PHAA_MASLA
ID PHAA_MASLA Reviewed; 160 AA.
AC P00315;
DT 21-JUL-1986, integrated into UniProtKB/Swiss-Prot.
DT 21-JUL-1986, sequence version 1.
DT 03-AUG-2022, entry version 96.
DE RecName: Full=Allophycocyanin alpha chain;
GN Name=apcA;
OS Mastigocladus laminosus (Fischerella sp.).
OC Bacteria; Cyanobacteria; Nostocales; Hapalosiphonaceae; Mastigocladus.
OX NCBI_TaxID=83541;
RN [1]
RP PROTEIN SEQUENCE.
RX PubMed=6792029; DOI=10.1515/bchm2.1981.362.1.611;
RA Sidler W., Gysi J., Isker E., Zuber H.;
RT "The complete amino acid sequence of both subunits of allophycocyanin, a
RT light harvesting protein-pigment complex from the cyanobacterium
RT Mastigocladus laminosus.";
RL Hoppe-Seyler's Z. Physiol. Chem. 362:611-628(1981).
RN [2]
RP X-RAY CRYSTALLOGRAPHY (2.3 ANGSTROMS), AND METHYLATION AT ASN-70.
RC STRAIN=PCC 7603;
RX PubMed=9990029; DOI=10.1073/pnas.96.4.1363;
RA Reuter W., Wiegand G., Huber R., Than M.E.;
RT "Structural analysis at 2.2 A of orthorhombic crystals presents the
RT asymmetry of the allophycocyanin-linker complex, AP.LC7.8, from
RT phycobilisomes of Mastigocladus laminosus.";
RL Proc. Natl. Acad. Sci. U.S.A. 96:1363-1368(1999).
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: Component of the phycobilisome. Heterodimer of an alpha and a
CC 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 PDB; 1B33; X-ray; 2.30 A; A/C/E/H/J/L=1-160.
DR PDBsum; 1B33; -.
DR AlphaFoldDB; P00315; -.
DR SMR; P00315; -.
DR iPTMnet; P00315; -.
DR EvolutionaryTrace; P00315; -.
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 Direct protein sequencing; Electron transport; Membrane; Methylation;
KW Photosynthesis; Phycobilisome; Thylakoid; Transport.
FT CHAIN 1..160
FT /note="Allophycocyanin alpha chain"
FT /id="PRO_0000199073"
FT BINDING 80
FT /ligand="(2R,3E)-phycocyanobilin"
FT /ligand_id="ChEBI:CHEBI:85275"
FT /note="covalent, via 1 link"
FT MOD_RES 70
FT /note="N4-methylasparagine"
FT /evidence="ECO:0000269|PubMed:9990029"
FT HELIX 2..12
FT /evidence="ECO:0007829|PDB:1B33"
FT HELIX 19..30
FT /evidence="ECO:0007829|PDB:1B33"
FT HELIX 33..44
FT /evidence="ECO:0007829|PDB:1B33"
FT HELIX 46..60
FT /evidence="ECO:0007829|PDB:1B33"
FT HELIX 63..65
FT /evidence="ECO:0007829|PDB:1B33"
FT HELIX 74..97
FT /evidence="ECO:0007829|PDB:1B33"
FT HELIX 101..107
FT /evidence="ECO:0007829|PDB:1B33"
FT TURN 108..110
FT /evidence="ECO:0007829|PDB:1B33"
FT HELIX 111..118
FT /evidence="ECO:0007829|PDB:1B33"
FT HELIX 122..136
FT /evidence="ECO:0007829|PDB:1B33"
FT TURN 137..139
FT /evidence="ECO:0007829|PDB:1B33"
FT HELIX 142..158
FT /evidence="ECO:0007829|PDB:1B33"
SQ SEQUENCE 160 AA; 17121 MW; 18B9787DDC22A3C4 CRC64;
SIVTKSIVNA DAEARYLSPG ELDRIKSFVS SGEKRLRIAQ ILTDNRERIV KQAGDQLFQK
RPDVVSPGGN AYGQEMTATC LRDLDYYLRL ITYGIVAGDV TPIEEIGIVG VREMYKSLGT
PIDAVAAGVS AMKNVASSIL SAEDAAEAGA YFDYVAGALA
