ID   PUFX_CERS4              Reviewed;          82 AA.
AC   P13402; Q3J1A7;
DT   01-JAN-1990, integrated into UniProtKB/Swiss-Prot.
DT   01-JAN-1990, sequence version 1.
DT   25-MAY-2022, entry version 110.
DE   RecName: Full=Intrinsic membrane protein PufX;
GN   Name=pufX; OrderedLocusNames=RHOS4_18590; ORFNames=RSP_0255;
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=2808428; DOI=10.1016/s0021-9258(19)47309-2;
RA   Lee J.K., Dehoff B.S., Donohue T.J., Gumport R.I., Kaplan S.;
RT   "Transcriptional analysis of puf operon expression in Rhodobacter
RT   sphaeroides 2.4.1 and an intercistronic transcription terminator mutant.";
RL   J. Biol. Chem. 264:19354-19365(1989).
RN   [2]
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   [3]
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.
RN   [4]
RP   SUBCELLULAR LOCATION, AND POSSIBLE FUNCTION.
RX   PubMed=1639055; DOI=10.1002/j.1460-2075.1992.tb05345.x;
RA   Farchaus J.W., Barz W.P., Gruenberg H., Oesterhelt D.;
RT   "Studies on the expression of the pufX polypeptide and its requirement for
RT   photoheterotrophic growth in Rhodobacter sphaeroides.";
RL   EMBO J. 11:2779-2788(1992).
CC   -!- FUNCTION: Associated with the reaction center - light-harvesting
CC       complex I. May play a critical role in facilitating the interaction
CC       between this complex and other components required for light-driven
CC       cyclic electron transfer.
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000269|PubMed:1639055}.
CC   -!- SIMILARITY: Belongs to the PufX family. {ECO:0000305}.
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DR   EMBL; J05098; AAA26129.1; -; Genomic_DNA.
DR   EMBL; AF195122; AAF24306.1; -; Genomic_DNA.
DR   EMBL; CP000143; ABA79427.1; -; Genomic_DNA.
DR   PIR; A34449; A34449.
DR   RefSeq; WP_002720419.1; NZ_CP030271.1.
DR   RefSeq; YP_353328.1; NC_007493.2.
DR   PDB; 2DW3; NMR; -; A=2-72.
DR   PDB; 2ITA; NMR; -; A=1-70.
DR   PDB; 2NRG; NMR; -; A=1-82.
DR   PDB; 4V9G; X-ray; 7.78 A; AB/BB=1-82.
DR   PDB; 7PIL; EM; 2.50 A; X=15-69.
DR   PDBsum; 2DW3; -.
DR   PDBsum; 2ITA; -.
DR   PDBsum; 2NRG; -.
DR   PDBsum; 4V9G; -.
DR   PDBsum; 7PIL; -.
DR   AlphaFoldDB; P13402; -.
DR   BMRB; P13402; -.
DR   SMR; P13402; -.
DR   STRING; 272943.RSP_0255; -.
DR   EnsemblBacteria; ABA79427; ABA79427; RSP_0255.
DR   GeneID; 57470573; -.
DR   GeneID; 67446988; -.
DR   KEGG; rsp:RSP_0255; -.
DR   PATRIC; fig|272943.9.peg.2198; -.
DR   OMA; WAGAVFF; -.
DR   EvolutionaryTrace; P13402; -.
DR   Proteomes; UP000002703; Chromosome 1.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-KW.
DR   InterPro; IPR020169; Intrinsic_membrane_PufX.
DR   Pfam; PF11511; RhodobacterPufX; 1.
PE   1: Evidence at protein level;
KW   3D-structure; Cell membrane; Membrane; Photosynthesis; Reference proteome.
FT   CHAIN           1..82
FT                   /note="Intrinsic membrane protein PufX"
FT                   /id="PRO_0000097105"
SQ   SEQUENCE   82 AA;  9053 MW;  E8E4F6316269E6C2 CRC64;
     MADKTIFNDH LNTNPKTNLR LWVAFQMMKG AGWAGGVFFG TLLLIGFFRV VGRMLPIQEN
     QAPAPNITGA LETGIELIKH LV