A3NUV3 (LEXA_BURP0) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
LexA repressor
EC=3.4.21.88

Gene names

Name:	lexA
Ordered Locus Names:	BURPS1106A_1859

Organism

Burkholderia pseudomallei (strain 1106a) [Complete proteome] [HAMAP]

Taxonomic identifier

357348 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Betaproteobacteria › Burkholderiales › Burkholderiaceae › Burkholderia › pseudomallei group

Protein attributes

Sequence length	215 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	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 By similarity. HAMAP MF_00015
Catalytic activity	Hydrolysis of Ala-|-Gly bond in repressor lexA. HAMAP MF_00015
Subunit structure	Homodimer By similarity. HAMAP MF_00015
Sequence similarities	Belongs to the peptidase S24 family.

Ontologies

Keywords
Biological process	DNA damage DNA repair DNA replication SOS response Transcription Transcription regulation
Ligand	DNA-binding
Molecular function	Hydrolase Repressor
PTM	Autocatalytic cleavage
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	DNA repair Inferred from electronic annotation. Source: UniProtKB-KW DNA replication Inferred from electronic annotation. Source: UniProtKB-KW SOS response Inferred from electronic annotation. Source: UniProtKB-KW proteolysis Inferred from electronic annotation. Source: InterPro regulation of transcription, DNA-dependent Inferred from electronic annotation. Source: UniProtKB-KW transcription, DNA-dependent Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	DNA binding Inferred from electronic annotation. Source: UniProtKB-KW serine-type endopeptidase 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 – 215	215	LexA repressor HAMAP MF_00015		PRO_1000001271
Regions
	DNA binding	28 – 48	21	H-T-H motif By similarity
Sites
	Active site	133	1	For autocatalytic cleavage activity By similarity
	Active site	170	1	For autocatalytic cleavage activity By similarity
	Site	98 – 99	2	Cleavage; by autolysis By similarity

Sequences

	Sequence		Length	Mass (Da)
	A3NUV3 [UniParc]. Last modified April 3, 2007. Version 1. Checksum: 713C9B66594842E5	FASTA	215	23,199
	10 20 30 40 50 60 MIKLTARQQQ VFDLIRRAIE RSGFPPTRAE IAAELGFSSP NAAEEHLRAL ARKGVIELAA 70 80 90 100 110 120 GASRGIRLLG IDDAPHQLTL PHAALMQLSL PLVGRVAAGS PILAQEHISQ HYACDPALFS 130 140 150 160 170 180 SKPDYLLKVR GLSMRDAGIL DGDLLAVQKR TEAKDGQIIV ARLGDDVTVK RLKRRPGGVE 190 200 210 LIAENPDYEN IFVKAGSAEF ALEGIAVGLI RPGEF

References

[1]	DeShazer D., Woods D.E., Nierman W.C. Submitted (FEB-2007) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: 1106a.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP000572 Genomic DNA. Translation: ABN92163.1.
RefSeq	YP_001066124.1. NC_009076.1.
3D structure databases
ProteinModelPortal	A3NUV3.
SMR	A3NUV3. Positions 1-69, 90-215.
ModBase	Search...
Protein-protein interaction databases
STRING	A3NUV3.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	4902638.
GenomeReviews	Gene locus BURPS1106A_1859 in contig CP000572_GR.
KEGG	bpl:BURPS1106A_1859.
PATRIC	19222231. VBIBurPse14980_1783.
TIGR	BURPS1106A_1859.
Phylogenomic databases
eggNOG	COG1974.
HOGENOM	HBG679610.
OMA	IAENPDF.
ProtClustDB	PRK00215.
Family and domain databases
HAMAP	MF_00015. LexA. [Tree]
InterPro	IPR006199. LexA_DNA-bd_dom. IPR006200. Pept_S24_LexA. IPR006197. Peptidase_S24_LexA. IPR019759. Peptidase_S24_S26. IPR015927. Peptidase_S24_S26A/B/C. IPR011056. Peptidase_S24_S26A/B/C_b-rbn. IPR011991. WHTH_trsnscrt_rep_DNA-bd. [Graphical view]
Gene3D	G3DSA:2.10.109.10. Pept_S24_S26_C. 1 hit. G3DSA:1.10.10.10. Wing_hlx_DNA_bd. 1 hit.
KO	K01356.
Pfam	PF01726. LexA_DNA_bind. 1 hit. PF00717. Peptidase_S24. 1 hit. [Graphical view]
PRINTS	PR00726. LEXASERPTASE.
SUPFAM	SSF51306. Pept_S24_S26_C. 1 hit.
TIGRFAMs	TIGR00498. LexA. 1 hit.
ProtoNet	Search...

Entry information

Entry name

LEXA_BURP0

Accession

Primary (citable) accession number: A3NUV3

Entry history

Integrated into UniProtKB/Swiss-Prot:	January 15, 2008
Last sequence update:	April 3, 2007
Last modified:	January 25, 2012
This is version 34 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program