Bacillus thuringiensis serovar kurstaki YBT-1520: YBT1520_25895
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Entry
YBT1520_25895 CDS
T03435
Name
(GenBank) cell surface protein
Organism
bthr
Bacillus thuringiensis serovar kurstaki YBT-1520
SSDB
Ortholog
Paralog
Gene cluster
GFIT
Motif
Pfam:
DUF11
bMG10
A2M_recep
Gram_pos_anchor
Motif
Other DBs
NCBI-ProteinID:
AHZ53753
LinkDB
All DBs
Position
complement(4965199..4975170)
Genome browser
AA seq
3323 aa
AA seq
DB search
MKQVLKCFNVVTMITLLLSIILPSPSAFATEINKKSWDELQGNDVKIKADQVNAEMYKGE
VAEREHVFQYKIENTGDTPIRELVIKQNNDNGIEFLSQSVKVNGEKLLENKVADFYVEEK
DNGGKVLSSNLKIQDLKSHEKMTVLIKARRAQHFNKEYKQKISVQKDQLQIGNMSVDVEG
LPSEEKLEANTDDEADSSKKAIGSTTDSKTKEVDGKLKVSVEDKNTSAQKTEIEKIKQPE
AEKQLEKEKKQSPLAVKQSDAEVQAASENASKVQIQTGDKQGFGDPLYSTIAPGNLVQTG
NVTLGLTSDHYGRQSMGYKTNKMTVDVDNDDSTFNSSTGAFPNIPAGSKVKKAYLFWTAA
MGLPGNIADRKVTEDQVRQPVKMRMGNKEYAEVTADSIRKADYLPYISNYSGSGAGYVAY
ADVTNIIAQQGISQTLTVANVPQIKDVTGGGYYWGNWNLILVYENYKETVKDMKIWEGLV
SQKSTAWTDISVNKINTPKEGAFKAEFSYFSSQGDPADNDGYAYDYGEYDFGLGYQKFKN
IKSKDNDVNDSSMTEVQVDGTNEFVTKKYPGYNPDWTNSFSTDIHTYHLEGPTQVKNDLK
EGKIRFRAYGGGGDIYVLNNATFVTEHNAPNLQVDKKALDSTGKEVKEIKAGEEFTYQIE
VKNDTKNNQAPVSNVKGFDKLDDRLEYVPGSIQYVSGSNKGNKTDDASDDEAEFVNNQID
FRVGEGANAKDGGVLKPGESTVITFKVKVKDSVQSDTTVKNVVVVKGQDSAEIKYETEDD
ANVTVTTPKEVPGEIEARKIASNKTPKLGEEVEYRITFKNKTKDGRLDVLTIEDELPSSL
EYVKDSLKAEGAKPEPVELKFENGKVIAKYPEIMDMEERSIVFKTKVKETAKIGEEIVNK
ATVRDKTNPPKNLEEKITPQHKAGKIAAKKKATNKKPRLGEEVEYQISFKNTVENGKLDA
VTIEDEIPANLEFVQGSVRAEGAAPNPVELKVENGKIIAKYPEITDTKERSIAFKVKVKE
EAKAGETIVNKAVVSEPNGQTEHPEEKITPDYKYGKVDVEKSVTNQTPKLGEEVEYRITF
YNTVENGKLEKVLVEDTLPKGVEYVKDSLKAEGIKPEPVELKVEDGKVMAKYPEITDTEK
RSIVFKVKVKDSAKVGEAIVNKAIAKDPKNEPVESKVVITPQSKKGEIAATKVVNNKKPK
LGEEIEYRISFHNTVENGKLEKVRVEDTIPKGLEYVENSIKAEGEAPEPVELAVENGIVK
AKYIDIMDMKERSIVFKVKVKEEVKVDKEIVNKAIVDDTKNPPIEPEERITPQHKDGIID
SKKTVDNPSPKLGEEVEYRISFKNTVENGKLEKVIIEDTIPNGLEYVKGSEKAEGDKPAP
LKLSVKDGKVIAEYDNITDMKERSIVFKVKVKEEAEVGKEIINKAIVDDMKDPKEPEAKI
TPLHKDGKIKAKKIVNNETPKLGEEVEYRISMKNTVKNGKLTDVTVEDTLPEGLEYVENS
LKAKGAGIDSVELKFENGKVMAKYPEITDTEERSIVFKVKVKEEVKVGKKIINKATIDDS
QNKPVNPTAEITPQYKDGKLEAKKIVNNETPKLREEVEYRISFKNTVEHGKLTEVKIEDD
LPNGLEYVKDSLKVEGSKPDPVELKFENGKVMAKYPEITDTKERSITFKVKVKGKVSDSI
VNEAIVSDTKHPPETPTAEIIPQHKDGKVKAKKTVNNETPKLGEEVEYRISFKNTVEDGK
LAEVKIEDTLPEGLEYVENSVKAEDTKPDPVELKMENGKVMAKYPEITDTEERSITFKVK
VKEEVKVGKKIVNKAIVDDTKNEPETPTAEITPQHKDGKVEAKKTVNNETPKLGEEVEYR
ISFKNTVENGKLAEVKIEDNLPNGLEYVKDSLRAEGTKPDPVELKVKDGKVIAKYPEITD
TEERSIVFKAKVKEEFKVGEGLVNKVVVDDTKDPTTSEVTITPEYKDGKLKAEKFVNNKK
PKLGEEVEYRISFKNTVENGKLVEVTVEDEIPAGLEYVENSLQAEGSKPSPVELKFENGK
VMAKYLEITDTKERSIIFKVRVKEEAEVGKEIVNKAIVVDTKNEPEEPHVEITPQYKDGK
IAAQKVANNHKPKLGEEVEYRISFKNTVENGKLAEVNIKDALPNGLEYVEGSITAEGSKP
KPVELHVKNNKVMAKYPEITDTEERSIVFKAKVKESVKVGEEIVNEAIVDDTKNLPEEPY
VPITPQYKDGKIEARKEVSNHEPKLGEEIEYRIIFNNTVKDGKLAEVKIEDKIPAGLEFV
EGSEKAEGEEPKPVELKVENGKVMAKYSEIMDTQERSIVFKVKVKDSVTIGKDITNKAII
HVDDPNHPVIDPTAKITPQYKDGKIAAHKKVNNHKPKLGEEIEYRISFNNTVKDGKLAEV
KIEDEIPFGLEYVKDSLKAEGDKPAPVELKEEAGKVSAKYENITDMKERSIIFKVKVKDS
VEVDKAIVNKAIVDDTKNPPERPEVDITPQHKAGKFKANKKVSKKDPKLGEEVEYRISFK
NTVENGKLAEVKIEDQLPNGLEYVKDSLKAEGNESNPVELKEEAGKITAKYENITDTAER
SIIFKVKVTEAVKVGKKIVNTAIVDDDNPKNPPQKPEAIITPEYKNGKIKAEKTVNNPAP
KLGEEVEYRITFRNVVEHGKLAKVKIKDELPNSLEFVEGSGRAEGDNPKPLHVKVKNGIV
LAEYPEITDTKERSIVFKAKVKEKAKIGEAIVNTAVVEDTINPPEKPNVAIQPQHKEGVL
QAEKTVSNHEPKLGEEVEYRISFENTVENGKLTEVKVEDEIPAGLEYVQDSIKSDGPEPN
PVELKVENGKVTAKYPEITDTKKRSIIFKVKVQETVQVGKEIINKAVVDDNNPTNPPVES
LIPITPQYKDGKLEARKEVSNHEPKLGEEIEYRITFNGTVDGGKLVDVKIEDEIPSGLEY
VKESLEAVGDKPVPTELKVENGKVTVKYPEITDTKERSIIFKVKVKESVKVGEEITNKAI
IHVDDPDHPVMEPTATIKPEYKDGKLKATKTVNNKEPKLGEEVEYRISFKNTVENGKLAE
VKVEDEIPAGLEYVQDSIRFEGAEPNPIELKMEFGKVIAKYLEITDTKERSIIFKVKVKA
APSKGITNRAVVDDKINPPLEPTVTILPKTKEDLKIPEEPKEPEVKPEEPKEPKEPEVKP
EEPKEPKEPKEPKEPKEPEVKPEGPKEPKEPEVKPEDPKEPKEPEVKPEEPKEPKEPEVK
PEDPKEPKEPEVKPEEPKDLKKPEVKPEKPEVRLEKLIKEPQVKVEKELPKTGGAHSWMM
SVGAGISFLVGGVLFVLGRRRKQ
NT seq
9972 nt
NT seq
+upstream
nt +downstream
nt
atgaagcaagtattgaagtgttttaatgtcgtaacaatgatcacacttcttctatccatc
atattgccttcgcccagtgcttttgctacagagataaataaaaaaagctgggatgagtta
caaggaaatgatgtgaaaattaaggcagatcaagtgaatgctgaaatgtataagggagaa
gtagcggagagggagcacgtatttcaatataagattgaaaatacgggagatacaccaatc
cgagaattagtaattaaacaaaataatgacaatggaattgagtttctttcgcaatctgtg
aaagtaaacggagagaagttacttgaaaataaggtagcggatttctatgtagaggaaaaa
gataatggaggaaaggttctttcttctaatcttaaaattcaagatttaaaatcacatgaa
aaaatgactgtattaataaaagctcgtcgtgcgcaacattttaataaagagtataagcaa
aaaattagtgtgcaaaaggatcaactacaaataggaaacatgtctgtagatgttgaaggg
cttccttctgaagagaagttagaagctaataccgatgatgaggctgacagtagtaagaaa
gctatcggatcaacaactgattcaaaaactaaagaagtggatggaaaattaaaagtatct
gtagaagataaaaatacatctgcacaaaaaacagaaatagagaagataaaacaacctgag
gctgagaagcaactagaaaaagagaaaaagcaatcacctttagcagtaaagcagagtgat
gcagaagtacaagctgcatcagaaaatgcttcgaaggttcaaatccaaacaggagataaa
caaggatttggagacccgttgtattctacaattgctcctggtaatttagtacagactggt
aatgtgacgcttggtttgacatctgatcattatggcagacaaagtatgggttataaaacg
aataaaatgacggttgatgttgataacgatgatagtacttttaattcgtcaacaggtgca
tttcctaacattcctgctggaagtaaagtgaaaaaggcttacttattctggacagcagca
atggggttaccaggaaatatcgctgatagaaaggttaccgaggatcaagtaaggcaacca
gtcaaaatgagaatgggaaataaagaatatgcagaggtaactgctgatagcataagaaaa
gctgattatctaccttatatttctaattactcaggtagtggcgcaggatatgtagcgtat
gcagatgtaacaaatataattgcacagcaaggtatttctcaaacgttgacagttgcaaat
gtgccacaaattaaagatgtaacaggtggcggctattactggggtaactggaatcttata
ttagtttatgaaaactataaagaaacagtaaaagacatgaagatttgggaagggctagtc
tctcaaaaaagtacagcctggacagatattagtgttaataaaataaacacaccaaaagaa
ggcgctttcaaggcggaatttagttatttttcatcgcaaggtgatccagctgataatgat
ggatatgcctatgattatggagagtatgattttgggttagggtatcaaaagtttaaaaat
attaaaagtaaagataatgatgttaatgactcatctatgacagaagtacaagtagatggc
actaacgaatttgttacgaaaaaatacccaggatataatccagattggacaaattctttc
agtacagatattcatacgtatcaccttgaaggacccactcaagtaaagaatgatttgaaa
gaaggaaaaatacgttttagagcatatggtggtggcggtgatatttacgtattaaataac
gccacattcgttacagaacataatgctccaaacttacaagttgataaaaaggcattagat
agtaccggtaaagaagttaaggaaattaaagctggtgaagagtttacgtatcaaattgaa
gtgaaaaatgatacgaaaaataatcaagcgccggtatcgaatgtaaaaggttttgataaa
ttagatgaccgtttagagtatgttccagggtctattcaatatgtttctggaagtaataaa
ggaaataaaacagatgatgcaagcgatgatgaagcggagtttgtaaataatcaaattgat
ttccgtgttggtgaaggtgctaatgctaaagacggcggtgttttaaagccgggtgaaagt
accgttattacattcaaagtaaaagtgaaagattctgtacaatcagatacaacagtaaaa
aatgtcgttgttgtaaagggacaagatagtgccgagataaagtatgaaactgaggacgat
gcaaatgttacggttactaccccaaaagaagttccaggggaaatagaggcgagaaaaata
gcttctaataaaacaccgaagttaggtgaagaggtagagtatcgtattacatttaaaaat
aagacaaaagatggacgtctagatgtattgaccattgaagatgaattaccaagtagtctt
gaatacgtgaaagatagtttgaaagccgaaggtgcaaaaccagagccagtagagctgaag
tttgaaaatggaaaagtaattgcaaagtatccagaaattatggatatggaagaaagaagt
atcgtctttaaaacaaaagtaaaagaaactgcaaaaattggtgaagaaattgttaataaa
gcaaccgttagagataaaacaaatccaccaaagaatctagaagagaagattacaccacag
cataaggccggtaaaattgctgcaaagaaaaaagcaacaaataagaagccgaggctagga
gaagaagttgaatatcaaattagcttcaaaaatacggtggaaaacggaaaactagatgca
gttacaatagaagatgaaattccagctaacttagaatttgttcaaggcagtgtgagagct
gaaggtgctgcaccaaatccagtagagttaaaagtagaaaatggtaagataatcgcaaaa
tatccagagattacggatacaaaagagcgaagcattgcctttaaagtgaaagtaaaagaa
gaggcaaaagcgggagaaacgattgttaataaagcggttgtgagtgagccaaatggacaa
actgagcatccagaggaaaagattacgccggattataaatacggtaaagtggatgtagaa
aaaagcgtaacgaatcaaacaccaaaactaggagaagaagtggaataccgaattacattt
tataatacggtagaaaacggaaaactagaaaaggtgctagtagaagatacactacctaaa
ggtgttgaatacgtgaaagatagtttgaaagctgaaggtataaaaccagagccagtagaa
ctaaaagtggaagatggcaaagtaatggccaagtatccagaaattacggatacagaaaaa
agaagtattgtttttaaagtgaaagtaaaagattcggcaaaagtaggggaggcaatcgta
aataaagcaattgcaaaagatccgaaaaatgagcctgttgaatcaaaggttgttattaca
ccgcaaagtaaaaaaggtgaaattgctgctacaaaggtagttaataataagaagccaaag
ttaggcgaagaaatcgagtaccgcattagttttcataatacggttgagaacggaaaacta
gaaaaggtgcgagtggaagatacaattccaaaaggtcttgaatatgtagaaaatagcatc
aaggccgaaggagaagcacctgaaccagtagaattagctgttgaaaatgggatagtcaaa
gctaagtatatcgatattatggatatgaaagaaagaagtatcgtctttaaagtaaaggtg
aaggaagaagtaaaagtagataaagagattgtcaataaagcaattgttgatgatacgaaa
aatccaccgattgaaccggaggaaagaattactccgcaacataaggatggaataattgat
tcgaagaagacagtagataatccatcaccaaaactaggagaagaagtagaataccgaatt
agctttaagaacacggtagaaaacggaaaactagaaaaggtaataatagaggatacaatt
cctaacggtttagagtatgtaaaaggcagtgaaaaggctgaaggtgataaaccagctcca
ttaaagttaagtgtaaaagatggaaaagttattgctgaatacgacaatattacggatatg
aaagaaagaagtattgtctttaaggtaaaggtgaaggaagaagcggaagtggggaaggaa
atcatcaataaggcaattgttgatgatatgaaagatccgaaagaaccagaagcgaaaatt
acaccattacacaaagatggaaaaattaaagcgaagaaaatcgtaaataatgaaacaccg
aagttaggagaagaagtagaataccgaattagtatgaaaaatacggtaaagaacggaaag
ctaacagacgtgacagtagaggatactttaccagaaggtttagagtatgtagaaaatagt
ttgaaagcaaaaggtgccggaatagattcagtagagctgaaatttgaaaacggtaaagta
atggcaaaatatccagaaattacggatacagaagaaagaagtatcgtttttaaagtgaaa
gtaaaagaagaagtaaaagtcggtaaaaaaatcattaataaagcaactattgatgattcg
caaaataagccagttaatccgacagcggaaattactcctcagtataaagatggaaaactt
gaagcaaaaaagatagtaaataatgaaacgccgaagttaagagaagaagtggaataccga
attagctttaaaaatacggtagaacatggaaagctaacagaggtgaaaatagaagatgat
ttaccaaatggattagagtatgtgaaagatagtttaaaagtagaaggttctaagccagat
ccagtggaattaaaatttgaaaacggtaaggtaatggcaaagtatcctgagattacagat
acaaaagagagaagtattacctttaaagtgaaagtaaaaggtaaagtgagcgattcaatt
gttaatgaagcgattgtgagcgatacgaaacatccgccagaaacaccgacagcagaaatt
attccgcaacataaagacggaaaagtgaaagcgaagaagacggtaaataatgaaacgccg
aagttaggagaagaagtagaataccgaattagttttaaaaacacggtagaagacggaaaa
ctagcagaggtaaaaatagaagatactttaccagaaggtttagagtatgtagaaaacagt
gtgaaagcagaagatactaagccggatccagtagaattgaaaatggaaaatggtaaggta
atggcgaagtatccagagattacggacacagaagaaagaagtatcacttttaaagtgaaa
gtaaaggaagaagtgaaagtcggtaaaaaaatcgttaacaaagcaattgttgatgatacg
aaaaatgaaccagaaacaccgacggcagaaattactccgcagcataaagacggaaaagtg
gaagcgaagaagacggtaaataatgaaacgccgaagttaggagaagaagtagaataccga
attagttttaaaaacacggtagaaaacggaaagctagcagaggtaaaaatagaagacaat
ttaccaaatggattagagtatgtgaaagatagtttacgagcggaaggtactaagccggat
ccagtagaactgaaagtgaaagatggaaaagtaatcgccaaatatccagagattacggat
acagaagaaagaagtatcgtctttaaagcgaaagtaaaagaagaatttaaagttggtgaa
ggccttgtcaataaagtagttgttgatgatacaaaagatccaacaacttcagaagtaaca
attacgccagaatataaagacggtaagcttaaagcagagaaatttgtaaacaataaaaaa
ccgaaattaggagaagaagtagaataccgaattagttttaaaaacacggtagaaaacgga
aaactagtagaggttacagtagaagatgaaattccagctggattagagtacgtggagaac
agtttacaagcagaaggttctaaaccaagtccggtagaattgaaatttgaaaacggcaag
gtaatggcaaagtatctagaaattacggatacaaaagaaagaagtattatctttaaagtg
agagtaaaagaagaggcagaagtaggcaaggagattgttaataaagcaatcgtagtagat
acaaaaaatgagcccgaagagcctcatgtggaaattactccgcaatataaagatggtaaa
attgctgcgcagaaagtggcgaataatcataaaccgaaactaggagaagaagtagaatac
cgaattagttttaaaaacacggtagaaaacggaaaactagcagaggtaaatataaaggat
gcattaccaaatggtttagagtatgtggagggcagtatcacggcagaaggttctaaaccg
aaaccagtagagctacatgtgaaaaataataaggtaatggcaaagtatccagaaattaca
gatacagaggaaagaagcattgtctttaaagcgaaggtaaaagaaagcgtaaaagtggga
gaagaaatcgtaaatgaggcaattgtagatgatacaaagaatctgccagaagagccttat
gtaccgattacaccacaatataaagatgggaaaattgaggcaagaaaagaagtaagtaac
catgaaccgaagttaggtgaggaaatcgaatatcgaattatttttaataatacggtgaaa
gatggaaaactagcagaggtaaaaatagaagataaaattccagctggattagagtttgta
gaaggaagcgaaaaagctgaaggtgaagagccaaaaccagtggagttgaaagtagaaaat
ggtaaggtaatggcaaagtattcagagattatggatacgcaagaaagaagtattgtcttt
aaagtgaaggtaaaagattcggttacaatagggaaggacattacaaataaagcgattatc
catgttgatgatccgaaccatccagtaattgatccgacagcaaaaattacaccacaatat
aaagatggtaaaattgctgctcataaaaaggtgaataatcataaaccgaagctaggtgaa
gaaatcgaatatcgaatttcatttaataatacggtgaaagatggaaaactggcagaggtt
aaaattgaggatgaaattccgtttggtttagagtatgtgaaagatagtctaaaagcagaa
ggtgataagccggccccagtagagttgaaagaagaagctggtaaggttagtgcgaagtat
gaaaatatcactgacatgaaagaaagaagcattatctttaaagtgaaggtgaaagattcc
gttgaagtggacaaggcaattgtaaataaagcaattgttgatgatacaaaaaatccacca
gagcgaccagaagtagatattacaccgcagcataaagctggtaaatttaaagctaataaa
aaggtaagtaaaaaagatccaaagctaggagaagaagtagagtaccgaattagttttaaa
aatacggtagaaaacggaaaactagcagaagtgaaaattgaggatcaactaccaaatgga
ttagagtatgtgaaggatagtttaaaagcagaaggtaatgaatcaaatccggtagagtta
aaagaagaagctggaaaaattacagcgaagtatgaaaatattactgatacagctgagcgt
agcattatctttaaggtaaaagtaacagaagcagtaaaagtcgggaagaaaatcgtgaat
acggcaattgtggatgatgataatccgaagaatcctccgcaaaaaccagaagcgattatt
acaccggagtataagaatggaaaaataaaagctgagaaaacagtaaataacccagctcca
aaattaggagaagaagtagagtatcgaattacgttccgtaacgtagttgagcacggaaaa
ttagcgaaggtgaaaattaaggatgaattaccaaacagtttagagtttgtagaaggtagc
ggaagagctgagggggataatccaaaaccgttgcatgtaaaagtgaaaaacggcatagta
ctcgcagaatatccagaaattacggatacgaaagaaagaagtatcgtctttaaagcaaaa
gtgaaagaaaaagctaaaattggcgaagcgattgtgaatacggcggttgtggaagatact
ataaatccaccagagaaaccgaatgtcgcgatacaacctcaacataaagagggtgtatta
caagctgaaaagacagtgagtaaccatgaaccgaagttaggagaagaagtagaatatcga
attagttttgaaaatacagtagaaaacggcaaactaactgaggtaaaagtagaggacgaa
attccagctggtttagaatacgtacaggatagtataaagtctgatgggccggaaccaaat
ccagtagaacttaaagttgagaatggaaaagtaacagcaaagtatccagaaattacggat
acgaaaaaaagaagtatcatctttaaagtgaaagtacaagaaacggtacaagtaggaaaa
gaaattataaacaaggcggttgtggatgataataatccgacaaatccaccagttgagtca
cttataccaattacacctcaatataaagatgggaaactagaggcaaggaaagaagtaagt
aaccatgaaccaaagctaggggaagaaatcgaatatcgaattacttttaacggcacagta
gatggcgggaagttagttgatgtaaagattgaagatgaaattccgtctggtttagagtat
gtgaaagaaagtctggaggccgtaggtgataagcctgtgccaacagaacttaaagtcgag
aatggaaaagtaacagtgaagtatccagaaattacggatacgaaagaaagaagtatcatc
tttaaagtaaaggtaaaagaatcggtaaaagttggagaggaaataacaaataaagcgatc
attcatgtagatgatccagatcatccagttatggaaccgacagcgacaataaagccagaa
tataaagatggtaagttaaaagcgacgaagacagtaaataataaagaaccgaagctagga
gaagaagtagaataccgaattagtttcaaaaatacggtagaaaacggcaaactagcagag
gtaaaggtagaagatgaaattccagccggtttagagtacgtgcaagatagcattagattt
gaaggggctgaaccaaatccaatagagttaaaaatggagtttggaaaagtaatagcaaag
tatctagaaattacagatacgaaagaacgtagtattatttttaaagtgaaggtaaaagca
gcaccaagtaaagggataacaaatagagcggtagtggacgataaaataaatccaccactt
gagcctacagttacaattttaccgaaaacaaaagaagatcttaagataccagaagagccg
aaggaaccagaagtgaagccggaagagccgaaagaaccgaaggaaccagaagtgaagccg
gaagagccgaaagaaccgaaagaaccgaaagaaccgaaagaaccgaaagaaccagaagtg
aagccagaagggccgaaagaaccgaaggaaccagaagtgaaaccggaggatccgaaagag
ccgaaggaaccagaagtgaaaccggaggaaccgaaagaaccaaaagaaccagaagtgaag
ccagaagatccgaaagagccgaaggaaccagaagtgaaaccggaggaaccgaaagatctg
aagaaaccagaagtgaaaccggagaaaccggaagtaagactggaaaagttaattaaagaa
ccgcaagtaaaagtagaaaaagaattaccgaaaacagggggagcacattcatggatgatg
tcagttggtgcgggaatttcattcttagttggcggagtattattcgtattaggtagaaga
agaaaacaataa
DBGET
integrated database retrieval system
