ID   APCB_THEVB              Reviewed;         161 AA.
AC   P50031;
DT   01-OCT-1996, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-1996, sequence version 1.
DT   03-AUG-2022, entry version 119.
DE   RecName: Full=Allophycocyanin beta chain;
GN   Name=apcB; OrderedLocusNames=tll0956;
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}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; D16540; BAA03977.1; -; Genomic_DNA.
DR   EMBL; BA000039; BAC08508.1; -; Genomic_DNA.
DR   RefSeq; NP_681746.1; NC_004113.1.
DR   RefSeq; WP_011056800.1; NC_004113.1.
DR   PDB; 2V8A; X-ray; 3.50 A; B=1-161.
DR   PDB; 3DBJ; X-ray; 2.90 A; B/D/F/H=1-161.
DR   PDBsum; 2V8A; -.
DR   PDBsum; 3DBJ; -.
DR   AlphaFoldDB; P50031; -.
DR   SMR; P50031; -.
DR   STRING; 197221.22294679; -.
DR   EnsemblBacteria; BAC08508; BAC08508; BAC08508.
DR   KEGG; tel:tll0956; -.
DR   PATRIC; fig|197221.4.peg.1003; -.
DR   eggNOG; ENOG502Z7X0; Bacteria.
DR   OMA; CIRDMDY; -.
DR   OrthoDB; 1494063at2; -.
DR   EvolutionaryTrace; P50031; -.
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   CDD; cd12126; APC_beta; 1.
DR   Gene3D; 1.10.490.20; -; 1.
DR   InterPro; IPR006245; ApcB.
DR   InterPro; IPR009050; Globin-like_sf.
DR   InterPro; IPR012128; Phycobilisome_asu/bsu.
DR   InterPro; IPR038719; Phycobilisome_asu/bsu_sf.
DR   PANTHER; PTHR34011:SF3; PTHR34011:SF3; 1.
DR   Pfam; PF00502; Phycobilisome; 1.
DR   PIRSF; PIRSF000081; Phycocyanin; 1.
DR   SUPFAM; SSF46458; SSF46458; 1.
DR   TIGRFAMs; TIGR01337; apcB; 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   CHAIN           1..161
FT                   /note="Allophycocyanin beta chain"
FT                   /id="PRO_0000199103"
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           4..15
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   HELIX           21..32
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   HELIX           34..46
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   HELIX           48..59
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   STRAND          61..63
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   TURN            64..66
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   STRAND          70..72
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   HELIX           75..98
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   HELIX           102..107
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   HELIX           112..119
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   HELIX           123..141
FT                   /evidence="ECO:0007829|PDB:2V8A"
FT   HELIX           143..160
FT                   /evidence="ECO:0007829|PDB:2V8A"
SQ   SEQUENCE   161 AA;  17359 MW;  B3627DDFFDD014C7 CRC64;
     MQDAITAVIN ASDVQGKYLD TAAMEKLKAY FATGELRVRA ASVISANAAN IVKEAVAKSL
     LYSDITRPGG NMYTTRRYAA CIRDLDYYLR YATYAMLAGD PSILDERVLN GLKETYNSLG
     VPIAATVQAI QAMKEVTASL VGADAGKEMG IYFDYICSGL S