ID E1VQA2_9GAMM Unreviewed; 303 AA.
AC E1VQA2;
DT 30-NOV-2010, integrated into UniProtKB/TrEMBL.
DT 30-NOV-2010, sequence version 1.
DT 24-JAN-2024, entry version 51.
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=HDN1F_34110 {ECO:0000313|EMBL:CBL46994.1};
OS gamma proteobacterium HdN1.
OC Bacteria; Pseudomonadota; Gammaproteobacteria.
OX NCBI_TaxID=83406 {ECO:0000313|EMBL:CBL46994.1, ECO:0000313|Proteomes:UP000002677};
RN [1] {ECO:0000313|EMBL:CBL46994.1, ECO:0000313|Proteomes:UP000002677}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=HdN1 {ECO:0000313|Proteomes:UP000002677};
RA Widdel F., Rabus R., Grundmann O., Werner I., Schreiber F., Ehrenreich P.,
RA Behrends A., Wilkes H., Kube M., Reinhardt R., Zedelius J.;
RT "Alkane degradation by a new type of denitrifying bacterium with possible
RT involvement of the electron acceptor in substrate activation.";
RL Environ. Microbiol. 0:0-0(2010).
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; FP929140; CBL46994.1; -; Genomic_DNA.
DR AlphaFoldDB; E1VQA2; -.
DR STRING; 83406.HDN1F_34110; -.
DR KEGG; gpb:HDN1F_34110; -.
DR eggNOG; COG1518; Bacteria.
DR HOGENOM; CLU_055263_1_0_6; -.
DR OrthoDB; 9803119at2; -.
DR Proteomes; UP000002677; Chromosome.
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 HAMAP; MF_01470; Cas1; 1.
DR InterPro; IPR002729; CRISPR-assoc_Cas1.
DR InterPro; IPR042206; CRISPR-assoc_Cas1_C.
DR InterPro; IPR019855; CRISPR-assoc_Cas1_NMENI.
DR NCBIfam; TIGR00287; cas1; 1.
DR NCBIfam; TIGR03639; cas1_NMENI; 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:UP000002677}.
FT BINDING 151
FT /ligand="Mn(2+)"
FT /ligand_id="ChEBI:CHEBI:29035"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01470"
FT BINDING 208
FT /ligand="Mn(2+)"
FT /ligand_id="ChEBI:CHEBI:29035"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01470"
FT BINDING 223
FT /ligand="Mn(2+)"
FT /ligand_id="ChEBI:CHEBI:29035"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01470"
SQ SEQUENCE 303 AA; 33151 MW; B13E5F71253BE44B CRC64;
MIERIVEIAE DNRHLSLYRG FLMVHETGPQ RREVGRVPLE DIGAVIAHSH GLSYSNNVLV
ALAEKGAPFV LCGSHHNVVG MLWPVDGNFQ QAKRMDAQLA ATKPLQKQLW ASIVRIKLLQ
QAAVLDASGK PSKPLTALAN KVRSGDIGNL EAQGARRYWK LLMGESFRRD TAGGGINSLL
NYGYTVYRAA TARAVVAAGL HPTLGIHHSN EGNPMRLVDD LIEPFRPLVD WQVFRLVHAD
PEVALTAECK RTLAMSLYQD LQTVAGATPV MVCMQRLAVS LAQSYLTKLC DLAFPMPGVS
LDA
//
