ID A0A160SVK9_9CAUD Unreviewed; 570 AA.
AC A0A160SVK9;
DT 06-JUL-2016, integrated into UniProtKB/TrEMBL.
DT 06-JUL-2016, sequence version 1.
DT 27-MAR-2024, entry version 31.
DE RecName: Full=DNA helicase/primase {ECO:0000256|HAMAP-Rule:MF_04154};
DE EC=2.7.7.- {ECO:0000256|HAMAP-Rule:MF_04154};
DE EC=3.6.4.12 {ECO:0000256|HAMAP-Rule:MF_04154};
GN ORFNames=SHL_00005 {ECO:0000313|EMBL:CUR50695.1};
OS Pseudomonas phage shl2.
OC Viruses; Duplodnaviria; Heunggongvirae; Uroviricota; Caudoviricetes;
OC Autographiviridae; Studiervirinae; Ghunavirus; Ghunavirus shl2.
OX NCBI_TaxID=1729933 {ECO:0000313|EMBL:CUR50695.1, ECO:0000313|Proteomes:UP000273619};
RN [1] {ECO:0000313|Proteomes:UP000273619}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA Millard A.;
RL Submitted (OCT-2015) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: ATP-dependent DNA helicase and primase essential for viral
CC DNA replication and recombination. The helicase moves 5' -> 3' on the
CC lagging strand template, unwinding the DNA duplex ahead of the leading
CC strand polymerase at the replication fork and generating ssDNA for both
CC leading and lagging strand synthesis. ATP or dTTP hydrolysis propels
CC each helicase domain to translocate sequentially along DNA. Mediates
CC strand transfer when a joint molecule is available and participates in
CC recombinational DNA repair through its role in strand exchange. Primase
CC activity synthesizes short RNA primers at the sequence 5'-GTC-3' on the
CC lagging strand that the polymerase elongates using dNTPs and providing
CC the primase is still present. {ECO:0000256|HAMAP-Rule:MF_04154}.
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=3.6.4.12;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_04154};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_04154};
CC Note=Binds 2 Mg(2+), one of which is catalytic. {ECO:0000256|HAMAP-
CC Rule:MF_04154};
CC -!- SUBUNIT: Homohexamer. Assembles as a hexamer onto linear or circular
CC ssDNA in the presence of ATP or dTTP. Interacts (via C-terminus) with
CC the viral DNA polymerase that is bound to DNA; this interaction is
CC essential to initiate leading-strand DNA synthesis. The priming complex
CC consists of 2 DNA polymerases and 1 helicase-primase hexamer that
CC assemble on the DNA template. Interacts with the single-stranded DNA-
CC binding protein. Part of the replicase complex that includes the DNA
CC polymerase, the primase/helicase and the single-stranded DNA binding
CC protein. {ECO:0000256|HAMAP-Rule:MF_04154}.
CC -!- DOMAIN: The N-terminus zinc finger domain is essential for delivering
CC the primed DNA template to the DNA polymerase. The central core domain
CC contains the primase activity. The C-terminus region is responsible for
CC the helicase activity and binds 1 Mg(2+)-dTTP. {ECO:0000256|HAMAP-
CC Rule:MF_04154}.
CC -!- SIMILARITY: Belongs to the Teseptimavirus DNA helicase/primase family.
CC {ECO:0000256|HAMAP-Rule:MF_04154}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_04154}.
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DR EMBL; LN889756; CUR50695.1; -; Genomic_DNA.
DR Proteomes; UP000273619; Chromosome 1.
DR GO; GO:0043139; F:5'-3' DNA helicase activity; IEA:InterPro.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0003896; F:DNA primase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0016787; F:hydrolase activity; IEA:UniProtKB-KW.
DR GO; GO:0003697; F:single-stranded DNA binding; IEA:InterPro.
DR GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0039693; P:viral DNA genome replication; IEA:UniProtKB-UniRule.
DR CDD; cd19483; RecA-like_Gp4D_helicase; 1.
DR CDD; cd01029; TOPRIM_primases; 1.
DR Gene3D; 2.20.25.10; -; 1.
DR Gene3D; 2.20.25.180; -; 1.
DR Gene3D; 3.40.1360.10; -; 1.
DR Gene3D; 3.40.50.300; P-loop containing nucleotide triphosphate hydrolases; 1.
DR HAMAP; MF_04154; Helic_Prim_T7; 1.
DR InterPro; IPR007694; DNA_helicase_DnaB-like_C.
DR InterPro; IPR048774; Helic-prim_T7_N.
DR InterPro; IPR046394; Helic_Prim_T7.
DR InterPro; IPR027417; P-loop_NTPase.
DR InterPro; IPR013237; Phage_T7_Gp4_N.
DR InterPro; IPR034154; TOPRIM_DnaG/twinkle.
DR InterPro; IPR006171; TOPRIM_domain.
DR InterPro; IPR027032; Twinkle-like.
DR PANTHER; PTHR12873; T7-LIKE MITOCHONDRIAL DNA HELICASE; 1.
DR PANTHER; PTHR12873:SF0; TWINKLE MTDNA HELICASE; 1.
DR Pfam; PF03796; DnaB_C; 1.
DR Pfam; PF21268; Helic-prim_T7_N; 1.
DR Pfam; PF13155; Toprim_2; 1.
DR SMART; SM00778; Prim_Zn_Ribbon; 1.
DR SMART; SM00493; TOPRIM; 1.
DR SUPFAM; SSF56731; DNA primase core; 1.
DR SUPFAM; SSF52540; P-loop containing nucleoside triphosphate hydrolases; 1.
DR SUPFAM; SSF57783; Zinc beta-ribbon; 1.
DR PROSITE; PS51199; SF4_HELICASE; 1.
DR PROSITE; PS50880; TOPRIM; 1.
PE 3: Inferred from homology;
KW ATP-binding {ECO:0000256|HAMAP-Rule:MF_04154};
KW DNA replication {ECO:0000256|HAMAP-Rule:MF_04154};
KW Helicase {ECO:0000256|HAMAP-Rule:MF_04154, ECO:0000313|EMBL:CUR50695.1};
KW Hydrolase {ECO:0000256|HAMAP-Rule:MF_04154};
KW Magnesium {ECO:0000256|HAMAP-Rule:MF_04154};
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_04154};
KW Multifunctional enzyme {ECO:0000256|HAMAP-Rule:MF_04154};
KW Nucleotide-binding {ECO:0000256|HAMAP-Rule:MF_04154,
KW ECO:0000313|EMBL:CUR50695.1};
KW Nucleotidyltransferase {ECO:0000256|HAMAP-Rule:MF_04154};
KW Primosome {ECO:0000256|HAMAP-Rule:MF_04154};
KW Reference proteome {ECO:0000313|Proteomes:UP000273619};
KW Transferase {ECO:0000256|HAMAP-Rule:MF_04154};
KW Viral DNA replication {ECO:0000256|HAMAP-Rule:MF_04154};
KW Zinc {ECO:0000256|HAMAP-Rule:MF_04154};
KW Zinc-finger {ECO:0000256|HAMAP-Rule:MF_04154}.
FT DOMAIN 156..243
FT /note="Toprim"
FT /evidence="ECO:0000259|PROSITE:PS50880"
FT DOMAIN 283..547
FT /note="SF4 helicase"
FT /evidence="ECO:0000259|PROSITE:PS51199"
FT ZN_FING 18..40
FT /note="C4-like; zinc ribbon fold"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_04154"
FT REGION 546..570
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 546..562
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 18
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_04154"
FT BINDING 21
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_04154"
FT BINDING 37
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_04154"
FT BINDING 40
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_04154"
FT BINDING 162
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_04154"
FT BINDING 212
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_04154"
FT BINDING 242
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_04154"
FT BINDING 314..321
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_04154"
FT SITE 363
FT /note="dTTP/dATP binding"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_04154"
FT SITE 464
FT /note="dTTP/dATP binding"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_04154"
FT SITE 503
FT /note="dTTP/dATP binding"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_04154"
FT SITE 521
FT /note="dTTP/dATP binding"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_04154"
FT SITE 534
FT /note="dTTP/dATP binding"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_04154"
SQ SEQUENCE 570 AA; 63023 MW; A4DC6CEAB07232F6 CRC64;
MSSRDDQEES VFIRHIPCET CGSSDANSLF SDGHQYCFAC SPDEAYKAPD GKDRGQGGRE
TKRHADTLVM SECSGRYQDL PARFLQESIC RLYGYWVGKA WTPSAGKVVP VQVANYYDAQ
GNLQSQKVRD ASKEFCTKGD HSKEALFGRH LWNGGRKIVV TEGEIDCLTV AQLQGGKYPV
VSIGHGSKAA KKTCAANYEY FDQFDEIILM FDMDEPGRLA SQEAAEVLPP GKVKIAVLPF
KDPNECVQQK NAKAVMDAMW NASPFVPDGV VSAKSLKARI KEKKIIPSMP LEAPHELREM
TKDFREGEVI LVTSGSGSGK STFVRQNTYN LFHNEGIPVG VAMLEEAVEE TVQDIVGLHM
GSRVRQNPDE TTEEMFDAAF DEIFESDKLF LYDAFAEAAE DRLLAKLGYM VAAEGCKVIV
LDHISIVVSA MDGDNDERKT IDRLMTKLKS FAKSKGVAVF VICHLKNPDK GKPHEEGRPV
SATDLRGSGG LRQLSDTIIA VERNQQGANP NLILFRILKC RFTGETGIAG YMEYDKRTGR
LVAKPHGWRP DAEEDDTEKT EAAWAGQGDF
//
