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CHEB3_SHEON
ID   CHEB3_SHEON             Reviewed;         356 AA.
AC   Q8EEQ0;
DT   19-JUL-2004, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2003, sequence version 1.
DT   03-AUG-2022, entry version 104.
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=SO_2327;
OS   Shewanella oneidensis (strain MR-1).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Alteromonadales;
OC   Shewanellaceae; Shewanella.
OX   NCBI_TaxID=211586;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MR-1;
RX   PubMed=12368813; DOI=10.1038/nbt749;
RA   Heidelberg J.F., Paulsen I.T., Nelson K.E., Gaidos E.J., Nelson W.C.,
RA   Read T.D., Eisen J.A., Seshadri R., Ward N.L., Methe B.A., Clayton R.A.,
RA   Meyer T., Tsapin A., Scott J., Beanan M.J., Brinkac L.M., Daugherty S.C.,
RA   DeBoy R.T., Dodson R.J., Durkin A.S., Haft D.H., Kolonay J.F., Madupu R.,
RA   Peterson J.D., Umayam L.A., White O., Wolf A.M., Vamathevan J.J.,
RA   Weidman J.F., Impraim M., Lee K., Berry K.J., Lee C., Mueller J.,
RA   Khouri H.M., Gill J., Utterback T.R., McDonald L.A., Feldblyum T.V.,
RA   Smith H.O., Venter J.C., Nealson K.H., Fraser C.M.;
RT   "Genome sequence of the dissimilatory metal ion-reducing bacterium
RT   Shewanella oneidensis.";
RL   Nat. Biotechnol. 20:1118-1123(2002).
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; AE014299; AAN55361.1; -; Genomic_DNA.
DR   RefSeq; NP_717917.1; NC_004347.2.
DR   RefSeq; WP_011072319.1; NZ_CP053946.1.
DR   AlphaFoldDB; Q8EEQ0; -.
DR   SMR; Q8EEQ0; -.
DR   STRING; 211586.SO_2327; -.
DR   PaxDb; Q8EEQ0; -.
DR   KEGG; son:SO_2327; -.
DR   PATRIC; fig|211586.12.peg.2242; -.
DR   eggNOG; COG2201; Bacteria.
DR   HOGENOM; CLU_000445_51_0_6; -.
DR   OMA; HAMAQTT; -.
DR   OrthoDB; 1655418at2; -.
DR   PhylomeDB; Q8EEQ0; -.
DR   BioCyc; SONE211586:G1GMP-2126-MON; -.
DR   Proteomes; UP000008186; 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..356
FT                   /note="Protein-glutamate methylesterase/protein-glutamine
FT                   glutaminase 3"
FT                   /id="PRO_0000158030"
FT   DOMAIN          3..120
FT                   /note="Response regulatory"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
FT   DOMAIN          165..356
FT                   /note="CheB-type methylesterase"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
FT   ACT_SITE        177
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
FT   ACT_SITE        203
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
FT   ACT_SITE        299
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
FT   MOD_RES         54
FT                   /note="4-aspartylphosphate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00099"
SQ   SEQUENCE   356 AA;  37954 MW;  92963E504B86CED8 CRC64;
     MIKVAIVDDS AVVRQVLSSM LENQPDITLL GCARDPLFAL KLFEQQWPDV IILDIEMPRM
     DGITFLKKVM AEKPTPVVIC STLTEQGASV TIAALAAGAV DIITKPKLGL KGFLEESQAR
     LLQAIRAAAK ASVAKLRVNG LAKPMPVIAK HNADVVLAST NHALNQTTDR VVALGTSTGG
     THALEYVLTA LPRTSAGIVV VQHMPEHFTA AFASRLNGVC EMEVKEAEDN DRVMPGLVLI
     ANGGKHMLLQ RSGAQYRVQL KDGPLVSRHR PSVDVLFRSV ANAAGKNALG VIMTGMGDDG
     ARGLLEMHQC GAITLAQDEA SCVVYGMPKE AVKLGAVSRQ VALDNIAEEI IAFTKQ
 
 
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