ID Q8HRZ1_HYDCA Unreviewed; 75 AA.
AC Q8HRZ1;
DT 01-MAR-2003, integrated into UniProtKB/TrEMBL.
DT 01-MAR-2003, sequence version 1.
DT 13-SEP-2023, entry version 76.
DE RecName: Full=Cytochrome b559 subunit alpha {ECO:0000256|RuleBase:RU000619};
DE AltName: Full=PSII reaction center subunit V {ECO:0000256|RuleBase:RU004529};
DE Flags: Fragment;
GN Name=psbE {ECO:0000313|EMBL:AAG26998.1};
OS Hydrastis canadensis (Goldenseal).
OG Plastid; Chloroplast {ECO:0000313|EMBL:AAG26998.1}.
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; Ranunculales; Ranunculaceae; Hydrastidoideae;
OC Hydrastis.
OX NCBI_TaxID=13569 {ECO:0000313|EMBL:AAG26998.1};
RN [1] {ECO:0000313|EMBL:AAG26998.1}
RP NUCLEOTIDE SEQUENCE.
RX PubMed=13678689; DOI=10.1016/S1055-7903(03)00131-3;
RA Rai H.S., O'Brien H.E., Reeves P.A., Olmstead R.G., Graham S.W.;
RT "Inference of higher-order relationships in the cycads from a large
RT chloroplast data set.";
RL Mol. Phylogenet. Evol. 29:350-359(2003).
CC -!- FUNCTION: This b-type cytochrome is tightly associated with the
CC reaction center of photosystem II (PSII). PSII is a light-driven
CC water:plastoquinone oxidoreductase that uses light energy to abstract
CC electrons from H(2)O, generating O(2) and a proton gradient
CC subsequently used for ATP formation. It consists of a core antenna
CC complex that captures photons, and an electron transfer chain that
CC converts photonic excitation into a charge separation.
CC {ECO:0000256|RuleBase:RU004529}.
CC -!- SUBUNIT: Heterodimer of an alpha subunit and a beta subunit.
CC {ECO:0000256|RuleBase:RU004529}.
CC -!- SUBCELLULAR LOCATION: Membrane {ECO:0000256|ARBA:ARBA00004167}; Single-
CC pass membrane protein {ECO:0000256|ARBA:ARBA00004167}. Plastid,
CC chloroplast thylakoid membrane {ECO:0000256|RuleBase:RU004529}; Single-
CC pass membrane protein {ECO:0000256|RuleBase:RU004529}.
CC -!- SIMILARITY: Belongs to the PsbE/PsbF family.
CC {ECO:0000256|RuleBase:RU004529}.
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DR EMBL; AY007479; AAG26998.1; -; Genomic_DNA.
DR AlphaFoldDB; Q8HRZ1; -.
DR GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0009539; C:photosystem II reaction center; IEA:InterPro.
DR GO; GO:0020037; F:heme binding; IEA:InterPro.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0009767; P:photosynthetic electron transport chain; IEA:InterPro.
DR Gene3D; 1.20.5.860; Photosystem II cytochrome b559, alpha subunit; 1.
DR InterPro; IPR006217; PSII_cyt_b559_asu.
DR InterPro; IPR037025; PSII_cyt_b559_asu_sf.
DR InterPro; IPR006216; PSII_cyt_b559_CS.
DR InterPro; IPR013081; PSII_cyt_b559_N.
DR InterPro; IPR013082; PSII_cytb559_asu_lum.
DR NCBIfam; TIGR01332; cyt_b559_alpha; 1.
DR PANTHER; PTHR33391; CYTOCHROME B559 SUBUNIT BETA-RELATED; 1.
DR PANTHER; PTHR33391:SF9; CYTOCHROME B559 SUBUNIT BETA-RELATED; 1.
DR Pfam; PF00283; Cytochrom_B559; 1.
DR Pfam; PF00284; Cytochrom_B559a; 1.
DR PIRSF; PIRSF000036; PsbE; 1.
DR SUPFAM; SSF161045; Cytochrome b559 subunits; 1.
DR PROSITE; PS00537; CYTOCHROME_B559; 1.
PE 3: Inferred from homology;
KW Chloroplast {ECO:0000256|RuleBase:RU004529, ECO:0000313|EMBL:AAG26998.1};
KW Electron transport {ECO:0000256|ARBA:ARBA00022982,
KW ECO:0000256|RuleBase:RU004529};
KW Heme {ECO:0000256|ARBA:ARBA00022617, ECO:0000256|RuleBase:RU004529};
KW Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|RuleBase:RU004529};
KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|RuleBase:RU004529};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723,
KW ECO:0000256|RuleBase:RU004529};
KW Photosynthesis {ECO:0000256|ARBA:ARBA00022531,
KW ECO:0000256|RuleBase:RU004529};
KW Photosystem II {ECO:0000256|ARBA:ARBA00023276,
KW ECO:0000256|RuleBase:RU004529};
KW Plastid {ECO:0000256|RuleBase:RU004529, ECO:0000313|EMBL:AAG26998.1};
KW Transmembrane {ECO:0000256|ARBA:ARBA00022692,
KW ECO:0000256|RuleBase:RU004529};
KW Transmembrane helix {ECO:0000256|ARBA:ARBA00022989,
KW ECO:0000256|RuleBase:RU004529};
KW Transport {ECO:0000256|ARBA:ARBA00022448, ECO:0000256|RuleBase:RU004529}.
FT TRANSMEM 12..36
FT /note="Helical"
FT /evidence="ECO:0000256|RuleBase:RU004529"
FT DOMAIN 2..26
FT /note="Photosystem II cytochrome b559 N-terminal"
FT /evidence="ECO:0000259|Pfam:PF00283"
FT DOMAIN 34..71
FT /note="Photosystem II cytochrome b559 alpha subunit lumenal
FT region"
FT /evidence="ECO:0000259|Pfam:PF00284"
FT NON_TER 1
FT /evidence="ECO:0000313|EMBL:AAG26998.1"
SQ SEQUENCE 75 AA; 8523 MW; B28FB74FC30E1EDE CRC64;
SFADIITSIR YWVIHSITIP SLFIAGWLFV STGLAYDVFG SPRPNEYFTE SRQGIPLITG
RFDSLAQLDE FSRSF
//
