ID   KU70_CRYNB              Reviewed;         560 AA.
AC   P0CO51; Q55MT9; Q5KB66;
DT   28-JUN-2011, integrated into UniProtKB/Swiss-Prot.
DT   28-JUN-2011, sequence version 1.
DT   25-MAY-2022, entry version 52.
DE   RecName: Full=ATP-dependent DNA helicase II subunit 1;
DE            EC=3.6.4.12;
DE   AltName: Full=ATP-dependent DNA helicase II subunit Ku70;
GN   Name=KU70; OrderedLocusNames=CNBH3450;
OS   Cryptococcus neoformans var. neoformans serotype D (strain B-3501A)
OS   (Filobasidiella neoformans).
OC   Eukaryota; Fungi; Dikarya; Basidiomycota; Agaricomycotina; Tremellomycetes;
OC   Tremellales; Cryptococcaceae; Cryptococcus;
OC   Cryptococcus neoformans species complex.
OX   NCBI_TaxID=283643;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=B-3501A;
RX   PubMed=15653466; DOI=10.1126/science.1103773;
RA   Loftus B.J., Fung E., Roncaglia P., Rowley D., Amedeo P., Bruno D.,
RA   Vamathevan J., Miranda M., Anderson I.J., Fraser J.A., Allen J.E.,
RA   Bosdet I.E., Brent M.R., Chiu R., Doering T.L., Donlin M.J., D'Souza C.A.,
RA   Fox D.S., Grinberg V., Fu J., Fukushima M., Haas B.J., Huang J.C.,
RA   Janbon G., Jones S.J.M., Koo H.L., Krzywinski M.I., Kwon-Chung K.J.,
RA   Lengeler K.B., Maiti R., Marra M.A., Marra R.E., Mathewson C.A.,
RA   Mitchell T.G., Pertea M., Riggs F.R., Salzberg S.L., Schein J.E.,
RA   Shvartsbeyn A., Shin H., Shumway M., Specht C.A., Suh B.B., Tenney A.,
RA   Utterback T.R., Wickes B.L., Wortman J.R., Wye N.H., Kronstad J.W.,
RA   Lodge J.K., Heitman J., Davis R.W., Fraser C.M., Hyman R.W.;
RT   "The genome of the basidiomycetous yeast and human pathogen Cryptococcus
RT   neoformans.";
RL   Science 307:1321-1324(2005).
CC   -!- FUNCTION: Single-stranded DNA-dependent ATP-dependent helicase.
CC       Involved in non-homologous end joining (NHEJ) DNA double strand break
CC       repair. DNA-binding is sequence-independent but has a high affinity to
CC       nicks in double-stranded DNA and to the ends of duplex DNA. Binds to
CC       naturally occurring chromosomal ends, and therefore provides
CC       chromosomal end protection. Required also for telomere recombination to
CC       repair telomeric ends in the absence of telomerase. KU70, of the
CC       KU70/KU80 heterodimer, binds to the stem loop of TLC1, the RNA
CC       component of telomerase. Involved in telomere maintenance. Interacts
CC       with telomeric repeats and subtelomeric sequences thereby controlling
CC       telomere length and protecting against subtelomeric rearrangement.
CC       Maintains telomeric chromatin, which is involved in silencing the
CC       expression of genes located at the telomere. Required for mating-type
CC       switching (By similarity). {ECO:0000250}.
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   -!- SUBUNIT: Heterodimer of Ku70 and Ku80. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Nucleus {ECO:0000250}. Chromosome, telomere
CC       {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the ku70 family. {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=EAL19246.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305};
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DR   EMBL; AAEY01000042; EAL19246.1; ALT_SEQ; Genomic_DNA.
DR   RefSeq; XP_773893.1; XM_768800.1.
DR   AlphaFoldDB; P0CO51; -.
DR   SMR; P0CO51; -.
DR   EnsemblFungi; EAL19246; EAL19246; CNBH3450.
DR   GeneID; 4937872; -.
DR   KEGG; cnb:CNBH3450; -.
DR   HOGENOM; CLU_014815_3_0_1; -.
DR   Proteomes; UP000001435; Chromosome 8.
DR   GO; GO:0000781; C:chromosome, telomeric region; IEA:UniProtKB-SubCell.
DR   GO; GO:0043564; C:Ku70:Ku80 complex; IEA:InterPro.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR   GO; GO:0016887; F:ATP hydrolysis activity; IEA:RHEA.
DR   GO; GO:0003684; F:damaged DNA binding; IEA:InterPro.
DR   GO; GO:0003678; F:DNA helicase activity; IEA:UniProtKB-EC.
DR   GO; GO:0042162; F:telomeric DNA binding; IEA:InterPro.
DR   GO; GO:0006310; P:DNA recombination; IEA:UniProtKB-KW.
DR   GO; GO:0006303; P:double-strand break repair via nonhomologous end joining; IEA:InterPro.
DR   GO; GO:0000723; P:telomere maintenance; IEA:InterPro.
DR   Gene3D; 2.40.290.10; -; 1.
DR   Gene3D; 3.40.50.410; -; 1.
DR   InterPro; IPR006165; Ku70.
DR   InterPro; IPR006164; Ku70/Ku80_beta-barrel_dom.
DR   InterPro; IPR005160; Ku_C.
DR   InterPro; IPR005161; Ku_N.
DR   InterPro; IPR016194; SPOC-like_C_dom_sf.
DR   InterPro; IPR036465; vWFA_dom_sf.
DR   PANTHER; PTHR12604:SF2; PTHR12604:SF2; 2.
DR   Pfam; PF02735; Ku; 1.
DR   Pfam; PF03730; Ku_C; 1.
DR   Pfam; PF03731; Ku_N; 1.
DR   PIRSF; PIRSF003033; Ku70; 1.
DR   SMART; SM00559; Ku78; 1.
DR   SUPFAM; SSF100939; SSF100939; 1.
DR   SUPFAM; SSF53300; SSF53300; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Chromosome; DNA damage; DNA recombination; DNA repair;
KW   DNA-binding; Helicase; Hydrolase; Nucleotide-binding; Nucleus; Telomere.
FT   CHAIN           1..560
FT                   /note="ATP-dependent DNA helicase II subunit 1"
FT                   /id="PRO_0000410130"
FT   DOMAIN          224..413
FT                   /note="Ku"
FT   REGION          541..560
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   560 AA;  63992 MW;  082D9D300EFE4667 CRC64;
     MSSYYNKGDA PSWEALDQDG LDDVIDTSEP SAVAEDPGNY QPGNYVFQTL RTINAEEMKR
     LVKLMQTAKE QYEAQDDDET VETTEPEILR KTFPPIEESH EMNIANVIQT CNFLFRDGGT
     QLRGNKRVFW ITDNDMPPGM NNRQPARTSY GDLTTYGVTA ETFFIDRPDH RFNPNIFWND
     ILDREAIDYN DDQPDPEGLS SLADLMKDLV IKTSPKRTHF HVPLKLGKDG EIVIGVSGCS
     MVSEQGKGAS RYVKMRGQVV EEVQSKTEYT SAKSLNSGQW GSNPIKVLGF QAASQLRFQD
     NLKHPFFIYP NEEEYTGSTR TFAALLNSCL KYNRHALALC RLRSNHVPEF CVLIPQEEKT
     SSNGQEYPPG FHLIILPYKD SIRPPPKKVA EFLQSPPIAT DEQINAMKAV IKRTRFKAAA
     YRPEIYPNPS LAYHYDQLQA LAFEEDWDPE DPAKQALDKT MPLYGGMHSR AGEFMEEFNK
     EIENDERAVE KLAAPTKRGK AEKETTVNEW DLRNIPDMWK KGTLSQLSIL ARLRLRRRPF
     TGQNQKGGYH RRRIRTSFHK