ID   CYB6_CHAGL     STANDARD;      PRT;   215 AA.
AC   Q8M9Z4;
DT   10-OCT-2003 (Rel. 42, Created)
DT   10-OCT-2003 (Rel. 42, Last sequence update)
DT   15-MAR-2004 (Rel. 43, Last annotation update)
DE   Cytochrome b6.
GN   PETB.
OS   Chaetosphaeridium globosum.
OG   Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Coleochaetales;
OC   Chaetosphaeridiaceae; Chaetosphaeridium.
OX   NCBI_TaxID=96477;
RN   [1]
RP   SEQUENCE FROM N.A.
RC   STRAIN=M1311;
RX   MEDLINE=22177139; PubMed=12161560;
RA   Turmel M., Otis C., Lemieux C.;
RT   "The chloroplast and mitochondrial genome sequences of the charophyte
RT   Chaetosphaeridium globosum: insights into the timing of the events
RT   that restructured organelle DNAs within the green algal lineage that
RT   led to land plants.";
RL   Proc. Natl. Acad. Sci. U.S.A. 99:11275-11280(2002).
CC   -!- FUNCTION: Component of the cytochrome b6/f complex which is part
CC       of the photosynthetic respiratory chain.
CC   -!- COFACTOR: Binds two heme groups non-covalently. Heme 1 (or BL or
CC       b562) is low-potential and absorbs at about 562 nm, and heme 2 (or
CC       BH or b566) is high-potential and absorbs at about 566 nm.
CC   -!- SUBUNIT: The main subunits of complex b6-f are: cytochrome b6, 17
CC       kDa polypeptide (petD), cytochrome f and the Rieske protein.
CC   -!- SUBCELLULAR LOCATION: Integral membrane protein. Chloroplast
CC       thylakoid membrane (By similarity).
CC   -!- SIMILARITY: Belongs to the cytochrome b family. PetB subfamily.
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DR   EMBL; AF494278; AAM96527.1; -.
DR   HAMAP; MF_00633; -; 1.
DR   InterPro; IPR005797; Cytb_b6_N.
DR   Pfam; PF00033; cytochrome_b_N; 1.
DR   PROSITE; PS00192; CYTOCHROME_B_HEME; 1.
KW   Transport; Electron transport; Photosynthesis; Chloroplast; Thylakoid;
KW   Heme; Metal-binding; Iron; Transmembrane.
FT   TRANSMEM     32     52       Potential.
FT   TRANSMEM     90    110       Potential.
FT   TRANSMEM    116    136       Potential.
FT   TRANSMEM    186    206       Potential.
FT   METAL        86     86       Iron (heme 1 axial ligand) (By
FT                                similarity).
FT   METAL       100    100       Iron (heme 2 axial ligand) (By
FT                                similarity).
FT   METAL       187    187       Iron (heme 1 axial ligand) (By
FT                                similarity).
FT   METAL       202    202       Iron (heme 2 axial ligand) (By
FT                                similarity).
SQ   SEQUENCE   215 AA;  24230 MW;  2879F90589E0DDFA CRC64;
     MGKVYDWFEE RLEIQAIADD ISSKYVPPHV NIFYCLGGIT FTSFVIQVAS GFAMTFYYRP
     TVTEAFASVQ YIMTEVNFGW LIRSVHRWSA SMMVLMMILH IFRVYLTGGF KKPRELTWVT
     GVILSVLTVS FGVTGYSLPW DQVGYWAVKI VTGVPDAIPV IGSTVVELLR GSVSVGQSTL
     TRFYSLHTFV LPLLTAVFML MHFLMIRKQG ISGPL
//