APCB_ARTPT
ID APCB_ARTPT Reviewed; 161 AA.
AC P72505; O06675;
DT 15-DEC-1998, integrated into UniProtKB/Swiss-Prot.
DT 01-FEB-1997, sequence version 1.
DT 03-AUG-2022, entry version 109.
DE RecName: Full=Allophycocyanin beta chain;
GN Name=apcB;
OS Arthrospira platensis (Spirulina platensis).
OC Bacteria; Cyanobacteria; Oscillatoriophycideae; Oscillatoriales;
OC Microcoleaceae; Arthrospira.
OX NCBI_TaxID=118562;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC STRAIN=Italy;
RA Meesapyodsuk D., Chetkul W., Nomsasawai P., Anjard C., Tanticharoen M.,
RA Chevadhanarak S.;
RT "Organization and nucleotide sequence of the a, b and c subunits of
RT allophycocyanin genes from Spirulina platensis.";
RL Submitted (FEB-1996) to the EMBL/GenBank/DDBJ databases.
RN [2]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC STRAIN=F3;
RA Qin S., Kawata Y., Yano S., Tseng C., Kojima H.;
RT "Cloning and sequencing of the allophycocyanin genes from cyanobacterium
RT Spirulina platensis.";
RL Submitted (JUN-1996) to the EMBL/GenBank/DDBJ databases.
RN [3]
RP X-RAY CRYSTALLOGRAPHY (2.3 ANGSTROMS), AND METHYLATION AT ASN-71.
RX PubMed=7783202; DOI=10.1006/jmbi.1995.0307;
RA Brejc K., Ficner R., Huber R., Steinbacher S.;
RT "Isolation, crystallization, crystal structure analysis and refinement of
RT allophycocyanin from the cyanobacterium Spirulina platensis at 2.3 A
RT resolution.";
RL J. Mol. Biol. 249:424-440(1995).
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.
CC -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane; Peripheral membrane
CC protein; Cytoplasmic side. Note=Forms the core of the phycobilisome.
CC -!- PTM: Contains one covalently linked phycocyanobilin chromophore.
CC -!- SIMILARITY: Belongs to the phycobiliprotein family. {ECO:0000305}.
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DR EMBL; X95898; CAA65142.1; -; Genomic_DNA.
DR EMBL; D86179; BAA19986.1; -; Genomic_DNA.
DR PIR; S55558; S55558.
DR PDB; 1ALL; X-ray; 2.30 A; B=1-161.
DR PDBsum; 1ALL; -.
DR AlphaFoldDB; P72505; -.
DR SMR; P72505; -.
DR MINT; P72505; -.
DR iPTMnet; P72505; -.
DR EvolutionaryTrace; P72505; -.
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 Thylakoid; Transport.
FT CHAIN 1..161
FT /note="Allophycocyanin beta chain"
FT /id="PRO_0000199102"
FT BINDING 81
FT /ligand="(2R,3E)-phycocyanobilin"
FT /ligand_id="ChEBI:CHEBI:85275"
FT /note="covalent, via 1 link"
FT MOD_RES 71
FT /note="N4-methylasparagine"
FT /evidence="ECO:0000269|PubMed:7783202"
FT CONFLICT 21
FT /note="R -> A (in Ref. 2; BAA19986)"
FT /evidence="ECO:0000305"
FT HELIX 4..13
FT /evidence="ECO:0007829|PDB:1ALL"
FT TURN 14..16
FT /evidence="ECO:0007829|PDB:1ALL"
FT HELIX 21..59
FT /evidence="ECO:0007829|PDB:1ALL"
FT TURN 60..62
FT /evidence="ECO:0007829|PDB:1ALL"
FT TURN 64..66
FT /evidence="ECO:0007829|PDB:1ALL"
FT HELIX 75..98
FT /evidence="ECO:0007829|PDB:1ALL"
FT HELIX 102..107
FT /evidence="ECO:0007829|PDB:1ALL"
FT TURN 108..111
FT /evidence="ECO:0007829|PDB:1ALL"
FT HELIX 112..119
FT /evidence="ECO:0007829|PDB:1ALL"
FT HELIX 123..159
FT /evidence="ECO:0007829|PDB:1ALL"
SQ SEQUENCE 161 AA; 17415 MW; 0B8176CBBF011431 CRC64;
MQDAITSVIN SSDVQGKYLD RSAIQKLKAY FATGELRVRA ATTISANAAN IVKEAVAKSL
LYSDITRPGG NMYTTRRYAA CIRDLDYYLR YATYAMLAGD PSILDERVLN GLKETYNSLG
VPIGATVQAI QAMKEVTAGL VGADAGKEMG IYFDYICSGL S