Reviewed, UniProtKB/Swiss-Prot A3MJD2 (LEXA_BURM7)

Names and origin

Protein names

Recommended name:
    LexA repressor
    EC=3.4.21.88

Gene names

Name:	lexA
Ordered Locus Names:	BMA10247_0805

Organism

Burkholderia mallei (strain NCTC 10247) [Complete proteome] [HAMAP]

Taxonomic identifier

320389 [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: HAMAP DNA replication Inferred from electronic annotation. Source: HAMAP SOS response Inferred from electronic annotation. Source: HAMAP negative regulation of transcription, DNA-dependent Inferred from electronic annotation. Source: HAMAP proteolysis Inferred from electronic annotation. Source: InterPro transcription Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	DNA binding Inferred from electronic annotation. Source: HAMAP serine-type endopeptidase activity Inferred from electronic annotation. Source: HAMAP
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_1000001268
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)
	A3MJD2-1 [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 (JAN-2007) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP000548 Genomic DNA. Translation: ABO04489.1.
RefSeq	YP_001080368.1.
3D structure databases
SMR	A3MJD2. Positions 1-69, 13-211, 90-215.
ModBase	Search...
Genome annotation databases
GeneID	4891690.
GenomeReviews	Gene locus BMA10247_0805 in contig CP000548_GR.
KEGG	bmn:BMA10247_0805.
TIGR	BMA10247_0805.
Phylogenomic databases
HOGENOM	HBG679610.
OMA	KVIGVFR.
Family and domain databases
HAMAP	MF_00015. LexA. [Tree]
InterPro	IPR006199. LexA_DNA-bd_dom. IPR006200. Pept_S24_LexA. IPR006197. Peptidase_S24_LexA_cons-reg. IPR019759. Peptidase_S24_S26_cons-reg. 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.
Pfam	PF01726. LexA_DNA_bind. 1 hit. PF00717. Peptidase_S24. 1 hit. [Graphical view]
PRINTS	PR00726. LEXASERPTASE.
TIGRFAMs	TIGR00498. lexA. 1 hit.
ProtoNet	Search...

Entry information

Entry name

LEXA_BURM7

Accession

Primary (citable) accession number: A3MJD2

Entry history

Integrated into UniProtKB/Swiss-Prot:	January 15, 2008
Last sequence update:	April 3, 2007
Last modified:	February 9, 2010
This is version 23 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)