Bifidobacterium adolescentis 22L: BADO_0264
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Entry
BADO_0264 CDS
T03260
Name
(GenBank) fatty acid synthase Fas
KO
K11533
fatty acid synthase, bacteria type [EC:2.3.1.-]
Organism
badl
Bifidobacterium adolescentis 22L
Pathway
badl00061
Fatty acid biosynthesis
badl00074
Mycolic acid biosynthesis
badl01100
Metabolic pathways
badl01212
Fatty acid metabolism
Module
badl_M00083
Fatty acid biosynthesis, elongation
Brite
KEGG Orthology (KO) [BR:
badl00001
]
09100 Metabolism
09103 Lipid metabolism
00061 Fatty acid biosynthesis
BADO_0264
00074 Mycolic acid biosynthesis
BADO_0264
09180 Brite Hierarchies
09181 Protein families: metabolism
01004 Lipid biosynthesis proteins [BR:
badl01004
]
BADO_0264
Lipid biosynthesis proteins [BR:
badl01004
]
Fatty acid synthase
Bacteria type
BADO_0264
BRITE hierarchy
SSDB
Ortholog
Paralog
Gene cluster
GFIT
Motif
Pfam:
Fas1-AflB-like_hel
Acyl_transf_1
DNA_pol_B_N
ketoacyl-synt
Ketoacyl-synt_C
MaoC_dehydratas
FAS_AT_central
SAT
Fas_alpha_ACP
FAS_I_H
Motif
Other DBs
NCBI-ProteinID:
AII75690
LinkDB
All DBs
Position
342334..351672
Genome browser
AA seq
3112 aa
AA seq
DB search
MNTFFLDRLNSEPHALAFAGQSTPWPVALADQSANPALDEALHTHAAAAQALLYPVSAEL
LATTGRPVDLFGFEPNPARLGAAAAASASVPGIALTQLGALLDAAALGYNPAQAKPVVVL
GHSQGVLAVHMVQAICEAGSIDAAAAKIDEILAIATLIGVAGTRQARQLGLAARHGEATP
MLSVKDITRAQVDALIERVDGARGPIAVAVTNSATHYVLSGYPEDLAAFGVEVAKEHKRQ
AKLREEKVRGGRVFGPTLEYLDVTLPFHSPLMADAVSQAVAWAEACGINADHARELAAEV
LLNHVDWAARVRALMKSTDPSALWVLDFGPGNTVGKLFSTVAQGTGVGVVEASTVADRGA
LSTLETLPERTQNWTRFAPSIIHTSAGDKVRTAFTELTGKAPVLLAGMTPTTVEPEIVAA
AANAGYWAELAGGGQVTASVFDRHVAKLEEELEEGRTVEFNAMFMDRYLWNLQFGSQRIV
PKKRASGTPIDGVVVSAGIPEFDEAVELIHNLNADGFPYVSFKPGTVDQIRQVVRIAKAV
APTKVLIEVEGGSAGGHHSWESLDDLLLSTYAEVREQSNLVLVVGGGIGTPERGADYITG
EWAAEYGRPLMPVDGVLVGTAAMTAKEAHTSPEVKQMLVNTPGIPVKGDGNDPFAPLGEQ
WVPSGQAKGGVTSGLSHLHADIYELENSSARCGRLLVRVMKHPEELESRRDEIIAALNAT
AKPYFGDLKTMTYLEWAQRFADLSFPWVDETYADRFLHLLQRIEARVTTQESGEFASLFA
SRADVEADPNAAIAKLAETYPQAGKLTVTPMDEAWFPVLVREYPKPMPFVPVIDNDLLRW
WGQDQLWQSEDSRYSADSVRIIPGPISVAGITTVDEPVADILGRFEAAMVKRVSAESASA
DKTAFAQLGAAVSAEEFIRKSPNISWVGHLMANPAYGTANGDANYEIRKVAVEGSVEKYD
LDIHLDTFWDNDPDGGASKHAVRDIVIPLNVDGNESGLFPVVDRDRLPEHVYRMLADTAG
IGNTAITGDKLTAMPQIEEVSDKTAFPFGQAHTGYTLSANLGFDHEAATGGALPSDLVPS
RIAPDALVGPAWPAIYAALGSVYVNGFPVIEGLLNAVHLDHLIELEVSEDELLKHTGERI
ELTSWADDYFESASGRVVTIHVTHTAQDGTLLANETERFAIRGRAYSDALPPEAPDYGGI
EAEIESTPRRLLRRVKVVAPHEMTAFARTSGDFNPIHTSHRGAAVSGLAAPLVHGMWLSA
TAQYAVQALDEKGAHYEIAGWTYNMYGMVQLDDEVEISIERVGRVAHAGMVLEVTSRIDG
NIVSRGTAIVRAPKSAFVYPGQGIQKQGMVLDERAKSPAAREVWERADKVTREKLGFSIL
AVVRDNPKELTANGVTYRHPEGLLNLTQFTQVALATVAFAQTARLREAGADIWPAYFAGH
SLGEYNALSSFAGVIPLETVLELVFHRGSTMHHLIPRDEKGRSNYRMGALRPNQFGVGDD
GVREYVESVSKASGEFLQIVNYNLAGQQYAVAGTIAGLKALKADSARRVAEYGGKPAFML
VPGIDVPFHSTLLRKGVPEFRDKLDALLPKHIDYRGRLVGRYIPNLVAVPFEMTKEFAAK
ILEVVPSERIKAALDDPKVWDSYAEDDQKLGRLLLTELLSWQFASPVRWIETQALLFGSA
EQGGLGVEEYVEVGLGNAPTLANLGAKTLRLPQFAGRDVTVYNVGRDEGRVYMTDSDSLV
ADDDADDSAAAAPAAASAPSAAAAAPAAVAAAPVAAAPAVAAPAAPAGAPSGAAVADIPF
NASDAIAMLLAYSAKVRPDQIGESDTTDTLTNGVSSRRNQLLMDISSELGVASVDGAAEA
TVKALSALVNKVAPNYKAFGPVLSDIVRDRVRGLFGAAGVKLGQITKRVTDTWQLGEGWA
SHVVAALVLETREGASSRGGDLASLSTEAASNAAAANALIDAAVQKVASDKGVAVAMPSA
GGAAGGAVVDSAALDAFAAKVTGADGVLASTAKFVLNQLGVTAPVADDSADENAAVVAAV
EAELGSDWPKQVEPRFDERKAILFDDRWASVREDLSRAYYDNDASALDGSFIGLGKAVAD
EAAWYAGKTADAELAAAFKRVAGEALEQTDESAEASRFAGDIAVVTGVAPNSIAAQVVNG
LLAGGATVVATSHSFRQSVKAWAKQTYREHATGDAKLWLVPANLSSYRDVDALVKWVGNV
QKKTSGATTTILKPAYEPSLFFPFAAPPVHGTLADSGELFESQARLMLWGVERAITGFAK
IGADTDVQHKLHVILPGSPNRGVFGGDGAYGEVKSAFDAIVNRARAEKVWSSRVTFAHPK
IGWVRGTGLMGGNDPLVEVVERHGLKTYSTAEIAVKLLELSTKESREQAVKAPLDVDLTG
GLGSEPIDIKALRAEAMEDAAKAAAAEAGDEDKQGDCAAAATLIKALPSPRAPRQAKVDL
KDWQHVTARPEDEIVIVSIGELGPWGSGRTRFEAELGIHSDGKVDLSAGAVLELAWNMGL
LTWNDSPKPGWYDTDGNLVPEEDIAERYHDEVVARSGVRPFEEGMGNDYKDGADEEEAEV
FLDHDVTFSVPTREIAEEYVKLDEAHTSYAADAESGEWNVTRHAGSMIRVPRRAAMTRTV
GGQFPKGFDPVKWGIPASMVGDVDKIALWNIVTTVDAYLSAGFTPAEILEAVHPSMVAST
QGTGFGGMASMRKLYLDRFLNHEIPTDILQEALPNVVAAHVMQSYIGGYGNMIQPVSACA
TAAVSLEEGADKIALGKADFVVTGAIDDIGVESVIGFGNMNATANSEEMYAKGIDARFFS
RANDRRRGGFVESQGGGTILLTRGDIALKLGLPVAGVVGFVHSYADGAHTSIPAPGLGAL
AAGMGGKDSKLVHDLAKLGVTPDDIAVVSKHDTSTNANDPNESELHNTLAHAIGRTDGNP
LFVISQKSLTGHAKGGACIFQVNGLTQLFKSGVVPANAALDCVDPKLKRDDHMVWLREPL
KVGSVKAGLATSLGFGHVSGFAAIVNPGAFEASVANTAGEDALNEWRDRANARLAAGQRR
LEEGMMGRAALYEPIDNRRFHEDGRGYDAHEVEKAMLLDPNARLASTGYFEA
NT seq
9339 nt
NT seq
+upstream
nt +downstream
nt
atgaacaccttttttcttgatcgactgaacagcgagccccacgcgctcgccttcgccggc
caatccaccccgtggccggtggcgctcgccgaccagagcgcgaatccggcgctcgacgag
gccctgcacacccatgcggccgccgcgcaggcgctgctgtatccggtgtccgccgagctg
ctcgccaccaccggacgcccggtcgacctgttcggcttcgaaccgaacccggcacgtctg
ggcgccgcagccgcggcttccgccagcgttcccggcatcgcgctgacccagctgggcgcg
ctgctcgacgccgccgcactcggctacaatccggcccaggccaagccggtcgtggtgctc
ggccactcccagggcgtgcttgccgtgcatatggtgcaggcgatctgcgaagccggttcc
atcgacgcagccgcagccaagatcgacgagattcttgcgatcgcaacgctgatcggcgtc
gccggcacccgtcaggcacgccagctcggtctcgccgcacgccacggcgaggcgaccccg
atgctgtccgtcaaggacatcacccgcgcccaggtggacgcgctgatcgaacgcgtcgac
ggcgcacgtggcccgatcgccgtggccgtcaccaattccgccacgcattacgtgttgtcc
ggctatccggaggacctggccgcattcggcgtggaggtcgccaaggaacacaagcgtcag
gccaagctgcgcgaagagaaggtgcgtggcggccgcgtgttcggcccgacgctcgaatat
ctcgacgtgaccctgccgttccacagcccgctgatggccgatgccgtctcccaggccgtc
gcatgggccgaggcctgcggcatcaacgccgaccatgcccgtgagctcgccgccgaagtg
ctgctcaaccatgtggattgggccgcccgcgtgcgcgccctgatgaagtccaccgatccg
agcgccctgtgggtgctggacttcggtccgggcaacaccgtcggcaaactgttctccacc
gtggcccagggcaccggcgtcggcgtggtggaagcctccaccgtggccgatcgcggcgcg
ctctccacgcttgagaccctgccggaacgcacccagaactggacgcgtttcgcgccgagc
atcatccacacgtccgccggagacaaggtgcgcaccgcgttcaccgaacttaccggcaag
gctccggtgctgctggccggcatgaccccgaccaccgtggagccggagatcgtggcggct
gccgccaacgccggctactgggccgagctcgcaggcggcggccaggtcaccgccagcgtg
ttcgaccgtcacgtggccaagctcgaggaagaactcgaggaaggccgcaccgtcgaattc
aacgccatgttcatggaccgctacctgtggaacctgcagttcggctcccagcgcatcgtg
ccgaagaagcgcgccagcggcacgccgatcgacggcgtcgtcgtctccgcaggcattccg
gaattcgacgaggccgtggaactcatccacaacctcaacgccgatggcttcccgtacgtg
agcttcaagccgggcaccgtcgaccagatccgccaggtggtgcgcatcgccaaggccgtc
gcgccaaccaaggtgctcatcgaggtcgaaggcggctccgcaggcggccaccactcttgg
gaatcgcttgacgatctgctgctgagcacctacgccgaagtgcgcgagcagtccaacctc
gtgctcgtggtcggcggcggcatcggcacgccggaacgcggcgccgactacatcaccggc
gaatgggccgccgaatacggccgtccgctcatgcctgtggacggcgtgcttgtcggcacc
gccgccatgaccgccaaggaagcccacaccagccccgaagtcaagcagatgctcgtcaac
accccgggcattccggtcaagggcgatggcaacgatccgttcgccccgctgggcgagcag
tgggtgccgtccggccaggccaagggcggcgtcacctccggtctgagccacctgcacgcc
gacatctacgagctggagaactcctccgcccgctgcggccgcctgctggtgcgcgtcatg
aagcacccggaggagctggaaagccgtcgcgacgagatcatcgcggcgctgaacgccacc
gccaagccgtatttcggcgatctgaagaccatgacctaccttgagtgggcccagcgtttc
gccgacctctccttcccgtgggtggacgaaacctacgccgatcgcttcctgcacctgctg
cagcgcatcgaagcccgcgtcaccacgcaggaaagcggcgaattcgcatcgctgttcgct
tcccgcgctgacgtcgaagccgatccgaacgccgcgatcgccaagcttgccgaaacctac
ccgcaggccggcaaactgaccgtcaccccgatggacgaggcatggttcccggtgctcgta
cgcgagtatccgaagccgatgccgttcgtgccggtcatcgacaacgacctgctgcgttgg
tggggccaggaccagctgtggcagtccgaggactcccgctattccgccgattccgtgcgc
atcatccccggcccgatctccgtggccggcatcaccaccgtggacgagccggtggccgac
atcctcggccgcttcgaagccgccatggtcaagcgcgtgtccgccgaatcggcgagcgcc
gacaagaccgccttcgcccagttgggcgcggccgtctccgccgaggaattcatccgcaaa
tccccgaacatctcctgggtcggccacctcatggccaacccggcgtacggcaccgccaac
ggcgacgccaactacgagatccgcaaggtggccgttgaaggcagcgtcgaaaagtacgac
ctcgacatccatctcgacaccttctgggacaacgatccggacggcggcgcctccaagcac
gccgtacgcgacatcgtcattccgctgaacgtcgacggcaacgaatccggcctgttcccg
gtcgtggaccgcgaccgtctgccggaacacgtctaccgcatgctcgccgacaccgcgggc
atcggcaacaccgccatcaccggcgacaagctcaccgccatgccgcagattgaggaagtg
tccgacaagaccgccttcccgttcggccaggcgcacaccggctacacgctgtccgccaac
ctcggtttcgaccatgaggccgctaccggcggcgcgctgccgagcgacctcgtgccgtcc
cgcatcgccccggacgcgcttgtcggaccggcttggcccgccatctacgcggccctcggc
tccgtgtacgtcaacggcttcccggtcatcgaaggcctgctcaacgccgtgcatctcgac
cacctcatcgaactcgaggtgagcgaggacgagctgctgaagcacaccggcgagcgcatc
gagctcaccagctgggccgacgactacttcgaatccgcctccggccgtgtggtgaccatc
cacgtcacgcacaccgctcaggacggtacgctgcttgccaacgaaaccgagcgtttcgcc
atccgcggccgcgcgtactccgacgcgctgccgccggaagcgcccgactatggtggaatc
gaagccgaaatcgaaagcactccgcgccgtctgctgcgtcgtgtgaaggtcgtcgctccg
cacgagatgaccgctttcgcccgtacttccggcgatttcaacccgattcacacctctcat
cgcggtgccgccgtctccggtctcgccgcgccgctcgtgcacggcatgtggctgtccgcc
accgcccagtacgcggtgcaggcgctcgacgagaagggcgcgcattacgagatcgcaggc
tggacgtacaacatgtacggcatggtgcagctcgacgacgaggtggagatctccatcgaa
cgcgtcggccgtgtggcccacgccggcatggtgctggaagtgaccagccgcatcgacggc
aatatcgtgtcccgtggcaccgccatcgtgcgtgcgccgaagtccgccttcgtctacccg
ggccagggcatccagaagcagggcatggtgctcgacgagcgtgccaagtccccggccgca
cgcgaggtgtgggagcgcgccgacaaggtgacccgcgagaagctcggcttctccatcctc
gccgtcgtacgtgataatccgaaggaactgaccgccaacggcgtgacctaccgtcatccg
gaaggcctgctcaacctgacccagttcacgcaggtggcgctcgccaccgtggcgttcgcc
cagaccgctcgtctgcgtgaagccggcgcggacatctggcccgcctacttcgcgggccac
tcgctgggcgaatacaacgcgctgagctccttcgccggcgtgattccgctggaaaccgtg
cttgagctcgtgttccaccgtggctccaccatgcaccacctcatcccgcgtgacgagaag
ggccgttccaactaccgtatgggcgcgcttcgtccgaaccagttcggcgtgggcgacgac
ggcgtgcgcgaatacgtcgaatccgtttcgaaggcttccggcgagttcctgcagatcgtc
aactacaaccttgccggacagcagtacgccgtggccggcaccatcgccggtctgaaggcg
ctgaaggccgattccgcccgccgcgtcgccgaatacggcggcaagccggcgttcatgctg
gtgccgggcatcgacgtgccgttccactccacgctgctgcgcaagggtgtgccggagttc
cgcgacaagcttgacgcgctgctgccgaagcacatcgactaccgtggccgtctggtcgga
cgttacattccgaacctggtggccgtgccgttcgagatgaccaaggaattcgccgcgaag
atcctcgaggtcgtgccgtccgagcgcatcaaggccgcgttggacgatccgaaggtgtgg
gattcctacgccgaggacgaccagaagctcggccgtctgctgctcaccgaactgctgagc
tggcagttcgcctccccggtgcgttggatcgaaacccaggcgctgctgttcggttccgcc
gaacagggcggcctcggcgtggaggagtacgtcgaggtgggtctcggcaacgctccgacg
ctcgccaacctcggcgccaagacgctgcgcctgccgcagttcgccggccgtgacgtgacc
gtctacaacgtcggccgcgacgaaggccgcgtctacatgaccgattccgattccctcgtt
gccgacgacgatgctgacgattccgccgcagccgctccggcagcagcttcggctccgtcc
gctgccgccgcagcgcctgccgcagtcgccgcagcacccgtcgccgcagcaccggctgtc
gccgcaccggccgcacctgccggcgctccgtccggcgccgccgtcgcggatattccgttc
aacgcttccgacgcgatcgccatgctgctggcatattcggcgaaggtgcgtccggaccag
atcggcgaatccgacaccaccgacaccctgaccaacggcgtctcctctcgccgtaaccag
ctgctcatggacatcagctccgagctgggcgtggcttccgtggacggcgccgccgaagcg
accgtcaaggcgctgagcgcgctggtcaacaaggtcgctccgaactacaaggcgttcggt
ccggtgctgtccgacatcgtccgcgaccgtgtgcgcggcctgttcggcgccgccggcgtg
aagctcggccagatcaccaagcgcgtgaccgacacctggcagctcggcgaaggctgggcc
tcccacgtggtcgcagcccttgtgctggaaacccgcgaaggcgccagctcccgcggtggc
gacctcgcctcgctgagcaccgaagccgcttccaacgcggccgccgccaacgcgctgatc
gacgcggccgtgcagaaggtcgcctccgacaagggcgtggccgtcgccatgccgagcgca
ggtggcgcagccggcggtgccgtggtcgattccgcagccctggacgcgttcgcggccaag
gtgaccggtgccgacggcgtgctcgcctccaccgccaagttcgtgctgaaccagctgggc
gtcaccgctccggtggccgacgactctgccgacgagaacgccgccgtggtggccgccgtc
gaagccgagctcggctccgactggccgaagcaggtcgagccgcgcttcgacgagcgcaag
gccatcctgttcgacgaccgttgggcatccgtacgtgaggacctgtcccgcgcctactac
gacaacgacgcctccgcactggacggcagcttcatcggcctgggcaaggccgtcgccgat
gaagccgcatggtatgcgggcaagaccgctgacgccgagcttgccgccgcgttcaagcgc
gtggccggcgaggcgctcgagcagacggacgaatccgccgaagcaagccgtttcgcaggc
gatatcgccgtcgtgaccggcgttgccccgaactccatcgccgcgcaggtcgtcaacggc
ctgctggccggcggcgcgaccgtcgtggccacctcgcatagcttcaggcagagcgtgaag
gcatgggccaagcagacctaccgcgagcacgccaccggtgacgccaagctgtggctcgtt
ccggcgaacctctccagctaccgtgacgtggacgcgcttgtgaagtgggtcggcaacgtg
cagaagaagacctccggcgcgaccaccacgattttgaagcccgcctacgagccgagcctg
ttcttcccgttcgccgctccgccggtgcacggcacgttggccgattccggcgaactgttc
gaatcgcaggcgcgcctcatgctgtggggtgtggaacgtgcgatcaccggcttcgcgaag
attggcgccgacaccgacgtgcagcacaagctgcatgtgatcctgccgggctccccgaac
cgtggcgtcttcggcggcgacggcgcgtacggcgaggtcaagagcgccttcgacgcgatc
gtcaaccgcgcccgcgccgaaaaggtgtggtccagccgcgtcaccttcgcccatccgaag
atcggctgggtgcgtggcaccggcctgatgggcggcaacgatccgctggtcgaagtcgtg
gaacgtcacggcctgaagacctactccaccgccgaaatcgcggtcaagctgctcgagctg
tccaccaaggaatcccgcgagcaggccgtcaaggccccgctcgacgtggacctgaccggc
ggcctcggcagcgagccgatcgacatcaaggcactgcgcgccgaagccatggaggacgcg
gccaaggccgctgccgccgaagccggcgatgaggacaagcagggcgattgtgccgctgcg
gcaacgctgatcaaggcgctgccgagcccgcgcgccccgcgtcaggcgaaggtcgatctg
aaggattggcagcacgtcaccgcccgtccggaagacgagatcgtcatcgtctccatcggc
gagctgggtccgtggggctccggccgcacccgtttcgaagccgaactcggcatccactcc
gacggcaaggtcgacctgtccgccggcgcggtgctcgaactggcttggaacatgggcctg
ctgacctggaacgacagtccgaagccgggctggtacgacaccgacggcaacctggtgccc
gaagaggacatcgccgaacgctaccacgacgaggtcgtggcccgctctggcgtgcgtccg
ttcgaagagggcatgggcaacgattacaaggacggtgccgacgaggaggaggccgaggtg
ttcctcgaccacgatgtgaccttctccgttccgacccgtgagatcgccgaggaatacgtc
aagctcgacgaagcccacaccagctacgcggccgacgccgaatccggcgagtggaacgtc
acccgccacgccggctccatgatccgcgtgcctcgccgcgcggccatgacccgcaccgtc
ggcggccagttcccgaagggcttcgacccggtcaagtggggcattccggcctccatggtc
ggcgacgtggacaagatcgccctgtggaacatcgtcaccacggtcgacgcctacctgtcc
gcaggcttcaccccggccgagatcctcgaagccgtgcacccgtccatggtggcctccacg
cagggcaccggcttcggcggcatggcctccatgaggaagctgtacctggaccgcttcctc
aatcacgagattccgaccgacatcctgcaggaagccctgccgaacgtcgtcgcggcacac
gtgatgcagtcctacatcggcggctacggcaacatgatccagccggtctccgcctgcgcc
accgccgccgtctcccttgaggaaggcgccgacaagatcgccctcggcaaggccgacttc
gtggtcaccggcgcgatcgacgacatcggtgtggaatccgtgatcggcttcggcaacatg
aacgccaccgccaactccgaggagatgtacgccaagggcatcgacgcgcgcttcttctcc
cgtgccaacgaccgtcgtcgcggcggcttcgtcgaatcgcagggcggcggcaccatcctg
ctgacgcgcggtgacatcgcgctgaagctcggcctgccggtcgccggcgtggtcggattc
gtccactcctacgccgacggcgcgcacacctccatcccggctccgggactgggcgcgctc
gcagcgggcatgggaggcaaggactccaagctcgtgcatgacctcgccaagctcggcgtc
acgccggacgacatcgccgtggtctccaagcacgacacgtccaccaacgccaacgacccg
aacgagtccgaactgcacaacacgctggcccacgccatcggccgcaccgacggcaacccg
ctgttcgtgatctcccagaagtcgctcaccggccatgccaagggcggtgcctgcatcttc
caggtcaacggcctgacccagctgttcaagtccggcgtcgttccggcgaacgcggccctc
gactgcgtcgacccgaagctcaagcgcgacgaccacatggtctggctgcgcgagccgctg
aaggtcggttccgtcaaggccggcctggccacgtcgctcggcttcggccacgtgtccggc
ttcgccgcgatcgtcaacccgggcgccttcgaggcttccgtggcgaacaccgccggcgag
gacgcgctgaacgaatggcgcgaccgtgccaacgcgcgtctcgccgccggccagcgtcgc
cttgaagagggcatgatggggcgcgccgcgctctacgagccgatcgacaaccgccgcttc
cacgaggacggccgcggctacgacgcgcacgaggtggagaaggccatgctgctcgatccg
aacgcgcgtctcgcgtccaccggctatttcgaagcgtga
DBGET
integrated database retrieval system