ID U7MKY1_9CORY Unreviewed; 237 AA.
AC U7MKY1;
DT 22-JAN-2014, integrated into UniProtKB/TrEMBL.
DT 22-JAN-2014, sequence version 1.
DT 24-JAN-2024, entry version 61.
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 ORFNames=HMPREF1290_01521 {ECO:0000313|EMBL:ERS71687.1};
OS Corynebacterium sp. KPL1989.
OC Bacteria; Actinomycetota; Actinomycetes; Mycobacteriales;
OC Corynebacteriaceae; Corynebacterium.
OX NCBI_TaxID=1203622 {ECO:0000313|EMBL:ERS71687.1, ECO:0000313|Proteomes:UP000017102};
RN [1] {ECO:0000313|EMBL:ERS71687.1, ECO:0000313|Proteomes:UP000017102}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=KPL1989 {ECO:0000313|EMBL:ERS71687.1,
RC ECO:0000313|Proteomes:UP000017102};
RG The Broad Institute Genomics Platform;
RA Earl A., Ward D., Feldgarden M., Gevers D., Jacobson B., Goguen K.,
RA Pagano E., Lemon K.P., Young S.K., Zeng Q., Gargeya S., Fitzgerald M.,
RA Abouelleil A., Alvarado L., Berlin A.M., Chapman S.B., Gainer-Dewar J.,
RA Goldberg J., Gnerre S., Griggs A., Gujja S., Hansen M., Howarth C.,
RA Imamovic A., Ireland A., Larimer J., McCowan C., Murphy C., Pearson M.,
RA Poon T.W., Priest M., Roberts A., Saif S., Shea T., Sykes S., Wortman J.,
RA Nusbaum C., Birren B.;
RT "The Genome Sequence of Corynebacterium sp. KPL1989.";
RL Submitted (OCT-2013) 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}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:ERS71687.1}.
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DR EMBL; AXLR01000005; ERS71687.1; -; Genomic_DNA.
DR RefSeq; WP_023019361.1; NZ_KI515717.1.
DR AlphaFoldDB; U7MKY1; -.
DR GeneID; 42781558; -.
DR PATRIC; fig|1203622.3.peg.1504; -.
DR eggNOG; COG1974; Bacteria.
DR HOGENOM; CLU_066192_45_0_11; -.
DR Proteomes; UP000017102; Unassembled WGS sequence.
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; cd00090; HTH_ARSR; 1.
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; IPR011991; ArsR-like_HTH.
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:UP000017102};
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 15..78
FT /note="LexA repressor DNA-binding"
FT /evidence="ECO:0000259|Pfam:PF01726"
FT DOMAIN 118..231
FT /note="Peptidase S24/S26A/S26B/S26C"
FT /evidence="ECO:0000259|Pfam:PF00717"
FT DNA_BIND 41..61
FT /note="H-T-H motif"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00015"
FT REGION 87..107
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 160
FT /note="For autocatalytic cleavage activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00015"
FT ACT_SITE 198
FT /note="For autocatalytic cleavage activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00015"
FT SITE 125..126
FT /note="Cleavage; by autolysis"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00015"
SQ SEQUENCE 237 AA; 26072 MW; 1A82881723DDE01D CRC64;
MPRPRTSSAP KPTFEQLSDR QRRILEVIRD AVMLRGYPPS IREIGDTAGL QSTSSVAYQL
KQLEEKGFLQ RDPNKPRAMI VRNMPETKKP GRRTNNAERN VNSGSQAPTD ASGYCYVPVL
GRIAAGTPIT AEENIDSYYP MPKEIVGGGD LFMLQVVGES MKDAGILDGD WVVVRSQKVA
EVGEFVAALL DGDEATVKEF HRDSSGIWLL PHNDAFSPIP GDEAEIMGKV VSVMRKL
//
