LHA2_CERS4
ID LHA2_CERS4 Reviewed; 54 AA.
AC Q3J144; P02946;
DT 21-JUL-1986, integrated into UniProtKB/Swiss-Prot.
DT 08-NOV-2005, sequence version 1.
DT 03-AUG-2022, entry version 82.
DE RecName: Full=Light-harvesting protein B-800/850 alpha chain;
DE AltName: Full=Antenna pigment protein alpha chain;
DE AltName: Full=LH-2;
GN Name=pucA; OrderedLocusNames=RHOS4_19220; ORFNames=RSP_6256;
OS Cereibacter sphaeroides (strain ATCC 17023 / DSM 158 / JCM 6121 / CCUG
OS 31486 / LMG 2827 / NBRC 12203 / NCIMB 8253 / ATH 2.4.1.) (Rhodobacter
OS sphaeroides).
OC Bacteria; Proteobacteria; Alphaproteobacteria; Rhodobacterales;
OC Rhodobacteraceae; Cereibacter.
OX NCBI_TaxID=272943;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=3036782; DOI=10.1128/jb.169.7.3268-3275.1987;
RA Kiley P.J., Kaplan S.;
RT "Cloning, DNA sequence, and expression of the Rhodobacter sphaeroides
RT light-harvesting B800-850-alpha and B800-850-beta genes.";
RL J. Bacteriol. 169:3268-3275(1987).
RN [2]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=1453956; DOI=10.1111/j.1365-2958.1992.tb01773.x;
RA Gibson L.C., McGlynn P., Chaudhri M., Hunter C.N.;
RT "A putative anaerobic coproporphyrinogen III oxidase in Rhodobacter
RT sphaeroides. II. Analysis of a region of the genome encoding hemF and the
RT puc operon.";
RL Mol. Microbiol. 6:3171-3186(1992).
RN [3]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=10648776; DOI=10.1093/nar/28.4.862;
RA Choudhary M., Kaplan S.;
RT "DNA sequence analysis of the photosynthesis region of Rhodobacter
RT sphaeroides 2.4.1.";
RL Nucleic Acids Res. 28:862-867(2000).
RN [4]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 17023 / DSM 158 / JCM 6121 / CCUG 31486 / LMG 2827 / NBRC 12203
RC / NCIMB 8253 / ATH 2.4.1.;
RA Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA Hammon N., Israni S., Pitluck S., Richardson P., Mackenzie C.,
RA Choudhary M., Larimer F., Hauser L.J., Land M., Donohue T.J., Kaplan S.;
RT "Complete sequence of chromosome 1 of Rhodobacter sphaeroides 2.4.1.";
RL Submitted (SEP-2005) to the EMBL/GenBank/DDBJ databases.
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; M16777; AAA26160.1; -; Genomic_DNA.
DR EMBL; X68796; CAA48700.1; -; Genomic_DNA.
DR EMBL; AF195122; AAF24246.1; -; Genomic_DNA.
DR EMBL; CP000143; ABA79490.1; -; Genomic_DNA.
DR PIR; A27087; A27087.
DR RefSeq; WP_002720480.1; NZ_CP030271.1.
DR RefSeq; YP_353391.1; NC_007493.2.
DR PDB; 7PBW; EM; 2.10 A; AA/AB/AC/AD/AE/AF/AG/AH/AI=1-50.
DR PDBsum; 7PBW; -.
DR AlphaFoldDB; Q3J144; -.
DR SMR; Q3J144; -.
DR STRING; 272943.RSP_6256; -.
DR EnsemblBacteria; ABA79490; ABA79490; RSP_6256.
DR GeneID; 57470634; -.
DR GeneID; 67447049; -.
DR KEGG; rsp:RSP_6256; -.
DR PATRIC; fig|272943.9.peg.2261; -.
DR eggNOG; ENOG503358U; Bacteria.
DR OMA; SHTTWFP; -.
DR PhylomeDB; Q3J144; -.
DR Proteomes; UP000002703; Chromosome 1.
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 3D-structure; Antenna complex; Bacteriochlorophyll; Cell inner membrane;
KW Cell membrane; Chlorophyll; Chromophore; Light-harvesting polypeptide;
KW Magnesium; Membrane; Metal-binding; Reference proteome; Transmembrane;
KW Transmembrane helix.
FT CHAIN 1..54
FT /note="Light-harvesting protein B-800/850 alpha chain"
FT /id="PRO_0000099804"
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..54
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"
SQ SEQUENCE 54 AA; 5599 MW; 50495C5332E23220 CRC64;
MTNGKIWLVV KPTVGVPLFL SAAVIASVVI HAAVLTTTTW LPAYYQGSAA VAAE
