ID Q12AQ6_POLSJ Unreviewed; 369 AA.
AC Q12AQ6;
DT 22-AUG-2006, integrated into UniProtKB/TrEMBL.
DT 22-AUG-2006, sequence version 1.
DT 27-MAR-2024, entry version 109.
DE RecName: Full=Protein-glutamate methylesterase/protein-glutamine glutaminase {ECO:0000256|HAMAP-Rule:MF_00099};
DE EC=3.1.1.61 {ECO:0000256|HAMAP-Rule:MF_00099};
DE EC=3.5.1.44 {ECO:0000256|HAMAP-Rule:MF_00099};
GN Name=cheB {ECO:0000256|HAMAP-Rule:MF_00099};
GN OrderedLocusNames=Bpro_2467 {ECO:0000313|EMBL:ABE44386.1};
OS Polaromonas sp. (strain JS666 / ATCC BAA-500).
OC Bacteria; Pseudomonadota; Betaproteobacteria; Burkholderiales;
OC Comamonadaceae; Polaromonas.
OX NCBI_TaxID=296591 {ECO:0000313|EMBL:ABE44386.1, ECO:0000313|Proteomes:UP000001983};
RN [1] {ECO:0000313|Proteomes:UP000001983}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=JS666 / ATCC BAA-500 {ECO:0000313|Proteomes:UP000001983};
RX PubMed=18723656; DOI=10.1128/AEM.00197-08;
RA Mattes T.E., Alexander A.K., Richardson P.M., Munk A.C., Han C.S.,
RA Stothard P., Coleman N.V.;
RT "The genome of Polaromonas sp. strain JS666: insights into the evolution of
RT a hydrocarbon- and xenobiotic-degrading bacterium, and features of
RT relevance to biotechnology.";
RL Appl. Environ. Microbiol. 74:6405-6416(2008).
CC -!- FUNCTION: Involved in chemotaxis. Part of a chemotaxis signal
CC transduction system that modulates chemotaxis in response to various
CC stimuli. Catalyzes the demethylation of specific methylglutamate
CC residues introduced into the chemoreceptors (methyl-accepting
CC chemotaxis proteins or MCP) by CheR. Also mediates the irreversible
CC deamidation of specific glutamine residues to glutamic acid.
CC {ECO:0000256|HAMAP-Rule:MF_00099}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + L-glutaminyl-[protein] = L-glutamyl-[protein] + NH4(+);
CC Xref=Rhea:RHEA:16441, Rhea:RHEA-COMP:10207, Rhea:RHEA-COMP:10208,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:28938, ChEBI:CHEBI:29973,
CC ChEBI:CHEBI:30011; EC=3.5.1.44; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_00099};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=[protein]-L-glutamate 5-O-methyl ester + H2O = H(+) + L-
CC glutamyl-[protein] + methanol; Xref=Rhea:RHEA:23236, Rhea:RHEA-
CC COMP:10208, Rhea:RHEA-COMP:10311, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:17790, ChEBI:CHEBI:29973,
CC ChEBI:CHEBI:82795; EC=3.1.1.61;
CC Evidence={ECO:0000256|ARBA:ARBA00000941, ECO:0000256|HAMAP-
CC Rule:MF_00099};
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00099}.
CC -!- DOMAIN: Contains a C-terminal catalytic domain, and an N-terminal
CC region which modulates catalytic activity. {ECO:0000256|HAMAP-
CC Rule:MF_00099}.
CC -!- SIMILARITY: Belongs to the CheB family. {ECO:0000256|HAMAP-
CC Rule:MF_00099}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_00099,
CC ECO:0000256|PROSITE-ProRule:PRU00169}.
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DR EMBL; CP000316; ABE44386.1; -; Genomic_DNA.
DR RefSeq; WP_011483384.1; NC_007948.1.
DR AlphaFoldDB; Q12AQ6; -.
DR STRING; 296591.Bpro_2467; -.
DR KEGG; pol:Bpro_2467; -.
DR eggNOG; COG2201; Bacteria.
DR HOGENOM; CLU_000445_51_0_4; -.
DR OrthoDB; 9793421at2; -.
DR Proteomes; UP000001983; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0000156; F:phosphorelay response regulator activity; IEA:InterPro.
DR GO; GO:0008984; F:protein-glutamate methylesterase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0050568; F:protein-glutamine glutaminase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0006935; P:chemotaxis; IEA:UniProtKB-UniRule.
DR CDD; cd16432; CheB_Rec; 1.
DR CDD; cd17541; REC_CheB-like; 1.
DR Gene3D; 3.40.50.2300; -; 1.
DR Gene3D; 3.40.50.180; Methylesterase CheB, C-terminal domain; 1.
DR HAMAP; MF_00099; CheB_chemtxs; 1.
DR InterPro; IPR008248; CheB-like.
DR InterPro; IPR035909; CheB_C.
DR InterPro; IPR011006; CheY-like_superfamily.
DR InterPro; IPR000673; Sig_transdc_resp-reg_Me-estase.
DR InterPro; IPR001789; Sig_transdc_resp-reg_receiver.
DR PANTHER; PTHR42872; PROTEIN-GLUTAMATE METHYLESTERASE/PROTEIN-GLUTAMINE GLUTAMINASE; 1.
DR PANTHER; PTHR42872:SF6; PROTEIN-GLUTAMATE METHYLESTERASE_PROTEIN-GLUTAMINE GLUTAMINASE; 1.
DR Pfam; PF01339; CheB_methylest; 1.
DR Pfam; PF00072; Response_reg; 1.
DR PIRSF; PIRSF000876; RR_chemtxs_CheB; 1.
DR SMART; SM00448; REC; 1.
DR SUPFAM; SSF52172; CheY-like; 1.
DR SUPFAM; SSF52738; Methylesterase CheB, C-terminal domain; 1.
DR PROSITE; PS50122; CHEB; 1.
DR PROSITE; PS50110; RESPONSE_REGULATORY; 1.
PE 3: Inferred from homology;
KW Chemotaxis {ECO:0000256|ARBA:ARBA00022500, ECO:0000256|HAMAP-
KW Rule:MF_00099};
KW Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_00099};
KW Hydrolase {ECO:0000256|ARBA:ARBA00022801, ECO:0000256|HAMAP-Rule:MF_00099};
KW Phosphoprotein {ECO:0000256|ARBA:ARBA00022553};
KW Reference proteome {ECO:0000313|Proteomes:UP000001983}.
FT DOMAIN 7..125
FT /note="Response regulatory"
FT /evidence="ECO:0000259|PROSITE:PS50110"
FT DOMAIN 166..355
FT /note="CheB-type methylesterase"
FT /evidence="ECO:0000259|PROSITE:PS50122"
FT ACT_SITE 177
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00099,
FT ECO:0000256|PROSITE-ProRule:PRU00050"
FT ACT_SITE 204
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00099,
FT ECO:0000256|PROSITE-ProRule:PRU00050"
FT ACT_SITE 297
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00099,
FT ECO:0000256|PROSITE-ProRule:PRU00050"
SQ SEQUENCE 369 AA; 38818 MW; 0F041A1F63777B3A CRC64;
MTDGKINVLV AEDSAIARVL LVRLLESDPL IRVVGAVGDG QAAIDFVNHN KPDVVLMGVH
MPRLDGFETT RRIMETQAVP IIICSASNNV TDIAVTFRAM EAGAIACIEK PFTGEQDDFE
AMAAHLLETV KLMSEVKVVR RTAHRRPAPL PSAYPPAPAA QRQRAPAQIK LVGIGASTGG
PLALQTILSG LPKDFPAPVL VVQHIAHGFL PGMAEWLNQT TTLQIHIASY GTTPLPGHVY
LAPDDFHMGI GTGGNIILTR EAPENHLRPA VSFLFRSLAE TYGPNALGVL LTGMGKDGAE
ELKAMMAKGA VTIAQDQESS VVHGMPGVAI ALGAATQVLP ADKIADALIA LVRQIDGDGD
GHGHGIAGD
//
