Reviewed, UniProtKB/Swiss-Prot Q39T95 (CHEB2_GEOMG)

Names and origin

Protein names

Recommended name:
    Chemotaxis response regulator protein-glutamate methylesterase 2
    EC=3.1.1.61

Gene names

Name:	cheB2
Ordered Locus Names:	Gmet_2304

Organism

Geobacter metallireducens (strain GS-15 / ATCC 53774 / DSM 7210) [Complete proteome] [HAMAP]

Taxonomic identifier

269799 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Deltaproteobacteria › Desulfuromonadales › Geobacteraceae › Geobacter

Protein attributes

Sequence length	360 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Inferred from homology.

General annotation (Comments)

Function	Involved in the modulation of the chemotaxis system; catalyzes the demethylation of specific methylglutamate residues introduced into the chemoreceptors (methyl-accepting chemotaxis proteins) by cheR By similarity.
Catalytic activity	Protein L-glutamate O(5)-methyl ester + H2O = protein L-glutamate + methanol. HAMAP MF_00099
Subcellular location	Cytoplasm. HAMAP MF_00099
Domain	The N-terminal regulatory domain inhibits the activity of the C-terminal effector domain. HAMAP MF_00099
Post-translational modification	Phosphorylated by cheA. Phosphorylation suppresses the inhibitory activity of the N-terminal domain By similarity.
Sequence similarities	Contains 1 cheB-type methylesterase domain. Contains 1 response regulatory domain.

Ontologies

Keywords
Biological process	Chemotaxis
Cellular component	Cytoplasm
Molecular function	Hydrolase
PTM	Phosphoprotein
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	chemotaxis Inferred from electronic annotation. Source: HAMAP regulation of transcription, DNA-dependent Inferred from electronic annotation. Source: InterPro sensory perception of chemical stimulus Inferred from electronic annotation. Source: HAMAP two-component signal transduction system (phosphorelay) Inferred from electronic annotation. Source: HAMAP
Cellular component	cytoplasm Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	protein-glutamate methylesterase activity Inferred from electronic annotation. Source: HAMAP two-component response regulator activity Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 360	360	Chemotaxis response regulator protein-glutamate methylesterase 2 HAMAP MF_00099		PRO_0000264277
Regions
	Domain	5 – 120	116	Response regulatory
	Domain	163 – 356	194	CheB-type methylesterase
Sites
	Active site	175	1	By similarity
	Active site	202	1	By similarity
	Active site	298	1	By similarity
Amino acid modifications
	Modified residue	56	1	4-aspartylphosphate By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q39T95-1 [UniParc]. Last modified November 22, 2005. Version 1. Checksum: E727D511511D4470	FASTA	360	38,865
	10 20 30 40 50 60 MRKIRVVVID DSAFNRRAII KMLESMPEVV VAGYANDGEE GIRKVIDLKP DLVTLDLEMP 70 80 90 100 110 120 KMDGFTLLRI IMGYCPTPVI VISAKSDDEK VFKALELGAV DFVAKPSQGI SEELLTITDD 130 140 150 160 170 180 IQQKVRGVFS LNMKEIIRRE KVEVLAPPPV APKKAEAEPR RVVPCRLDVV AIGSSTGGPP 190 200 210 220 230 240 AIQRILSSFR EALPLAIVIS QHMPAGFTRT FAERLNRLSV FEVKEAADGD TVWPGRVLIA 250 260 270 280 290 300 PGGHNMVFEK SSGSVVVRVR KPSPEDRYIP SVDAMLASCA EVFGPRTLGV VLTGMGNDGS 310 320 330 340 350 360 RGVRAIKGAG GQALAEAESS AVVFGMPREA IATGVVDKVV PLDLIAREIR MRCGVATDLD

References

[1]

"Complete sequence of Geobacter metallireducens GS-15." Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T., Hammon N., Israni S., Pitluck S., Di Bartolo G., Chain P., Schmutz J., Larimer F., Land M., Kyrpides N., Ivanova N., Richardson P. Submitted (OCT-2005) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBLGenBankDDBJ	CP000148 Genomic DNA. Translation: ABB32529.1.
RefSeq	YP_385254.1.
3D structure databases
ModBase	Search...
Protein-protein interaction databases
STRING	Q39T95.
Genome annotation databases
GeneID	3740459.
GenomeReviews	Gene locus Gmet_2304 in contig CP000148_GR.
KEGG	gme:Gmet_2304.
NMPDR	fig|269799.3.peg.2548.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	Q39T95.
OMA	SQHMPAG.
Enzyme and pathway databases
BioCyc	GMET269799:GMET_2304-MON.
Family and domain databases
HAMAP	MF_00099. [Tree]
InterPro	IPR008248. Sig_transdc_resp-reg_CheB. IPR000673. Sig_transdc_resp-reg_Me-estase. IPR001789. Sig_transdc_resp-reg_receiver. [Graphical view]
Gene3D	G3DSA:3.40.50.180. Chemotax_RR_pGlu_Me-esterase. 1 hit.
Pfam	PF01339. CheB_methylest. 1 hit. PF00072. Response_reg. 1 hit. [Graphical view]
PIRSF	PIRSF000876. RR_chemtxs_CheB. 1 hit.
ProDom	PD005328. CheB_methylest. 1 hit. PD000039. Response_reg. 1 hit. [Graphical view] [Entries sharing at least one domain]
SMART	SM00448. REC. 1 hit. [Graphical view]
PROSITE	PS50122. CHEB. 1 hit. PS50110. RESPONSE_REGULATORY. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

CHEB2_GEOMG

Accession

Primary (citable) accession number: Q39T95

Entry history

Integrated into UniProtKB/Swiss-Prot:	December 12, 2006
Last sequence update:	November 22, 2005
Last modified:	November 3, 2009
This is version 35 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)