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APCB_CYAPA
ID   APCB_CYAPA              Reviewed;         161 AA.
AC   P00320;
DT   21-JUL-1986, integrated into UniProtKB/Swiss-Prot.
DT   21-JUL-1986, sequence version 1.
DT   03-AUG-2022, entry version 103.
DE   RecName: Full=Allophycocyanin beta chain;
GN   Name=apcB;
OS   Cyanophora paradoxa.
OG   Plastid; Cyanelle.
OC   Eukaryota; Glaucocystophyceae; Cyanophoraceae; Cyanophora.
OX   NCBI_TaxID=2762;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=2987916; DOI=10.1073/pnas.82.10.3242;
RA   Bryant D.A., de Lorimier R., Lambert D.H., Dubbs J.M., Stirewalt V.L.,
RA   Stevens S.E. Jr., Porter R.D., Tam J., Jay E.;
RT   "Molecular cloning and nucleotide sequence of the alpha and beta subunits
RT   of allophycocyanin from the cyanelle genome of Cyanophora paradoxa.";
RL   Proc. Natl. Acad. Sci. U.S.A. 82:3242-3246(1985).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=UTEX LB 555 / Pringsheim;
RA   Stirewalt V.L., Michalowski C.B., Loeffelhardt W., Bohnert H.J.,
RA   Bryant D.A.;
RT   "Nucleotide sequence of the cyanelle DNA from Cyanophora paradoxa.";
RL   Plant Mol. Biol. Rep. 13:327-332(1995).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=UTEX LB 555 / Pringsheim;
RA   Loeffelhardt W., Stirewalt V.L., Michalowski C.B., Annarella M.,
RA   Farley J.Y., Schluchter W.M., Chung S., Newmann-Spallart C., Steiner J.M.,
RA   Jakowitsch J., Bohnert H.J., Bryant D.A.;
RT   "The complete sequence of the cyanelle genome of Cyanophora paradoxa: the
RT   genetic complexity of a primitive plastid.";
RL   (In) Schenk H.E.A., Herrmann R., Jeon K.W., Mueller N.E., Schwemmler W.
RL   (eds.);
RL   Eukaryotism and symbiosis, pp.40-48, Springer-Verlag, Heidelberg (1997).
RN   [4]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 1-15.
RX   PubMed=2998775; DOI=10.1002/j.1460-2075.1985.tb03870.x;
RA   Lemaux P.G., Grossman A.R.;
RT   "Major light-harvesting polypeptides encoded in polycistronic transcripts
RT   in a eukaryotic alga.";
RL   EMBO J. 4:1911-1919(1985).
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: Plastid, cyanelle thylakoid membrane
CC       {ECO:0000250}; Peripheral membrane protein {ECO:0000250}; Stromal 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; M11159; AAA31694.1; -; Genomic_DNA.
DR   EMBL; X02792; CAA26559.1; -; Genomic_DNA.
DR   EMBL; U30821; AAA81189.1; -; Genomic_DNA.
DR   PIR; A00327; AFKTB.
DR   RefSeq; NP_043158.1; NC_001675.1.
DR   AlphaFoldDB; P00320; -.
DR   SMR; P00320; -.
DR   GeneID; 801543; -.
DR   GO; GO:0033115; C:cyanelle thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0030089; C:phycobilisome; IEA:UniProtKB-KW.
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   3: Inferred from homology;
KW   Antenna complex; Bile pigment; Chromophore; Cyanelle; Electron transport;
KW   Membrane; Methylation; Photosynthesis; Phycobilisome; Plastid; Thylakoid;
KW   Transport.
FT   CHAIN           1..161
FT                   /note="Allophycocyanin beta chain"
FT                   /id="PRO_0000199095"
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"
SQ   SEQUENCE   161 AA;  17283 MW;  93AC95E436B5755C CRC64;
     MQDAITAVIN AADVQGKYLD TASVEKLKSY FQTGELRVRA AATIAANSSA IIKEAVAKSL
     LYSDITRPGG NMYTTRRYAA CIRDLDYYVR YATYAMLAGD TSILDERVLN GLKETYNSLG
     VPVGATIQAI QAAKEVTAGL VGPDAGREMG IYYDYISSGL G
 
 
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