ID   PHCA_TOLSC              Reviewed;          16 AA.
AC   P83720;
DT   21-DEC-2004, integrated into UniProtKB/Swiss-Prot.
DT   21-DEC-2004, sequence version 1.
DT   03-AUG-2022, entry version 29.
DE   RecName: Full=C-phycocyanin alpha subunit;
DE   Flags: Fragment;
GN   Name=cpcA;
OS   Tolypothrix scytonemoides.
OC   Bacteria; Cyanobacteria; Nostocales; Tolypothrichaceae; Tolypothrix.
OX   NCBI_TaxID=256428;
RN   [1] {ECO:0000305}
RP   PROTEIN SEQUENCE.
RC   STRAIN=UU512173;
RA   Uma Maheshwari R., Siddharthan S., Elango K., Anand N.;
RL   Submitted (NOV-2003) to UniProtKB.
CC   -!- FUNCTION: Light-harvesting photosynthetic bile pigment-protein from the
CC       phycobiliprotein complex (phycobilisome, PBS). Phycocyanin is the major
CC       phycobiliprotein in the PBS rod.
CC   -!- SUBUNIT: Heterodimer of an alpha and a beta subunit, which further
CC       assembles into trimers and the trimers into hexamers.
CC       {ECO:0000250|UniProtKB:P13530}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000250};
CC       Peripheral membrane protein {ECO:0000250}; Cytoplasmic side
CC       {ECO:0000250}. Note=Part of the phycobilisome rod. {ECO:0000250}.
CC   -!- PTM: Contains one covalently linked bilin chromophore.
CC       {ECO:0000250|UniProtKB:P13530}.
CC   -!- SIMILARITY: Belongs to the phycobiliprotein family. {ECO:0000255}.
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DR   AlphaFoldDB; P83720; -.
DR   GO; GO:0030089; C:phycobilisome; IEA:UniProtKB-KW.
DR   GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-KW.
PE   1: Evidence at protein level;
KW   Antenna complex; Bile pigment; Chromophore; Direct protein sequencing;
KW   Electron transport; Membrane; Photosynthesis; Phycobilisome; Thylakoid;
KW   Transport.
FT   CHAIN           1..>16
FT                   /note="C-phycocyanin alpha subunit"
FT                   /id="PRO_0000199134"
FT   NON_TER         16
SQ   SEQUENCE   16 AA;  1586 MW;  C51690F4C58D8135 CRC64;
     VKTPITEAIA AADTQG