ID CHEB2_PSEU2 Reviewed; 336 AA.
AC Q4ZWW3;
DT 07-MAR-2006, integrated into UniProtKB/Swiss-Prot.
DT 07-JUN-2005, sequence version 1.
DT 27-MAR-2024, entry version 110.
DE RecName: Full=Protein-glutamate methylesterase/protein-glutamine glutaminase 2 {ECO:0000255|HAMAP-Rule:MF_00099};
DE EC=3.1.1.61 {ECO:0000255|HAMAP-Rule:MF_00099};
DE EC=3.5.1.44 {ECO:0000255|HAMAP-Rule:MF_00099};
GN Name=cheB2 {ECO:0000255|HAMAP-Rule:MF_00099}; OrderedLocusNames=Psyr_1308;
OS Pseudomonas syringae pv. syringae (strain B728a).
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Pseudomonadales;
OC Pseudomonadaceae; Pseudomonas; Pseudomonas syringae.
OX NCBI_TaxID=205918;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=B728a;
RX PubMed=16043691; DOI=10.1073/pnas.0504930102;
RA Feil H., Feil W.S., Chain P., Larimer F., Dibartolo G., Copeland A.,
RA Lykidis A., Trong S., Nolan M., Goltsman E., Thiel J., Malfatti S.,
RA Loper J.E., Lapidus A., Detter J.C., Land M., Richardson P.M.,
RA Kyrpides N.C., Ivanova N., Lindow S.E.;
RT "Comparison of the complete genome sequences of Pseudomonas syringae pv.
RT syringae B728a and pv. tomato DC3000.";
RL Proc. Natl. Acad. Sci. U.S.A. 102:11064-11069(2005).
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:0000255|HAMAP-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; Evidence={ECO:0000255|HAMAP-
CC 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:0000255|HAMAP-
CC Rule:MF_00099};
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00099}.
CC -!- DOMAIN: Contains a C-terminal catalytic domain, and an N-terminal
CC region which modulates catalytic activity. {ECO:0000255|HAMAP-
CC Rule:MF_00099}.
CC -!- PTM: Phosphorylated by CheA. Phosphorylation of the N-terminal
CC regulatory domain activates the methylesterase activity.
CC {ECO:0000255|HAMAP-Rule:MF_00099}.
CC -!- SIMILARITY: Belongs to the CheB family. {ECO:0000255|HAMAP-
CC Rule:MF_00099}.
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DR EMBL; CP000075; AAY36359.1; -; Genomic_DNA.
DR RefSeq; WP_011266950.1; NC_007005.1.
DR RefSeq; YP_234397.1; NC_007005.1.
DR AlphaFoldDB; Q4ZWW3; -.
DR SMR; Q4ZWW3; -.
DR STRING; 205918.Psyr_1308; -.
DR KEGG; psb:Psyr_1308; -.
DR PATRIC; fig|205918.7.peg.1340; -.
DR eggNOG; COG2201; Bacteria.
DR HOGENOM; CLU_000445_51_0_6; -.
DR OrthoDB; 9793421at2; -.
DR Proteomes; UP000000426; 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; Cytoplasm; Hydrolase; Phosphoprotein.
FT CHAIN 1..336
FT /note="Protein-glutamate methylesterase/protein-glutamine
FT glutaminase 2"
FT /id="PRO_0000225477"
FT DOMAIN 2..119
FT /note="Response regulatory"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
FT DOMAIN 147..336
FT /note="CheB-type methylesterase"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
FT ACT_SITE 159
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
FT ACT_SITE 186
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
FT ACT_SITE 279
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
FT MOD_RES 53
FT /note="4-aspartylphosphate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
SQ SEQUENCE 336 AA; 35962 MW; 7F13A3408B8364FB CRC64;
MKIAIVNDMP MAIEALRRAL AFEPAHQIIW VASNGADAVQ RCVEQTPDLI LMDLIMPVMD
GVEATRRIMA ETPCAIVIVT VDHEQNMRRV FEAMGHGALD VVDTPAIGGP NPKEAAAPLL
RKILNIDWLI GQRVGLERVA ATPRAAPSRR DRLVAIGSSA GGPAALEILL KALPVSFPAA
IVLVQHVDQV FAAGMADWLS SASGLPVRLA REGETPQPGV VLLAGTNHHI RLLKDGTLAY
TAEPVNEVYR PSIDVFFESV TRYWSGEAIG VLLTGMGRDG AQGLKAMRER GFLTIAQDQA
SSAVYGMPKA AAAIDAAVEI RPLPAIAPRL IEVFTQ
//
