ID CHEB_GLUOX Reviewed; 351 AA.
AC Q5FQQ0;
DT 07-MAR-2006, integrated into UniProtKB/Swiss-Prot.
DT 01-MAR-2005, sequence version 1.
DT 27-MAR-2024, entry version 113.
DE RecName: Full=Protein-glutamate methylesterase/protein-glutamine glutaminase {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=cheB {ECO:0000255|HAMAP-Rule:MF_00099}; OrderedLocusNames=GOX1555;
OS Gluconobacter oxydans (strain 621H) (Gluconobacter suboxydans).
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Rhodospirillales;
OC Acetobacteraceae; Gluconobacter.
OX NCBI_TaxID=290633;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=621H;
RX PubMed=15665824; DOI=10.1038/nbt1062;
RA Prust C., Hoffmeister M., Liesegang H., Wiezer A., Fricke W.F.,
RA Ehrenreich A., Gottschalk G., Deppenmeier U.;
RT "Complete genome sequence of the acetic acid bacterium Gluconobacter
RT oxydans.";
RL Nat. Biotechnol. 23:195-200(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; CP000009; AAW61296.1; -; Genomic_DNA.
DR RefSeq; WP_011253081.1; NZ_LT900338.1.
DR AlphaFoldDB; Q5FQQ0; -.
DR SMR; Q5FQQ0; -.
DR STRING; 290633.GOX1555; -.
DR KEGG; gox:GOX1555; -.
DR eggNOG; COG2201; Bacteria.
DR HOGENOM; CLU_000445_51_0_5; -.
DR Proteomes; UP000006375; 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:SF3; PROTEIN-GLUTAMATE METHYLESTERASE_PROTEIN-GLUTAMINE GLUTAMINASE 1; 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; Reference proteome.
FT CHAIN 1..351
FT /note="Protein-glutamate methylesterase/protein-glutamine
FT glutaminase"
FT /id="PRO_0000225462"
FT DOMAIN 8..125
FT /note="Response regulatory"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
FT DOMAIN 151..345
FT /note="CheB-type methylesterase"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
FT ACT_SITE 162
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
FT ACT_SITE 188
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
FT ACT_SITE 287
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
FT MOD_RES 59
FT /note="4-aspartylphosphate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
SQ SEQUENCE 351 AA; 37388 MW; B6F76C0DD3EAFB0B CRC64;
MSGARPLTVV VVDDSLTTRA LIAAALRRDP RVKIVGTAGT PFEARDLIVR LNPDVLTLDF
EMPSMNGLQF LEKIMRLRPM PVVMVSGHLS SHRGLVEQSL RMGAAEWYSK TTTANGEDPF
AGLGDAIVRA AAMKQQAPVP VATDSANRTV PKIGTVVGIG ASTGGVEALT DVLGHFPVAC
PPTVIVQHMP RQFSESFARR LDRIVKPEVR LAEEGDMLKP GTVYVASGGE RHLRVRCGAR
SGEYVCQLVA APPVNGHRPS VDELFYSLAT TVGKNAVGVI LTGMECDGAQ GLLAMRHAGA
STIGQDRASS VIYGMPRAAY ELGAVETQLP LSAIGPAILN LCERRSLETY P
//
