ID APTX_DANRE Reviewed; 324 AA.
AC P61799;
DT 07-JUN-2004, integrated into UniProtKB/Swiss-Prot.
DT 07-JUN-2004, sequence version 1.
DT 27-MAR-2024, entry version 109.
DE RecName: Full=Aprataxin;
DE EC=3.6.1.71 {ECO:0000250|UniProtKB:Q7Z2E3};
DE EC=3.6.1.72 {ECO:0000250|UniProtKB:O74859};
DE AltName: Full=Forkhead-associated domain histidine triad-like protein;
DE Short=FHA-HIT;
GN Name=aptx;
OS Danio rerio (Zebrafish) (Brachydanio rerio).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Cypriniformes;
OC Danionidae; Danioninae; Danio.
OX NCBI_TaxID=7955;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RA Huang C.-H.;
RT "Cloning and sequence analysis of FHA-HIT in zebrafish.";
RL Submitted (JAN-2003) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: DNA-binding protein involved in single-strand DNA break
CC repair, double-strand DNA break repair and base excision repair.
CC Resolves abortive DNA ligation intermediates formed either at base
CC excision sites, or when DNA ligases attempt to repair non-ligatable
CC breaks induced by reactive oxygen species. Catalyzes the release of
CC adenylate groups covalently linked to 5'-phosphate termini, resulting
CC in the production of 5'-phosphate termini that can be efficiently
CC rejoined. Also able to hydrolyze adenosine 5'-monophosphoramidate (AMP-
CC NH(2)) and diadenosine tetraphosphate (AppppA), but with lower
CC catalytic activity (By similarity). Likewise, catalyzes the release of
CC 3'-linked guanosine (DNAppG) and inosine (DNAppI) from DNA, but has
CC higher specific activity with 5'-linked adenosine (AppDNA) (By
CC similarity). {ECO:0000250|UniProtKB:O74859,
CC ECO:0000250|UniProtKB:Q7Z2E3}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a 5'-end adenosine-5'-diphospho-5'-(2'-deoxyribonucleoside)-
CC DNA + H2O = a 5'-end 5'-monophospho-2'-deoxyribonucleoside-DNA + AMP
CC + 2 H(+); Xref=Rhea:RHEA:52128, Rhea:RHEA-COMP:13180, Rhea:RHEA-
CC COMP:13181, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:136412,
CC ChEBI:CHEBI:136413, ChEBI:CHEBI:456215; EC=3.6.1.71;
CC Evidence={ECO:0000250|UniProtKB:Q7Z2E3};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a 5'-end adenosine-5'-diphospho-5'-ribonucleoside-2'-
CC deoxyribonucleotide-DNA + H2O = a 5'-end 5'-monophospho-
CC ribonucleoside-2'-deoxyribonucleotide-DNA + AMP + 2 H(+);
CC Xref=Rhea:RHEA:52132, Rhea:RHEA-COMP:13182, Rhea:RHEA-COMP:13183,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:136414,
CC ChEBI:CHEBI:136415, ChEBI:CHEBI:456215; EC=3.6.1.71;
CC Evidence={ECO:0000250|UniProtKB:Q7Z2E3};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a 3'-end 2'-deoxyribonucleotide-3'-diphospho-5'-guanosine-DNA
CC + H2O = a 3'-end 2'-deoxyribonucleotide 3'-phosphate-DNA + GMP + 2
CC H(+); Xref=Rhea:RHEA:52140, Rhea:RHEA-COMP:13186, Rhea:RHEA-
CC COMP:13187, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:58115,
CC ChEBI:CHEBI:136419, ChEBI:CHEBI:136420; EC=3.6.1.72;
CC Evidence={ECO:0000250|UniProtKB:O74859};
CC -!- SUBCELLULAR LOCATION: Nucleus, nucleoplasm
CC {ECO:0000250|UniProtKB:Q7Z2E3}. Nucleus, nucleolus
CC {ECO:0000250|UniProtKB:Q7Z2E3}.
CC -!- DOMAIN: The histidine triad, also called HIT motif, forms part of the
CC binding loop for the alpha-phosphate of purine mononucleotide.
CC {ECO:0000250|UniProtKB:Q7Z2E3}.
CC -!- DOMAIN: The HIT domain is required for enzymatic activity.
CC {ECO:0000250}.
CC -!- DOMAIN: The C2H2-type zinc finger mediates DNA-binding. {ECO:0000250}.
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DR EMBL; AY219903; AAP45147.1; -; mRNA.
DR RefSeq; NP_999894.1; NM_214729.1.
DR AlphaFoldDB; P61799; -.
DR SMR; P61799; -.
DR STRING; 7955.ENSDARP00000035368; -.
DR PaxDb; 7955-ENSDARP00000035368; -.
DR GeneID; 405797; -.
DR KEGG; dre:405797; -.
DR AGR; ZFIN:ZDB-GENE-040628-2; -.
DR CTD; 54840; -.
DR ZFIN; ZDB-GENE-040628-2; aptx.
DR eggNOG; KOG0562; Eukaryota.
DR eggNOG; KOG2134; Eukaryota.
DR InParanoid; P61799; -.
DR OrthoDB; 12181at2759; -.
DR PhylomeDB; P61799; -.
DR PRO; PR:P61799; -.
DR Proteomes; UP000000437; Chromosome 1.
DR GO; GO:0005730; C:nucleolus; IEA:UniProtKB-SubCell.
DR GO; GO:0005654; C:nucleoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0005634; C:nucleus; IBA:GO_Central.
DR GO; GO:0033699; F:DNA 5'-adenosine monophosphate hydrolase activity; IBA:GO_Central.
DR GO; GO:0120108; F:DNA-3'-diphospho-5'-guanosine diphosphatase; IEA:UniProtKB-EC.
DR GO; GO:0003725; F:double-stranded RNA binding; IBA:GO_Central.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0030983; F:mismatched DNA binding; IBA:GO_Central.
DR GO; GO:1990165; F:single-strand break-containing DNA binding; IBA:GO_Central.
DR GO; GO:0003697; F:single-stranded DNA binding; IBA:GO_Central.
DR GO; GO:0000012; P:single strand break repair; IBA:GO_Central.
DR CDD; cd01278; aprataxin_related; 1.
DR CDD; cd22735; FHA_APTX; 1.
DR Gene3D; 2.60.200.20; -; 1.
DR Gene3D; 3.30.428.10; HIT-like; 1.
DR InterPro; IPR041388; FHA_2.
DR InterPro; IPR047289; FHA_APTX.
DR InterPro; IPR019808; Histidine_triad_CS.
DR InterPro; IPR011146; HIT-like.
DR InterPro; IPR036265; HIT-like_sf.
DR InterPro; IPR008984; SMAD_FHA_dom_sf.
DR InterPro; IPR032566; Znf-C2HE.
DR InterPro; IPR013087; Znf_C2H2_type.
DR PANTHER; PTHR12486:SF4; APRATAXIN; 1.
DR PANTHER; PTHR12486; APRATAXIN-RELATED; 1.
DR Pfam; PF11969; DcpS_C; 1.
DR Pfam; PF17913; FHA_2; 1.
DR Pfam; PF16278; zf-C2HE; 1.
DR SUPFAM; SSF54197; HIT-like; 1.
DR SUPFAM; SSF49879; SMAD/FHA domain; 1.
DR PROSITE; PS00892; HIT_1; 1.
DR PROSITE; PS51084; HIT_2; 1.
DR PROSITE; PS50157; ZINC_FINGER_C2H2_2; 1.
PE 2: Evidence at transcript level;
KW DNA damage; DNA repair; DNA-binding; Hydrolase; Metal-binding; Nucleus;
KW Reference proteome; Zinc; Zinc-finger.
FT CHAIN 1..324
FT /note="Aprataxin"
FT /id="PRO_0000109844"
FT DOMAIN 23..72
FT /note="FHA-like"
FT DOMAIN 150..255
FT /note="HIT"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00464"
FT ZN_FING 299..321
FT /note="C2H2-type"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00042"
FT REGION 100..160
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 175..179
FT /note="Interaction with DNA substrate"
FT /evidence="ECO:0000250|UniProtKB:Q7Z2E3"
FT REGION 237..238
FT /note="Interaction with DNA substrate"
FT /evidence="ECO:0000250|UniProtKB:Q7Z2E3"
FT MOTIF 240..244
FT /note="Histidine triad motif"
FT COMPBIAS 109..129
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 242
FT /note="Tele-AMP-histidine intermediate"
FT /evidence="ECO:0000250|UniProtKB:Q7Z2E3"
FT SITE 156
FT /note="Interaction with DNA substrate"
FT /evidence="ECO:0000250|UniProtKB:Q7Z2E3"
FT SITE 233
FT /note="Interaction with DNA substrate"
FT /evidence="ECO:0000250|UniProtKB:Q7Z2E3"
FT SITE 244
FT /note="Interaction with DNA substrate"
FT /evidence="ECO:0000250|UniProtKB:Q7Z2E3"
FT SITE 259
FT /note="Interaction with DNA substrate"
FT /evidence="ECO:0000250|UniProtKB:Q7Z2E3"
SQ SEQUENCE 324 AA; 36522 MW; 997763F9EF1A1440 CRC64;
MPVCLLVSED NSHKPIELHH QQSVTLGRGP DTKIKDKKCS REQVELRADC NRGFVTVKQL
GVNPTLVDDV VVGKGNQVSI KPGQSLYMVN QQYPYSVKFT EDTSRSKPSK RAQQIQSPTK
TTADVSDSPP PPKKTTPPAG EKSESAGHWS QGLKASMQDP KMQVYKDDSV VVIKDKYPKA
RYHWLVLPWQ SISSLKALRS EHVELLKHMQ RVADQMVEQC PDAHKLSFRL GYHAIPSMSH
VHLHVISQDF DSPCLKNKKH WNSFTTDYFV ESQDVISMLE HDGKVQVKEG AGELLKLPLR
CHVCGKEQTT IPKLKDHLKT HLPS
//
