LHB_RHOTE
ID LHB_RHOTE Reviewed; 55 AA.
AC P80587;
DT 01-OCT-1996, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-1996, sequence version 1.
DT 03-AUG-2022, entry version 82.
DE RecName: Full=Light-harvesting polypeptide B-800/860 beta chain;
DE AltName: Full=Antenna pigment polypeptide beta chain;
DE AltName: Full=LH-2;
OS Rhodocyclus tenuis (Rhodospirillum tenue).
OC Bacteria; Proteobacteria; Betaproteobacteria; Rhodocyclales;
OC Rhodocyclaceae; Rhodocyclus.
OX NCBI_TaxID=1066;
RN [1]
RP PROTEIN SEQUENCE.
RC STRAIN=ATCC 25093 / DSM 109 / 2761;
RX PubMed=8681949; DOI=10.1111/j.1432-1033.1996.0381z.x;
RA Hu Q., Brunisholz R.A., Frank G., Zuber H.;
RT "The antenna complexes of the purple non-sulfur photosynthetic bacterium
RT Rhodocyclus tenuis. Structural and spectral characterization.";
RL Eur. J. Biochem. 238:381-390(1996).
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 beta subunit family.
CC {ECO:0000305}.
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DR PIR; S68882; S68882.
DR AlphaFoldDB; P80587; -.
DR SMR; P80587; -.
DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
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; 1.20.5.250; -; 1.
DR InterPro; IPR000066; Antenna_a/b.
DR InterPro; IPR023623; Antenna_beta_CS.
DR InterPro; IPR023624; Antenna_beta_dom_sf.
DR InterPro; IPR002362; LHB-1/5.
DR InterPro; IPR035889; Light-harvesting_complex.
DR Pfam; PF00556; LHC; 1.
DR PIRSF; PIRSF002900; Antenna_beta; 1.
DR PRINTS; PR00674; LIGHTHARVSTB.
DR SUPFAM; SSF56918; SSF56918; 1.
DR PROSITE; PS00969; ANTENNA_COMP_BETA; 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..55
FT /note="Light-harvesting polypeptide B-800/860 beta chain"
FT /id="PRO_0000099838"
FT TOPO_DOM 1..21
FT /note="Cytoplasmic"
FT /evidence="ECO:0000255"
FT TRANSMEM 22..44
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TOPO_DOM 45..55
FT /note="Periplasmic"
FT /evidence="ECO:0000255"
FT BINDING 38
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"
SQ SEQUENCE 55 AA; 5787 MW; FCC9B702BCEBC4C6 CRC64;
ADANKVWPTG LTVAEAEELH TYVTNGFRVF VGIAVVAHVL VFAAHPWGRG GALVA
