LEXA_GLUDA
ID LEXA_GLUDA Reviewed; 253 AA.
AC A9HJ64; B5ZK06;
DT 20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT 05-FEB-2008, sequence version 1.
DT 03-AUG-2022, entry version 91.
DE RecName: Full=LexA repressor {ECO:0000255|HAMAP-Rule:MF_00015};
DE EC=3.4.21.88 {ECO:0000255|HAMAP-Rule:MF_00015};
GN Name=lexA {ECO:0000255|HAMAP-Rule:MF_00015};
GN OrderedLocusNames=GDI1923, Gdia_0145;
OS Gluconacetobacter diazotrophicus (strain ATCC 49037 / DSM 5601 / CCUG 37298
OS / CIP 103539 / LMG 7603 / PAl5).
OC Bacteria; Proteobacteria; Alphaproteobacteria; Rhodospirillales;
OC Acetobacteraceae; Gluconacetobacter.
OX NCBI_TaxID=272568;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 49037 / DSM 5601 / CCUG 37298 / CIP 103539 / LMG 7603 / PAl5;
RX PubMed=19775431; DOI=10.1186/1471-2164-10-450;
RA Bertalan M., Albano R., de Padua V., Rouws L., Rojas C., Hemerly A.,
RA Teixeira K., Schwab S., Araujo J., Oliveira A., Franca L., Magalhaes V.,
RA Alqueres S., Cardoso A., Almeida W., Loureiro M.M., Nogueira E., Cidade D.,
RA Oliveira D., Simao T., Macedo J., Valadao A., Dreschsel M., Freitas F.,
RA Vidal M., Guedes H., Rodrigues E., Meneses C., Brioso P., Pozzer L.,
RA Figueiredo D., Montano H., Junior J., de Souza Filho G.,
RA Martin Quintana Flores V., Ferreira B., Branco A., Gonzalez P.,
RA Guillobel H., Lemos M., Seibel L., Macedo J., Alves-Ferreira M.,
RA Sachetto-Martins G., Coelho A., Santos E., Amaral G., Neves A.,
RA Pacheco A.B., Carvalho D., Lery L., Bisch P., Rossle S.C., Urmenyi T.,
RA Rael Pereira A., Silva R., Rondinelli E., von Kruger W., Martins O.,
RA Baldani J.I., Ferreira P.C.;
RT "Complete genome sequence of the sugarcane nitrogen-fixing endophyte
RT Gluconacetobacter diazotrophicus Pal5.";
RL BMC Genomics 10:450-450(2009).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 49037 / DSM 5601 / CCUG 37298 / CIP 103539 / LMG 7603 / PAl5;
RX PubMed=21304715; DOI=10.4056/sigs.972221;
RA Giongo A., Tyler H.L., Zipperer U.N., Triplett E.W.;
RT "Two genome sequences of the same bacterial strain, Gluconacetobacter
RT diazotrophicus PAl 5, suggest a new standard in genome sequence
RT submission.";
RL Stand. Genomic Sci. 2:309-317(2010).
CC -!- FUNCTION: Represses a number of genes involved in the response to DNA
CC damage (SOS response), including recA and lexA. In the presence of
CC single-stranded DNA, RecA interacts with LexA causing an autocatalytic
CC cleavage which disrupts the DNA-binding part of LexA, leading to
CC derepression of the SOS regulon and eventually DNA repair.
CC {ECO:0000255|HAMAP-Rule:MF_00015}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=Hydrolysis of Ala-|-Gly bond in repressor LexA.; EC=3.4.21.88;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00015};
CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00015}.
CC -!- SIMILARITY: Belongs to the peptidase S24 family. {ECO:0000255|HAMAP-
CC Rule:MF_00015}.
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DR EMBL; AM889285; CAP55866.1; -; Genomic_DNA.
DR EMBL; CP001189; ACI49945.1; -; Genomic_DNA.
DR RefSeq; WP_012225548.1; NC_011365.1.
DR AlphaFoldDB; A9HJ64; -.
DR SMR; A9HJ64; -.
DR STRING; 272568.GDI1923; -.
DR MEROPS; S24.001; -.
DR EnsemblBacteria; ACI49945; ACI49945; Gdia_0145.
DR EnsemblBacteria; CAP55866; CAP55866; GDI1923.
DR KEGG; gdi:GDI1923; -.
DR KEGG; gdj:Gdia_0145; -.
DR eggNOG; COG1974; Bacteria.
DR HOGENOM; CLU_066192_45_2_5; -.
DR OMA; DDEFHIR; -.
DR OrthoDB; 1933795at2; -.
DR Proteomes; UP000000736; Chromosome.
DR Proteomes; UP000001176; Chromosome.
DR GO; GO:0003677; F:DNA binding; IEA:UniProtKB-UniRule.
DR GO; GO:0004252; F:serine-type endopeptidase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0006281; P:DNA repair; IEA:UniProtKB-UniRule.
DR GO; GO:0006260; P:DNA replication; IEA:UniProtKB-UniRule.
DR GO; GO:0045892; P:negative regulation of transcription, DNA-templated; IEA:UniProtKB-UniRule.
DR GO; GO:0006508; P:proteolysis; IEA:InterPro.
DR GO; GO:0009432; P:SOS response; IEA:UniProtKB-UniRule.
DR CDD; cd06529; S24_LexA-like; 1.
DR Gene3D; 1.10.10.10; -; 1.
DR HAMAP; MF_00015; LexA; 1.
DR InterPro; IPR006200; LexA.
DR InterPro; IPR039418; LexA-like.
DR InterPro; IPR036286; LexA/Signal_pep-like_sf.
DR InterPro; IPR006199; LexA_DNA-bd_dom.
DR InterPro; IPR006197; Peptidase_S24_LexA.
DR InterPro; IPR015927; Peptidase_S24_S26A/B/C.
DR InterPro; IPR036388; WH-like_DNA-bd_sf.
DR InterPro; IPR036390; WH_DNA-bd_sf.
DR Pfam; PF01726; LexA_DNA_bind; 1.
DR Pfam; PF00717; Peptidase_S24; 1.
DR PRINTS; PR00726; LEXASERPTASE.
DR SUPFAM; SSF46785; SSF46785; 1.
DR SUPFAM; SSF51306; SSF51306; 1.
DR TIGRFAMs; TIGR00498; lexA; 1.
PE 3: Inferred from homology;
KW Autocatalytic cleavage; DNA damage; DNA repair; DNA replication;
KW DNA-binding; Hydrolase; Reference proteome; Repressor; SOS response;
KW Transcription; Transcription regulation.
FT CHAIN 1..253
FT /note="LexA repressor"
FT /id="PRO_1000074056"
FT DNA_BIND 26..46
FT /note="H-T-H motif"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00015"
FT REGION 73..97
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 174
FT /note="For autocatalytic cleavage activity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00015"
FT ACT_SITE 212
FT /note="For autocatalytic cleavage activity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00015"
FT SITE 139..140
FT /note="Cleavage; by autolysis"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00015"
SQ SEQUENCE 253 AA; 27763 MW; 5AF259E0FB8DD1C1 CRC64;
MLTRKQHELL LFIDRHLKQT GFSPSFDEMK DALNLRSKSG IHRLISALEE RDFLRRRHHR
ARALEVLRLP ETMPAATGKP PLAESGPPPV TAPATDESAA AESFVPNVIK GDFANRLAGA
SVATEAGAIH LPFYGRIAAG QPIEALRETG AQIEVPMNLL GHGEHYALEV AGDSMIEAGI
LDGDTVIIRR GDVAQNGQIV VALIDDQEVT LKRLRRRGST IALEPANARY EPRIVPSDRV
RIQGQLVGLL RRY
