CHEB3_MAGSA
ID CHEB3_MAGSA Reviewed; 355 AA.
AC Q2W2W9;
DT 12-DEC-2006, integrated into UniProtKB/Swiss-Prot.
DT 10-JAN-2006, sequence version 1.
DT 25-MAY-2022, entry version 102.
DE RecName: Full=Protein-glutamate methylesterase/protein-glutamine glutaminase 3 {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=cheB3 {ECO:0000255|HAMAP-Rule:MF_00099}; OrderedLocusNames=amb3002;
OS Magnetospirillum magneticum (strain AMB-1 / ATCC 700264).
OC Bacteria; Proteobacteria; Alphaproteobacteria; Rhodospirillales;
OC Rhodospirillaceae; Magnetospirillum.
OX NCBI_TaxID=342108;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=AMB-1 / ATCC 700264;
RX PubMed=16303747; DOI=10.1093/dnares/dsi002;
RA Matsunaga T., Okamura Y., Fukuda Y., Wahyudi A.T., Murase Y., Takeyama H.;
RT "Complete genome sequence of the facultative anaerobic magnetotactic
RT bacterium Magnetospirillum sp. strain AMB-1.";
RL DNA Res. 12:157-166(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}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; AP007255; BAE51806.1; -; Genomic_DNA.
DR RefSeq; WP_011385378.1; NC_007626.1.
DR AlphaFoldDB; Q2W2W9; -.
DR SMR; Q2W2W9; -.
DR STRING; 342108.amb3002; -.
DR EnsemblBacteria; BAE51806; BAE51806; amb3002.
DR KEGG; mag:amb3002; -.
DR HOGENOM; CLU_000445_51_0_5; -.
DR OMA; DRVMAQD; -.
DR OrthoDB; 1655418at2; -.
DR Proteomes; UP000007058; 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 GO; GO:0018277; P:protein deamination; IEA:UniProtKB-UniRule.
DR GO; GO:0006482; P:protein demethylation; IEA:UniProtKB-UniRule.
DR CDD; cd16432; CheB_Rec; 1.
DR Gene3D; 3.40.50.180; -; 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 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; SSF52172; 1.
DR SUPFAM; SSF52738; SSF52738; 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..355
FT /note="Protein-glutamate methylesterase/protein-glutamine
FT glutaminase 3"
FT /id="PRO_0000264288"
FT DOMAIN 8..123
FT /note="Response regulatory"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
FT DOMAIN 160..350
FT /note="CheB-type methylesterase"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
FT REGION 139..161
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 146..161
FT /note="Pro residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 172
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
FT ACT_SITE 199
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
FT ACT_SITE 292
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 355 AA; 36570 MW; DC3DD6E0AFA6DF48 CRC64;
MPARGKISVL IVDDSGMARA MLRSIFEDED DFDVVAEAVN GREAIEMVRH LRPGLVTMDL
EMPEMGGLEA IEEIMCSKAV PILVVSGVAD AQKAFGAMSR GAVDVVAKPN VTSAREVEDF
VDKARLVAKI PVITVPRTRS APAAGPTPVP QAPPPPAAPP AGDGGIIAIA ASTGGPQALA
ALLAAIGRPL SCPMVVAQHI SDGFASGMAD WLNSISAMPV RLAAEGERLT AGTVYLSPSE
WNMSVTESRH IALALRPERQ VYRPSCDALL TSVAQVAGRR AVGVILTGMG SDGVAGMEAI
SKAGGTTLGQ DEGSSVIFGM NAIAIERGWV QRVLPLAELA ASLLEITGAS VGAAP
