RCEM_ROSDO
ID RCEM_ROSDO Reviewed; 330 AA.
AC P26279; Q16DV5;
DT 01-MAY-1992, integrated into UniProtKB/Swiss-Prot.
DT 01-MAY-1992, sequence version 1.
DT 03-AUG-2022, entry version 143.
DE RecName: Full=Reaction center protein M chain;
DE AltName: Full=Photosynthetic reaction center M subunit;
GN Name=pufM; OrderedLocusNames=RD1_0103;
OS Roseobacter denitrificans (strain ATCC 33942 / OCh 114) (Erythrobacter sp.
OS (strain OCh 114)) (Roseobacter denitrificans).
OC Bacteria; Proteobacteria; Alphaproteobacteria; Rhodobacterales;
OC Roseobacteraceae; Roseobacter.
OX NCBI_TaxID=375451;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=1787796; DOI=10.1111/j.1365-2958.1991.tb00792.x;
RA Liebetanz R., Hornberger U., Drews G.;
RT "Organization of the genes coding for the reaction-centre L and M subunits
RT and B870 antenna polypeptides alpha and beta from the aerobic
RT photosynthetic bacterium Erythrobacter species OCH114.";
RL Mol. Microbiol. 5:1459-1468(1991).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 33942 / OCh 114;
RX PubMed=17098896; DOI=10.1128/jb.01390-06;
RA Swingley W.D., Sadekar S., Mastrian S.D., Matthies H.J., Hao J., Ramos H.,
RA Acharya C.R., Conrad A.L., Taylor H.L., Dejesa L.C., Shah M.K.,
RA O'Huallachain M.E., Lince M.T., Blankenship R.E., Beatty J.T.,
RA Touchman J.W.;
RT "The complete genome sequence of Roseobacter denitrificans reveals a
RT mixotrophic rather than photosynthetic metabolism.";
RL J. Bacteriol. 189:683-690(2007).
CC -!- FUNCTION: The reaction center is a membrane-bound complex that mediates
CC the initial photochemical event in the electron transfer process of
CC photosynthesis.
CC -!- SUBUNIT: Reaction center is composed of four bacteriochlorophylls, two
CC bacteriopheophytins, two ubiquinones, one iron, and two highly
CC hydrophobic polypeptide chains (designated L and M).
CC -!- SUBCELLULAR LOCATION: Cellular chromatophore membrane {ECO:0000250};
CC Multi-pass membrane protein {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the reaction center PufL/M/PsbA/D family.
CC {ECO:0000305}.
CC -!- SEQUENCE CAUTION:
CC Sequence=ABG29838.1; Type=Erroneous initiation; Evidence={ECO:0000305};
CC Sequence=CAA40819.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR EMBL; X57597; CAA40819.1; ALT_INIT; Genomic_DNA.
DR EMBL; CP000362; ABG29838.1; ALT_INIT; Genomic_DNA.
DR AlphaFoldDB; P26279; -.
DR SMR; P26279; -.
DR STRING; 375451.RD1_0103; -.
DR EnsemblBacteria; ABG29838; ABG29838; RD1_0103.
DR KEGG; rde:RD1_0103; -.
DR eggNOG; ENOG502Z87P; Bacteria.
DR HOGENOM; CLU_078782_0_0_5; -.
DR OMA; IFPHLDW; -.
DR Proteomes; UP000007029; Chromosome.
DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR GO; GO:0030077; C:plasma membrane light-harvesting complex; IEA:InterPro.
DR GO; GO:0042717; C:plasma membrane-derived chromatophore membrane; IEA:UniProtKB-SubCell.
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:0009772; P:photosynthetic electron transport in photosystem II; IEA:InterPro.
DR Gene3D; 1.20.85.10; -; 2.
DR InterPro; IPR036854; Photo_II_D1/D2_sf.
DR InterPro; IPR000484; Photo_RC_L/M.
DR InterPro; IPR005781; Photo_RC_M.
DR Pfam; PF00124; Photo_RC; 1.
DR PRINTS; PR00256; REACTNCENTRE.
DR SUPFAM; SSF81483; SSF81483; 1.
DR TIGRFAMs; TIGR01115; pufM; 1.
DR PROSITE; PS00244; REACTION_CENTER; 1.
PE 3: Inferred from homology;
KW Bacteriochlorophyll; Chlorophyll; Chromophore; Electron transport; Iron;
KW Magnesium; Membrane; Metal-binding; Photosynthesis; Reaction center;
KW Reference proteome; Transmembrane; Transmembrane helix; Transport.
FT CHAIN 1..330
FT /note="Reaction center protein M chain"
FT /id="PRO_0000090413"
FT TRANSMEM 57..83
FT /note="Helical"
FT /evidence="ECO:0000250"
FT TRANSMEM 115..144
FT /note="Helical"
FT /evidence="ECO:0000250"
FT TRANSMEM 147..172
FT /note="Helical"
FT /evidence="ECO:0000250"
FT TRANSMEM 202..230
FT /note="Helical"
FT /evidence="ECO:0000250"
FT TRANSMEM 264..290
FT /note="Helical"
FT /evidence="ECO:0000250"
FT BINDING 185
FT /ligand="(7R,8Z)-bacteriochlorophyll b"
FT /ligand_id="ChEBI:CHEBI:30034"
FT /ligand_part="Mg"
FT /ligand_part_id="ChEBI:CHEBI:25107"
FT /note="axial binding residue"
FT /evidence="ECO:0000250"
FT BINDING 205
FT /ligand="(7R,8Z)-bacteriochlorophyll b"
FT /ligand_id="ChEBI:CHEBI:30034"
FT /ligand_part="Mg"
FT /ligand_part_id="ChEBI:CHEBI:25107"
FT /note="axial binding residue"
FT /evidence="ECO:0000250"
FT BINDING 222
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /evidence="ECO:0000250"
FT BINDING 237
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /evidence="ECO:0000250"
FT BINDING 255
FT /ligand="a ubiquinone"
FT /ligand_id="ChEBI:CHEBI:16389"
FT /evidence="ECO:0000250"
FT BINDING 269
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /evidence="ECO:0000250"
SQ SEQUENCE 330 AA; 37671 MW; C5C216F2281A0951 CRC64;
MYPEYQNIFT QVQVRGTPEM GMDDAGNNMM EERVGKPFFS TLAGLFGNGQ IGPYYFGWTS
IVAFGTGIAW FVIVGFNMLA QVGWSIPQFI RQLFWLALEP PSPEYGLSMP PLNDGGWYII
ASFFLLVSVM TWLLRAYLLA EQHKMGKHIF WGFAAAVWLF LVLGLFRPIL MGSWSEAVPY
GIFPHLDWTT AFSIRYGNLY YNPFHCLSIV FLYGSVLLFC MHGGTILAVT RYGGDRELEQ
IYDRGTATER AALFWRWTMG FNATMEGIHR WAWWFAVLTP ITGGIGILLT GTVVDNWFIW
AQEHHFAPMY DGSYGYEDYG SYEAFIGKEN
