ID G7G150_9GAMM Unreviewed; 322 AA.
AC G7G150;
DT 25-JAN-2012, integrated into UniProtKB/TrEMBL.
DT 25-JAN-2012, sequence version 1.
DT 24-JAN-2024, entry version 34.
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=P20495_1619 {ECO:0000313|EMBL:GAA79123.1};
OS Pseudoalteromonas sp. BSi20495.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Alteromonadales;
OC Pseudoalteromonadaceae; Pseudoalteromonas.
OX NCBI_TaxID=386429 {ECO:0000313|EMBL:GAA79123.1, ECO:0000313|Proteomes:UP000003050};
RN [1] {ECO:0000313|Proteomes:UP000003050}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=BSi20495 {ECO:0000313|Proteomes:UP000003050};
RX PubMed=22275105; DOI=10.1128/JB.06427-11;
RA Bian F., Xie B.B., Qin Q.L., Shu Y.L., Zhang X.Y., Yu Y., Chen B.,
RA Chen X.L., Zhou B.C., Zhang Y.Z.;
RT "Genome sequences of six Pseudoalteromonas strains isolated from Arctic sea
RT ice.";
RL J. Bacteriol. 194:908-909(2012).
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|HAMAP-Rule:MF_01470}.
CC -!- SIMILARITY: Belongs to the CRISPR-associated endonuclease Cas1 family.
CC {ECO:0000256|HAMAP-Rule:MF_01470}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:GAA79123.1}.
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DR EMBL; BADY01000054; GAA79123.1; -; Genomic_DNA.
DR RefSeq; WP_008135456.1; NZ_BADY01000054.1.
DR AlphaFoldDB; G7G150; -.
DR Proteomes; UP000003050; Unassembled WGS sequence.
DR GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR GO; GO:0004520; F:DNA endonuclease 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 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 InterPro; IPR019857; CRISPR-assoc_Cas1_YPEST-subtyp.
DR NCBIfam; TIGR00287; cas1; 1.
DR NCBIfam; TIGR03637; cas1_YPEST; 1.
DR PANTHER; PTHR34353:SF3; CRISPR-ASSOCIATED ENDONUCLEASE CAS1; 1.
DR PANTHER; PTHR34353; 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|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}.
FT BINDING 186
FT /ligand="Mn(2+)"
FT /ligand_id="ChEBI:CHEBI:29035"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01470"
FT BINDING 248
FT /ligand="Mn(2+)"
FT /ligand_id="ChEBI:CHEBI:29035"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01470"
FT BINDING 262
FT /ligand="Mn(2+)"
FT /ligand_id="ChEBI:CHEBI:29035"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01470"
SQ SEQUENCE 322 AA; 36563 MW; 10BD9B21221517AE CRC64;
MDDFSPSNLK TILHSKRANM YYLEYCRVMQ KDGRVLYLTE AKNENQYFNI PIANTTVLLL
GNGTSITQAA MRMLAQAGVL VGFSGGGGTP LYMGNNIEWL TPQSEYRPTE YLQGWMSFWF
DDKKRLAVAK QFQQARIEYL NKIWNKDRSL KSEGFTTQNN SIETALTRFN ERMLVATKQS
ELLLTEAQLT KALYKFAANI TKAEGFTRQH TSTDLANDFL NHGNYLAYGL AASCLWVLGI
PHGFAVMHGK TRRGALVFDI ADLIKDAIVL PWAFICAQEN ATEQEFRQQI LQAFTDNKAL
DFMFDEVKKA ALQTEHKTGE NQ
//
