ID   LHA1_RHOPA              Reviewed;          59 AA.
AC   P35101;
DT   01-FEB-1994, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1994, sequence version 1.
DT   03-AUG-2022, entry version 127.
DE   RecName: Full=Light-harvesting protein B-800-850 alpha chain A;
DE   AltName: Full=Antenna pigment protein alpha chain A;
DE   AltName: Full=LH II-A alpha;
GN   Name=pucAA; OrderedLocusNames=RPA2653;
OS   Rhodopseudomonas palustris (strain ATCC BAA-98 / CGA009).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Bradyrhizobiaceae; Rhodopseudomonas.
OX   NCBI_TaxID=258594;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND PROTEIN SEQUENCE OF 1-9.
RC   STRAIN=1E5;
RX   PubMed=2670551; DOI=10.1002/j.1460-2075.1989.tb03509.x;
RA   Tadros M.H., Waterkamp K.;
RT   "Multiple copies of the coding regions for the light-harvesting B800-850
RT   alpha- and beta-polypeptides are present in the Rhodopseudomonas palustris
RT   genome.";
RL   EMBO J. 8:1303-1308(1989).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-98 / CGA009;
RX   PubMed=14704707; DOI=10.1038/nbt923;
RA   Larimer F.W., Chain P., Hauser L., Lamerdin J.E., Malfatti S., Do L.,
RA   Land M.L., Pelletier D.A., Beatty J.T., Lang A.S., Tabita F.R.,
RA   Gibson J.L., Hanson T.E., Bobst C., Torres y Torres J.L., Peres C.,
RA   Harrison F.H., Gibson J., Harwood C.S.;
RT   "Complete genome sequence of the metabolically versatile photosynthetic
RT   bacterium Rhodopseudomonas palustris.";
RL   Nat. Biotechnol. 22:55-61(2004).
RN   [3]
RP   PROTEIN SEQUENCE OF 1-49.
RC   STRAIN=2.6.1 / French;
RA   Brunisholz R.A., Evans M.B., Cogdell R.J., Frank G., Zuber H.;
RL   (In) Baltscheffsky M. (eds.);
RL   Current research in photosynthesis, pp.2:61-64, Kluwer Academic Publishers,
RL   Dordrecht (1990).
CC   -!- FUNCTION: Antenna complexes are light-harvesting systems, which
CC       transfer the excitation energy to the reaction centers.
CC   -!- SUBUNIT: The core complex is formed by different alpha and beta chains,
CC       binding bacteriochlorophyll molecules, and arranged most probably in
CC       tetrameric structures disposed around the reaction center. The non-
CC       pigmented gamma chains may constitute additional components.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane; Single-pass type II membrane
CC       protein.
CC   -!- SIMILARITY: Belongs to the antenna complex alpha subunit family.
CC       {ECO:0000305}.
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DR   EMBL; X64956; CAA46118.1; -; Genomic_DNA.
DR   EMBL; BX572601; CAE28094.1; -; Genomic_DNA.
DR   RefSeq; WP_011158203.1; NC_005296.1.
DR   AlphaFoldDB; P35101; -.
DR   SMR; P35101; -.
DR   STRING; 258594.RPA2653; -.
DR   PRIDE; P35101; -.
DR   EnsemblBacteria; CAE28094; CAE28094; RPA2653.
DR   GeneID; 66893725; -.
DR   KEGG; rpa:RPA2653; -.
DR   eggNOG; ENOG5033EHH; Bacteria.
DR   HOGENOM; CLU_202473_0_0_5; -.
DR   OMA; AYWEGGA; -.
DR   PhylomeDB; P35101; -.
DR   BioCyc; RPAL258594:TX73_RS13540-MON; -.
DR   Proteomes; UP000001426; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0019866; C:organelle inner membrane; IEA:InterPro.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0030077; C:plasma membrane light-harvesting complex; IEA:InterPro.
DR   GO; GO:0042314; F:bacteriochlorophyll binding; IEA:UniProtKB-KW.
DR   GO; GO:0045156; F:electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity; IEA:InterPro.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0019684; P:photosynthesis, light reaction; IEA:InterPro.
DR   Gene3D; 4.10.220.20; -; 1.
DR   InterPro; IPR000066; Antenna_a/b.
DR   InterPro; IPR018332; Antenna_alpha.
DR   InterPro; IPR002361; Antenna_alpha_CS.
DR   InterPro; IPR035889; Light-harvesting_complex.
DR   Pfam; PF00556; LHC; 1.
DR   PRINTS; PR00673; LIGHTHARVSTA.
DR   SUPFAM; SSF56918; SSF56918; 1.
DR   PROSITE; PS00968; ANTENNA_COMP_ALPHA; 1.
PE   1: Evidence at protein level;
KW   Antenna complex; Bacteriochlorophyll; Cell inner membrane; Cell membrane;
KW   Chlorophyll; Chromophore; Direct protein sequencing;
KW   Light-harvesting polypeptide; Magnesium; Membrane; Metal-binding;
KW   Reference proteome; Transmembrane; Transmembrane helix.
FT   CHAIN           1..59
FT                   /note="Light-harvesting protein B-800-850 alpha chain A"
FT                   /id="PRO_0000099796"
FT   TOPO_DOM        1..11
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        12..35
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        36..59
FT                   /note="Periplasmic"
FT                   /evidence="ECO:0000255"
FT   BINDING         31
FT                   /ligand="a bacteriochlorophyll"
FT                   /ligand_id="ChEBI:CHEBI:38201"
FT                   /ligand_part="Mg"
FT                   /ligand_part_id="ChEBI:CHEBI:25107"
FT                   /note="axial binding residue"
FT                   /evidence="ECO:0000255"
FT   VARIANT         48
FT                   /note="K -> P (in strain: 2.6.1 / French)"
SQ   SEQUENCE   59 AA;  6394 MW;  020EC7627A37AFF9 CRC64;
     MNQARIWTVV KPTVGLPLLL GSVTVIAILV HFAVLSHTTW FSKYWNGKAA AIESSVNVG