LHA3_HALHL
ID LHA3_HALHL Reviewed; 49 AA.
AC P80107;
DT 01-FEB-1994, integrated into UniProtKB/Swiss-Prot.
DT 01-FEB-1994, sequence version 1.
DT 03-AUG-2022, entry version 87.
DE RecName: Full=Light-harvesting protein B800/850/890 alpha-3 chain;
DE AltName: Full=Antenna pigment protein alpha-3 chain;
DE AltName: Full=EHA-alpha-3;
DE Flags: Fragment;
OS Halorhodospira halophila (strain DSM 244 / SL1) (Ectothiorhodospira
OS halophila (strain DSM 244 / SL1)).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Chromatiales;
OC Ectothiorhodospiraceae; Halorhodospira.
OX NCBI_TaxID=349124;
RN [1]
RP PROTEIN SEQUENCE.
RX PubMed=1577009; DOI=10.1111/j.1432-1033.1992.tb16858.x;
RA Wagner-Huber R., Brunisholz R.A., Bissig I., Frank G., Suter F., Zuber H.;
RT "The primary structure of the antenna polypeptides of Ectothiorhodospira
RT halochloris and Ectothiorhodospira halophila. Four core-type antenna
RT polypeptides in E. halochloris and E. halophila.";
RL Eur. J. Biochem. 205:917-925(1992).
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 PIR; S23290; S23290.
DR AlphaFoldDB; P80107; -.
DR SMR; P80107; -.
DR STRING; 349124.Hhal_1408; -.
DR eggNOG; ENOG5033EHH; Bacteria.
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 Transmembrane; Transmembrane helix.
FT CHAIN 1..>49
FT /note="Light-harvesting protein B800/850/890 alpha-3 chain"
FT /id="PRO_0000099780"
FT TOPO_DOM 1..14
FT /note="Cytoplasmic"
FT /evidence="ECO:0000255"
FT TRANSMEM 15..35
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TOPO_DOM 36..>49
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 NON_TER 49
SQ SEQUENCE 49 AA; 5479 MW; 753BFC2EC2014419 CRC64;
MNQARIWLVV KPSVGLPLLL GVVLLIALLV HGAILTNTSW YPTYFEGNW
