LHB_RHORU
ID LHB_RHORU Reviewed; 54 AA.
AC P0C190; P04125;
DT 04-APR-2006, integrated into UniProtKB/Swiss-Prot.
DT 04-APR-2006, sequence version 1.
DT 03-AUG-2022, entry version 63.
DE RecName: Full=Light-harvesting protein B-870 beta chain;
DE AltName: Full=Antenna pigment protein beta chain;
DE AltName: Full=LH-1;
OS Rhodospirillum rubrum.
OC Bacteria; Proteobacteria; Alphaproteobacteria; Rhodospirillales;
OC Rhodospirillaceae; Rhodospirillum.
OX NCBI_TaxID=1085;
RN [1]
RP PROTEIN SEQUENCE.
RC STRAIN=G-9+;
RX PubMed=6434396; DOI=10.1515/bchm2.1984.365.2.675;
RA Brunisholz R.A., Suter F., Zuber H.;
RT "The light-harvesting polypeptides of Rhodospirillum rubrum. I. The amino-
RT acid sequence of the second light-harvestng polypeptide B 880-beta (B 870-
RT beta) of Rhodospirillum rubrum S 1 and the carotenoidless mutant G-9+.";
RL Hoppe-Seyler's Z. Physiol. Chem. 365:675-688(1984).
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; A24206; A24206.
DR AlphaFoldDB; P0C190; -.
DR BMRB; P0C190; -.
DR SMR; P0C190; -.
DR EvolutionaryTrace; P0C190; -.
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..54
FT /note="Light-harvesting protein B-870 beta chain"
FT /id="PRO_0000001630"
FT TOPO_DOM 1..20
FT /note="Cytoplasmic"
FT /evidence="ECO:0000255"
FT TRANSMEM 21..43
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TOPO_DOM 44..54
FT /note="Periplasmic"
FT /evidence="ECO:0000255"
FT BINDING 19
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 BINDING 37
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 54 AA; 6078 MW; ECB1E228CBE93423 CRC64;
EVKQESLSGI TEGEAKEFHK IFTSSILVFF GVAAFAHLLV WIWRPWVPGP NGYS
