LHB_RHORT
ID LHB_RHORT Reviewed; 69 AA.
AC Q2RQ23; P04125;
DT 04-APR-2006, integrated into UniProtKB/Swiss-Prot.
DT 24-JAN-2006, sequence version 1.
DT 03-AUG-2022, entry version 90.
DE RecName: Full=Light-harvesting protein B-870 beta chain;
DE AltName: Full=Antenna pigment protein beta chain;
DE AltName: Full=LH-1;
DE Flags: Precursor;
GN OrderedLocusNames=Rru_A2977;
OS Rhodospirillum rubrum (strain ATCC 11170 / ATH 1.1.1 / DSM 467 / LMG 4362 /
OS NCIMB 8255 / S1).
OC Bacteria; Proteobacteria; Alphaproteobacteria; Rhodospirillales;
OC Rhodospirillaceae; Rhodospirillum.
OX NCBI_TaxID=269796;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=3001063; DOI=10.1016/s0021-9258(17)42434-3;
RA Berard J., Belanger G., Corriveau P., Gingras G.;
RT "Molecular cloning and sequence of the B880 holochrome gene from
RT Rhodospirillum rubrum.";
RL J. Biol. Chem. 261:82-87(1986).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 11170 / ATH 1.1.1 / DSM 467 / LMG 4362 / NCIMB 8255 / S1;
RX PubMed=21886856; DOI=10.4056/sigs.1804360;
RA Munk A.C., Copeland A., Lucas S., Lapidus A., Del Rio T.G., Barry K.,
RA Detter J.C., Hammon N., Israni S., Pitluck S., Brettin T., Bruce D.,
RA Han C., Tapia R., Gilna P., Schmutz J., Larimer F., Land M., Kyrpides N.C.,
RA Mavromatis K., Richardson P., Rohde M., Goeker M., Klenk H.P., Zhang Y.,
RA Roberts G.P., Reslewic S., Schwartz D.C.;
RT "Complete genome sequence of Rhodospirillum rubrum type strain (S1).";
RL Stand. Genomic Sci. 4:293-302(2011).
RN [3]
RP PROTEIN SEQUENCE OF 3-56.
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 EMBL; M11801; AAA26461.1; -; Genomic_DNA.
DR EMBL; CP000230; ABC23772.1; -; Genomic_DNA.
DR PIR; A24206; A24206.
DR RefSeq; WP_011390725.1; NC_007643.1.
DR RefSeq; YP_428059.1; NC_007643.1.
DR PDB; 1WRG; NMR; -; A=2-56.
DR PDB; 7EQD; EM; 2.76 A; 0/2/4/6/8/B/E/G/J/N/P/R/T/V/X/Z=2-56.
DR PDB; 7OY8; EM; 2.50 A; 1/3/5/7/9/I/K/O/Q/S/U/W/Y/d/m/n=3-56.
DR PDBsum; 1WRG; -.
DR PDBsum; 7EQD; -.
DR PDBsum; 7OY8; -.
DR AlphaFoldDB; Q2RQ23; -.
DR BMRB; Q2RQ23; -.
DR SMR; Q2RQ23; -.
DR STRING; 269796.Rru_A2977; -.
DR EnsemblBacteria; ABC23772; ABC23772; Rru_A2977.
DR KEGG; rru:Rru_A2977; -.
DR PATRIC; fig|269796.9.peg.3086; -.
DR eggNOG; ENOG50333MC; Bacteria.
DR HOGENOM; CLU_199082_0_0_5; -.
DR OMA; EFHSIFM; -.
DR OrthoDB; 2043694at2; -.
DR PhylomeDB; Q2RQ23; -.
DR EvolutionaryTrace; Q2RQ23; -.
DR Proteomes; UP000001929; Chromosome.
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 PRINTS; PR00674; LIGHTHARVSTB.
DR SUPFAM; SSF56918; SSF56918; 1.
DR PROSITE; PS00969; ANTENNA_COMP_BETA; 1.
PE 1: Evidence at protein level;
KW 3D-structure; Antenna complex; Bacteriochlorophyll; Cell inner membrane;
KW Cell membrane; Chlorophyll; Chromophore; Direct protein sequencing;
KW Light-harvesting polypeptide; Magnesium; Membrane; Metal-binding;
KW Reference proteome; Transmembrane; Transmembrane helix.
FT PROPEP 1..2
FT /evidence="ECO:0000269|PubMed:6434396"
FT /id="PRO_0000231667"
FT CHAIN 3..56
FT /note="Light-harvesting protein B-870 beta chain"
FT /id="PRO_0000231668"
FT PROPEP 57..69
FT /id="PRO_0000231669"
FT TOPO_DOM 3..22
FT /note="Cytoplasmic"
FT /evidence="ECO:0000255"
FT TRANSMEM 23..45
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TOPO_DOM 46..56
FT /note="Periplasmic"
FT /evidence="ECO:0000255"
FT BINDING 21
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 39
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 HELIX 14..45
FT /evidence="ECO:0007829|PDB:7OY8"
FT STRAND 46..49
FT /evidence="ECO:0007829|PDB:1WRG"
SQ SEQUENCE 69 AA; 7716 MW; D4C09D57FFF49F4B CRC64;
MAEVKQESLS GITEGEAKEF HKIFTSSILV FFGVAAFAHL LVWIWRPWVP GPNGYSALET
LTQTLTYLS
