ID A0A2K8SW67_9NOSO Unreviewed; 665 AA.
AC A0A2K8SW67;
DT 25-APR-2018, integrated into UniProtKB/TrEMBL.
DT 25-APR-2018, sequence version 1.
DT 24-JAN-2024, entry version 23.
DE RecName: Full=UvrABC system protein B {ECO:0000256|ARBA:ARBA00029504, ECO:0000256|HAMAP-Rule:MF_00204};
DE Short=Protein UvrB {ECO:0000256|HAMAP-Rule:MF_00204};
DE AltName: Full=Excinuclease ABC subunit B {ECO:0000256|HAMAP-Rule:MF_00204};
GN Name=uvrB {ECO:0000256|HAMAP-Rule:MF_00204};
GN ORFNames=COO91_05682 {ECO:0000313|EMBL:AUB39684.1};
OS Nostoc flagelliforme CCNUN1.
OC Bacteria; Cyanobacteriota; Cyanophyceae; Nostocales; Nostocaceae; Nostoc.
OX NCBI_TaxID=2038116 {ECO:0000313|EMBL:AUB39684.1, ECO:0000313|Proteomes:UP000232003};
RN [1] {ECO:0000313|EMBL:AUB39684.1, ECO:0000313|Proteomes:UP000232003}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CCNUN1 {ECO:0000313|EMBL:AUB39684.1,
RC ECO:0000313|Proteomes:UP000232003};
RA Shang J.;
RT "Complete genome of a free-living desiccation-tolerant cyanobacterium and
RT its photosynthetic adaptation to extreme terrestrial habitat.";
RL Submitted (NOV-2017) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: The UvrABC repair system catalyzes the recognition and
CC processing of DNA lesions. A damage recognition complex composed of 2
CC UvrA and 2 UvrB subunits scans DNA for abnormalities. Upon binding of
CC the UvrA(2)B(2) complex to a putative damaged site, the DNA wraps
CC around one UvrB monomer. DNA wrap is dependent on ATP binding by UvrB
CC and probably causes local melting of the DNA helix, facilitating
CC insertion of UvrB beta-hairpin between the DNA strands. Then UvrB
CC probes one DNA strand for the presence of a lesion. If a lesion is
CC found the UvrA subunits dissociate and the UvrB-DNA preincision complex
CC is formed. This complex is subsequently bound by UvrC and the second
CC UvrB is released. If no lesion is found, the DNA wraps around the other
CC UvrB subunit that will check the other stand for damage.
CC {ECO:0000256|HAMAP-Rule:MF_00204}.
CC -!- SUBUNIT: Forms a heterotetramer with UvrA during the search for
CC lesions. Interacts with UvrC in an incision complex.
CC {ECO:0000256|ARBA:ARBA00026033, ECO:0000256|HAMAP-Rule:MF_00204,
CC ECO:0000256|RuleBase:RU003587}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|ARBA:ARBA00004496,
CC ECO:0000256|HAMAP-Rule:MF_00204, ECO:0000256|RuleBase:RU003587}.
CC -!- DOMAIN: The beta-hairpin motif is involved in DNA binding.
CC {ECO:0000256|HAMAP-Rule:MF_00204}.
CC -!- SIMILARITY: Belongs to the UvrB family. {ECO:0000256|ARBA:ARBA00008533,
CC ECO:0000256|HAMAP-Rule:MF_00204, ECO:0000256|RuleBase:RU003587}.
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DR EMBL; CP024785; AUB39684.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A2K8SW67; -.
DR KEGG; nfl:COO91_05682; -.
DR OrthoDB; 9806651at2; -.
DR Proteomes; UP000232003; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0009380; C:excinuclease repair complex; IEA:InterPro.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0016887; F:ATP hydrolysis activity; IEA:InterPro.
DR GO; GO:0003677; F:DNA binding; IEA:UniProtKB-UniRule.
DR GO; GO:0009381; F:excinuclease ABC activity; IEA:UniProtKB-UniRule.
DR GO; GO:0006289; P:nucleotide-excision repair; IEA:UniProtKB-UniRule.
DR GO; GO:0009432; P:SOS response; IEA:UniProtKB-UniRule.
DR CDD; cd17916; DEXHc_UvrB; 1.
DR CDD; cd18790; SF2_C_UvrB; 1.
DR Gene3D; 3.40.50.300; P-loop containing nucleotide triphosphate hydrolases; 3.
DR Gene3D; 4.10.860.10; UVR domain; 1.
DR HAMAP; MF_00204; UvrB; 1.
DR InterPro; IPR006935; Helicase/UvrB_N.
DR InterPro; IPR014001; Helicase_ATP-bd.
DR InterPro; IPR001650; Helicase_C.
DR InterPro; IPR027417; P-loop_NTPase.
DR InterPro; IPR001943; UVR_dom.
DR InterPro; IPR036876; UVR_dom_sf.
DR InterPro; IPR004807; UvrB.
DR InterPro; IPR041471; UvrB_inter.
DR InterPro; IPR024759; UvrB_YAD/RRR_dom.
DR NCBIfam; TIGR00631; uvrb; 1.
DR PANTHER; PTHR24029; UVRABC SYSTEM PROTEIN B; 1.
DR PANTHER; PTHR24029:SF0; UVRABC SYSTEM PROTEIN B; 1.
DR Pfam; PF00271; Helicase_C; 1.
DR Pfam; PF04851; ResIII; 1.
DR Pfam; PF02151; UVR; 1.
DR Pfam; PF12344; UvrB; 1.
DR Pfam; PF17757; UvrB_inter; 1.
DR SMART; SM00487; DEXDc; 1.
DR SMART; SM00490; HELICc; 1.
DR SUPFAM; SSF46600; C-terminal UvrC-binding domain of UvrB; 1.
DR SUPFAM; SSF52540; P-loop containing nucleoside triphosphate hydrolases; 2.
DR PROSITE; PS51192; HELICASE_ATP_BIND_1; 1.
DR PROSITE; PS51194; HELICASE_CTER; 1.
DR PROSITE; PS50151; UVR; 1.
PE 3: Inferred from homology;
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW Rule:MF_00204}; Coiled coil {ECO:0000256|SAM:Coils};
KW Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00204};
KW DNA damage {ECO:0000256|ARBA:ARBA00022763, ECO:0000256|HAMAP-
KW Rule:MF_00204};
KW DNA excision {ECO:0000256|ARBA:ARBA00022769, ECO:0000256|HAMAP-
KW Rule:MF_00204};
KW DNA repair {ECO:0000256|ARBA:ARBA00023204, ECO:0000256|HAMAP-
KW Rule:MF_00204};
KW Excision nuclease {ECO:0000256|ARBA:ARBA00022881, ECO:0000256|HAMAP-
KW Rule:MF_00204};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_00204}; Reference proteome {ECO:0000313|Proteomes:UP000232003};
KW SOS response {ECO:0000256|HAMAP-Rule:MF_00204,
KW ECO:0000256|RuleBase:RU003587}.
FT DOMAIN 25..171
FT /note="Helicase ATP-binding"
FT /evidence="ECO:0000259|PROSITE:PS51192"
FT DOMAIN 429..583
FT /note="Helicase C-terminal"
FT /evidence="ECO:0000259|PROSITE:PS51194"
FT DOMAIN 626..661
FT /note="UVR"
FT /evidence="ECO:0000259|PROSITE:PS50151"
FT COILED 629..661
FT /evidence="ECO:0000256|SAM:Coils"
FT MOTIF 91..114
FT /note="Beta-hairpin"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00204"
FT BINDING 38..45
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00204"
SQ SEQUENCE 665 AA; 75387 MW; 57C228A2F171ED62 CRC64;
MTEFCLQAPF SPTGDQPQAI AQLTASIQAG NRYQTLLGAT GTGKTFSVAA VIEKIGKPTL
VLAHNKTLAA QLCNELRDFF PNNAVEYFVS YYDYYQPEAY IPVTDTYIEK TAAINDEIDM
LRHSATRSLF ERRDVIVVAS ISCIYGLGMP AEYLKAAIPL QIGMEVNQRQ ILRDLANVQY
SRNDIEMGRG KFRVRGDVLE IGPAYEDRII RVEFFGDEID AIRYIDPVTG EILKSLEAVN
VYPARHFVTP EERLEVACND IAAELKQQKL DLEQAGKLLE AQRIDQRTRY DLEMLREVGY
CNGVENYSRH LAGRQAGESP ECLIDYFPKD WLLIIDESHV TVPQIRGMYN GDQARKKVLI
EHGFRLPSAA DNRPLKAEEF WEKVNQCIFV SATPGNWEIE VSEDHVVEQV IRPTGVVDPE
ISVRPTEGQI DDLLGEIKDR ADRHERVLIT TLTKRMAEDL TEYLQDHGIR VRYLHSEITS
IERIEILQNL REGKFDVLVG VNLLREGLDL PEVSLVAIMD ADKEGFLRTE RSLIQTIGRA
ARHIQGQAIL YADNMTGSMI KAIDETDRRR GIQTAHNRLH GITPQPIVKK SSNAILAFLD
VSRRLNATDL KVVDEHIDEL PLEQIPGLIT LLEAQMKEAA KKLEFEEAAK LRDRIKHLRD
KMLGR
//
