ID C0XSK2_CORLD Unreviewed; 229 AA.
AC C0XSK2;
DT 26-MAY-2009, integrated into UniProtKB/TrEMBL.
DT 26-MAY-2009, sequence version 1.
DT 27-MAR-2024, entry version 85.
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:EEI16769.1};
GN ORFNames=HMPREF0298_1422 {ECO:0000313|EMBL:EEI16769.1};
OS Corynebacterium lipophiloflavum (strain ATCC 700352 / DSM 44291 / CCUG
OS 37336 / JCM 10383 / DMMZ 1944).
OC Bacteria; Actinomycetota; Actinomycetes; Mycobacteriales;
OC Corynebacteriaceae; Corynebacterium.
OX NCBI_TaxID=525263 {ECO:0000313|EMBL:EEI16769.1, ECO:0000313|Proteomes:UP000006196};
RN [1] {ECO:0000313|EMBL:EEI16769.1, ECO:0000313|Proteomes:UP000006196}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 700352 / DSM 44291 / CCUG 37336 / JCM 10383 / DMMZ 1944
RC {ECO:0000313|Proteomes:UP000006196};
RA Qin X., Bachman B., Battles P., Bell A., Bess C., Bickham C., Chaboub L.,
RA Chen D., Coyle M., Deiros D.R., Dinh H., Forbes L., Fowler G.,
RA Francisco L., Fu Q., Gubbala S., Hale W., Han Y., Hemphill L.,
RA Highlander S.K., Hirani K., Hogues M., Jackson L., Jakkamsetti A.,
RA Javaid M., Jiang H., Korchina V., Kovar C., Lara F., Lee S., Mata R.,
RA Mathew T., Moen C., Morales K., Munidasa M., Nazareth L., Ngo R.,
RA Nguyen L., Okwuonu G., Ongeri F., Patil S., Petrosino J., Pham C., Pham P.,
RA Pu L.-L., Puazo M., Raj R., Reid J., Rouhana J., Saada N., Shang Y.,
RA Simmons D., Thornton R., Warren J., Weissenberger G., Zhang J., Zhang L.,
RA Zhou C., Zhu D., Muzny D., Worley K., Gibbs R.;
RL Submitted (JAN-2009) 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:EEI16769.1}.
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DR EMBL; ACHJ01000116; EEI16769.1; -; Genomic_DNA.
DR RefSeq; WP_006840149.1; NZ_GG667192.1.
DR AlphaFoldDB; C0XSK2; -.
DR STRING; 525263.HMPREF0298_1422; -.
DR MEROPS; S24.001; -.
DR eggNOG; COG1974; Bacteria.
DR HOGENOM; CLU_066192_45_0_11; -.
DR OrthoDB; 9802364at2; -.
DR Proteomes; UP000006196; 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; 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 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..77
FT /note="LexA repressor DNA-binding"
FT /evidence="ECO:0000259|Pfam:PF01726"
FT DOMAIN 111..223
FT /note="Peptidase S24/S26A/S26B/S26C"
FT /evidence="ECO:0000259|Pfam:PF00717"
FT DNA_BIND 40..60
FT /note="H-T-H motif"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00015"
FT REGION 66..108
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 66..98
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 153
FT /note="For autocatalytic cleavage activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00015"
FT ACT_SITE 190
FT /note="For autocatalytic cleavage activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00015"
FT SITE 118..119
FT /note="Cleavage; by autolysis"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00015"
SQ SEQUENCE 229 AA; 25356 MW; 5F9BBE7594EB3F5B CRC64;
MPRKKDDPTN LDMSVLSDRQ RRILEVIQDA VVLRGYPPSI REIGDAAGLQ STSSVAYQLK
ELERKGFLRR DPNKPRAVDL RHLPDSQKSS RKTKPKAAPT PEDASQPRYV PVVGQIAAGS
PILAEENVDN YFPLPQELLG DGELYMLRVV GESMRDAGIL DGDWVVVRSQ PVAEEGEFVA
ALLDGEATVK EFHKDTTGVW LLPHNDAFSP IKGDEAEIMG RVVSVFRTL
//
