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Protein

LexA repressor

Gene

lexA

Organism
Ralstonia solanacearum (strain GMI1000) (Pseudomonas solanacearum)
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)DescriptionActionsGraphical viewLength
Active sitei134For autocatalytic cleavage activityUniRule annotation1
Active sitei171For autocatalytic cleavage activityUniRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
DNA bindingi28 – 48H-T-H motifUniRule annotationAdd BLAST21

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

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:RSc1304
ORF Names:RS02826
OrganismiRalstonia solanacearum (strain GMI1000) (Pseudomonas solanacearum)
Taxonomic identifieri267608 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaBetaproteobacteriaBurkholderialesBurkholderiaceaeRalstonia
Proteomesi
  • UP000001436 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001700741 – 216LexA repressorAdd BLAST216

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sitei99 – 100Cleavage; by autolysisUniRule annotation2

Keywords - PTMi

Autocatalytic cleavage

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi267608.RSc1304.

Structurei

3D structure databases

ProteinModelPortaliQ8XZU1.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the peptidase S24 family.UniRule annotation

Phylogenomic databases

eggNOGiENOG4105DS7. Bacteria.
COG1974. LUCA.
HOGENOMiHOG000232167.
KOiK01356.
OMAiKQHELLM.
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.

Q8XZU1-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MATLTTRQQQ IYDLIHQTIQ RTGFPPTRAE IAAEFGFSSP NAAEEHLRAL
60 70 80 90 100
ARKGVIELTP GASRGIRLRA EGGASPHQFS LPSMGLMQLT LPLVGRVAAG
110 120 130 140 150
SPILAAEHID RQYQVDPSLF SSRPDFLLKV RGMSMRDAGI LDGDLLAVQR
160 170 180 190 200
AAEAANGKIV VARLGDDVTV KRFQRKGRQV ELIAENPDFE PIHVDLDRDE
210
FQLEGLAVGL IRPAAP
Length:216
Mass (Da):23,536
Last modified:March 1, 2002 - v1
Checksum:i269AA8580D7CABD3
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AL646052 Genomic DNA. Translation: CAD15006.1.
RefSeqiWP_011001253.1. NC_003295.1.

Genome annotation databases

EnsemblBacteriaiCAD15006; CAD15006; RSc1304.
GeneIDi1220128.
KEGGirso:RSc1304.
PATRICi20261225. VBIRalSol70888_1327.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AL646052 Genomic DNA. Translation: CAD15006.1.
RefSeqiWP_011001253.1. NC_003295.1.

3D structure databases

ProteinModelPortaliQ8XZU1.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi267608.RSc1304.

Protein family/group databases

MEROPSiS24.001.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiCAD15006; CAD15006; RSc1304.
GeneIDi1220128.
KEGGirso:RSc1304.
PATRICi20261225. VBIRalSol70888_1327.

Phylogenomic databases

eggNOGiENOG4105DS7. Bacteria.
COG1974. LUCA.
HOGENOMiHOG000232167.
KOiK01356.
OMAiKQHELLM.
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.
ProtoNetiSearch...

Entry informationi

Entry nameiLEXA_RALSO
AccessioniPrimary (citable) accession number: Q8XZU1
Entry historyi
Integrated into UniProtKB/Swiss-Prot: November 25, 2002
Last sequence update: March 1, 2002
Last modified: November 2, 2016
This is version 100 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.