ID D4MA42_9BACT Unreviewed; 336 AA.
AC D4MA42;
DT 18-MAY-2010, integrated into UniProtKB/TrEMBL.
DT 18-MAY-2010, sequence version 1.
DT 24-JAN-2024, entry version 43.
DE RecName: Full=CRISPR-associated endonuclease Cas1 {ECO:0000256|HAMAP-Rule:MF_01470};
DE EC=3.1.-.- {ECO:0000256|HAMAP-Rule:MF_01470};
GN Name=cas1 {ECO:0000256|HAMAP-Rule:MF_01470};
GN ORFNames=SY1_18960 {ECO:0000313|EMBL:CBL28737.1};
OS Fretibacterium fastidiosum.
OC Bacteria; Synergistota; Synergistia; Synergistales; Aminobacteriaceae;
OC Fretibacterium.
OX NCBI_TaxID=651822 {ECO:0000313|EMBL:CBL28737.1, ECO:0000313|Proteomes:UP000008957};
RN [1] {ECO:0000313|EMBL:CBL28737.1, ECO:0000313|Proteomes:UP000008957}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SGP1 {ECO:0000313|EMBL:CBL28737.1,
RC ECO:0000313|Proteomes:UP000008957};
RG metaHIT consortium -- http://www.metahit.eu/;
RA Pajon A., Turner K., Parkhill J., Wade W., Vartoukian S.;
RT "The genome sequence of Synergistetes sp. SGP1.";
RL Submitted (MAR-2010) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:CBL28737.1, ECO:0000313|Proteomes:UP000008957}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SGP1 {ECO:0000313|EMBL:CBL28737.1,
RC ECO:0000313|Proteomes:UP000008957};
RA Pajon A.;
RL Submitted (MAR-2010) to the EMBL/GenBank/DDBJ databases.
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:0000256|HAMAP-Rule:MF_01470}.
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01470};
CC Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01470};
CC -!- SUBUNIT: Homodimer, forms a heterotetramer with a Cas2 homodimer.
CC {ECO:0000256|ARBA:ARBA00038592, ECO:0000256|HAMAP-Rule:MF_01470}.
CC -!- SIMILARITY: Belongs to the CRISPR-associated endonuclease Cas1 family.
CC {ECO:0000256|HAMAP-Rule:MF_01470}.
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DR EMBL; FP929056; CBL28737.1; -; Genomic_DNA.
DR AlphaFoldDB; D4MA42; -.
DR KEGG; sbr:SY1_18960; -.
DR PATRIC; fig|651822.3.peg.1157; -.
DR HOGENOM; CLU_052779_1_0_0; -.
DR Proteomes; UP000008957; 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 CDD; cd09634; Cas1_I-II-III; 1.
DR Gene3D; 1.20.120.920; CRISPR-associated endonuclease Cas1, C-terminal domain; 1.
DR Gene3D; 3.100.10.20; CRISPR-associated endonuclease Cas1, N-terminal domain; 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 NCBIfam; TIGR00287; cas1; 1.
DR PANTHER; PTHR34353; CRISPR-ASSOCIATED ENDONUCLEASE CAS1 1; 1.
DR PANTHER; PTHR34353:SF2; CRISPR-ASSOCIATED ENDONUCLEASE CAS1 1; 1.
DR Pfam; PF01867; Cas_Cas1; 1.
PE 3: Inferred from homology;
KW Antiviral defense {ECO:0000256|ARBA:ARBA00023118, ECO:0000256|HAMAP-
KW Rule:MF_01470};
KW DNA-binding {ECO:0000256|ARBA:ARBA00023125, ECO:0000256|HAMAP-
KW Rule:MF_01470};
KW Endonuclease {ECO:0000256|ARBA:ARBA00022759, ECO:0000256|HAMAP-
KW Rule:MF_01470};
KW Hydrolase {ECO:0000256|ARBA:ARBA00022801, ECO:0000256|HAMAP-Rule:MF_01470};
KW Magnesium {ECO:0000256|ARBA:ARBA00022842, ECO:0000256|HAMAP-Rule:MF_01470};
KW Manganese {ECO:0000256|ARBA:ARBA00023211, ECO:0000256|HAMAP-Rule:MF_01470};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_01470};
KW Nuclease {ECO:0000256|ARBA:ARBA00022722, ECO:0000256|HAMAP-Rule:MF_01470};
KW Reference proteome {ECO:0000313|Proteomes:UP000008957}.
FT BINDING 162
FT /ligand="Mn(2+)"
FT /ligand_id="ChEBI:CHEBI:29035"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01470"
FT BINDING 227
FT /ligand="Mn(2+)"
FT /ligand_id="ChEBI:CHEBI:29035"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01470"
FT BINDING 242
FT /ligand="Mn(2+)"
FT /ligand_id="ChEBI:CHEBI:29035"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01470"
SQ SEQUENCE 336 AA; 37196 MW; 71762C4FAF171865 CRC64;
MTRTIYLTQD NGVLGRNGEG FSWRRSRKEP PEKIPNTNLG DVVVVGNGSI TTPALHLLMD
RNIPVHFVSS GGRYKGSLTS GMGHGYELRR AQYDSALSED RSLDFARSFV VGKVLNQRQT
LTRFMYRRPG GGEVFEDAAR ELAILAREAS GSSCLEALRG TEGNAARIYF SVLGNALIAP
WRFDGRTRRP PRDPVNALLS FAYTLLLGRV TTAVVTVGLD PCVGWLHPAY RGRPSASLDL
MEEFRSAVVD RLVISILNQG FLSENHFSAG EGGGVRMAQS AREKLMRLFK ERLRTEVVNS
SNNHSSSYEN HIFAQAQSLA RSIRDGDSYL PFVLKL
//
