Rhodopseudomonas boonkerdii: E0H22_13355
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Entry
E0H22_13355 CDS
T07799
Name
(GenBank) hypothetical protein
Organism
rbk
Rhodopseudomonas boonkerdii
SSDB
Ortholog
Paralog
Gene cluster
GFIT
Other DBs
NCBI-ProteinID:
UGV26591
LinkDB
All DBs
Position
2917285..2927082
Genome browser
AA seq
3265 aa
AA seq
DB search
MTNSGSGSISTNGNTAHGIYVLSVGGHGGTGGDVDVSLGGGGGTGGNGGSPGNVLVDNRL
DITTNGAGSAGIWAQTIGGRGGDGGAAQACIFCSGGRGASAGVGGSVNVVNNSAIRTMLD
NSFGIFAQSIGGYSGNGGGSYGLLSFAGDASSGGNGGTVDVRTDGGSIHTSGVGSTAIFA
QSGGGGGGAGGTGAGLIGFGGGGGTAGTGEAVTVVNRATLTVDGNLSSGIFAQSYGGGGG
TAGVGAGLVGIGGSGGGGGAGGDVRVENYAQINVGGSGALGSGSAAGIYAQSVGGGGGSG
GLGAGLVGVGGSGGGAGNGGAVTVINGGDILHAVCANCVQAPTIFAQSVGGGGGDGGSSG
GLIAVGGRGGAGGDGGKVAVTNNGNLTAYGDYSSGLFAQSVGGGGGNGGSSYGIGVFASV
AVGGTGGAGGNGGQVCVNANAGCDGIDPALAAKTIMTQGFKSAGIFAQSVGGGGGNGGAA
ISVSAAIFGGASVGVGGDGSNGGIAKDVFVGSAGSISTAGAYSAGILAESVGGGGGSGGY
AISVSAGPAYGALAFSLGGSGGAGNIAGNVTVDSRSNITTNGVFSAGIQASAIGGGGGDG
GFSISTAAALAGLSLGIGGGSGGGADGGVVNVTSIGNITTGTQAGGGLASANSAGIFAQS
IGGSGGTGGFAIAASGGVYGNVSVGVGGDGGKGGNGLAVTVHNNDNASTNNKVTTWGDLS
DGIFAQSIGGSGGNGGFSVAAGGALYGSVNLSFGGAGNGGGNGGVVDVTSYGAIETHGAK
ANGIFAQSVGGGGGNGGFSAAAGGAQYGAVSLSLGGAGAQGGDGNNVTVRNNGAIQTGGL
QSNGILAQSVGGGGGNGGLALGLGGSEYASLALAFGGTGANGGIGQAVRVDSAGAIATGS
DQSNGILAQSIGGAGGNGGAAVAGTLTIDSGIGVSMAVGGKAGDGAKGGDVHVGTTADVT
TAGLGSNGILAQSIGGSGGNGGLSGAISVSAAGGAAFTGSTGGNAGIGNTAGKVEVITNN
NITTTGGSNANGIYAQSVGGGGGNGGFSLLLAASYDGTSGPTPKTVGGAGGVGGTGNVVN
VQSTGTVETRGSVSNGIFAQSVGGGGGRGGFSIGASLSYGGATEVNSVGGAGGTGNTAAQ
VSVVAAASASSSIANTSVKTQGDGSVGILAQSIGGGGGQGGFSIAGSFNAGGNANANSVG
GSGGTGGDSLNGCTAGGLNCQLGDAGYVAAVQVTNTGNIRTAGRNASGIQAQSIGGGGGD
GGFSIGVSGTVSDSTAKLQTVGGSGGAAGKGSDVIVLNNAFANATNAITTAQDLSYGILA
QSVGGGGGNGGFAISGSLSTGGGAEANATGGQGSGGGNAGRVTVTSGGGIFTGTPILAGS
VVVGATGGQGSIGILAQSIGGGGGSGGFAGGLSLGIGGDAATNTTGGNGSVGGDGGIVTV
NTLAGAVIQTFGDNATGILAQSVGGGGGNGGFSIGASFNNSDGKSAANTIGGRGGAGGAG
LAVTVNNQASIQTFGLASDGIIAQSIGGGGGNGGFAISGSVSLGGDATNNTIGGSGGGGG
NAGTVDVVNSGAIQVARAGTIGILAQSVGGGGGNGGFSGGVAFTNSGDAKNTVGGTGTGV
GGLAGNADKVTVTNSGAITAGGDKGIGIMAQSVGGGGGNGGFAITAGGSTSAASVSDSVG
GSGGAGGTGGQVVVVNNTGGTLTTNGAMAYGIVAQSVGGGGGNGGFSTNANFSLGGDATS
KVGGGAGGGGGSSSTVNVDNYDVVHTKGVQSTGILAQSIGGGGGSGGFAGALTFSSGGSV
NNQVGGGSGGTGSSADSVTVFNHAGAAIVTDLNNSVGILAQAIGGGGGSGAFTLSGAVTT
NGDGYSQSVGGNGGAGGSAAFNAANVAILVSVQNDGIVTTKGRNSIGILAQSIGGGGGNA
GVTVSGAYSSSGGASTTVGATGGGGGDAGAVKVINNGTINVQGANSIGIYAQSVGGGGGN
AGFTGNLNFTDSTKKQETKVGSQLGAAGGNGGDVTVISTGSINTTGTNSIAVFAQSIGGG
GGNNALAIDAQTGSVSTSSIDIGSFFTSAPSGSKGNVIVDLSGGTVSSSGDLAYGILAQA
IGAGGGNGAVVVPDPLTVGAGGLTIGLGSLGAIGDGSPLTATNANAITTTGVGAAGYIGQ
SIGGGGGMGSATGDLTFTATGPLTLTLGGSAGSGSGGTTRVTNTAASITTGNGPAIASGD
GAVALIAQSIGGGGGGSIGAFGVVTGTAGPVQITLGGAETGTNNGGELALKSGNLITTYG
RFAAGLVGQTIGGGGGYGSVTAAEGISAAGVQFQLGSTGGTGGAADPSQLSNVVIGAGTI
TTNGKISDGVVAQAIGGGGGLAGFVSDGGQLPPLASSTLGALAGGGDGATINVSNASAIV
TKASGSIGAIVQSIGGGGGTAQAYGVSNSAAAVTLGAAAGAGGAAGSVNFQTSGGVTTNG
VNAHGIVAQSIGGGGGLFQAFDNAGNAVVPTVVGSPASSGNGGAVNVKVDAGADIRTTGD
GAYGIIAQSIGGGGGLVGGGAFVNTLGQAGPFAGSAGGAGVAGTVAVNVQSNVVVTGTGS
TAIYGQSTGAAGGGANIDVTLGNATLGTNQLVIGGANGATTTNAVRFAGGAANTLTTYAS
LATMAGINGTAVTGGIGNEAITSYGHIVGSIDLGSGTNTLNNKAYNNNPSLFAGVFDAGP
TINLNGPAAGNVMTNDGLFSPGALSRVMTTNLNGNFVQSASGSCGTFGQATSTCGYYAVD
LDLKSLTADRLNVTGTANVSGAVVVNIGNPADATPGTATATIISANQGASHSNLVLQAYQ
TAVATYSLIYPNPNDINLRYAIDFSPTGLTSNQHAVGDAINAIQTAHVASFKSIAAAIFY
QPTVEQLGIVYNSLSGEGVAAVEQTAISGNEMFHTSILNQARFWLFDNERYDANSIAYYD
GAPLGYAADRRNTFPSYTKAANPVAPPSHTWRLWTNFNGGNWRYSGNPNTGSADSASISS
GVTSGLDYQINSSWMMGLAVGYGKAWVRVSDRATTATVEGTHVAAYTATRGTNAYAIASL
GFDYFTNREDRSAVISGTVLPPLFGTPIPSVAGFSERLSADFKSYSISGLFETGYKYRFG
PYNVTPLAGLNFTSLWMNGFTESNNGAPSVIGLSFANRNVSAVPAYLGVQLDGKQEFTNG
GSLYGWVRAAWVHDFLPHRTVNPSFISAPGFGFVVEGAQAPSDLARISAGGKIGLDSNVS
VSFDLRADLYRTPSYSGWTGVHIAW
NT seq
9798 nt
NT seq
+upstream
nt +downstream
nt
gtgacgaatagcggttccggctcgatttcgacgaacggaaacactgcgcacggcatctat
gtgctgagcgtcggcggacacggcggaacgggcggcgatgtcgatgtcagtctgggtggc
ggcggcggcaccggcggcaatggtggcagtccgggaaatgtcctggtcgacaatcgcctc
gatattaccacgaatggcgccggatcggccggcatctgggcgcagacgatcggcggtcga
ggtggtgacggtggtgctgcccaagcctgtattttctgctccggcggacgcggcgcatcg
gcgggtgtcggcggctcggtcaatgtcgtcaacaacagtgccattcgcacgatgttggac
aactctttcggcattttcgcgcaatcgatcggcggttattcgggcaacggtggcgggtct
tatggcctcttgtcctttgctggcgacgcatcgagcggcggtaatggcggaaccgtcgat
gtgcggactgatggtggctccatccatacgtcgggtgtcggctcgacggctatcttcgca
cagagtggcggtggcggcggcggcgctggtggaacgggggccggtttgatcggtttcggc
ggcggcggaggaacggctgggaccggcgaggcggtaacagtcgtcaatcgcgcaacgttg
accgtggacggcaatctctccagcggcatctttgcgcagtcatatggcggcggcggcggc
acggctggtgtcggtgcgggattggtcggcatcggcggcagcggcggcggcggcggtgct
ggcggcgatgtgcgcgtggagaattatgcgcagatcaatgtgggtggttctggcgcgtta
ggctccggaagcgctgcaggtatctatgcgcaatcggtcggtggtggcggtggcagcggc
ggtctcggtgccgggcttgtcggcgtgggcggcagcggtggcggggccggcaatggcggc
gctgtcaccgtgatcaatggtggcgatatcctccacgcggtttgcgccaactgcgtgcag
gctccgaccatcttcgcgcagtcggtgggcggtggcggcggcgacggcggatcgtcgggg
gggctgattgccgtcggtggtcgcggtggtgcaggtggcgacggcggcaaggttgcggtc
actaacaatggcaatctgactgcttatggcgattactcctccggccttttcgcccagtcg
gttggcggcggcggcggcaatggcggctcctcttacggcatcggcgtcttcgccagtgtc
gcggtcggtggtacgggtggcgcgggcggtaacggtggtcaagtctgcgtcaatgcgaat
gcgggctgcgacgggatcgatccggcccttgcagctaagacgattatgacgcagggcttc
aagtccgctggcatcttcgcgcaatcggttggtggaggcggtggcaatggcggcgccgcg
atctctgtctcggcggccatcttcggcggcgcctcggtcggtgtcggcggcgacggttcg
aatggcggcatcgcaaaagatgtcttcgtgggctcggccggctccatcagcaccgcgggc
gcctattcagccggtattctggctgaatcggtcggtggcggcggtggcagtggcggttat
gccatttcagtatctgcaggaccggcctatggcgcgctcgctttctcgctggggggctcc
ggcggcgccggcaacattgccggcaatgtgaccgtcgatagcaggagcaacatcacgacc
aatggcgtgttctcggccggcatccaggcgagcgcgatcggcggcggtggcggcgacggc
ggtttcagtatttcgacggcggctgctttagctggcctgtcgctcggaatcggtggcggc
tcgggcggcggtgccgatggcggcgtggtcaatgtcacgagcatcggcaatatcacgact
ggtacgcaggctggcggcggactcgccagcgcgaattcggccggtattttcgctcagtcg
atcggtggctccggcggtactggcggctttgccatcgcggccagcggcggcgtctatggc
aatgtcagtgttggcgttggtggcgatggtggcaaaggcggcaacggtctggcagtcacg
gtccacaacaacgacaatgcgagcaccaacaacaaagtcacgacctggggtgatttgtcc
gacggcatcttcgcgcagtcgatcggtggatcgggcggcaatggcggattttccgtcgcc
gccggcggcgctctctatggctcggtcaatctgagcttcggtggcgcgggcaatggcggc
ggcaatggcggcgttgtcgatgtgaccagctatggtgcgatcgaaacgcacggtgcgaaa
gcgaacggcattttcgcgcagtcggtgggcggcggcggcggcaatggcggtttctcggcc
gcggcgggtggtgcgcaatatggcgctgtctcgctatccctaggcggtgcgggcgcgcaa
ggcggagacggcaacaatgtcaccgtgcggaacaatggcgccattcagaccggcggcctg
caatcgaacggcatattggcgcaatcggtgggcggcggcggcggcaatggcggcctcgca
ttggggctgggtggttccgaatacgcatcgctggcgctggcattcggaggcacgggcgcc
aatggtggtatcggtcaggccgtgcgcgtggattccgcgggagccatcgccacaggctcc
gatcagtcgaatggcattcttgcgcagtcgatcggcggcgccggcggcaatgggggcgct
gcggtcgccggcacgctgaccatcgacagtggtatcggcgtgtcgatggctgttggcggc
aaggccggcgacggcgccaaaggtggcgatgtccatgtcggtaccacagccgatgtgacc
acggccggcctgggctctaatggcattcttgcgcagtcgatcggcggctcgggtggcaat
ggcggtttgtccggtgcaatcagcgtctccgcagcgggcggcgcggcgttcaccggctcg
accggaggcaatgcaggcatcggcaacacggccggcaaagtcgaggtcatcaccaacaac
aatatcaccactaccggcggatcgaatgcgaacggcatctacgcacaatcggttggcggc
ggcggcggcaatggcggcttctcgctgctgcttgcagcaagctatgatggaacatccggc
ccaacaccgaagactgttggcggcgctggcggcgtcggtggcaccggcaatgtcgtcaat
gtgcaatcgaccggcacggtcgagacacgcggatcggtctctaacggcatttttgcgcaa
tccgtcggcggtggcggtggtcgcggcggcttctcgatcggagctagcctttcctatggc
ggtgcgaccgaggtgaacagcgtgggaggcgctggtggcacgggcaatacggcagcgcag
gtgagcgtcgttgctgcagcttctgcctcgtcgtcgatcgccaatacgtcggtcaagaca
caaggcgatggctcggtcggcattctcgctcaatcgatcggtggcggtggcggccagggc
ggcttctccatcgcaggaagtttcaatgccggtggcaatgccaacgccaattcggttggt
ggttcgggcgggaccggtggcgattcactgaacggctgtaccgccggcggcctcaactgc
cagcttggcgatgccggctatgtcgcggccgtgcaggtcaccaacaccggcaatatacgg
acagccggccgcaatgcgtcgggcatccaggcgcagtctatcggcggcggtggcggcgac
ggaggtttctcgatcggtgtgtcgggcaccgtttcggacagcacggcaaaactgcagacg
gtgggcggctcaggcggcgcagccggtaagggctctgacgtcatcgtgctcaacaacgcg
ttcgcaaatgcgacgaatgccatcacgacggcgcaagatctatcttatggcatcctggcg
caatctgtcggcggcggcggcggcaatggcggctttgcgatttccggctctctctcgacc
ggtggtggcgcggaagccaatgcgaccggcggccagggatcgggcggtggcaatgcgggg
cgcgtgactgtcacgagcggaggcggcatcttcaccggcacgccgattctcgccggtagc
gtggtcgtcggtgcgaccggtggtcagggctctatcggcattcttgcacagtccatcggc
ggcggcggcggcagcggtggcttcgcgggtggtctttcgctcggcataggcggagatgcc
gcgaccaacaccacgggcggcaatggatcggttggtggggatggcggcatcgtcacggtc
aatacgctggcgggcgccgtgatccagactttcggtgacaatgctacgggcatcctggcg
cagtcggtcggcggcggtggcggcaatggtggtttctccatcggtgccagcttcaacaat
tccgacggcaagagtgcggccaatactattggtggtcggggcggcgccggaggtgccggt
ctggcggtcaccgtcaataaccaggcttcgatccagaccttcggtctggcgtcggacggc
atcattgcgcaatccatcggcggcggcggcggcaatggcggttttgccatcagtggatcg
gtgtcgctcggcggtgatgcgaccaataatacgattggtggctccggcggcggcggcggc
aatgccggcaccgtggatgtcgtcaatagcggtgccattcaggtcgcacgtgccggtacg
atcggcattctcgcccagtcggtgggtggtggcggcggcaatggcggcttctcgggcggc
gtcgccttcacgaatagcggcgacgcaaagaacacggtcggtggtactggcactggcgtc
ggtggtctcgctgggaatgccgacaaggtgaccgtgaccaatagcggtgccattacggct
ggcggcgataagggcatcggcatcatggcgcagtcggtggggggcggcggcggcaatggc
ggcttcgcgatcaccgccggtggctcgacatctgccgcatctgtctcggattcggtcggc
ggctccggcggtgccggtggcaccggcgggcaagtcgtggtggtcaacaacactggcggt
acgctcacgaccaacggcgccatggcctatggcattgtcgcgcaatcggtgggcggcggc
ggcggcaatggcggtttctcgaccaatgccaacttctcgctcggcggcgatgccacatcg
aaggtcggcggcggtgcgggcggcggaggcggatcgtcgagcacggtcaatgtcgacaac
tatgatgtcgtccacaccaagggtgtgcagagcacgggcatcctggcgcaatccatcggc
ggtggcggaggctccggcggctttgcaggtgcattgaccttctcaagcggcggttcggtc
aataatcaggtcggcggtggcagcggtggcaccggcagctcggccgacagcgtgacggtg
ttcaaccacgcgggcgcggcgatcgtgaccgatttgaacaactctgtcggcatccttgcc
caggcgatcggcggcggtggcggatcgggtgccttcacattgtcgggtgcggtgacgacc
aatggcgatggctattcacagtcggttggtggcaatggcggtgcgggtggctcggcggcg
ttcaacgccgcgaatgtcgcgatcctcgtcagtgttcagaacgacggcatcgtcaccacc
aagggcaggaatagcatcggtatcctggcgcaatcgatcggcggcggtggcggcaatgcg
ggtgtaacggtctccggtgcctattcgagctcgggtggcgcatcgaccacggtcggtgcc
accggtggcggcggcggcgatgccggcgcggtcaaggtcatcaataacggcaccatcaat
gtccagggtgcgaactccatcggcatctatgcgcaatcggtgggtggtggcggcggcaac
gccggcttcaccggcaacctgaacttcaccgacagcaccaagaaacaggagaccaaggtc
ggttcgcagctcggcgctgcgggcggcaatggtggcgacgtcacggttatctcgaccggt
tcgatcaataccaccggcacgaattcgattgctgtctttgcgcaatcgatcggcggcggc
ggcggcaacaatgcgctcgccatcgacgcgcagaccggttctgtcagcacatcttcgatc
gatatcggcagtttcttcacatcggcgccgtcgggttcgaaggggaacgtcatcgtcgat
ctcagcggcggcacggtgtcatcctcgggcgatctcgcttacggtattcttgcgcaggca
atcggcgccggcggtggcaatggcgcggtggtggtgccggatccactcaccgtcggtgcc
ggcggtttgaccatcggcctgggttcgctgggcgcgatcggcgacggcagcccgttgacg
gcgaccaatgccaacgccatcacaacgaccggtgtcggcgcggccggctatatcggccaa
tcgatcggtggcggcggcggcatgggctccgccacaggtgatctgaccttcaccgcgaca
ggcccgttgacgctcacgttgggcggctcggccggcagcggttcgggtggaacgacgcga
gtcaccaatacggcggcatcgattacgacgggcaatggacctgctattgccagcggcgac
ggcgcggtcgcgttgatcgctcaatcgatcggtggcggcggcggcggttcgatcggcgcc
ttcggcgtcgtcaccggcacagccgggcccgttcaaatcacgctcggcggcgcggaaacc
ggaaccaataatggcggtgaactcgcgctcaagagcggcaatctgattacgacctatggc
cgctttgctgccggtctcgtcggtcagacgattggcggcggcggcggctatggatcggtc
actgctgcagaaggtatctcggctgcaggcgttcaattccaactcggctccacaggcggg
accggcggtgcggccgatccgtctcaactatcgaacgtcgtgatcggtgctggaacaatc
accaccaatggcaagatttcggacggtgtcgtcgcgcaggccatcggcggcggcggcggt
cttgccggctttgtcagcgacggtggccaattgccgccgctcgcatccagtacgctcggt
gcattggccggtggcggcgacggcgcgacgatcaatgtgagcaatgccagtgcgattgtc
acaaaagcgtccggctcgatcggcgccatcgtgcagtcgatcggcggcggtggcggcacg
gcgcaggcttatggcgtatccaacagtgccgcggcagtgacgcttggcgctgcggccgga
gctggcggggcagccggcagcgtcaatttccagacctccggaggcgtcacgacgaacggc
gtcaatgcgcatggcatcgtcgcgcaatcgatcggcggcggcggcggcctgttccaggcc
ttcgacaacgcaggaaacgcagtggtaccgacggttgtcggatcgccagcctcgagcggc
aatggcggcgcggtcaatgtgaaggtcgatgctggcgccgatatccgaaccaccggagac
ggcgcctacggcatcatcgcacaatcgatcggcggtgggggtggtctcgttggtggcggc
gccttcgtcaacacattggggcaggcaggacctttcgccggcagtgcaggcggcgccggc
gtcgccggcactgtcgctgtcaatgttcaatcgaatgtcgtggtgaccggcacgggctcg
acagcgatctacggacaatccaccggtgcagcagggggcggcgccaatatcgacgtcacc
ctcggcaatgccacgctcggcaccaaccagctggtgatcggcggcgccaacggtgcgacc
acgaccaatgcggtgcgatttgccggcggtgctgccaacacgctgaccacttacgcttcg
ctggcgaccatggctggcatcaacggcacagctgtcacgggcggcatcggcaatgaagcc
atcaccagttacggacatatcgtcgggtcgattgatctcggcagtggaaccaacacgctc
aacaacaaggcctacaacaacaatccctcattgtttgccggtgtgttcgacgccggcccg
accatcaacctcaatggccccgcagccggcaatgtcatgaccaatgacggactgttctca
cccggcgcgttgtcgcgggtcatgaccaccaatctgaatggcaatttcgtgcaaagcgca
tccggttcttgcggcacgttcggccaagccaccagtacttgcggttactatgcggtggat
ctggatttgaagagcctaacggccgatcggctgaatgtgacgggaactgccaatgtctct
ggcgcggtggtcgtcaatatcggcaatcccgccgatgccacccctggcacagccacggcg
acgatcatctcggcgaaccagggtgcatcgcattctaatcttgtcctgcaagcctatcaa
accgcagtggcgacctattcgctaatttatcctaacccgaacgacatcaatctgagatat
gcgatcgatttctcaccaaccggcctgacgtcgaaccagcacgcagtgggcgacgcgatc
aacgcgattcagaccgcacatgtggcatcgttcaaatccatcgctgcggcgattttctac
cagccgaccgtcgaacagctgggtatcgtgtataattcgctttcgggcgaaggcgttgcc
gccgtcgaacagaccgcgatctccgggaacgagatgttccatacctcgatcctgaaccag
gcacggttctggctcttcgacaatgaacggtatgacgccaacagcatcgcttactatgac
ggcgccccgctgggttatgcagctgatcgccgcaatacattcccgagctacacaaaggcg
gcgaatcccgtagccccgccctcgcacacctggcggctctggaccaatttcaatggcggt
aattggcgttattccggcaacccgaataccgggtcagcggatagcgcgtccatcagcagc
ggtgtgaccagcggcctggactatcagatcaacagcagctggatgatgggtcttgccgtc
ggatacggaaaggcatgggtcagggtttcggatcgcgcgacgacggcaaccgtggaaggg
acgcacgtggcagcctacaccgcgacgcggggcacgaatgcgtatgccatagcttcgcta
gggtttgactatttcaccaatcgcgaggaccgcagtgccgtcatctccggcactgtcttg
ccgcccttgttcggaaccccgatcccgtcggttgccggcttctcggagcggctgtcggcg
gatttcaagagctattccatcagtggcctgttcgaaactggatacaaatatcggttcggc
ccctacaatgtgacgccgctggcgggtctgaatttcacgtcgctctggatgaatggcttc
accgaaagcaacaacggcgcaccgagtgtcatcgggctttcctttgccaatcgtaacgtc
agcgccgttcccgcctatctcggtgtgcaactcgacggcaagcaggaattcaccaatggt
ggctcgctttatggctgggttcgcgccgcatgggtccatgacttcctgccccatcgaacc
gtcaacccatctttcatctcggcgccgggcttcggattcgtggtcgaaggtgcccaggct
ccgagcgatctggcgcgtatcagtgctggtggcaagattggtctggatagcaatgtttcg
gtgtcgtttgaccttcgtgcggacctgtatcgtacccccagctattctggctggaccggc
gttcatattgcgtggtga
DBGET
integrated database retrieval system
