ID   SECB_RHOP2              Reviewed;         158 AA.
AC   Q2J350;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   07-MAR-2006, sequence version 1.
DT   25-MAY-2022, entry version 85.
DE   RecName: Full=Protein-export protein SecB {ECO:0000255|HAMAP-Rule:MF_00821};
GN   Name=secB {ECO:0000255|HAMAP-Rule:MF_00821}; OrderedLocusNames=RPB_0399;
OS   Rhodopseudomonas palustris (strain HaA2).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Bradyrhizobiaceae; Rhodopseudomonas.
OX   NCBI_TaxID=316058;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=HaA2;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA   Hammon N., Israni S., Pitluck S., Chain P., Malfatti S., Shin M.,
RA   Vergez L., Schmutz J., Larimer F., Land M., Hauser L., Pelletier D.A.,
RA   Kyrpides N., Anderson I., Oda Y., Harwood C.S., Richardson P.;
RT   "Complete sequence of Rhodopseudomonas palustris HaA2.";
RL   Submitted (JAN-2006) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: One of the proteins required for the normal export of
CC       preproteins out of the cell cytoplasm. It is a molecular chaperone that
CC       binds to a subset of precursor proteins, maintaining them in a
CC       translocation-competent state. It also specifically binds to its
CC       receptor SecA. {ECO:0000255|HAMAP-Rule:MF_00821}.
CC   -!- SUBUNIT: Homotetramer, a dimer of dimers. One homotetramer interacts
CC       with 1 SecA dimer. {ECO:0000255|HAMAP-Rule:MF_00821}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00821}.
CC   -!- SIMILARITY: Belongs to the SecB family. {ECO:0000255|HAMAP-
CC       Rule:MF_00821}.
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DR   EMBL; CP000250; ABD05110.1; -; Genomic_DNA.
DR   RefSeq; WP_011439300.1; NC_007778.1.
DR   AlphaFoldDB; Q2J350; -.
DR   SMR; Q2J350; -.
DR   STRING; 316058.RPB_0399; -.
DR   EnsemblBacteria; ABD05110; ABD05110; RPB_0399.
DR   KEGG; rpb:RPB_0399; -.
DR   eggNOG; COG1952; Bacteria.
DR   HOGENOM; CLU_111574_0_0_5; -.
DR   OMA; CPNVLFP; -.
DR   OrthoDB; 1624074at2; -.
DR   Proteomes; UP000008809; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0051082; F:unfolded protein binding; IEA:InterPro.
DR   GO; GO:0006457; P:protein folding; IEA:UniProtKB-UniRule.
DR   GO; GO:0051262; P:protein tetramerization; IEA:InterPro.
DR   GO; GO:0015031; P:protein transport; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.10.420.10; -; 1.
DR   HAMAP; MF_00821; SecB; 1.
DR   InterPro; IPR003708; SecB.
DR   InterPro; IPR035958; SecB-like_sf.
DR   PANTHER; PTHR36918; PTHR36918; 1.
DR   Pfam; PF02556; SecB; 1.
DR   PRINTS; PR01594; SECBCHAPRONE.
DR   SUPFAM; SSF54611; SSF54611; 1.
DR   TIGRFAMs; TIGR00809; secB; 1.
PE   3: Inferred from homology;
KW   Chaperone; Cytoplasm; Protein transport; Translocation; Transport.
FT   CHAIN           1..158
FT                   /note="Protein-export protein SecB"
FT                   /id="PRO_1000062504"
SQ   SEQUENCE   158 AA;  17132 MW;  041AD326FBDBC8E8 CRC64;
     MTNGNGTPPE AAAPPQLNVL AQYTKDLSFE NPNAPASLAP QQSQPAINIQ INVGANNLAE
     NEFEVTLSIE GKAESGSTVL FSFELAYAGV FRIVNVPQEN LHPLIMIECP RLLFPFAREI
     IASAVRDGGF PPLMLDPVDF VGLYRQNLER AQQQGQPS