HRCQB_PSESY
ID HRCQB_PSESY Reviewed; 133 AA.
AC Q60235;
DT 29-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT 01-NOV-1996, sequence version 1.
DT 25-MAY-2022, entry version 75.
DE RecName: Full=Type III secretion protein HrcQb;
GN Name=hrcQb; Synonyms=hrpU;
OS Pseudomonas syringae pv. syringae.
OC Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales;
OC Pseudomonadaceae; Pseudomonas; Pseudomonas syringae.
OX NCBI_TaxID=321;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC STRAIN=Pss61;
RX PubMed=7579617; DOI=10.1094/mpmi-8-0733;
RA Huang H.-C., Lin R.-H., Chang C.-J., Collmer A., Deng W.-L.;
RT "The complete hrp gene cluster of Pseudomonas syringae pv. syringae 61
RT includes two blocks of genes required for harpinPss secretion that are
RT arranged colinearly with Yersinia ysc homologs.";
RL Mol. Plant Microbe Interact. 8:733-746(1995).
RN [2]
RP FUNCTION.
RC STRAIN=Pss61;
RX PubMed=9190801; DOI=10.1128/jb.179.12.3866-3874.1997;
RA Charkowski A.O., Huang H.-C., Collmer A.;
RT "Altered localization of HrpZ in Pseudomonas syringae pv. syringae hrp
RT mutants suggests that different components of the type III secretion
RT pathway control protein translocation across the inner and outer membranes
RT of Gram-negative bacteria.";
RL J. Bacteriol. 179:3866-3874(1997).
RN [3]
RP REGULATION.
RC STRAIN=Pss61;
RX PubMed=9721292; DOI=10.1128/jb.180.17.4532-4537.1998;
RA Preston G., Deng W.-L., Huang H.-C., Collmer A.;
RT "Negative regulation of hrp genes in Pseudomonas syringae by HrpV.";
RL J. Bacteriol. 180:4532-4537(1998).
CC -!- FUNCTION: Component of the type III secretion system, which is required
CC for effector protein delivery, parasitism, and pathogenicity. Probably
CC participates in the formation of a C-ring-like assembly along with
CC HrcQa (By similarity). {ECO:0000250, ECO:0000269|PubMed:9190801}.
CC -!- SUBUNIT: Homotetramer. The four monomers assemble into two tightly
CC bound homodimers. Interacts with HrcQa (By similarity). {ECO:0000250}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}. Note=Or loosely
CC associated with a membrane component, probably HrcQa. {ECO:0000250}.
CC -!- INDUCTION: Negatively regulated by HrpV.
CC -!- DOMAIN: The HrcQb-C domain interacts with the HrcQa C-terminal domain.
CC {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the FliN/MopA/SpaO family. {ECO:0000305}.
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DR EMBL; U25812; AAB05074.1; -; Genomic_DNA.
DR AlphaFoldDB; Q60235; -.
DR SMR; Q60235; -.
DR GO; GO:0009425; C:bacterial-type flagellum basal body; IEA:InterPro.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0003774; F:cytoskeletal motor activity; IEA:InterPro.
DR GO; GO:0071973; P:bacterial-type flagellum-dependent cell motility; IEA:InterPro.
DR GO; GO:0006935; P:chemotaxis; IEA:InterPro.
DR Gene3D; 2.30.330.10; -; 1.
DR InterPro; IPR001543; FliN-like_C.
DR InterPro; IPR001172; FliN_T3SS_HrcQb.
DR InterPro; IPR036429; SpoA-like_sf.
DR Pfam; PF01052; FliMN_C; 1.
DR PRINTS; PR00956; FLGMOTORFLIN.
DR SUPFAM; SSF101801; SSF101801; 1.
PE 2: Evidence at transcript level;
KW Cytoplasm; Virulence.
FT CHAIN 1..133
FT /note="Type III secretion protein HrcQb"
FT /id="PRO_0000184136"
FT REGION 1..60
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 1..22
FT /note="Acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 23..60
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ SEQUENCE 133 AA; 14793 MW; 1D928E675D5B2FF6 CRC64;
MSTEDLYQDD VEMLDDYEEP VPEQADQQQR DDEYAEHAFG YADSDAEHEE QSGDHHESPM
LDSLELDLTL RCGDLRLTLA ELRRLDAGSI LEVSGIAPGH ATLCHGEQVV AEGELVDVEG
RLGLQITRLV ARS
