ID A0A090BUD8_9GAMM Unreviewed; 1199 AA.
AC A0A090BUD8;
DT 26-NOV-2014, integrated into UniProtKB/TrEMBL.
DT 26-NOV-2014, sequence version 1.
DT 27-MAR-2024, entry version 49.
DE RecName: Full=RecBCD enzyme subunit RecB {ECO:0000256|HAMAP-Rule:MF_01485};
DE EC=3.1.11.5 {ECO:0000256|HAMAP-Rule:MF_01485};
DE AltName: Full=Exonuclease V subunit RecB {ECO:0000256|HAMAP-Rule:MF_01485};
DE Short=ExoV subunit RecB {ECO:0000256|HAMAP-Rule:MF_01485};
DE AltName: Full=Helicase/nuclease RecBCD subunit RecB {ECO:0000256|HAMAP-Rule:MF_01485};
GN Name=recB {ECO:0000256|HAMAP-Rule:MF_01485};
GN ORFNames=THII_0634 {ECO:0000313|EMBL:BAP54931.1};
OS Thioploca ingrica.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Thiotrichales;
OC Thiotrichaceae; Thioploca.
OX NCBI_TaxID=40754 {ECO:0000313|EMBL:BAP54931.1, ECO:0000313|Proteomes:UP000031623};
RN [1] {ECO:0000313|EMBL:BAP54931.1, ECO:0000313|Proteomes:UP000031623}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA Kojima H., Ogura Y., Yamamoto N., Togashi T., Mori H., Watanabe T.,
RA Nemoto F., Kurokawa K., Hayashi T., Fukui M.;
RT "Ecophysiology of Thioploca ingrica as revealed by the complete genome
RT sequence supplemented with proteomic evidence.";
RL ISME J. 0:0-0(2014).
CC -!- FUNCTION: A helicase/nuclease that prepares dsDNA breaks (DSB) for
CC recombinational DNA repair. Binds to DSBs and unwinds DNA via a highly
CC rapid and processive ATP-dependent bidirectional helicase activity.
CC Unwinds dsDNA until it encounters a Chi (crossover hotspot instigator)
CC sequence from the 3' direction. Cuts ssDNA a few nucleotides 3' to the
CC Chi site. The properties and activities of the enzyme are changed at
CC Chi. The Chi-altered holoenzyme produces a long 3'-ssDNA overhang and
CC facilitates RecA-binding to the ssDNA for homologous DNA recombination
CC and repair. Holoenzyme degrades any linearized DNA that is unable to
CC undergo homologous recombination. In the holoenzyme this subunit
CC contributes ATPase, 3'-5' helicase, exonuclease activity and loads RecA
CC onto ssDNA. {ECO:0000256|HAMAP-Rule:MF_01485}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + H2O = ADP + H(+) + phosphate; Xref=Rhea:RHEA:13065,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:30616,
CC ChEBI:CHEBI:43474, ChEBI:CHEBI:456216; EC=5.6.2.4;
CC Evidence={ECO:0000256|ARBA:ARBA00034618};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=Exonucleolytic cleavage (in the presence of ATP) in either
CC 5'- to 3'- or 3'- to 5'-direction to yield 5'-
CC phosphooligonucleotides.; EC=3.1.11.5; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_01485};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01485};
CC Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000256|HAMAP-Rule:MF_01485};
CC -!- SUBUNIT: Heterotrimer of RecB, RecC and RecD. All subunits contribute
CC to DNA-binding. Interacts with RecA. {ECO:0000256|HAMAP-Rule:MF_01485}.
CC -!- DOMAIN: The C-terminal domain has nuclease activity and interacts with
CC RecD. It interacts with RecA, facilitating its loading onto ssDNA.
CC {ECO:0000256|HAMAP-Rule:MF_01485}.
CC -!- DOMAIN: The N-terminal DNA-binding domain is a ssDNA-dependent ATPase
CC and has ATP-dependent 3'-5' helicase function. This domain interacts
CC with RecC. {ECO:0000256|HAMAP-Rule:MF_01485}.
CC -!- SIMILARITY: Belongs to the helicase family. UvrD subfamily.
CC {ECO:0000256|HAMAP-Rule:MF_01485}.
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DR EMBL; AP014633; BAP54931.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A090BUD8; -.
DR STRING; 40754.THII_0634; -.
DR KEGG; tig:THII_0634; -.
DR HOGENOM; CLU_001114_6_1_6; -.
DR OrthoDB; 9810135at2; -.
DR Proteomes; UP000031623; Chromosome.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0016887; F:ATP hydrolysis activity; IEA:RHEA.
DR GO; GO:0003677; F:DNA binding; IEA:UniProtKB-UniRule.
DR GO; GO:0003678; F:DNA helicase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0008854; F:exodeoxyribonuclease V activity; IEA:UniProtKB-EC.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0000724; P:double-strand break repair via homologous recombination; IEA:UniProtKB-UniRule.
DR CDD; cd22352; RecB_C-like; 1.
DR Gene3D; 3.90.320.10; -; 1.
DR Gene3D; 3.40.50.300; P-loop containing nucleotide triphosphate hydrolases; 2.
DR Gene3D; 1.10.3170.10; Recbcd, chain B, domain 2; 1.
DR HAMAP; MF_01485; RecB; 1.
DR InterPro; IPR014017; DNA_helicase_UvrD-like_C.
DR InterPro; IPR000212; DNA_helicase_UvrD/REP.
DR InterPro; IPR027417; P-loop_NTPase.
DR InterPro; IPR011604; PDDEXK-like_dom_sf.
DR InterPro; IPR004586; RecB.
DR InterPro; IPR011335; Restrct_endonuc-II-like.
DR InterPro; IPR014016; UvrD-like_ATP-bd.
DR NCBIfam; TIGR00609; recB; 1.
DR PANTHER; PTHR11070:SF23; RECBCD ENZYME SUBUNIT RECB; 1.
DR PANTHER; PTHR11070; UVRD / RECB / PCRA DNA HELICASE FAMILY MEMBER; 1.
DR Pfam; PF00580; UvrD-helicase; 1.
DR Pfam; PF13361; UvrD_C; 2.
DR SUPFAM; SSF52540; P-loop containing nucleoside triphosphate hydrolases; 1.
DR SUPFAM; SSF52980; Restriction endonuclease-like; 1.
DR PROSITE; PS51198; UVRD_HELICASE_ATP_BIND; 1.
DR PROSITE; PS51217; UVRD_HELICASE_CTER; 1.
PE 3: Inferred from homology;
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW Rule:MF_01485};
KW DNA damage {ECO:0000256|ARBA:ARBA00022763, ECO:0000256|HAMAP-
KW Rule:MF_01485};
KW DNA repair {ECO:0000256|ARBA:ARBA00023204, ECO:0000256|HAMAP-
KW Rule:MF_01485};
KW DNA-binding {ECO:0000256|ARBA:ARBA00023125, ECO:0000256|HAMAP-
KW Rule:MF_01485};
KW Exonuclease {ECO:0000256|ARBA:ARBA00022839, ECO:0000256|HAMAP-
KW Rule:MF_01485};
KW Helicase {ECO:0000256|ARBA:ARBA00022806, ECO:0000256|HAMAP-Rule:MF_01485};
KW Hydrolase {ECO:0000256|ARBA:ARBA00022801, ECO:0000256|HAMAP-Rule:MF_01485};
KW Magnesium {ECO:0000256|ARBA:ARBA00022842, ECO:0000256|HAMAP-Rule:MF_01485};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_01485};
KW Nuclease {ECO:0000256|ARBA:ARBA00022722, ECO:0000256|HAMAP-Rule:MF_01485};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_01485}; Reference proteome {ECO:0000313|Proteomes:UP000031623}.
FT DOMAIN 5..455
FT /note="UvrD-like helicase ATP-binding"
FT /evidence="ECO:0000259|PROSITE:PS51198"
FT DOMAIN 489..759
FT /note="UvrD-like helicase C-terminal"
FT /evidence="ECO:0000259|PROSITE:PS51217"
FT REGION 1..867
FT /note="DNA-binding and helicase activity, interacts with
FT RecC"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT REGION 913..1199
FT /note="Nuclease activity, interacts with RecD and RecA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT ACT_SITE 1104
FT /note="For nuclease activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 26..33
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00560"
FT BINDING 973
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 1091
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 1104
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
SQ SEQUENCE 1199 AA; 138094 MW; 60FD806F5C53ADA5 CRC64;
MATAHFPIES LDPISIPLQG INLIEASAGT GKTYTITTLF IRLILEKKLL INRILVVTFT
EAATEELRDR IRRRLYETLL AFQQGQSQDP VLTRLIQQYT EPNEAILRLK NALRGFDEAA
IFTIHSFCRQ MLQGNAFESG VLFDTELVSD QAYLLREIVE DFWRQHFYQA SPLWVSYLLN
QGYHQPSKLL KILNYGQYVG QPFLNKIPQI ELPVTAAKEF AFYTAFTAAQ QTWQGHSAQI
EELLLQDTHL NGTKYKKSSI PQWCKAVARF LNAPWRSIQL PDKWIKFTQA ELINSVKQGK
TAPQHIFFEQ SEQLWHCQQA LAAGFEQQLL ALKIKLFTVA EQALAQKKHQ HHIQSFDDLL
LNLYRALTTP RGHYLTQLIR YKYHAALIDE FQDTDPVQYD IFRTLYGAGS DGLLFLIGDP
KQAIYSFRGA DIFTYMAACR DAQQHYTLAT NWRSEPNLIQ AVNQLFAKVA HPFMFAAIPF
QPVQAPAQQQ LSSFSNRLKI ENKYLPPLQI WFVPRQLAHG PPDKPINKSW AKQQIPLTVA
NEIARLLMLG QLGQALIGDK PVVAGDIAVL VRTHAQAQRL QKVLTQLQIP SVLYSRDSLF
ASHEIREIER LLLAIADPSD EGLIKSALTT DMLGLSGHDL YQLLDNENAW QTYLNRFQYY
HFLWQHVGFI QMYRTLLMTE QVQSRLLTYP DGERRLTNVL HAAELLQQVT VQQNRGISGL
CQWLAQQRAQ AGTIAEEQQL RLESDEKRVK IVTIHKSKGL EYPIVFCPFV WDGYLYSHKA
EPLIFHNEQE QLTLDLGSLE QEHHRQRAAA EERAENLRLF YVAVTRAKHR CYLIWGAFRD
AGTSALAHLL HPGKVIEETD DATLWQDLHH LASQAEPAIQ LAPLPTDHPP YQRQREPTAK
LRARYFKGHI DKTWRVASFT ALSSPATVTD TIEKPDYDEF ASNRSSGINS LILSDKSPIF
NFPRGARAGS FMHALFEKLD FTQPEMKLVT EQLAHFNYEV DQWHEVIVNW VTQVIGTPLE
PQRPTFTLSQ ISLNHRLNEL EFYYPLAPIT SQGLQTLFAE FGTSLPLNSL TQHQTELQFL
PVQGLMKGFI DMVFEYEGRY YLVDYKSNLL GTQMHAYHHS QLNAVIIKEA YWLQYHIYVV
ALHRYLANRL SHYRYEDHFG GVYYLFLRGM RPQWGAHYGI YRDLPSVKLI EKLSAYFDN
//
