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CAS1B_PYRAE
ID   CAS1B_PYRAE             Reviewed;         295 AA.
AC   Q8ZZL8;
DT   16-MAY-2012, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2002, sequence version 1.
DT   03-AUG-2022, entry version 84.
DE   RecName: Full=CRISPR-associated endonuclease Cas1 2 {ECO:0000255|HAMAP-Rule:MF_01470};
DE            EC=3.1.-.- {ECO:0000255|HAMAP-Rule:MF_01470};
GN   Name=cas1-2 {ECO:0000255|HAMAP-Rule:MF_01470}; OrderedLocusNames=PAE0200;
OS   Pyrobaculum aerophilum (strain ATCC 51768 / DSM 7523 / JCM 9630 / CIP
OS   104966 / NBRC 100827 / IM2).
OC   Archaea; Crenarchaeota; Thermoprotei; Thermoproteales; Thermoproteaceae;
OC   Pyrobaculum.
OX   NCBI_TaxID=178306;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 51768 / DSM 7523 / JCM 9630 / CIP 104966 / NBRC 100827 / IM2;
RX   PubMed=11792869; DOI=10.1073/pnas.241636498;
RA   Fitz-Gibbon S.T., Ladner H., Kim U.-J., Stetter K.O., Simon M.I.,
RA   Miller J.H.;
RT   "Genome sequence of the hyperthermophilic crenarchaeon Pyrobaculum
RT   aerophilum.";
RL   Proc. Natl. Acad. Sci. U.S.A. 99:984-989(2002).
CC   -!- FUNCTION: CRISPR (clustered regularly interspaced short palindromic
CC       repeat), is an adaptive immune system that provides protection against
CC       mobile genetic elements (viruses, transposable elements and conjugative
CC       plasmids). CRISPR clusters contain spacers, sequences complementary to
CC       antecedent mobile elements, and target invading nucleic acids. CRISPR
CC       clusters are transcribed and processed into CRISPR RNA (crRNA). Acts as
CC       a dsDNA endonuclease. Involved in the integration of spacer DNA into
CC       the CRISPR cassette. {ECO:0000255|HAMAP-Rule:MF_01470}.
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01470};
CC       Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01470};
CC   -!- SUBUNIT: Homodimer, forms a heterotetramer with a Cas2 homodimer.
CC       {ECO:0000255|HAMAP-Rule:MF_01470}.
CC   -!- SIMILARITY: Belongs to the CRISPR-associated endonuclease Cas1 family.
CC       {ECO:0000255|HAMAP-Rule:MF_01470}.
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DR   EMBL; AE009441; AAL62621.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q8ZZL8; -.
DR   SMR; Q8ZZL8; -.
DR   STRING; 178306.PAE0200; -.
DR   EnsemblBacteria; AAL62621; AAL62621; PAE0200.
DR   KEGG; pai:PAE0200; -.
DR   PATRIC; fig|178306.9.peg.143; -.
DR   eggNOG; arCOG01452; Archaea.
DR   HOGENOM; CLU_052779_0_0_2; -.
DR   InParanoid; Q8ZZL8; -.
DR   OMA; LYPPQNR; -.
DR   Proteomes; UP000002439; Chromosome.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0004519; F:endonuclease activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0051607; P:defense response to virus; IEA:UniProtKB-UniRule.
DR   GO; GO:0043571; P:maintenance of CRISPR repeat elements; IEA:UniProtKB-UniRule.
DR   Gene3D; 1.20.120.920; -; 1.
DR   Gene3D; 3.100.10.20; -; 1.
DR   HAMAP; MF_01470; Cas1; 1.
DR   InterPro; IPR002729; CRISPR-assoc_Cas1.
DR   InterPro; IPR042206; CRISPR-assoc_Cas1_C.
DR   InterPro; IPR042211; CRISPR-assoc_Cas1_N.
DR   Pfam; PF01867; Cas_Cas1; 1.
DR   TIGRFAMs; TIGR00287; cas1; 1.
PE   3: Inferred from homology;
KW   Antiviral defense; DNA-binding; Endonuclease; Hydrolase; Magnesium;
KW   Manganese; Metal-binding; Nuclease; Reference proteome.
FT   CHAIN           1..295
FT                   /note="CRISPR-associated endonuclease Cas1 2"
FT                   /id="PRO_0000417108"
FT   BINDING         155
FT                   /ligand="Mn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29035"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01470"
FT   BINDING         215
FT                   /ligand="Mn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29035"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01470"
FT   BINDING         230
FT                   /ligand="Mn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29035"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01470"
SQ   SEQUENCE   295 AA;  32343 MW;  4415AC8AC2480185 CRC64;
     MQIVVASYGA RIRAKKGLLI VEGREGRREY PLHQVDEVLL LTGGISISTR ALRALLRAGA
     VVAVFDQRGE PLGIFMKPVG DATGAKRLCQ YAAATDGRGL QLAKKWVWLK IRGQLENLKR
     WRRRLGKYGT YAESISKAIN ALASAATPRE VMEAEAAAAE AYWAAYREIT GFPGRDQEGR
     DPVNAGLNYG YGILKALCFK SILLAGLDPY VGFLHADKSG RPSLVLDFME QWRPRVDAVV
     AQLAEELEAE NGLLTHKSRL RLAAAVLEEF NATGRPLSAE IHREARSIAK ALCTS
 
 
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