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Protein

LexA repressor

Gene

lexA

Organism
Geobacter metallireducens (strain GS-15 / ATCC 53774 / DSM 7210)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Represses a number of genes involved in the response to DNA damage (SOS response), including recA and lexA. In the presence of single-stranded DNA, RecA interacts with LexA causing an autocatalytic cleavage which disrupts the DNA-binding part of LexA, leading to derepression of the SOS regulon and eventually DNA repair.UniRule annotation

Catalytic activityi

Hydrolysis of Ala-|-Gly bond in repressor LexA.UniRule annotation

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Active sitei120 – 1201For autocatalytic cleavage activityUniRule annotation
Active sitei157 – 1571For autocatalytic cleavage activityUniRule annotation

Regions

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
DNA bindingi28 – 4821H-T-H motifUniRule annotationAdd
BLAST

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Hydrolase, Repressor

Keywords - Biological processi

DNA damage, DNA repair, DNA replication, SOS response, Transcription, Transcription regulation

Keywords - Ligandi

DNA-binding

Enzyme and pathway databases

BioCyciGMET269799:GHNY-1463-MONOMER.

Protein family/group databases

MEROPSiS24.001.

Names & Taxonomyi

Protein namesi
Recommended name:
LexA repressorUniRule annotation (EC:3.4.21.88UniRule annotation)
Gene namesi
Name:lexAUniRule annotation
Ordered Locus Names:Gmet_1439
OrganismiGeobacter metallireducens (strain GS-15 / ATCC 53774 / DSM 7210)
Taxonomic identifieri269799 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaDeltaproteobacteriaDesulfuromonadalesGeobacteraceaeGeobacter
Proteomesi
  • UP000007073 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 201201LexA repressorPRO_1000001286Add
BLAST

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Sitei86 – 872Cleavage; by autolysisUniRule annotation

Keywords - PTMi

Autocatalytic cleavage

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi269799.Gmet_1439.

Structurei

3D structure databases

ProteinModelPortaliQ39VQ1.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the peptidase S24 family.UniRule annotation

Phylogenomic databases

eggNOGiENOG4105DS7. Bacteria.
COG1974. LUCA.
HOGENOMiHOG000232168.
KOiK01356.
OMAiNGAVYPY.
OrthoDBiPOG091H029U.

Family and domain databases

Gene3Di1.10.10.10. 1 hit.
2.10.109.10. 1 hit.
HAMAPiMF_00015. LexA. 1 hit.
InterProiIPR006200. LexA.
IPR006199. LexA_DNA-bd_dom.
IPR028360. Peptidase_S24/S26_b-rbn.
IPR006197. Peptidase_S24_LexA.
IPR019759. Peptidase_S24_S26.
IPR015927. Peptidase_S24_S26A/B/C.
IPR011991. WHTH_DNA-bd_dom.
[Graphical view]
PfamiPF01726. LexA_DNA_bind. 1 hit.
PF00717. Peptidase_S24. 1 hit.
[Graphical view]
PRINTSiPR00726. LEXASERPTASE.
SUPFAMiSSF46785. SSF46785. 1 hit.
SSF51306. SSF51306. 1 hit.
TIGRFAMsiTIGR00498. lexA. 1 hit.

Sequencei

Sequence statusi: Complete.

Q39VQ1-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MEELTPRQNE VLRFLEGYLT QYGYPPTMRD IAAHLRISGT LGVSKHLTAL
60 70 80 90 100
ERKGYIRRDP GNSRGISLVG HGSKSASLPI AGVVRAGMLQ PAIEDIEGYL
110 120 130 140 150
AIDQAQLKGG KFFLRVKGDS MVNAAILDGD LALIRPQPTA ENNDIVVAMV
160 170 180 190 200
DGEATLKAFY RERGQIRLQP RNPNMEPIII REGEGEVAIV GKVVGIFRTL

E
Length:201
Mass (Da):22,020
Last modified:November 22, 2005 - v1
Checksum:iBA65B5A646E86711
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000148 Genomic DNA. Translation: ABB31673.1.
RefSeqiWP_004511630.1. NC_007517.1.

Genome annotation databases

EnsemblBacteriaiABB31673; ABB31673; Gmet_1439.
KEGGigme:Gmet_1439.
PATRICi22002098. VBIGeoMet55070_1476.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000148 Genomic DNA. Translation: ABB31673.1.
RefSeqiWP_004511630.1. NC_007517.1.

3D structure databases

ProteinModelPortaliQ39VQ1.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi269799.Gmet_1439.

Protein family/group databases

MEROPSiS24.001.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiABB31673; ABB31673; Gmet_1439.
KEGGigme:Gmet_1439.
PATRICi22002098. VBIGeoMet55070_1476.

Phylogenomic databases

eggNOGiENOG4105DS7. Bacteria.
COG1974. LUCA.
HOGENOMiHOG000232168.
KOiK01356.
OMAiNGAVYPY.
OrthoDBiPOG091H029U.

Enzyme and pathway databases

BioCyciGMET269799:GHNY-1463-MONOMER.

Family and domain databases

Gene3Di1.10.10.10. 1 hit.
2.10.109.10. 1 hit.
HAMAPiMF_00015. LexA. 1 hit.
InterProiIPR006200. LexA.
IPR006199. LexA_DNA-bd_dom.
IPR028360. Peptidase_S24/S26_b-rbn.
IPR006197. Peptidase_S24_LexA.
IPR019759. Peptidase_S24_S26.
IPR015927. Peptidase_S24_S26A/B/C.
IPR011991. WHTH_DNA-bd_dom.
[Graphical view]
PfamiPF01726. LexA_DNA_bind. 1 hit.
PF00717. Peptidase_S24. 1 hit.
[Graphical view]
PRINTSiPR00726. LEXASERPTASE.
SUPFAMiSSF46785. SSF46785. 1 hit.
SSF51306. SSF51306. 1 hit.
TIGRFAMsiTIGR00498. lexA. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiLEXA_GEOMG
AccessioniPrimary (citable) accession number: Q39VQ1
Entry historyi
Integrated into UniProtKB/Swiss-Prot: January 15, 2008
Last sequence update: November 22, 2005
Last modified: September 7, 2016
This is version 78 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Peptidase families
    Classification of peptidase families and list of entries
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.