ID   PCB_FISMU               Reviewed;         324 AA.
AC   Q9F487;
DT   07-FEB-2006, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2001, sequence version 1.
DT   03-AUG-2022, entry version 54.
DE   RecName: Full=Chlorophyll a/b light-harvesting protein Pcb;
GN   Name=pcb; Synonyms=pcbC;
OS   Fischerella muscicola.
OC   Bacteria; Cyanobacteria; Nostocales; Hapalosiphonaceae; Fischerella.
OX   NCBI_TaxID=92938;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND INDUCTION.
RC   STRAIN=ATCC 29114 / PCC 73103 / SAG 1427-1;
RX   PubMed=11287157; DOI=10.1111/j.1574-6968.2001.tb10593.x;
RA   Geiss U., Vinnemeier J., Schoor A., Hagemann M.;
RT   "The iron-regulated isiA gene of Fischerella muscicola strain PCC 73103 is
RT   linked to a likewise regulated gene encoding a Pcb-like chlorophyll-binding
RT   protein.";
RL   FEMS Microbiol. Lett. 197:123-129(2001).
CC   -!- FUNCTION: The antenna complex functions as a light receptor, it
CC       captures and delivers excitation energy to photosystems II and I. The
CC       pcb genes are not related to higher plant LHCs.
CC       {ECO:0000250|UniProtKB:Q6Q972}.
CC   -!- COFACTOR:
CC       Name=chlorophyll a; Xref=ChEBI:CHEBI:58416;
CC         Evidence={ECO:0000250|UniProtKB:Q6Q972};
CC       Note=Chlorophyll a. {ECO:0000250|UniProtKB:Q6Q972};
CC   -!- COFACTOR:
CC       Name=chlorophyll b; Xref=ChEBI:CHEBI:61721;
CC         Evidence={ECO:0000250|UniProtKB:Q6Q972};
CC       Note=Chlorophyll b. {ECO:0000250|UniProtKB:Q6Q972};
CC   -!- SUBUNIT: The antenna complex consists of chlorophylls (a and b) and
CC       chlorophyll a/b binding proteins. {ECO:0000250|UniProtKB:Q6Q972}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane
CC       {ECO:0000250|UniProtKB:Q6Q972}; Multi-pass membrane protein
CC       {ECO:0000250}.
CC   -!- INDUCTION: By iron stress. {ECO:0000269|PubMed:11287157}.
CC   -!- SIMILARITY: Belongs to the PsbB/PsbC family. IsiA/Pcb subfamily.
CC       {ECO:0000305}.
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DR   EMBL; AJ296146; CAC13147.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q9F487; -.
DR   SMR; Q9F487; -.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0009522; C:photosystem I; IEA:UniProtKB-KW.
DR   GO; GO:0009523; C:photosystem II; IEA:UniProtKB-KW.
DR   GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016168; F:chlorophyll binding; IEA:UniProtKB-KW.
DR   GO; GO:0009767; P:photosynthetic electron transport chain; IEA:InterPro.
DR   InterPro; IPR000932; PS_antenna-like.
DR   InterPro; IPR036001; PS_II_antenna-like_sf.
DR   PANTHER; PTHR33180; PTHR33180; 1.
DR   Pfam; PF00421; PSII; 1.
DR   SUPFAM; SSF161077; SSF161077; 1.
PE   2: Evidence at transcript level;
KW   Chlorophyll; Chromophore; Membrane; Photosynthesis; Photosystem I;
KW   Photosystem II; Stress response; Thylakoid; Transmembrane;
KW   Transmembrane helix.
FT   CHAIN           1..324
FT                   /note="Chlorophyll a/b light-harvesting protein Pcb"
FT                   /id="PRO_0000077533"
FT   TRANSMEM        31..51
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        68..88
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        93..113
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        222..242
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        256..276
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        292..312
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   324 AA;  35628 MW;  9CF5244673B5C744 CRC64;
     MAISTDKTFA ANTNSPWLIG NARLIDLSGQ LLGAHIAHAG LIMFWAGSIT ISEVTRFVPG
     IPMYEQQMTL LPHLATLGWG VGAGGEVINT YPYFVIGILH LVASAVLGAG GLFHVFRSPA
     ILYNSGGQVA KFHYEWNDPK KLGLILGHHL IILGFGAFLL VLKAMFFGGI YDTHIENVRL
     ITNPTFDPMT IFSYLVGIKD SHWTLLGIAS VDNLEDVIGG HIWIGSILIL GGIWHILVPP
     FAWVRQILPI VNGEEILSYS LLGLALMAFI SAVFVGYNDT VFPKEFYGEN RIVIATIQWV
     LGILALVGYF WHSWRSRELN SNLS