About Products Protein Database Contact

cas3

Gene
cas3
Protein
CRISPR-associated nuclease/helicase Cas3 subtype I-F/YPEST
Organism
Pectobacterium atrosepticum (strain SCRI 1043 / ATCC BAA-672)
Length
1098 amino acids
Function
CRISPR (clustered regularly interspaced short palindromic repeat) is an adaptive immune system that provides protection against mobile genetic elements (viruses, transposable elements and conjugative plasmids). CRISPR clusters contain sequences complementary to antecedent mobile elements and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). Might be involved in the integration of spacer DNA into the CRISPR cassette.
Similarity
In the central section; belongs to the CRISPR-associated helicase Cas3 family.
Mass
124.892 kDa
Sequence
MNILLISECNKRALVETRRILDQFAERKGERSWQTAITLEGLNTLRKLLRKTARRNTAVACHWIRSTNHTELLWVVGNLRRFNAQGSVPTNTTSRDVLRTKDENPWHSAEVFSLLAAIAGLFHDVGKANALFQAGLSGTGPRSQPYRHEWVSLRLFQAFVGEQDDKAWLTTLSMITSEAEVALLATLQQDKPTFSDSPFRTLPPLAQTIAWLIVSHHRLPVFNKSTELAPNSSEPQLSFAETWLTDHLSPQWNALNHCQIGWTPHEREQNWQFPNGTPLYSAVWREKARKFAGRALKLPSFMHFSQLDQRLTVHLARLALMLADHHYSAGAATVGWQDITYPVWANTDRKTGEYKQRLDEHCVGVGQNALLLGRSLPHLRDTLPAITRHKGFRQRSTHPRFRWQDRAFDLACSIRETSKQHGFFGINMASTGRGKTFANARIMYGLSDESTGCRFSVALGLRTLTLQTGDALRQRLKLDEDDLAVLIGSQAVQDLHEMRKENQQRQQNTPQTGSESADPLFSEHQYVRYDGSLDDGRLKAWLERSPTLHQLLSAPVLITTIDHLMPATEALRGGHQIAPMLRLLTADLVLDEPDDFGLEDLPALCRLVNWAGMLGSRVLLSSATLPPALIRALFDAYLDGRTAWQQAYGTPNTPLNVCCGWFDEFDCQHEQYGDVKDFMVRHDAFVHQRLKNLTKDELPLRFATIVPVSSPSKNADDVYLAVAQAIHPRMFDLHSQHHQQHENGKTVSLGLVRMANIDPLVAVARQLLAIPSPPDTCIHYCIYHSQHPLAMRSHIEQRLDAALMRNDADALWQVEEIRQAIEKSSQRHHVFVALATSVAEVGRDHDYDWAIVEPSSMRSLIQPAGRILRHRQDKQYVPKTPNIYLLSHNIRALRGKDIAYCKPGFESQDDSLDTHDLHQLLQEKEYRHLSAAPRIVQPMSFAKPLSLVALEHAVLGKTLLGLKNKKLDDLKRPPAAFWWRAHPHWNGELQRRTPFRQSAKDEAYTLWIADDDEEPVFMVQDDGPSGWKQSDIARPVTLNMAEGVSAWIEPDYHALYQQLAEEKQWELSWVSARFGEIRLREEEDWYWHPLLGVFGALS

Gene
cas3
Protein
CRISPR-associated nuclease/helicase Cas3 subtype I-F/YPEST
Organism
Pseudomonas aeruginosa (strain UCBPP-PA14)
Length
1076 amino acids
Function
In this bacteria Y.pestis-subtype CRISPRs do not confer resistance to phage DSM3 or MP22, but instead are required for DMS3-dependent inhibition of biofilm formation and possibly motility.
Similarity
In the central section; belongs to the CRISPR-associated helicase Cas3 family.
Mass
121.091 kDa
Sequence
MNILLVSQCEKRALSETRRILDQFAERRGERTWQTPITQAGLDTLRRLLKKSARRNTAVACHWIRGRDHSELLWIVGDASRFNAQGAVPTNRTCRDILRKEDENDWHSAEDIRLLTVMAALFHDIGKASQAFQAKLRNRGKPMADAYRHEWVSLRLFEAFVGPGSSDEDWLRRLADKRETGDAWLSQLARDDRQSAPPGPFQKSRLPPLAQAVGWLIVSHHRLPNGDHRGSASLARLPAPIQSQWCGARDADAKEKAACWQFPHGLPFASAHWRARTALCAQSMLERPGLLARGPALLHDSYVMHVSRLILMLADHHYSSLPADSRLGDPNFPLHANTDRDSGKLKQRLDEHLLGVALHSRKLAGTLPRLERQLPRLARHKGFTRRVEQPRFRWQDKAYDCAMACREQAMEHGFFGLNLASTGCGKTLANGRILYALADPQRGARFSIALGLRSLTLQTGQAYRERLGLGDDDLAILVGGSAARELFEKQQERLERSGSESAQELLAENSHVHFAGTLEDGPLREWLGRNSAGNRLLQAPILACTIDHLMPASESLRGGHQIAPLLRLMTSDLVLDEVDDFDIDDLPALSRLVHWAGLFGSRVLLSSATLPPALVQGLFEAYRSGREIFQRHRGAPGRATEIRCAWFDEFSSQSSAHGAVTSFSEAHATFVAQRLAKLEQLPPRRQAQLCTVHAAGEARPALCRELAGQMNTWMADLHRCHHTEHQGRRISFGLLRLANIEPLIELAQAILAQGAPEGLHVHLCVYHSRHPLLVRSAIERQLDELLKRSDDDAAALFARPTLAKALQASTERDHLFVVLASPVAEVGRDHDYDWAIVEPSSMRSIIQLAGRIRRHRSGFSGEANLYLLSRNIRSLEGQNPAFQRPGFETPDFPLDSHDLHDLLDPALLARIDASPRIVEPFPLFPRSRLVDLEHRRLRALMLADDPPSSLLGVPLWWQTPASLSGALQTSQPFRAGAKERCYALLPDEDDEERLHFSRYEEGTWSNQDNLLRNLDLTYGPRIQTWGTVNYREELVAMAGREDLDLRQCAMRYGEVRLRENTQGWSYHPYLGFKKYN

Gene
cas3
Protein
CRISPR-associated nuclease/helicase Cas3
Organism
Haloferax volcanii (strain ATCC 29605 / DSM 3757 / JCM 8879 / NBRC 14742 / NCIMB 2012 / VKM B-1768 / DS2)
Length
937 amino acids
Function
CRISPR (clustered regularly interspaced short palindromic repeat), is an adaptive immune system that provides protection against mobile genetic elements (viruses, transposable elements and conjugative plasmids). CRISPR clusters contain sequences complementary to antecedent mobile elements and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). This protein plus Cascade participate in CRISPR interference, the third stage of CRISPR immunity (By similarity). Plasmid targeted by CRISPR locus P1 transform wild-type cells very poorly (PubMed:22767603).
Similarity
In the central section; belongs to the CRISPR-associated helicase Cas3 family.
Mass
103.679 kDa
Sequence
MTYPLISHPEANDGERTYPDEQLTDDGSLRLTAHNTVVSEYATRLFRGPETQRRFLCVAASLHDFGKATPQFQAYVRDEYEGPEKEKNHARLGALATWFVLDQRDAPARDKLAATLAVARHHQALPDAAQYTAESLADAFETSNSVLTAQLEAISERWPQKATELLQRSGETDSTWDEFRTWVQSGTVVGELHEVSARRELTGPKATSDKLPRKLYDRTLHYWAAITLADKSHAMAVPESHVFDVETLDRETLEEYISGLRAEPPDDELERALNDERERARRQAIDGVHEWLGGDAQTPPIATLTLPTGLGKTFTGLSAAFEARGILESDGGPTRPIVYALPYTSIIEQTRSIFERPELWGADPTKSALTVHHYLSETVVYRNERESEDVASTDQEEHASFLGEAWRDGTVLTTFVQLFESLVGPSNRQGLKLSALDDGLVILDEPQALPKEWWDGITRLIELLTTEYQTRVIAMTATQPTLLRDVETTSLLDVGREHDKTGCLRCEVGPDYPVRLEPARKETYFENAERVRYRIDESALSFHLSADERYLSHETAAARVVAATAAGEGGSTLAICNTINSSATLTQELCGHDGVTHLGEAIDSVLGANDVDATKQENNVSAIVDAILRRSGLRGVDGELSVPAGTDIVVATLNSRYRPFDRRLLIEIADTLSGSEIPFVLISTQAIEAGVDLSFKRVFRDIAPLDSIVQAGGRCNRSYEWGRNGGQVVVWTLADPDEENPGDPTKSPPAHWVYERGSSDAGIQTHLQLISSILAQFEDEEVPDAEISHHAVNEYFDALREKSLSSTKIRTLIDDAKAGKLARESLIGGYQTVDVLVATTQAERKRLNELTELFTSDDPTDRSTGYKKLEQAAGIRVSLPLNSIEQLPDVSRVDGKERNEDGVQVFRYTGTESLEYDLQTGGLRGKEDTVAGRFTTF

Gene
cas3
Protein
CRISPR-associated nuclease/helicase Cas3
Organism
Streptococcus thermophilus
Length
926 amino acids
Function
CRISPR (clustered regularly interspaced short palindromic repeat), is an adaptive immune system that provides protection against mobile genetic elements (viruses, transposable elements and conjugative plasmids). CRISPR clusters contain sequences complementary to antecedent mobile elements and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). Cas3 plus Cascade participate in CRISPR interference, the third stage of CRISPR immunity. Functions as a ssDNA-dependent ATPase; dsDNA, ssRNA do not stimulate ATPase activity, while other nucleotides (aside from dATP) are not hydrolyzed. Functions as a ssDNA nuclease; activity does not require ATP. Functions as an ATP-dependent helicase; helicase activity requires hydrolysable ATP. Unwinds both DNA/DNA hybrids and RNA/DNA hybrids, moving mostly in a 3' to 5' direction.
Similarity
In the central section; belongs to the CRISPR-associated helicase Cas3 family.
Mass
105.76 kDa
Sequence
MKHINDYFWAKKTEENSRLLWLPLTQHLEDTKNIAGLLWEHWLSEGQKVLIENSINVKSNIENQGKRLAQFLGAVHDIGKATPAFQTQKGYANSVDLDIQLLEKLERAGFSGISSLQLASPKKSHHSIAGQYLLSHYGVDEDIATIIGGHHGRPVDDLDGLNSQKSYPSNYYQDEKKDSLVYQKWKSNQEAFLNWALTETGFNSVSQLPKIKQPAQVILSGLLIMSDWIASNEHFFPLLSLDETDVKNKSQRIETGFKKWKKSNLWQPETFVDLVTLYQERFGFSPRNFQLILSQTIEKTTNPGIVILEAPMGIGKTEAALAVSEQLSSKKGCSGLFFGLPTQATSNGIFKRIEQWTENIKGNNSDHFSIQLVHGKAALNTDFIELLKGNTINMDDSENGSIFVNEWFSGRKTSALDDFVVGTVDQFLMVALKQKHLALRHLGFSKKVIVIDEVHAYDAYMSQYLLEAIRWMGAYGVPVIILSATLPAQQREKLIKSYMAGMGVKWRDIENIDQIKIDAYPLITYNDGPDIHQVKMFEKQEQKNIYIHRLPEEQLFDIVKEGLDNGGVVGIIVNTVRKSQELARNFSDIFGDDMVDLLHSNFIATERIRKEKDLLQEIGKKAIRPPKKIIIGTQVLEQSLDIDFDVLISDLAPMDLLIQRIGRLHRHKIKRPQKHEVARFYVLGTFEEFDFDEGTRLVYGDYLLARTQYFLPDKIRLPDDISPLVQKVYNSDLTITFPKPELHKKYLDAKIEHDDKIKNKETKAKSYRIANPVLKKSRVRTNSLIGWLKNLHPNDSEEKAYAQVRDIEDTVEVIALKKISDGYGLFIENKDISQNITDPIIAKKVAQNTLRLPMSLSKAYNIDQTINELERYNNSHLSQWQNSSWLKGSLGIIFDKNNEFILNGFKLLYDEKYGVTIERLDKNESV

Gene
cas3
Protein
CRISPR-associated endonuclease/helicase Cas3
Organism
Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Length
920 amino acids
Function
CRISPR (clustered regularly interspaced short palindromic repeat), is an adaptive immune system that provides protection against mobile genetic elements (viruses, transposable elements and conjugative plasmids). CRISPR clusters contain sequences complementary to antecedent mobile elements and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). Cas3 plus Cascade participate in CRISPR interference, the third stage of CRISPR immunity. The N-terminal domain (residues 6-260) acts as a ssDNA endonuclease, has no activity on dsDNA.
Similarity
In the central section; belongs to the CRISPR-associated helicase Cas3 family.
Mass
102.127 kDa
Sequence
MSVEEAALALWAKSGNPFHPLLAHMLDTAAVALAVLRMEPPRTRALYAEDWGLPEEGALAWAAALVGLHDLGKASPVFQAGWEEGKERVQRAGLPFGELLDWVAHGVFTELFLRRLLKEKGLPERAANDLAAALGAHHGFPANAEEKSRARRHLRTEDPLWKEARRWLLEEVFRRLGAPLPPSQGNGEARPEAVLRVMALASFADWVASDPSLFPYGRDPRRGDYLKEALRLAQEALNRLGWPAFAKAQRREFGELFPYIPKPNALQESVPALLEGACTPVLLLVEAPMGMGKTEAALYAHHLLQAGLGHRGLYVALPTQATANGLFPRVRGFLERLGEGSRLELQLQHGTALLNPHYAGLLERAAPRQVGEEEEGGAVASAWFSARKRAMLAPYGVGTLDQALLGVLRVKHHFVRLWGLMNRVVVLDEVHAYDVYTSGLLQALLRWLRALGSSAVVMTATLPPSRRRALLEAWAGEEVEGQDLGPYPRVVLVGEGVKARSLPPAREVEVALEVLREVDVEPLAQRLKGALPGAVGAIVNTVDRAQDLYRALGEGTPLTLEELARRLGGISGGQAWEEVRQALPERGGEVVGKVLTDGTLVFLLHARFPAEERALRGSVVLALFGKGGPRPPRAILVATQVAEQSLDLDFDLLYTDLAPIDLLFQRSGRLHRHERPRPEEHARPRLLLGVPEDLDFGKPLYWDKVYEDYVLLATWRALSGRDRLRVPGDLEALLEEIYEGENPESFPEGLRERAKKSLKALQERRDREANTARRLSLSELDRLLAYWDEGALVAQERLEDDEEKAETQRLLTRLGDPSVAVVPLFRVGEGLFLDREGRRRAPLKGEVSREEAEALFRRAVRLSRFPLPQELLKEEPPPAWRKSGLLRGLRPLEVGRVFRSGERAFQVELDPELGVVYLPV

Gene
cas3
Protein
CRISPR-associated nuclease/helicase Cas3
Organism
Methanothermobacter thermautotrophicus (strain ATCC 29096 / DSM 1053 / JCM 10044 / NBRC 100330 / Delta H)
Length
830 amino acids
Function
CRISPR (clustered regularly interspaced short palindromic repeat), is an adaptive immune system that provides protection against mobile genetic elements (viruses, transposable elements and conjugative plasmids). CRISPR clusters contain sequences complementary to antecedent mobile elements and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). Cas3 plus Cascade participate in CRISPR interference, the third stage of CRISPR immunity. Anneals and unwinds R-loops (in which crRNA binds the target DNA, displacing the noncomplementary strand). Unwinding requires ATP, annealing does not.
Similarity
In the central section; belongs to the CRISPR-associated helicase Cas3 family.
Mass
96.329 kDa
Sequence
MAMMELIDIIRAKSNDQRNYLLKDHLKETVARIDDFHNFYQTNREKFSYKIGEKTFRALAMASIIHDLGKIDYNFQKKLMGDDSEAWEVLEEFLSPLKPLKRSPRHEILSIIWSTFLLGNDDLDAMMRTAILLHHYNEYFLNDKDLMEIIFTYRDAFEIYLNFIIEKKETLRIFIEDILNYIQNSLESDLVISAADEIRSNMDFEKPELLLEKIKEYDDDISEFAAFYEPEERSADILILSGILRRADYSASAGVDIELFSEEVFRDIDEKITSKIGGAPWQIRLMGELGGPKKMVLVAPTGSGKTEFSILWAAKHGRKFIYTLPLRVALNDIFMRLRDSDGYFSEDEIDILHSTAFIEYLKEERLGRGTDLDSMMTSARLMASPALLTTPDQVLITSLNYFGSDKVISVYPFASMILDEIQTYNEEMAAVIIKTLELVNEVDGNILVMTATLPPYFRSFLDAMNFEVMDVAAIPGAHDIKNLNLKRHVPQLIEEPLFNDELEVSDKLGKILDENSEKNVLIVVNNVQKAIELYREYQDDPDVYLLHSRLLEKVKSQRIGEVKKRSQDERGLTVISTQIIEASVDIDFDLMITEISTIDSQIQRWGRIHRNRDADYDSGDPNIIIFTDSDRRTSLIYDKKVLDATRAILERYDGQILDYNLERSMIEEVFQEEIDGSTLKEIYENQIRETISDLDYFTVEKRTQAQRLFRNMAGYKVFIPDAVLRYSESEIERTFAELIKGDYRLWKDILGEIERITGEKTTMWDLKKVLYEYSVNVPVFYEEKSDFWSRTTGEFKGFYVWGSMEDDDVELLEELGLDSIFGETESSLIV

Gene
cas3
Protein
Putative CRISPR-associated nuclease/helicase Cas3
Organism
Myxococcus xanthus (strain DK 1622)
Length
746 amino acids
Function
CRISPR (clustered regularly interspaced short palindromic repeat), is an adaptive immune system that provides protection against mobile genetic elements (viruses, transposable elements and conjugative plasmids). CRISPR clusters contain sequences complementary to antecedent mobile elements and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). This protein plus Cascade participate in CRISPR interference, the third stage of CRISPR immunity.
Similarity
In the central section; belongs to the CRISPR-associated helicase Cas3 family.
Mass
82.292 kDa
Sequence
MKRLLAKSTATPDRPEGEATLLGHTALVLSAARRLLEHRGRASLLAAGLDPALEPRLRRIVLLAAALHDLGKCSEHFQSMLRRQREAPQLVRHEALSLWLCWPGQPLSAWLQRDVSELDLCLALVCVAAHHRKFQTEAFAPDGTGAGLSLELRVQHEDFARTLGRIAEELALSAPPLFTAPIVLRATRKEHPRDQLQSWQDDFERTVPAGSVDARLLAVCKALVLAADVAGSALPRSGEKQDWVDRQLTAPHPAEALRAVVERRLAGHTPRPFQEEVARSAAPLTLVRAGCGSGKTAAAYLWAARQHPGRPLWLTYPTMGTATEGFRDYLHGADVEARLQHSRAEVDFDIFGLRDGAAPGTSSRDQDRLDALRSWGADAMSCTADTVLGLVQSQRQGLYAWPGLCAACVVFDEVHAYDDRLFGCLLRFLEALPGIPALLMTASLPATRLDVLRGMCERVHGRSLAEVEGPEDLETLPRYQRLDVAEPWALVAECLRDHGKVLWVSNTVDRCMRTAEAGTSHGARALLYHSRFRYEDRVRRHGDVIEAFATEGRAAFASTTQVAEMSLDLSADLLVTDLAPIPALIQRLGRLNRRSTLERPAPVRPFVVLPFDGPPYAAPDLRDARAWMERLGTGPLSQRDLVDAWGPPGMMDAPRRQSSTWLDGRFDTWPAPCRDGSPSLTVLLEEDARAVLDGAVSAHRVTLPMNLPPESFKWRAWPRAGRLPYPIPPANALDYDGLRGARWRKP

Gene
cas3
Protein
Putative CRISPR-associated nuclease/helicase Cas3
Organism
Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440)
Length
728 amino acids
Function
CRISPR (clustered regularly interspaced short palindromic repeat), is an adaptive immune system that provides protection against mobile genetic elements (viruses, transposable elements and conjugative plasmids). CRISPR clusters contain sequences complementary to antecedent mobile elements and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). Cas3 plus Cascade participate in CRISPR interference, the third stage of CRISPR immunity (By similarity).
Similarity
In the central section; belongs to the CRISPR-associated helicase Cas3 family.
Mass
86.467 kDa
Sequence
MHDIGKITEGFQNNIKKGKRSNKHPHPLYALPIIKNIEFDYLFDIPIEVFAILSHHTQLYNNLYADYQQYKKGTFLIEEIKEFIKNSKEAYESLGFSKFFEFEDLKIEDIPKDAKPLELHRLRRKYWIEANNYIKSLSFDDKIKIKSIFSFMFSILQLCDDFASLNFSEYAKDREGIFDDVLENPEIYVPTLNIDNPISFILKDYEPYKFQKELYNSKNKFVMLFAPCGRGKTEGALLWALNALKNFKRNKIILAMPTQVTSNAMYDRLVKIFGEENVGLFHGKSFIKLRDSKEIEDEDDLEEIRDENFKGNVFFKPITITTIDHVIYSFVHGFSQADFALGNIQNSVIIFDEVHYYEKYTLEHLLTLFDILRRMDIPHLLMSGTLPNFLMNNLEGYELVVDEEGLNYKPFKLKCSENHLIWKEDDEWKVNENIINEIIENYKKGLSQAIILNTVERAREFYKAVRDKVPAILYHSQFAYKDRVKKEDEIFTLEEMRKSQNKPYVIVATQVIEISLDMSVDVMYSELSPPDALGQRAGRLHRKGKDWRENGKEYKLKIFLPYKHLPYSKELIEKTINHIKFYEKPLDYRDIKDFVDNVYKDYNLSIPSDLKLFFDEAILFGRHWTDISTIDEEGRFFKVRDDKFMKIEVVPQVYFDELGENSLRAEYMAKIPAYLILNEMKNEEGLIHFYPYEKRVGRKTRRYLICSFKYTYEIGFDYKEEEEFEDIL

Gene
cas3
Protein
CRISPR-associated helicase Cas3
Organism
Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440)
Length
614 amino acids
Function
CRISPR (clustered regularly interspaced short palindromic repeat), is an adaptive immune system that provides protection against mobile genetic elements (viruses, transposable elements and conjugative plasmids). CRISPR clusters contain sequences complementary to antecedent mobile elements and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). Cas3 plus Cascade participate in CRISPR interference, the third stage of CRISPR immunity. Probably unwinds dsDNA templates, thus providing substrates for CRISPR-associated endonuclease Cas3-HD. Unwinding is strongly increased in the presence of ATP, implying the helicase uses ATP to unwind substrate.
Similarity
Belongs to the CRISPR-associated helicase Cas3 family.
Mass
71.568 kDa
Sequence
MDIINFFKQITDHEPYDYQIRAWEKINKIMELGGRVVIEIPTAGGKTEAAIIPYLYQFISNDWKVPRLIYVLPTRSLVEKQVERIRNYIKKILEIKGYSKDKVEELAKKIVQVEYGLEETHAFLGFVVLTTWDTFLYGLAAHRTVGDRFTFPCGAIAQSLVVFDEIQMYQDESLYMPRLIGLVVKRLVEANVPLVFMTATLPTELKKILGIHDEEPITVNPEDTKKPERGEVVVEFKEKLSDEELSNEIKKAINEGKKVLIIKNTVNSAIEVYEKVKQLGNSLLLHSRFTVEDRAEKEKDIDKAEIIVATQVVEAGLDLTNVGLVITDLAPLDALIQRIGRCARRKGERGKVIVVLPNFNEKINEDHREKVILGFKNIPFENAYVTLVNNKDYGRVIELTIETIEEKKGKSKIVPKKFYIGDLGNKTIRKLIENNKILKKKDLYFIPYSTQPYDPLIMIKSFDEVESVSEYLYDIIKAREALDRVYKEYYENNIVPKDYYSAYIYFRELKLFSTPPEYELKARPEMFAILYPLENAEEKVKNKEIIEFNPKYVIRVSYNWLKNKWEKFDKKFELIKEYDEKGWICSLKKAGKLQPYKIYIIDDKYYSKETGIII

Gene
cas3
Protein
CRISPR-associated helicase Cas3
Organism
Thermoproteus tenax (strain ATCC 35583 / DSM 2078 / JCM 9277 / NBRC 100435 / Kra 1)
Length
566 amino acids
Function
CRISPR (clustered regularly interspaced short palindromic repeat), is an adaptive immune system that provides protection against mobile genetic elements (viruses, transposable elements and conjugative plasmids). CRISPR clusters contain sequences complementary to antecedent mobile elements and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). Cas3 plus Cascade participate in CRISPR interference, the third stage of CRISPR immunity. Probably unwinds dsDNA templates, thus providing substrates for CRISPR-associated endonuclease Cas3-HD. Unwinding is strongly increased in the presence of ATP, implying the helicase uses ATP to unwind substrate (By similarity).
Similarity
Belongs to the CRISPR-associated helicase Cas3 family.
Mass
63.347 kDa
Sequence
MVGRRLDTLVRELSLAWCRSKGEPSCAVREDLLAEQAKAAEVIERSDGVILLKAPTGFGKTEIWTAPFFAQWLRGEWFAPRMYVVEPMHALLRQMKRRMEVYAQAVQGLGLPRLNVAEDHGEVAKPLFLYGGHIVLTTVDSLAYGYLARRVQRWREEGVERGRYSMPAGLLASAYIVLDEAHLIQDEAYLGPRVLGKIVCDLASAGAKVVISTATVPETFLKHIPCLGGRLTLGSGTVRRNVKVERRKGVLKAEEIECGKPTIVIVNTIERARRIYKQVRCGKKAVVHSLMRREDKERQLSKVLADGKVAEDAVLIGTQALEVGLDFSNLRALYTETAPVDALIQRIGRVGRDGDKAEAYIYEAEGDAPYPQTLMRATREALEKELLGGAALTSWEDAQRAVDKVYNEKAVEELMTRGLAWYGQALGYLQELSLFSYPPRGEVRIRPSNYITLVIADVKQDGDKGRYITEDDVERGAMKMSYTSRDDPRINALLQKVSTAYTVRGVATAKDETRYYLSELRRSWDGVEVVVVDRRDVEELYDEAGLDVAQLSGGGQKRKGRGRRRR

Gene
cas3
Protein
CRISPR-associated endonuclease Cas3-HD
Organism
Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440)
Length
244 amino acids
Function
CRISPR (clustered regularly interspaced short palindromic repeat), is an adaptive immune system that provides protection against mobile genetic elements (viruses, transposable elements and conjugative plasmids). CRISPR clusters contain sequences complementary to antecedent mobile elements and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). Cas3 plus Cascade participate in CRISPR interference, the third stage of CRISPR immunity. Acts as a ssDNA and ssRNA nuclease, with both endo- and 3' to 5' exonuclease activities, acting on substrates with free single-stranded 3' ends. Double-stranded nucleic acids are not substrates. Activity is higher for DNA than RNA. Templates include R-loops (a bubble-like structure formed when ssRNA replaces one strand in a dsDNA, such as crRNA is thought to form with CRISPR target DNA), circular ssDNA, 2',3'-cAMP and 2',3'-cGMP. Probably generates 3'-phosphate and 5'-hydroxyl ends. In the presence of the Cas3 helicase and ATP dsDNA templates are also degraded.
Similarity
Belongs to the CRISPR-associated nuclease Cas3-HD family.
Mass
28.406 kDa
Sequence
MILGEIMEVLAFKNQSLIDHVNDMVKYWERIKYRYLKTIKRALEALNIKLDIEKVDEFMKILIKLHDIGKASKIYQRAIINDQEKLMGFRHELVSAYYTYHILLKKFGDKNLAFIGALTVMLHHEPIIMGQIRNLKKKELTAEVVLDKLKKFDGMIEDFEDLIKKLIGYSIGDIIKNDSNKDDIIRFVIEMSVRARHTPNSEKLRFIVGTLLLPLVMCDYKGAESREGKAPKFAEVLEVESYVI

Gene
cas3
Protein
CRISPR-associated endonuclease Cas3-HD
Organism
Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2)
Length
239 amino acids
Function
CRISPR (clustered regularly interspaced short palindromic repeat), is an adaptive immune system that provides protection against mobile genetic elements (viruses, transposable elements and conjugative plasmids). CRISPR clusters contain sequences complementary to antecedent mobile elements and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). Cas3 plus Cascade participate in CRISPR interference, the third stage of CRISPR immunity. Acts as a dsDNA and dsRNA endonuclease (in a fusion with Alicyclus caldarius esterase to increase solubility).
Similarity
Belongs to the CRISPR-associated nuclease Cas3-HD family.
Mass
27.515 kDa
Sequence
MIKPCAYEKQGLIDHAIGSYRVLDGKISESYYKIISRRLERYGIVLDLNGVKEMVKDVVVLHDMGKAGEYYQNQFDDNCNPLKSNFSFIYHELGSALFFYYDYEPIDVEKAEEVKSLLTLAVLNHLNAIRVISDYLVNKFPDNFDERMIKLNKYGSIMLQNLRGVISKSLKVRDYTFDDYHDMLYAFSKKSDKYLKLYNLFLAPIMLGDNLDSSLVRNNGSKTGFVRILEGELNGGSTL

Gene
cas3
Protein
CRISPR-associated endonuclease Cas3-HD
Organism
Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1)
Length
237 amino acids
Function
CRISPR (clustered regularly interspaced short palindromic repeat), is an adaptive immune system that provides protection against mobile genetic elements (viruses, transposable elements and conjugative plasmids). CRISPR clusters contain sequences complementary to antecedent mobile elements and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). Cas3 plus Cascade participate in CRISPR interference, the third stage of CRISPR immunity. Acts as a ssDNA and ssRNA nuclease, probably with both exo- and endonuclease activities. Activity is higher for DNA than RNA. Templates include 2',3'-cAMP and 2',3'-cGMP.
Similarity
Belongs to the CRISPR-associated nuclease Cas3-HD family.
Mass
27.077 kDa
Sequence
MSCKAFQGQTLREHIEAMLAAWEIVKNKYIPSIIRVMKTVGVKFTEEDADKFMKTLIILHDVGKCSEVYQKHLSNNEPLRGFRHELVSAYYAYNILKDMFKDETIAFIGALVVMMHHEPILMGQIRSLDKEELTPEVVLDKLRTFNGVMEGTESFIKSMIKEKLGVIPKVPSPTQEDVLREVIRLSVLARHRPDSGKLRMVVGALLIPLVLCDYKGAKEREGESPKFAEVLRVEMMK