RCEM_CHLAA
ID RCEM_CHLAA Reviewed; 307 AA.
AC P09438; A9WII3;
DT 01-JUL-1989, integrated into UniProtKB/Swiss-Prot.
DT 23-JAN-2007, sequence version 2.
DT 03-AUG-2022, entry version 138.
DE RecName: Full=Reaction center protein M chain;
DE AltName: Full=Photosynthetic reaction center M subunit;
GN Name=pufM; OrderedLocusNames=Caur_1051;
OS Chloroflexus aurantiacus (strain ATCC 29366 / DSM 635 / J-10-fl).
OC Bacteria; Chloroflexi; Chloroflexia; Chloroflexales; Chloroflexineae;
OC Chloroflexaceae; Chloroflexus.
OX NCBI_TaxID=324602;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND PARTIAL PROTEIN SEQUENCE.
RX PubMed=3288502; DOI=10.1016/0014-5793(88)80770-1;
RA Ovchinnikov Y.A., Abdulaev N.G., Shmuckler B.E., Zargarov A.A.,
RA Kutuzov M.A., Telezhinskaya I.N., Levina N.B., Zolotarev A.S.;
RT "Photosynthetic reaction centre of Chloroflexus aurantiacus. Primary
RT structure of M-subunit.";
RL FEBS Lett. 232:364-368(1988).
RN [2]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=2651125; DOI=10.1111/j.1432-1033.1989.tb14617.x;
RA Shiozawa J.A., Lottspeich F., Oesterhelt D., Feick R.;
RT "The primary structure of the Chloroflexus aurantiacus reaction-center
RT polypeptides.";
RL Eur. J. Biochem. 180:75-84(1989).
RN [3]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 29366 / DSM 635 / J-10-fl;
RX PubMed=21714912; DOI=10.1186/1471-2164-12-334;
RA Tang K.H., Barry K., Chertkov O., Dalin E., Han C.S., Hauser L.J.,
RA Honchak B.M., Karbach L.E., Land M.L., Lapidus A., Larimer F.W.,
RA Mikhailova N., Pitluck S., Pierson B.K., Blankenship R.E.;
RT "Complete genome sequence of the filamentous anoxygenic phototrophic
RT bacterium Chloroflexus aurantiacus.";
RL BMC Genomics 12:334-334(2011).
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: Cell membrane; Multi-pass membrane protein.
CC -!- SIMILARITY: Belongs to the reaction center PufL/M/PsbA/D family.
CC {ECO:0000305}.
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DR EMBL; X07847; CAA30694.1; -; Genomic_DNA.
DR EMBL; X14979; CAA33103.1; -; Genomic_DNA.
DR EMBL; CP000909; ABY34283.1; -; Genomic_DNA.
DR PIR; S03567; WNJXM.
DR RefSeq; WP_012256939.1; NC_010175.1.
DR RefSeq; YP_001634672.1; NC_010175.1.
DR AlphaFoldDB; P09438; -.
DR SMR; P09438; -.
DR STRING; 324602.Caur_1051; -.
DR PRIDE; P09438; -.
DR EnsemblBacteria; ABY34283; ABY34283; Caur_1051.
DR KEGG; cau:Caur_1051; -.
DR PATRIC; fig|324602.8.peg.1198; -.
DR eggNOG; ENOG502Z87P; Bacteria.
DR HOGENOM; CLU_078782_0_0_0; -.
DR InParanoid; P09438; -.
DR OMA; IFPHLDW; -.
DR Proteomes; UP000002008; Chromosome.
DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR GO; GO:0009523; C:photosystem II; IBA:GO_Central.
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:0009772; P:photosynthetic electron transport in photosystem II; IEA:InterPro.
DR CDD; cd09291; Photo-RC_M; 1.
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 1: Evidence at protein level;
KW Bacteriochlorophyll; Cell membrane; Chlorophyll; Chromophore;
KW Direct protein sequencing; Electron transport; Iron; Magnesium; Membrane;
KW Metal-binding; Photosynthesis; Reaction center; Reference proteome;
KW Transmembrane; Transmembrane helix; Transport.
FT INIT_MET 1
FT /note="Removed"
FT CHAIN 2..307
FT /note="Reaction center protein M chain"
FT /id="PRO_0000090411"
FT TRANSMEM 45..69
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TRANSMEM 103..123
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TRANSMEM 133..153
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TRANSMEM 196..216
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TRANSMEM 257..277
FT /note="Helical"
FT /evidence="ECO:0000255"
FT BINDING 192
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 BINDING 209
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT BINDING 236
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT BINDING 256
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT MOD_RES 2
FT /note="Blocked amino end (Ala)"
FT /evidence="ECO:0000269|PubMed:3288502"
SQ SEQUENCE 307 AA; 34967 MW; 2882FCF86C9F1451 CRC64;
MATINMTPGD LELGRDRGRI GKPIEIPLLE NFGFDSQLGP FYLGFWNAVA YITGGIFTFI
WLMVMFAQVN YNPVAFAKYF VVLQIDPPSS RYGLSFPPLN EGGWWLIATF FLTVSIFAWY
MHIYTRAKAL GIKPYLAYGF TGAIALYLVI YIIRPVWMGD WSEAPAHGIK ALLDWTNNVS
VRYGNFYYNP FHMLSIFFLL GSTLLLAMHA GTIWALEKYA AHEEWNEIQA PGTGTERAQL
FWRWCMGFNA NAYSIHLWAF WFAWLCGITG ALGVFFSMPD FVNNWFQWGI EAGINYPQGP
TPPVSLP
