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CAS1A_CHLTE
ID   CAS1A_CHLTE             Reviewed;         343 AA.
AC   Q8KDC4;
DT   16-MAY-2012, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2002, sequence version 1.
DT   03-AUG-2022, entry version 87.
DE   RecName: Full=CRISPR-associated endonuclease Cas1 1 {ECO:0000255|HAMAP-Rule:MF_01470};
DE            EC=3.1.-.- {ECO:0000255|HAMAP-Rule:MF_01470};
GN   Name=cas1-1 {ECO:0000255|HAMAP-Rule:MF_01470}; OrderedLocusNames=CT1130;
OS   Chlorobaculum tepidum (strain ATCC 49652 / DSM 12025 / NBRC 103806 / TLS)
OS   (Chlorobium tepidum).
OC   Bacteria; Chlorobi; Chlorobia; Chlorobiales; Chlorobiaceae; Chlorobaculum.
OX   NCBI_TaxID=194439;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 49652 / DSM 12025 / NBRC 103806 / TLS;
RX   PubMed=12093901; DOI=10.1073/pnas.132181499;
RA   Eisen J.A., Nelson K.E., Paulsen I.T., Heidelberg J.F., Wu M., Dodson R.J.,
RA   DeBoy R.T., Gwinn M.L., Nelson W.C., Haft D.H., Hickey E.K., Peterson J.D.,
RA   Durkin A.S., Kolonay J.F., Yang F., Holt I.E., Umayam L.A., Mason T.M.,
RA   Brenner M., Shea T.P., Parksey D.S., Nierman W.C., Feldblyum T.V.,
RA   Hansen C.L., Craven M.B., Radune D., Vamathevan J.J., Khouri H.M.,
RA   White O., Gruber T.M., Ketchum K.A., Venter J.C., Tettelin H., Bryant D.A.,
RA   Fraser C.M.;
RT   "The complete genome sequence of Chlorobium tepidum TLS, a photosynthetic,
RT   anaerobic, green-sulfur bacterium.";
RL   Proc. Natl. Acad. Sci. U.S.A. 99:9509-9514(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; AE006470; AAM72363.1; -; Genomic_DNA.
DR   RefSeq; NP_662021.1; NC_002932.3.
DR   RefSeq; WP_010932802.1; NC_002932.3.
DR   AlphaFoldDB; Q8KDC4; -.
DR   SMR; Q8KDC4; -.
DR   STRING; 194439.CT1130; -.
DR   EnsemblBacteria; AAM72363; AAM72363; CT1130.
DR   KEGG; cte:CT1130; -.
DR   PATRIC; fig|194439.7.peg.1029; -.
DR   eggNOG; COG1518; Bacteria.
DR   HOGENOM; CLU_052779_1_0_10; -.
DR   OMA; WHMQAML; -.
DR   OrthoDB; 1581397at2; -.
DR   Proteomes; UP000001007; Chromosome.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0004520; F:endodeoxyribonuclease activity; IEA:InterPro.
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   CDD; cd09721; Cas1_I-C; 1.
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; IPR019856; CRISPR-assoc_Cas1_DVULG.
DR   InterPro; IPR042211; CRISPR-assoc_Cas1_N.
DR   Pfam; PF01867; Cas_Cas1; 1.
DR   TIGRFAMs; TIGR00287; cas1; 1.
DR   TIGRFAMs; TIGR03640; cas1_DVULG; 1.
PE   3: Inferred from homology;
KW   Antiviral defense; DNA-binding; Endonuclease; Hydrolase; Magnesium;
KW   Manganese; Metal-binding; Nuclease; Reference proteome.
FT   CHAIN           1..343
FT                   /note="CRISPR-associated endonuclease Cas1 1"
FT                   /id="PRO_0000417073"
FT   BINDING         166
FT                   /ligand="Mn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29035"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01470"
FT   BINDING         234
FT                   /ligand="Mn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29035"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01470"
FT   BINDING         249
FT                   /ligand="Mn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29035"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01470"
SQ   SEQUENCE   343 AA;  38756 MW;  9DF5B16504974866 CRC64;
     MKKHLNTLFV TTQGSYLSKE GECVLISIDR VEKTRIPLHM LNGIVCFGQV SCSPFLLGHC
     AQLGVAVTFL TEHGRFLCQM QGPVKGNILL RRAQYRMADN YDQTATLARL FVIGKIGNAR
     VTLARALRDH PEKTDGEKLK NAQHVLAGCI RRLQEATDQE LIRGIEGEAA KAYFSVFDEC
     ITADDPAFRF EGRSRRPPLD RVNCLLSFVY TLMTHDIRSA LESCGLDPAA GFLHKDRPGR
     PSLALDMLEE FRSYIGDRLV LSLINRGQIH AKDFDISETG AVAMKDDARK TLITAYQQRK
     QEEIEHPFVG EKMAVGLLWH MQAMLLARYI RGDIDMYPPF VWR
 
 
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