ID C5C9W3_MICLC Unreviewed; 238 AA.
AC C5C9W3;
DT 28-JUL-2009, integrated into UniProtKB/TrEMBL.
DT 28-JUL-2009, sequence version 1.
DT 27-MAR-2024, entry version 100.
DE RecName: Full=LexA repressor {ECO:0000256|HAMAP-Rule:MF_00015};
DE EC=3.4.21.88 {ECO:0000256|HAMAP-Rule:MF_00015};
GN Name=lexA {ECO:0000256|HAMAP-Rule:MF_00015,
GN ECO:0000313|EMBL:SQG49219.1};
GN OrderedLocusNames=Mlut_07330 {ECO:0000313|EMBL:ACS30265.1};
GN ORFNames=NCTC2665_01753 {ECO:0000313|EMBL:SQG49219.1};
OS Micrococcus luteus (strain ATCC 4698 / DSM 20030 / JCM 1464 / NBRC 3333 /
OS NCIMB 9278 / NCTC 2665 / VKM Ac-2230) (Micrococcus lysodeikticus).
OC Bacteria; Actinomycetota; Actinomycetes; Micrococcales; Micrococcaceae;
OC Micrococcus.
OX NCBI_TaxID=465515 {ECO:0000313|EMBL:ACS30265.1, ECO:0000313|Proteomes:UP000000738};
RN [1] {ECO:0000313|EMBL:ACS30265.1}
RP NUCLEOTIDE SEQUENCE.
RC STRAIN=NCTC 2665 {ECO:0000313|EMBL:ACS30265.1};
RG US DOE Joint Genome Institute;
RA Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA Bruce D., Goodwin L., Pitluck S., Lowry S., Larimer F., Land M., Hauser L.,
RA Kyrpides N., Lykidis A., Young M., Greenblatt C.;
RT "Complete sequence of Micrococcus luteus NCTC 2665.";
RL Submitted (MAY-2009) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|Proteomes:UP000000738}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 4698 / DSM 20030 / JCM 1464 / NBRC 3333 / NCIMB 9278 /
RC NCTC 2665 / VKM Ac-2230 {ECO:0000313|Proteomes:UP000000738};
RX PubMed=19948807; DOI=10.1128/JB.01254-09;
RA Young M., Artsatbanov V., Beller H.R., Chandra G., Chater K.F., Dover L.G.,
RA Goh E.B., Kahan T., Kaprelyants A.S., Kyrpides N., Lapidus A., Lowry S.R.,
RA Lykidis A., Mahillon J., Markowitz V., Mavromatis K., Mukamolova G.V.,
RA Oren A., Rokem J.S., Smith M.C., Young D.I., Greenblatt C.L.;
RT "Genome sequence of the Fleming strain of Micrococcus luteus, a simple
RT free-living actinobacterium.";
RL J. Bacteriol. 192:841-860(2010).
RN [3] {ECO:0000313|EMBL:SQG49219.1, ECO:0000313|Proteomes:UP000248985}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=NCTC2665 {ECO:0000313|EMBL:SQG49219.1,
RC ECO:0000313|Proteomes:UP000248985};
RG Pathogen Informatics;
RA Doyle S.;
RL Submitted (JUN-2018) to the EMBL/GenBank/DDBJ databases.
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:0000256|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:0000256|HAMAP-Rule:MF_00015};
CC -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_00015}.
CC -!- SIMILARITY: Belongs to the peptidase S24 family.
CC {ECO:0000256|ARBA:ARBA00007484, ECO:0000256|HAMAP-Rule:MF_00015,
CC ECO:0000256|RuleBase:RU003991}.
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DR EMBL; CP001628; ACS30265.1; -; Genomic_DNA.
DR EMBL; LS483396; SQG49219.1; -; Genomic_DNA.
DR RefSeq; WP_010079096.1; NZ_WBMF01000003.1.
DR AlphaFoldDB; C5C9W3; -.
DR STRING; 465515.Mlut_07330; -.
DR MEROPS; S24.001; -.
DR EnsemblBacteria; ACS30265; ACS30265; Mlut_07330.
DR KEGG; mlu:Mlut_07330; -.
DR PATRIC; fig|465515.4.peg.697; -.
DR eggNOG; COG1974; Bacteria.
DR HOGENOM; CLU_066192_45_0_11; -.
DR Proteomes; UP000000738; Chromosome.
DR Proteomes; UP000248985; Chromosome 1.
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 DNA-templated transcription; 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; 2.10.109.10; Umud Fragment, subunit A; 1.
DR Gene3D; 1.10.10.10; Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain; 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 NCBIfam; TIGR00498; lexA; 1.
DR PANTHER; PTHR33516; LEXA REPRESSOR; 1.
DR PANTHER; PTHR33516:SF2; LEXA REPRESSOR; 1.
DR Pfam; PF01726; LexA_DNA_bind; 1.
DR Pfam; PF00717; Peptidase_S24; 1.
DR PRINTS; PR00726; LEXASERPTASE.
DR SUPFAM; SSF51306; LexA/Signal peptidase; 1.
DR SUPFAM; SSF46785; Winged helix' DNA-binding domain; 1.
PE 3: Inferred from homology;
KW Autocatalytic cleavage {ECO:0000256|ARBA:ARBA00022813, ECO:0000256|HAMAP-
KW Rule:MF_00015};
KW DNA damage {ECO:0000256|ARBA:ARBA00022763, ECO:0000256|HAMAP-
KW Rule:MF_00015};
KW DNA repair {ECO:0000256|ARBA:ARBA00023204, ECO:0000256|HAMAP-
KW Rule:MF_00015};
KW DNA replication {ECO:0000256|ARBA:ARBA00022705, ECO:0000256|HAMAP-
KW Rule:MF_00015};
KW DNA-binding {ECO:0000256|ARBA:ARBA00023125, ECO:0000256|HAMAP-
KW Rule:MF_00015};
KW Hydrolase {ECO:0000256|ARBA:ARBA00022801, ECO:0000256|HAMAP-Rule:MF_00015};
KW Reference proteome {ECO:0000313|Proteomes:UP000000738};
KW Repressor {ECO:0000256|ARBA:ARBA00022491, ECO:0000256|HAMAP-Rule:MF_00015};
KW SOS response {ECO:0000256|ARBA:ARBA00023236, ECO:0000256|HAMAP-
KW Rule:MF_00015};
KW Transcription {ECO:0000256|ARBA:ARBA00023163, ECO:0000256|HAMAP-
KW Rule:MF_00015};
KW Transcription regulation {ECO:0000256|ARBA:ARBA00023015, ECO:0000256|HAMAP-
KW Rule:MF_00015}.
FT DOMAIN 13..75
FT /note="LexA repressor DNA-binding"
FT /evidence="ECO:0000259|Pfam:PF01726"
FT DOMAIN 120..232
FT /note="Peptidase S24/S26A/S26B/S26C"
FT /evidence="ECO:0000259|Pfam:PF00717"
FT DNA_BIND 38..58
FT /note="H-T-H motif"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00015"
FT ACT_SITE 162
FT /note="For autocatalytic cleavage activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00015"
FT ACT_SITE 199
FT /note="For autocatalytic cleavage activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00015"
FT SITE 127..128
FT /note="Cleavage; by autolysis"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00015"
SQ SEQUENCE 238 AA; 25670 MW; 50BDFA676C1AA94B CRC64;
MSTTDDQPAA RAPLTDRQRR IVQTIRDAIA DHGYPPSMRE IGDAAGLASL SSVTHQLGRL
ERHGYIRRDP GRPRALEVLL DVDGTPLGEA ASPAAAPSSQ VSTIAAWHTG TDEADSVPVP
WVGRIAAGGP VLAEQQVEDV MAIPRRLTGE GELFMLRVTG DSMVDAAICD GDWVVVRRQE
TAENGDIVAA LLDDEATVKT FRRRDGHTWL LPQNTAYEPI LGDHATVMGR VVTVLRSL
//
