ID   UVRB_MICAN              Reviewed;         667 AA.
AC   B0JR86;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   18-MAR-2008, sequence version 1.
DT   03-AUG-2022, entry version 85.
DE   RecName: Full=UvrABC system protein B {ECO:0000255|HAMAP-Rule:MF_00204};
DE            Short=Protein UvrB {ECO:0000255|HAMAP-Rule:MF_00204};
DE   AltName: Full=Excinuclease ABC subunit B {ECO:0000255|HAMAP-Rule:MF_00204};
GN   Name=uvrB {ECO:0000255|HAMAP-Rule:MF_00204}; OrderedLocusNames=MAE_41330;
OS   Microcystis aeruginosa (strain NIES-843 / IAM M-2473).
OC   Bacteria; Cyanobacteria; Oscillatoriophycideae; Chroococcales;
OC   Microcystaceae; Microcystis.
OX   NCBI_TaxID=449447;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=NIES-843 / IAM M-247;
RX   PubMed=18192279; DOI=10.1093/dnares/dsm026;
RA   Kaneko T., Nakajima N., Okamoto S., Suzuki I., Tanabe Y., Tamaoki M.,
RA   Nakamura Y., Kasai F., Watanabe A., Kawashima K., Kishida Y., Ono A.,
RA   Shimizu Y., Takahashi C., Minami C., Fujishiro T., Kohara M., Katoh M.,
RA   Nakazaki N., Nakayama S., Yamada M., Tabata S., Watanabe M.M.;
RT   "Complete genomic structure of the bloom-forming toxic cyanobacterium
RT   Microcystis aeruginosa NIES-843.";
RL   DNA Res. 14:247-256(2007).
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:0000255|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:0000255|HAMAP-Rule:MF_00204}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00204}.
CC   -!- DOMAIN: The beta-hairpin motif is involved in DNA binding.
CC       {ECO:0000255|HAMAP-Rule:MF_00204}.
CC   -!- SIMILARITY: Belongs to the UvrB family. {ECO:0000255|HAMAP-
CC       Rule:MF_00204}.
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DR   EMBL; AP009552; BAG03955.1; -; Genomic_DNA.
DR   RefSeq; WP_012266824.1; NC_010296.1.
DR   AlphaFoldDB; B0JR86; -.
DR   SMR; B0JR86; -.
DR   STRING; 449447.MAE_41330; -.
DR   PaxDb; B0JR86; -.
DR   PRIDE; B0JR86; -.
DR   EnsemblBacteria; BAG03955; BAG03955; MAE_41330.
DR   KEGG; mar:MAE_41330; -.
DR   PATRIC; fig|449447.4.peg.3739; -.
DR   eggNOG; COG0556; Bacteria.
DR   HOGENOM; CLU_009621_2_1_3; -.
DR   OMA; EYVDRMV; -.
DR   OrthoDB; 95696at2; -.
DR   BioCyc; MAER449447:MAE_RS17905-MON; -.
DR   Proteomes; UP000001510; 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:0004386; F:helicase activity; IEA:UniProtKB-KW.
DR   GO; GO:0006289; P:nucleotide-excision repair; IEA:UniProtKB-UniRule.
DR   GO; GO:0009432; P:SOS response; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.40.50.300; -; 3.
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   PANTHER; PTHR24029; PTHR24029; 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; SSF46600; 1.
DR   SUPFAM; SSF52540; SSF52540; 2.
DR   TIGRFAMs; TIGR00631; uvrb; 1.
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; Cytoplasm; DNA damage; DNA excision; DNA repair;
KW   Excision nuclease; Helicase; Hydrolase; Nucleotide-binding;
KW   Reference proteome; SOS response.
FT   CHAIN           1..667
FT                   /note="UvrABC system protein B"
FT                   /id="PRO_1000077906"
FT   DOMAIN          25..180
FT                   /note="Helicase ATP-binding"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00204"
FT   DOMAIN          429..595
FT                   /note="Helicase C-terminal"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00204"
FT   DOMAIN          626..661
FT                   /note="UVR"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00204"
FT   MOTIF           91..114
FT                   /note="Beta-hairpin"
FT   BINDING         38..45
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00204"
SQ   SEQUENCE   667 AA;  76625 MW;  08738E775195AA28 CRC64;
     MTAFQLQAPF QPTGDQPAAI DQLVDSLQNQ HRFQTLLGAT GTGKTFTIAA VIEKIGRPTL
     VLAHNKTLAA QLCNELRQFF PNNAVEYFIS YYDYYQPEAY IPVSDTYIEK SSSINDEIDM
     LRHSATRSLF ERRDVIVVAS ISCIYGLGMP AEYLKAAISL TVGQEFDQRQ LLRALVSVQY
     NRNDLELTRG RFRLKGDILE IVPAYEDRVI KIDFFGDEIE SIRYLDPLTG EVLQKLERIS
     IYPARHFVTP EERLEVACRD IKTELDNRLL ELEKAGKLLE AQRLDQRTRY DLEMLQEVGY
     CNGVENYSRH LAGRLAGEPP ECLVDYFPED WLLVVDESHV SVPQIRGMYN GDQSRKKVLI
     DHGFRLPSAA DNRPLKSEEF WQKVNQCIFV SATPGDWELE QSENRIVEQI IRPTGVLDPE
     IFVRPTEGQV DDLLGEIKER VQLNERVLIT TLTKRMAEDL TEYLQERGIK VRYLHSEIQS
     IQRIEIIQDL REGVFDVLIG VNLLREGLDL PEVSLVAILD ADKEGFLRAT RSLIQTIGRA
     ARHIRGQAIL YGDNLTDSMI NAIEETKRRR AIQQEYNQKH GIIPQPIVKR SSNSILAFLD
     ISRRLNSQQL EQVCENIEEL SLEQIPELIQ QLEAQMKEAA KNLEFESAAK YRDRIKQLRD
     KLLNHVR