PSBE_CUSGR
ID PSBE_CUSGR Reviewed; 84 AA.
AC Q8MAV7; A7M914;
DT 30-MAY-2003, integrated into UniProtKB/Swiss-Prot.
DT 23-OCT-2007, sequence version 4.
DT 03-AUG-2022, entry version 92.
DE RecName: Full=Cytochrome b559 subunit alpha {ECO:0000255|HAMAP-Rule:MF_00642};
DE AltName: Full=PSII reaction center subunit V {ECO:0000255|HAMAP-Rule:MF_00642};
GN Name=psbE {ECO:0000255|HAMAP-Rule:MF_00642};
OS Cuscuta gronovii (Common dodder) (Epithymum gronovii).
OG Plastid.
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC asterids; lamiids; Solanales; Convolvulaceae; Cuscuteae; Cuscuta;
OC Cuscuta subgen. Grammica; Cuscuta sect. Oxycarpae.
OX NCBI_TaxID=35886;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX AGRICOLA=IND23320510;
RA Stefanovic S., Krueger L., Olmstead R.G.;
RT "Monophyly of the Convolvulaceae and circumscription of their major
RT lineages based on DNA sequences of multiple chloroplast loci.";
RL Am. J. Bot. 89:1510-1522(2002).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA], AND LACK OF RNA EDITING.
RX PubMed=17714582; DOI=10.1186/1471-2229-7-45;
RA Funk H.T., Berg S., Krupinska K., Maier U.-G., Krause K.;
RT "Complete DNA sequences of the plastid genomes of two parasitic flowering
RT plant species, Cuscuta reflexa and Cuscuta gronovii.";
RL BMC Plant Biol. 7:45-45(2007).
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:0000255|HAMAP-Rule:MF_00642}.
CC -!- COFACTOR:
CC Name=heme b; Xref=ChEBI:CHEBI:60344;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00642};
CC Note=With its partner (PsbF) binds heme. PSII binds additional
CC chlorophylls, carotenoids and specific lipids. {ECO:0000255|HAMAP-
CC Rule:MF_00642};
CC -!- SUBUNIT: Heterodimer of an alpha subunit and a beta subunit. PSII is
CC composed of 1 copy each of membrane proteins PsbA, PsbB, PsbC, PsbD,
CC PsbE, PsbF, PsbH, PsbI, PsbJ, PsbK, PsbL, PsbM, PsbT, PsbX, PsbY, PsbZ,
CC Ycf12, at least 3 peripheral proteins of the oxygen-evolving complex
CC and a large number of cofactors. It forms dimeric complexes.
CC {ECO:0000255|HAMAP-Rule:MF_00642}.
CC -!- SUBCELLULAR LOCATION: Plastid membrane {ECO:0000255|HAMAP-
CC Rule:MF_00642}; Single-pass membrane protein {ECO:0000255|HAMAP-
CC Rule:MF_00642}.
CC -!- SIMILARITY: Belongs to the PsbE/PsbF family. {ECO:0000255|HAMAP-
CC Rule:MF_00642}.
CC -!- CAUTION: Young tissue from this organism is photosynthetic and contains
CC some thylakoids, although the photosynthetic activity does not exceed
CC the light compensation point. {ECO:0000305}.
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DR EMBL; AY100954; AAM53426.1; -; Genomic_DNA.
DR EMBL; AM711639; CAM98342.1; -; Genomic_DNA.
DR RefSeq; YP_001430056.1; NC_009765.1.
DR AlphaFoldDB; Q8MAV7; -.
DR SMR; Q8MAV7; -.
DR GeneID; 5536779; -.
DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR GO; GO:0009539; C:photosystem II reaction center; IEA:InterPro.
DR GO; GO:0042170; C:plastid membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0042651; C:thylakoid membrane; IEA:UniProtKB-UniRule.
DR GO; GO:0009055; F:electron transfer activity; IEA:UniProtKB-UniRule.
DR GO; GO:0020037; F:heme binding; IEA:InterPro.
DR GO; GO:0005506; F:iron ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0009767; P:photosynthetic electron transport chain; IEA:InterPro.
DR Gene3D; 1.20.5.860; -; 1.
DR HAMAP; MF_00642; PSII_PsbE; 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 Pfam; PF00283; Cytochrom_B559; 1.
DR Pfam; PF00284; Cytochrom_B559a; 1.
DR PIRSF; PIRSF000036; PsbE; 1.
DR TIGRFAMs; TIGR01332; cyt_b559_alpha; 1.
DR PROSITE; PS00537; CYTOCHROME_B559; 1.
PE 2: Evidence at transcript level;
KW Electron transport; Heme; Iron; Membrane; Metal-binding; Photosynthesis;
KW Photosystem II; Plastid; Transmembrane; Transmembrane helix; Transport.
FT CHAIN 1..84
FT /note="Cytochrome b559 subunit alpha"
FT /id="PRO_0000200305"
FT TRANSMEM 21..35
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00642"
FT BINDING 23
FT /ligand="heme"
FT /ligand_id="ChEBI:CHEBI:30413"
FT /ligand_note="ligand shared with beta subunit"
FT /ligand_part="Fe"
FT /ligand_part_id="ChEBI:CHEBI:18248"
FT /note="axial binding residue"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00642"
FT CONFLICT 4
FT /note="N -> S (in Ref. 1; AAM53426)"
FT /evidence="ECO:0000305"
SQ SEQUENCE 84 AA; 9589 MW; 5FA6DEC947EECFC3 CRC64;
MSGNTGERSF ADIITSIRYW VIHSITIPSL FIAGWLFVST GLAYDVFGSP RPNEYFTENQ
QGIPLITGRF EPLEEQNEFS RRSQ
