ID   PHCA_ANASL              Reviewed;          21 AA.
AC   P83162;
DT   28-NOV-2006, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 2.
DT   03-AUG-2022, entry version 43.
DE   RecName: Full=C-phycocyanin alpha subunit;
DE   Flags: Fragment;
GN   Name=cpcA {ECO:0000250|UniProtKB:P84340};
OS   Anabaena sp. (strain L31).
OC   Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Anabaena;
OC   unclassified Anabaena.
OX   NCBI_TaxID=29412;
RN   [1] {ECO:0000305}
RP   PROTEIN SEQUENCE OF 2-21.
RA   Apte S.K., Uhlemann E., Schmid R., Altendorf K.;
RL   Submitted (OCT-2001) 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
CC       {ECO:0000250|UniProtKB:P84340}; Peripheral membrane protein
CC       {ECO:0000250|UniProtKB:P84340}; Cytoplasmic side
CC       {ECO:0000250|UniProtKB:P84340}. Note=Part of the phycobilisome rod.
CC       {ECO:0000250|UniProtKB:P84340}.
CC   -!- PTM: Contains one covalently linked bilin chromophore.
CC       {ECO:0000250|UniProtKB:P84340}.
CC   -!- SIMILARITY: Belongs to the phycobiliprotein family. {ECO:0000255}.
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DR   AlphaFoldDB; P83162; -.
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   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000269|Ref.1"
FT   CHAIN           2..>21
FT                   /note="C-phycocyanin alpha subunit"
FT                   /id="PRO_0000262932"
FT   NON_TER         21
SQ   SEQUENCE   21 AA;  2221 MW;  C615004EABA7A0F4 CRC64;
     MVKTPITEAI AAADTQGRFL S