ID   PHAA_THEVB              Reviewed;         161 AA.
AC   P50030;
DT   01-OCT-1996, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 2.
DT   03-AUG-2022, entry version 119.
DE   RecName: Full=Allophycocyanin alpha chain;
GN   Name=apcA; OrderedLocusNames=tll0957;
OS   Thermosynechococcus vestitus (strain NIES-2133 / IAM M-273 / BP-1).
OC   Bacteria; Cyanobacteria; Pseudanabaenales; Thermosynechococcaceae;
OC   Thermosynechococcus.
OX   NCBI_TaxID=197221;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Shimazu T., Soga M., Hirano M., Katoh S.;
RT   "Cloning and sequencing of the allophycocyanin operon from the thermophilic
RT   cyanobacterium Synechococcus elongatus.";
RL   Submitted (JUN-1993) to the EMBL/GenBank/DDBJ databases.
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=NIES-2133 / IAM M-273 / BP-1;
RX   PubMed=12240834; DOI=10.1093/dnares/9.4.123;
RA   Nakamura Y., Kaneko T., Sato S., Ikeuchi M., Katoh H., Sasamoto S.,
RA   Watanabe A., Iriguchi M., Kawashima K., Kimura T., Kishida Y., Kiyokawa C.,
RA   Kohara M., Matsumoto M., Matsuno A., Nakazaki N., Shimpo S., Sugimoto M.,
RA   Takeuchi C., Yamada M., Tabata S.;
RT   "Complete genome structure of the thermophilic cyanobacterium
RT   Thermosynechococcus elongatus BP-1.";
RL   DNA Res. 9:123-130(2002).
CC   -!- FUNCTION: Light-harvesting photosynthetic bile pigment-protein from the
CC       phycobiliprotein complex. Allophycocyanin has a maximum absorption at
CC       approximately 650 nanometers.
CC   -!- SUBUNIT: Heterodimer of an alpha and a beta chain. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000250};
CC       Peripheral membrane protein {ECO:0000250}; Cytoplasmic side
CC       {ECO:0000250}. Note=Forms the core of the phycobilisome. {ECO:0000250}.
CC   -!- PTM: Contains one covalently linked phycocyanobilin chromophore.
CC       {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the phycobiliprotein family. {ECO:0000305}.
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DR   EMBL; D16540; BAA03976.1; -; Genomic_DNA.
DR   EMBL; BA000039; BAC08509.1; -; Genomic_DNA.
DR   RefSeq; NP_681747.1; NC_004113.1.
DR   RefSeq; WP_011056801.1; NC_004113.1.
DR   PDB; 2V8A; X-ray; 3.50 A; A=1-161.
DR   PDB; 3DBJ; X-ray; 2.90 A; A/C/E/G=1-161.
DR   PDBsum; 2V8A; -.
DR   PDBsum; 3DBJ; -.
DR   AlphaFoldDB; P50030; -.
DR   SMR; P50030; -.
DR   STRING; 197221.22294680; -.
DR   EnsemblBacteria; BAC08509; BAC08509; BAC08509.
DR   KEGG; tel:tll0957; -.
DR   PATRIC; fig|197221.4.peg.1004; -.
DR   eggNOG; ENOG502Z7RG; Bacteria.
DR   OMA; GGQLFQK; -.
DR   OrthoDB; 1461468at2; -.
DR   EvolutionaryTrace; P50030; -.
DR   Proteomes; UP000000440; Chromosome.
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.
DR   Gene3D; 1.10.490.20; -; 1.
DR   InterPro; IPR009050; Globin-like_sf.
DR   InterPro; IPR012128; Phycobilisome_asu/bsu.
DR   InterPro; IPR038719; Phycobilisome_asu/bsu_sf.
DR   Pfam; PF00502; Phycobilisome; 1.
DR   PIRSF; PIRSF000081; Phycocyanin; 1.
DR   SUPFAM; SSF46458; SSF46458; 1.
PE   1: Evidence at protein level;
KW   3D-structure; Antenna complex; Bile pigment; Chromophore;
KW   Electron transport; Membrane; Methylation; Photosynthesis; Phycobilisome;
KW   Reference proteome; Thylakoid; Transport.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000250"
FT   CHAIN           2..161
FT                   /note="Allophycocyanin alpha chain"
FT                   /id="PRO_0000199075"
FT   BINDING         81
FT                   /ligand="(2R,3E)-phycocyanobilin"
FT                   /ligand_id="ChEBI:CHEBI:85275"
FT                   /note="covalent, via 1 link"
FT                   /evidence="ECO:0000250"
FT   MOD_RES         71
FT                   /note="N4-methylasparagine"
FT                   /evidence="ECO:0000250"
FT   HELIX           3..13
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   HELIX           20..31
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   HELIX           33..45
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   HELIX           47..61
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   HELIX           63..65
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   HELIX           75..98
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   HELIX           102..108
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   TURN            109..111
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   HELIX           112..119
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   HELIX           123..140
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   HELIX           143..160
FT                   /evidence="ECO:0007829|PDB:2V8A"
SQ   SEQUENCE   161 AA;  17539 MW;  45B4B19673CAF820 CRC64;
     MSVVTKSIVN ADAEARYLSP GELDRIKNFV STGERRLRIA QTLTENRERI VKQAGDQLFQ
     KRPDVVSPGG NAYGEEMTAT CLRDLDYYLR LVTYGIVAGD VTPIEEIGLV GVREMYNSLG
     TPIPAVAEGI RAMKNVACSL LSAEDAAEAG SYFDFVIGAM Q