ID   PSPB_ECOLI              Reviewed;          74 AA.
AC   P0AFM9; P23854;
DT   20-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT   20-DEC-2005, sequence version 1.
DT   10-JUN-2026, entry version 121.
DE   RecName: Full=Phage shock protein B;
GN   Name=pspB; OrderedLocusNames=b1305, JW1298;
OS   Escherichia coli (strain K12).
OC   Bacteria; Pseudomonadati; Pseudomonadota; Gammaproteobacteria;
OC   Enterobacterales; Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=83333;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA], FUNCTION, AND INDUCTION.
RC   STRAIN=K12;
RX   PubMed=1712397; DOI=10.1016/0022-2836(91)90379-k;
RA   Brissette J.L., Weiner L., Ripmaster T.L., Model P.;
RT   "Characterization and sequence of the Escherichia coli stress-induced psp
RT   operon.";
RL   J. Mol. Biol. 220:35-48(1991).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=K12 / W3110 / ATCC 27325 / DSM 5911;
RX   PubMed=9097039; DOI=10.1093/dnares/3.6.363;
RA   Aiba H., Baba T., Fujita K., Hayashi K., Inada T., Isono K., Itoh T.,
RA   Kasai H., Kashimoto K., Kimura S., Kitakawa M., Kitagawa M., Makino K.,
RA   Miki T., Mizobuchi K., Mori H., Mori T., Motomura K., Nakade S.,
RA   Nakamura Y., Nashimoto H., Nishio Y., Oshima T., Saito N., Sampei G.,
RA   Seki Y., Sivasundaram S., Tagami H., Takeda J., Takemoto K., Takeuchi Y.,
RA   Wada C., Yamamoto Y., Horiuchi T.;
RT   "A 570-kb DNA sequence of the Escherichia coli K-12 genome corresponding to
RT   the 28.0-40.1 min region on the linkage map.";
RL   DNA Res. 3:363-377(1996).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=K12 / MG1655 / ATCC 47076;
RX   PubMed=9278503; DOI=10.1126/science.277.5331.1453;
RA   Blattner F.R., Plunkett G. III, Bloch C.A., Perna N.T., Burland V.,
RA   Riley M., Collado-Vides J., Glasner J.D., Rode C.K., Mayhew G.F.,
RA   Gregor J., Davis N.W., Kirkpatrick H.A., Goeden M.A., Rose D.J., Mau B.,
RA   Shao Y.;
RT   "The complete genome sequence of Escherichia coli K-12.";
RL   Science 277:1453-1462(1997).
RN   [4]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=K12 / W3110 / ATCC 27325 / DSM 5911;
RX   PubMed=16738553; DOI=10.1038/msb4100049;
RA   Hayashi K., Morooka N., Yamamoto Y., Fujita K., Isono K., Choi S.,
RA   Ohtsubo E., Baba T., Wanner B.L., Mori H., Horiuchi T.;
RT   "Highly accurate genome sequences of Escherichia coli K-12 strains MG1655
RT   and W3110.";
RL   Mol. Syst. Biol. 2:E1-E5(2006).
RN   [5]
RP   INTERACTION WITH PSPA.
RC   STRAIN=K12;
RX   PubMed=12562786; DOI=10.1128/jb.185.4.1174-1180.2003;
RA   Adams H., Teertstra W., Demmers J., Boesten R., Tommassen J.;
RT   "Interactions between phage-shock proteins in Escherichia coli.";
RL   J. Bacteriol. 185:1174-1180(2003).
CC   -!- FUNCTION: The phage shock protein (psp) operon (pspABCDE) may play a
CC       significant role in the competition for survival under nutrient- or
CC       energy-limited conditions. PspB is involved in transcription
CC       regulation. {ECO:0000269|PubMed:1712397}.
CC   -!- SUBUNIT: Interacts with PspA; could bind PspA only in the presence of
CC       PspC. {ECO:0000269|PubMed:12562786}.
CC   -!- INTERACTION:
CC       P0AFM9; P0AFN2: pspC; NbExp=5; IntAct=EBI-6408513, EBI-1134561;
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane; Single-pass membrane
CC       protein.
CC   -!- INDUCTION: By heat, ethanol, osmotic shock and infection by filamentous
CC       bacteriophages. {ECO:0000269|PubMed:1712397}.
CC   -!- SIMILARITY: Belongs to the PspB family. {ECO:0000305}.
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DR   EMBL; X57560; CAA40790.1; -; Genomic_DNA.
DR   EMBL; U00096; AAC74387.1; -; Genomic_DNA.
DR   EMBL; AP009048; BAA14874.1; -; Genomic_DNA.
DR   PIR; S17122; S17122.
DR   RefSeq; NP_415821.1; NC_000913.3.
DR   RefSeq; WP_001274963.1; NZ_CP009789.1.
DR   AlphaFoldDB; P0AFM9; -.
DR   SMR; P0AFM9; -.
DR   BioGRID; 4263233; 301.
DR   ComplexPortal; CPX-5892; PspBC inner membrane stress response complex.
DR   DIP; DIP-10588N; -.
DR   FunCoup; P0AFM9; 27.
DR   IntAct; P0AFM9; 3.
DR   STRING; 511145.b1305; -.
DR   jPOST; P0AFM9; -.
DR   PaxDb; 511145-b1305; -.
DR   EnsemblBacteria; AAC74387; AAC74387; b1305.
DR   GeneID; 75171430; -.
DR   GeneID; 75203420; -.
DR   GeneID; 945893; -.
DR   KEGG; ecj:JW1298; -.
DR   KEGG; eco:b1305; -.
DR   KEGG; ecoc:C3026_07655; -.
DR   PATRIC; fig|1411691.4.peg.974; -.
DR   EchoBASE; EB0770; -.
DR   eggNOG; ENOG5032YI2; Bacteria.
DR   HOGENOM; CLU_178570_0_0_6; -.
DR   InParanoid; P0AFM9; -.
DR   OMA; LWLHYSQ; -.
DR   PhylomeDB; P0AFM9; -.
DR   BioCyc; EcoCyc:EG10777-MONOMER; -.
DR   PRO; PR:P0AFM9; -.
DR   Proteomes; UP000000625; Chromosome.
DR   AbasyAtlas; P0AFM9; -.
DR   GO; GO:0005886; C:plasma membrane; NAS:ComplexPortal.
DR   GO; GO:0009271; P:phage shock; IEA:InterPro.
DR   GO; GO:0080135; P:regulation of cellular response to stress; NAS:ComplexPortal.
DR   GO; GO:0006355; P:regulation of DNA-templated transcription; IEA:InterPro.
DR   InterPro; IPR009554; Phageshock_PspB.
DR   NCBIfam; TIGR02976; phageshock_pspB; 1.
DR   NCBIfam; NF006993; PRK09458.1; 1.
DR   Pfam; PF06667; PspB; 1.
PE   1: Evidence at protein level;
KW   Cell inner membrane; Cell membrane; Coiled coil; Membrane;
KW   Reference proteome; Stress response; Transmembrane; Transmembrane helix.
FT   CHAIN           1..74
FT                   /note="Phage shock protein B"
FT                   /id="PRO_0000097071"
FT   TRANSMEM        4..24
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   COILED          33..68
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   74 AA;  8763 MW;  22B82DF367099A1B CRC64;
     MSALFLAIPL TIFVLFVLPI WLWLHYSNRS GRSELSQSEQ QRLAQLADEA KRMRERIQAL
     ESILDAEHPN WRDR
//