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Database: UniProt
Entry: A0A087EKJ9_9BIFI
LinkDB: A0A087EKJ9_9BIFI
Original site: A0A087EKJ9_9BIFI 
ID   A0A087EKJ9_9BIFI        Unreviewed;       529 AA.
AC   A0A087EKJ9;
DT   29-OCT-2014, integrated into UniProtKB/TrEMBL.
DT   29-OCT-2014, sequence version 1.
DT   24-JAN-2024, entry version 33.
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=BITS_0807 {ECO:0000313|EMBL:KFJ08300.1}, FYJ32_02010
GN   {ECO:0000313|EMBL:MSS12242.1};
OS   Bifidobacterium tsurumiense.
OC   Bacteria; Actinomycetota; Actinomycetes; Bifidobacteriales;
OC   Bifidobacteriaceae; Bifidobacterium.
OX   NCBI_TaxID=356829 {ECO:0000313|EMBL:KFJ08300.1, ECO:0000313|Proteomes:UP000029080};
RN   [1] {ECO:0000313|EMBL:KFJ08300.1, ECO:0000313|Proteomes:UP000029080}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=JCM 13495 {ECO:0000313|EMBL:KFJ08300.1,
RC   ECO:0000313|Proteomes:UP000029080};
RA   Ventura M., Milani C., Lugli G.A.;
RT   "Genomics of Bifidobacteria.";
RL   Submitted (MAR-2014) to the EMBL/GenBank/DDBJ databases.
RN   [2] {ECO:0000313|EMBL:MSS12242.1, ECO:0000313|Proteomes:UP000482439}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=BSM-380-WT-2B {ECO:0000313|EMBL:MSS12242.1,
RC   ECO:0000313|Proteomes:UP000482439};
RA   Wylensek D., Hitch T.C.A., Clavel T.;
RT   "In-depth cultivation of the pig gut microbiome towards novel bacterial
RT   diversity and tailored functional studies.";
RL   Submitted (AUG-2019) 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   -!- CATALYTIC ACTIVITY:
CC       Reaction=exonucleolytic cleavage in the 5'- to 3'-direction to yield
CC         nucleoside 3'-phosphates.; EC=3.1.12.1;
CC         Evidence={ECO:0000256|ARBA:ARBA00033996};
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}.
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:KFJ08300.1}.
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DR   EMBL; JGZU01000002; KFJ08300.1; -; Genomic_DNA.
DR   EMBL; VULW01000001; MSS12242.1; -; Genomic_DNA.
DR   RefSeq; WP_026641772.1; NZ_VULW01000001.1.
DR   AlphaFoldDB; A0A087EKJ9; -.
DR   STRING; 356829.BITS_0807; -.
DR   eggNOG; COG1468; Bacteria.
DR   eggNOG; COG1518; Bacteria.
DR   OrthoDB; 1550386at2; -.
DR   Proteomes; UP000029080; Unassembled WGS sequence.
DR   Proteomes; UP000482439; Unassembled WGS sequence.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0004519; F:endonuclease activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0051536; F:iron-sulfur cluster binding; IEA:UniProtKB-KW.
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; 3.90.320.10; -; 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   InterPro; IPR013343; CRISPR-assoc_prot_Cas4.
DR   InterPro; IPR022765; Dna2/Cas4_DUF83.
DR   InterPro; IPR011604; PDDEXK-like_dom_sf.
DR   NCBIfam; TIGR00287; cas1; 1.
DR   NCBIfam; TIGR00372; cas4; 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.
DR   Pfam; PF01930; Cas_Cas4; 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   Iron {ECO:0000256|ARBA:ARBA00023004};
KW   Iron-sulfur {ECO:0000256|ARBA:ARBA00023014};
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:UP000029080}.
FT   DOMAIN          9..183
FT                   /note="DUF83"
FT                   /evidence="ECO:0000259|Pfam:PF01930"
FT   BINDING         352
FT                   /ligand="Mn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29035"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01470"
FT   BINDING         421
FT                   /ligand="Mn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29035"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01470"
FT   BINDING         436
FT                   /ligand="Mn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29035"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01470"
SQ   SEQUENCE   529 AA;  59419 MW;  980D5A68A4F29C54 CRC64;
     MDDDPIPISL VAHTIFCPRR AWLEATGEKV ESSQIERGNY DHRIVDRTGG AKDADSFQAI
     NIRHEEWGVS GKLDAAQMTD DGVVIREYKA TPVKRSMTVT EAMRIQLALQ AACLMDMGYR
     VAGTEIFFTT HHRRVEVELD EDDFARAKDA VDQTRALITS DTAPEPLEDD ARCMRCSHVG
     ICLPEERKLT AVSHRIVVEA PDNQVTHLST AGAKAFSRAG RMVVFKEGEE IASVPLDSIQ
     GLQIHGNTDL SSGLIRELMW RNIPILWCSG TGRLYGWSMP SYGPNGQQRV DQHVASHEGR
     LGLAREFIIS KVHNQGVLLR RSDKQNPVLP QMRQIEKQLA NANRWQDVLG LEGEAAALYF
     SQFGHLIKAD KREDWAWTAR MRRPAPDALN SLLDYAYTLL LSDCIRAVLS CGLDPHAGFL
     HSSKRNKPAL ALDLMEEFRA PVADSVVQTV VNNGEVRASG FVYALGSVRM DDVTRKTLIR
     AYERRMETEL THPLFGYKAT WRRIIEIQAR LILGYLDGTQ SEYKGIRVR
//
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