ID   PHBB_MASLA              Reviewed;         169 AA.
AC   P07553;
DT   01-APR-1988, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1991, sequence version 2.
DT   03-AUG-2022, entry version 91.
DE   RecName: Full=Phycobiliprotein beta chain;
DE   AltName: Full=16.2;
GN   Name=apcD;
OS   Mastigocladus laminosus (Fischerella sp.).
OC   Bacteria; Cyanobacteria; Nostocales; Hapalosiphonaceae; Mastigocladus.
OX   NCBI_TaxID=83541;
RN   [1]
RP   PROTEIN SEQUENCE.
RX   PubMed=3103645; DOI=10.1515/bchm3.1987.368.1.1;
RA   Rumbeli R., Wirth M., Suter F., Zuber H.;
RT   "The phycobiliprotein beta 16.2 of the allophycocyanin core from the
RT   cyanobacterium Mastigocladus laminosus. Characterization and complete
RT   amino-acid sequence.";
RL   Biol. Chem. Hoppe-Seyler 368:1-9(1987).
RN   [2]
RP   PROTEIN SEQUENCE OF 58-100, AND METHYLATION AT ASN-72.
RX   PubMed=3122783; DOI=10.1515/bchm3.1987.368.2.1401;
RA   Ruembeli R., Suter F., Wirth M., Sidler W., Zuber H.;
RT   "Isolation and localization of N4-methylasparagine in phycobiliproteins
RT   from the cyanobacterium Mastigocladus laminosus.";
RL   Biol. Chem. Hoppe-Seyler 368:1401-1406(1987).
RN   [3]
RP   PROTEIN SEQUENCE OF 55-83, AND METHYLATION AT ASN-72.
RA   Ruembeli R., Suter F., Wirth M., Sidler W., Zuber H.;
RT   "Gamma-N-methylasparagine in phycobiliproteins from the cyanobacteria
RT   Mastigocladus laminosus and Calothrix.";
RL   FEBS Lett. 221:1-2(1987).
CC   -!- FUNCTION: Light-harvesting photosynthetic bile pigment-protein from the
CC       phycobiliprotein complex. This is a protein functionally equivalent to,
CC       but with weaker absorbance than, allophycocyanin beta chain.
CC   -!- SUBUNIT: Heterodimer of an alpha and a beta chain.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane; Peripheral membrane
CC       protein; Cytoplasmic side. Note=A minor component of the phycobilisome
CC       core.
CC   -!- PTM: Contains one covalently linked bilin chromophore.
CC   -!- SIMILARITY: Belongs to the phycobiliprotein family. {ECO:0000305}.
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DR   AlphaFoldDB; P07553; -.
DR   SMR; P07553; -.
DR   iPTMnet; P07553; -.
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   Antenna complex; Bile pigment; Chromophore; Direct protein sequencing;
KW   Electron transport; Membrane; Methylation; Photosynthesis; Phycobilisome;
KW   Thylakoid; Transport.
FT   CHAIN           1..169
FT                   /note="Phycobiliprotein beta chain"
FT                   /id="PRO_0000199112"
FT   BINDING         82
FT                   /ligand="(2R,3E)-phycocyanobilin"
FT                   /ligand_id="ChEBI:CHEBI:85275"
FT                   /note="covalent, via 1 link"
FT   MOD_RES         72
FT                   /note="N4-methylasparagine"
FT                   /evidence="ECO:0000269|PubMed:3122783, ECO:0000269|Ref.3"
FT   CONFLICT        72
FT                   /note="N -> S (in Ref. 1; AA sequence)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   169 AA;  18845 MW;  31A4712175057F35 CRC64;
     MRDAVTSLIK NYDVAGRYFD RNAIESLKSY FESGTQRVQA AKAINANAAA IVKQTGSKLF
     DEQPELIRPG GNAYTTRRYA ACLRDLDYYL RYATYAIVAG SMDVLDERVL QGLRETYNSL
     GVPIGPTVRG IQIMKEIVKE QLGAAGIPNT SFVDEPFDYM TRELGEKDI