   PIR; S76709; S76709.
DR   PDB; 2D1E; X-ray; 1.51 A; A=1-248.
DR   PDB; 2DKE; X-ray; 2.50 A; A=1-248.
DR   PDB; 3AJG; X-ray; 1.90 A; A/B=1-248.
DR   PDB; 3AJH; X-ray; 2.25 A; A/B=1-248.
DR   PDB; 3F0L; X-ray; 1.30 A; A=1-248.
DR   PDB; 3F0M; X-ray; 1.50 A; A=1-248.
DR   PDB; 3I8U; X-ray; 1.48 A; X=1-248.
DR   PDB; 3I94; X-ray; 1.04 A; A=1-248.
DR   PDB; 3I95; X-ray; 1.40 A; A=1-248.
DR   PDB; 3NB8; X-ray; 1.30 A; A=1-248.
DR   PDB; 3NB9; X-ray; 1.50 A; A=1-248.
DR   PDB; 4EOC; X-ray; 1.49 A; A=8-246.
DR   PDB; 4EOD; X-ray; 1.30 A; A=1-248.
DR   PDB; 4EOE; X-ray; 1.20 A; A=1-248.
DR   PDB; 4QCD; Other; 1.93 A; A=1-248.
DR   PDB; 5B4H; X-ray; 1.11 A; A=1-248.
DR   PDB; 5B4I; X-ray; 1.11 A; A=1-248.
DR   PDB; 5B4J; X-ray; 1.05 A; A=1-248.
DR   PDBsum; 2D1E; -.
DR   PDBsum; 2DKE; -.
DR   PDBsum; 3AJG; -.
DR   PDBsum; 3AJH; -.
DR   PDBsum; 3F0L; -.
DR   PDBsum; 3F0M; -.
DR   PDBsum; 3I8U; -.
DR   PDBsum; 3I94; -.
DR   PDBsum; 3I95; -.
DR   PDBsum; 3NB8; -.
DR   PDBsum; 3NB9; -.
DR   PDBsum; 4EOC; -.
DR   PDBsum; 4EOD; -.
DR   PDBsum; 4EOE; -.
DR   PDBsum; 4QCD; -.
DR   PDBsum; 5B4H; -.
DR   PDBsum; 5B4I; -.
DR   PDBsum; 5B4J; -.
DR   AlphaFoldDB; Q55891; -.
DR   SMR; Q55891; -.
DR   IntAct; Q55891; 1.
DR   STRING; 1148.1208485; -.
DR   PaxDb; Q55891; -.
DR   EnsemblBacteria; BAA10653; BAA10653; BAA10653.
DR   KEGG; syn:slr0116; -.
DR   eggNOG; ENOG502Z7RN; Bacteria.
DR   InParanoid; Q55891; -.
DR   OMA; YQTPQFR; -.
DR   PhylomeDB; Q55891; -.
DR   BioCyc; MetaCyc:MON-13954; -.
DR   BRENDA; 1.3.7.5; 382.
DR   EvolutionaryTrace; Q55891; -.
DR   Proteomes; UP000001425; Chromosome.
DR   GO; GO:0050897; F:cobalt ion binding; IEA:InterPro.
DR   GO; GO:0050620; F:phycocyanobilin:ferredoxin oxidoreductase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0010024; P:phytochromobilin biosynthetic process; IEA:InterPro.
DR   HAMAP; MF_00618; Ferredoxin_bilin_red; 1.
DR   InterPro; IPR009249; Ferredoxin-dep_bilin_Rdtase.
DR   InterPro; IPR022870; Ferredoxin_bilin_OxRdtase.
DR   PANTHER; PTHR34557; PTHR34557; 1.
DR   Pfam; PF05996; Fe_bilin_red; 1.
PE   1: Evidence at protein level;
KW   3D-structure; Oxidoreductase; Reference proteome.
FT   CHAIN           1..248
FT                   /note="Phycocyanobilin:ferredoxin oxidoreductase"
FT                   /id="PRO_0000216747"
FT   HELIX           8..10
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   HELIX           14..16
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   HELIX           19..32
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   HELIX           43..45
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   STRAND          49..51
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   STRAND          53..55
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   STRAND          58..66
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   STRAND          68..80
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   TURN            81..83
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   STRAND          84..93
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   HELIX           95..97
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   STRAND          101..109
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   STRAND          112..121
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   STRAND          124..126
FT                   /evidence="ECO:0007829|PDB:3AJH"
FT   HELIX           131..139
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   STRAND          146..148
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   HELIX           153..157
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   STRAND          163..165
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   HELIX           170..193
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   HELIX           199..216
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   HELIX           220..230
FT                   /evidence="ECO:0007829|PDB:3I94"
FT   HELIX           232..241
FT                   /evidence="ECO:0007829|PDB:3I94"
SQ   SEQUENCE   248 AA;  28129 MW;  BEB10CEBCE5E515B CRC64;
     MAVTDLSLTN SSLMPTLNPM IQQLALAIAA SWQSLPLKPY QLPEDLGYVE GRLEGEKLVI
     ENRCYQTPQF RKMHLELAKV GKGLDILHCV MFPEPLYGLP LFGCDIVAGP GGVSAAIADL
     SPTQSDRQLP AAYQKSLAEL GQPEFEQQRE LPPWGEIFSE YCLFIRPSNV TEEERFVQRV
     VDFLQIHCHQ SIVAEPLSEA QTLEHRQGQI HYCQQQQKND KTRRVLEKAF GEAWAERYMS
     QVLFDVIQ
 
 
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