LOCUS       sequence-304107-        9082 bp    DNA     circular SYN 15-DEC-2025
DEFINITION  Mammalian expression of cell-surface protein extracellular domain 
            fused to COMP5AP-AviTag-9xHis. Protein is secreted from cells..
ACCESSION   .
VERSION     .
KEYWORDS    .
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 9082)
  AUTHORS   Wojtowicz WM, Vielmetter J, Fernandes RA, Siepe DH, Eastman CL, 
            Chisholm GB, Cox S, Klock H, Anderson PW, Rue SM, Miller JJ, Glaser 
            SM, Bragstad ML, Vance J, Lam AW, Lesley SA, Zinn K, Garcia KC
  TITLE     A Human IgSF Cell-Surface Interactome Reveals a Complex Network of 
            Protein-Protein Interactions.
  JOURNAL   Cell. 2020 Aug 20;182(4):1027-1043.e17. doi: 
            10.1016/j.cell.2020.07.025.
  PUBMED    32822567
REFERENCE   2  (bases 1 to 9082)
  AUTHORS   .
  TITLE     Direct Submission
  JOURNAL   Exported Dec 15, 2025 from SnapGene Server 8.0.1
            https://www.snapgene.com
COMMENT     SGRef: number: 1; type: "Journal Article"; doi: 
            "10.1016/j.cell.2020.07"; journalName: "Cell"; date: "2020-08-20- 
            20"; volume: "182"; issue: "4"; pages: "1027-1043.e17"
COMMENT     Sequence Label: pD649-HAsp-SEMA4C-COMP5AP-AviTag-9xHis
FEATURES             Location/Qualifiers
     source          1..9082
                     /mol_type="other DNA"
                     /organism="synthetic DNA construct"
     primer_bind     124..143
                     /label=Kan-R
                     /note="Kanamycin resistance gene, reverse primer"
     primer_bind     149..168
                     /label=pENTR-R
                     /note="pENTR vectors, reverse primer"
     rep_origin      254..842
                     /direction=RIGHT
                     /label=ori
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
                     replication"
     primer_bind     743..762
                     /label=pBR322ori-F
                     /note="pBR322 origin, forward primer"
     primer_bind     996..1013
                     /label=L4440
                     /note="L4440 vector, forward primer"
     primer_bind     1111..1128
                     /label=M13 Forward
                     /note="In lacZ gene. Also called M13-F20 or M13 (-21) 
                     Forward"
     primer_bind     1112..1128
                     /label=M13 fwd
                     /note="common sequencing primer, one of multiple similar 
                     variants"
     protein_bind    1584..1600
                     /label=lac operator
                     /bound_moiety="lac repressor encoded by lacI"
                     /note="The lac repressor binds to the lac operator to 
                     inhibit transcription in E. coli. This inhibition can be 
                     relieved by adding lactose or 
                     isopropyl-beta-D-thiogalactopyranoside (IPTG)."
     enhancer        1767..2146
                     /label=CMV enhancer
                     /note="human cytomegalovirus immediate early enhancer"
     promoter        2147..2350
                     /label=CMV promoter
                     /note="human cytomegalovirus (CMV) immediate early 
                     promoter"
     primer_bind     2301..2321
                     /label=CMV-F
                     /note="Human CMV immediate early promoter, forward primer"
     primer_bind     2347..2371
                     /label=LNCX
                     /note="Human CMV promoter, forward primer"
     promoter        2581..2599
                     /label=SP6 promoter
                     /note="promoter for bacteriophage SP6 RNA polymerase"
     primer_bind     2581..2598
                     /label=SP6
                     /note="SP6 promoter, forward primer"
     primer_bind     2612..2631
                     /label=pMT2-F
                     /note="Synthetic intron, forward primer"
     CDS             4687..4722
                     /codon_start=1
                     /product="epitope tag derived from human Protein C (Stearns
                     et al., 1988)"
                     /label=Protein C tag
                     /translation="EDQVDPRLIDGK"
     CDS             4732..4755
                     /codon_start=1
                     /product="recognition and cleavage site for human 
                     rhinovirus 3C and PreScission proteases"
                     /label=HRV 3C site
                     /translation="LEVLFQGP"
     CDS             6415..6459
                     /codon_start=1
                     /product="peptide tag that allows for enzymatic 
                     biotinylation"
                     /label=AviTag(TM)
                     /translation="GLNDIFEAQKIEWHE"
     CDS             6460..6486
                     /codon_start=1
                     /product="9xHis affinity tag"
                     /label=9xHis
                     /translation="HHHHHHHHH"
     primer_bind     complement(6626..6643)
                     /label=BGH-rev
                     /note="Bovine growth hormone terminator, reverse primer. 
                     Also called BGH reverse"
     polyA_signal    6632..6743
                     /label=bGH poly(A) signal
                     /note="bovine growth hormone polyadenylation signal"
     primer_bind     complement(6861..6881)
                     /label=pBABE 3'
                     /note="SV40 enhancer, reverse primer for pBABE vectors"
     promoter        6866..7195
                     /label=SV40 promoter
                     /note="SV40 enhancer and early promoter"
     rep_origin      7046..7181
                     /label=SV40 ori
                     /note="SV40 origin of replication"
     primer_bind     7108..7127
                     /label=SV40pro-F
                     /note="SV40 promoter/origin, forward primer"
     promoter        7243..7290
                     /label=EM7 promoter
                     /note="synthetic bacterial promoter "
     CDS             7309..7908
                     /codon_start=1
                     /gene="pac from Streptomyces alboniger"
                     /product="puromycin N-acetyltransferase"
                     /label=PuroR
                     /note="confers resistance to puromycin"
                     /translation="MTEYKPTVRLATRDDVPRAVRTLAAAFADYPATRHTVDPDRHIER
                     VTELQELFLTRVGLDIGKVWVADDGAAVAVWTTPESVEAGAVFAEIGPRMAELSGSRLA
                     AQQQMEGLLAPHRPKEPAWFLATVGVSPDHQGKGLGSAVVLPGVEAAERAGVPAFLETS
                     APRNLPFYERLGFTVTADVEVPEGPRTWCMTRKPGA"
     primer_bind     complement(7309..7328)
                     /label=Puro-R
                     /note="Puromycin resistance gene, reverse primer. Also 
                     called puro-variant-R"
     primer_bind     7805..7825
                     /label=Puro-F
                     /note="Puromycin resistance gene, forward primer"
     polyA_signal    8038..8159
                     /label=SV40 poly(A) signal
                     /note="SV40 polyadenylation signal"
     primer_bind     complement(8075..8094)
                     /label=SV40pA-R
                     /note="SV40 polyA, reverse primer"
     primer_bind     8129..8148
                     /label=EBV-rev
                     /note="SV40 polyA terminator, reverse primer"
     CDS             complement(join(8212..9003,9004..9072))
                     /codon_start=1
                     /gene="bla"
                     /product="beta-lactamase"
                     /label=AmpR
                     /note="confers resistance to ampicillin, carbenicillin, and
                     related antibiotics"
                     /translation="MSIQHFRVALIPFFAAFCLPVFAHPETLVKVKDAEDQLGARVGYI
                     ELDLNSGKILESFRPEERFPMMSTFKVLLCGAVLSRIDAGQEQLGRRIHYSQNDLVEYS
                     PVTEKHLTDGMTVRELCSAAITMSDNTAANLLLTTIGGPKELTAFLHNMGDHVTRLDRW
                     EPELNEAIPNDERDTTMPVAMATTLRKLLTGELLTLASRQQLIDWMEADKVAGPLLRSA
                     LPAGWFIADKSGAGERGSRGIIAALGPDGKPSRIVVIYTTGSQATMDERNRQIAEIGAS
                     LIKHW"
     primer_bind     8835..8854
                     /label=Amp-R
                     /note="Ampicillin resistance gene, reverse primer"
     promoter        complement(join(9073..9082,1..82))
                     /gene="bla"
                     /label=AmpR promoter
ORIGIN
        1 tttcaatatt attgaagcat ttatcagggt tattgtctca tgagcggata catatttgaa
       61 tgtatttaga aaaataaaca aataggggtc agtgttacaa ccaattaacc aattctgaac
      121 attatcgcga gcccatttat acctgaatat ggctcataac accccttgct catgaccaaa
      181 atcccttaac gtgagttacg cgcgcgtcgt tccactgagc gtcagacccc gtagaaaaga
      241 tcaaaggatc ttcttgagat cctttttttc tgcgcgtaat ctgctgcttg caaacaaaaa
      301 aaccaccgct accagcggtg gtttgtttgc cggatcaaga gctaccaact ctttttccga
      361 aggtaactgg cttcagcaga gcgcagatac caaatactgt tcttctagtg tagccgtagt
      421 tagcccacca cttcaagaac tctgtagcac cgcctacata cctcgctctg ctaatcctgt
      481 taccagtggc tgctgccagt ggcgataagt cgtgtcttac cgggttggac tcaagacgat
      541 agttaccgga taaggcgcag cggtcgggct gaacgggggg ttcgtgcaca cagcccagct
      601 tggagcgaac gacctacacc gaactgagat acctacagcg tgagctatga gaaagcgcca
      661 cgcttcccga agggagaaag gcggacaggt atccggtaag cggcagggtc ggaacaggag
      721 agcgcacgag ggagcttcca gggggaaacg cctggtatct ttatagtcct gtcgggtttc
      781 gccacctctg acttgagcgt cgatttttgt gatgctcgtc aggggggcgg agcctatgga
      841 aaaacgccag caacgcggcc tttttacggt tcctggcctt ttgctggcct tttgctcaca
      901 tgttctttcc tgcgttatcc cctgattctg tggataaccg tattaccgcc tttgagtgag
      961 ctgataccgc tcgccgcagc cgaacgaccg agcgcagcga gtcagtgagc gaggaagcgg
     1021 aaggcgagag tagggaactg ccaggcatca aactaagcag aaggcccctg acggatggcc
     1081 tttttgcgtt tctacaaact ctttctgtgt tgtaaaacga cggccagtct taagctcggg
     1141 ccccctgggc ggttctgata acgagtaatc gttaatccgc aaataacgta aaaacccgct
     1201 tcggcgggtt tttttatggg gggagtttag ggaaagagca tttgtcagaa tatttaaggg
     1261 cgcctgtcac tttgcttgat atatgagaat tatttaacct tataaatgag aaaaaagcaa
     1321 cgcactttaa ataagatacg ttgctttttc gattgatgaa cacctataat taaactattc
     1381 atctattatt tatgattttt tgtatataca atatttctag tttgttaaag agaattaaga
     1441 aaataaatct cgaaaataat aaagggaaaa tcagtttttg atatcaaaat tatacatgtc
     1501 aacgataata caaaatataa tacaaactat aagatgttat cagtatttat tatcatttag
     1561 aataaatttt gtgtcgccct taattgtgag cggataacaa ttacgagctt catgcacagt
     1621 ggcgttgact caatattggc cattagccat attattcatt ggttatatag cataaatcaa
     1681 tattggctat tggccattgc atacgttgta tctatatcat aatatgtaca tttatattgg
     1741 ctcatgtcca atatgaccgc catgttggca ttgattattg actagttatt aatagtaatc
     1801 aattacgggg tcattagttc atagcccata tatggagttc cgcgttacat aacttacggt
     1861 aaatggcccg cctggctgac cgcccaacga cccccgccca ttgacgtcaa taatgacgta
     1921 tgttcccata gtaacgccaa tagggacttt ccattgacgt caatgggtgg agtatttacg
     1981 gtaaactgcc cacttggcag tacatcaagt gtatcatatg ccaagtacgc cccctattga
     2041 cgtcaatgac ggtaaatggc ccgcctggca ttatgcccag tacatgacct tatgggactt
     2101 tcctacttgg cagtacatct acgtattagt catcgctatt accatggtga tgcggttttg
     2161 gcagtacatc aatgggcgtg gatagcggtt tgactcacgg ggatttccaa gtctccaccc
     2221 cattgacgtc aatgggagtt tgttttggca ccaaaatcaa cgggactttc caaaatgtcg
     2281 taacaactcc gccccattga cgcaaatggg cggtaggcgt gtacggtggg aggtctatat
     2341 aagcagagct cgtttagtga accgtcagat cgcctggaga cgccatccac gctgttttga
     2401 cctccataga agacaccggg accgatccag cctccgcggc cgggaacggt gcattggaac
     2461 gcggattccc cgtgccaaga gtgacgtaag taccgcctat agagtctata ggcccacccc
     2521 cttggcttcg ttagaacgcg gctacaatta atacataacc ttatgtatca tacacatacg
     2581 atttaggtga cactatagaa taacatccac tttgcctttc tctccacagg tgtccactcc
     2641 caggtccaac tgcacctcgg ttctatcgaa aacgcgcctg ctagcgccac catgaagacc
     2701 atcattgccc tgagctacat cttctgcctg gtgttcgctg cggccgccgc tgaagtttgg
     2761 tggaatctgg tgcccagaaa gaccgtgtct agcggcgaac tggccacagt cgtgcggaga
     2821 ttttcccaga ccggcatcca ggactttctg accctgacac tgaccgagcc taccggcctg
     2881 ctgtatgtgg gagctagaga agccctgttc gccttcagca tggaagccct ggaactgcag
     2941 ggcgccatct cttgggaagc ccctgtggaa aagaaaaccg agtgcatcca gaagggcaag
     3001 aacaaccaga ccgagtgctt caacttcatc cggtttctgc agccctacaa cgccagccac
     3061 ctgtacgtgt gtggcaccta cgccttccag cctaagtgca cctacgtgaa catgctgacc
     3121 ttcacactgg aacacggcga gttcgaggac ggcaagggca agtgtcctta cgatcctgcc
     3181 aaaggccatg ccggactgct ggttgatggc gagctgtact ctgctaccct gaacaacttc
     3241 ctgggcaccg agccaatcat cctgcggaat atgggccctc accacagcat gaagaccgag
     3301 tacctggcct tctggctgaa cgagcctcac tttgtgggca gcgcctatgt gcctgagagc
     3361 gtgggatctt tcaccggcga cgacgacaag gtgtacttct tcttccgcga acgcgccgtg
     3421 gaaagcgact gttatgctga acaggtggtg gccagagtgg ctagagtgtg caagggcgat
     3481 atgggcggag ccagaacact gcagagaaag tggaccacct tcctgaaggc cagactggct
     3541 tgcagcgccc ctaattggca gctgtatttc aaccagctgc aggccatgca caccctgcag
     3601 gataccagct ggcacaacac cacctttttc ggagtgtttc aggcccagtg gggcgacatg
     3661 tacctgtctg ccatctgcga gtatcagctg gaagagatcc agcgggtgtt cgagggcccc
     3721 tacaaagagt atcacgaaga ggcccagaag tgggacagat acacagaccc cgtgccttct
     3781 ccaagacctg gcagctgcat caacaactgg cacagacggc acggctacac ctctagcctg
     3841 gaactccccg acaacatcct gaacttcgtg aagaaacacc ctctgatgga agaacaagtc
     3901 ggccccagat ggtccagacc tctgctggtt aagaagggca ccaacttcac ccacctggtg
     3961 gccgatagag tgacaggact ggatggcgcc acctacaccg tgctgtttat cggaacaggc
     4021 gacggctggc tgctcaaggc tgtttctctt ggaccttggg tgcacctgat cgaagaactg
     4081 caactgttcg accaagagcc tatgcggagc ctggtgctga gccagtctaa gaagctgctg
     4141 tttgccggca gcagatccca gctggttcag ctgcctgtgg ccgactgcat gaagtacaga
     4201 tcctgcgccg attgcgtgct ggccagagat ccttactgtg cttggagcgt gaacaccagc
     4261 agatgtgtgg ccgttggcgg acacagtgga agcctgctga ttcagcacgt gatgaccagc
     4321 gacaccagcg gcatctgcaa tctgcggggc tctaagaaag tgcggcccac acctaagaac
     4381 atcacagtgg tggccggcac cgatctggtg ctgccttgtc acctgagcag caatctggcc
     4441 cacgccagat ggacattcgg cggcagagat ctgccagctg agcagcctgg ctccttcctg
     4501 tatgatgctc gactgcaggc cctggtggtt atggctgcac agcctagaca tgccggcgct
     4561 taccactgct tcagcgagga acaaggcgct agactggccg ccgaaggata tctggtggct
     4621 gtggttgctg gccctagcgt gacactggaa gctagagcac ccctggaaaa cctcggaggc
     4681 gcgccggaag atcaagttga tccaagattg attgatggca agggcggatc tctggaggtg
     4741 ctgttccagg gaccaggcgg aagcggcaat cccggcggcg atctggcccc ccagatgctg
     4801 cgcgagctgc aggagaccaa tgccgccctg caggacgtgc gcgagctgct gcgccaccgc
     4861 gtgaaggaga tcaccttcct gaagaacacc gtgatggagt gcgacgcctg cggtatgcag
     4921 ccctctagag gctccggctc catcatccca gttgaggagg agaacccgga cttctggaac
     4981 cgcgaggcag ccgaggccct gggtgccgcc aagaagctgc agcctgcaca gacagccgcc
     5041 aagaacctca tcatcttcct gggcgatggg atgggggtgt ctacggtgac agctgccagg
     5101 atcctaaaag ggcagaagaa ggacaaactg gggcctgaga tacccctggc catggaccgc
     5161 ttcccatatg tggctctgtc caagacatac aatgtagaca aacatgtgcc agacagtgga
     5221 gccacagcca cggcctacct gtgcggggtc aagggcaact tccagaccat tggcttgagt
     5281 gcagccgccc gctttaacca gtgcaacacg acacgcggca acgaggtcat ctccgtgatg
     5341 aatcgggcca agaaagcagg gaagtcagtg ggagtggtaa ccaccacacg agtgcagcac
     5401 gcctcgccag ccggcaccta cgcccacacg gtgaaccgca actggtactc ggacgccgac
     5461 gtgcctgcct cggcccgcca ggaggggtgc caggacatcg ctacgcagct catctccaac
     5521 atggacattg acgtgatcct aggtggaggc cgaaagtaca tgtttcgcat gggaacccca
     5581 gaccctgagt acccagatga ctacagccaa ggtgggacca ggctggacgg gaagaatctg
     5641 gtgcaggaat ggctggcgaa gcgccagggt gcccggtatg tgtggaaccg cactgagctc
     5701 atgcaggctt ccctggaccc gtctgtgacc catctcatgg gtctctttga gcctggagac
     5761 atgaaatacg agatccaccg agactccaca ctggacccct ccctgatgga gatgacagag
     5821 gctgccctgc gcctgctgag caggaacccc cgcggcttct tcctcttcgt ggagggtggt
     5881 cgcatcgacc atggtcatca tgaaagcagg gcttaccggg cactgactga gacgatcatg
     5941 ttcgacgacg ccattgagag ggcgggccag ctcaccagcg aggaggacac gctgagcctc
     6001 gtcactgccg accactccca cgtcttctcc ttcggaggct accccctgcg agggagctcc
     6061 atcttcgggc tggcccctgg caaggcccgg gacaggaagg cctacacggt cctcctatac
     6121 ggaaacggtc caggctatgt gctcaaggac ggcgcccggc cggatgttac cgagagcgag
     6181 agcgggagcc ccgagtatcg gcagcagtca gcagtgcccc tggacgaaga gacccacgca
     6241 ggcgaggacg tggcggtgtt cgcgcgcggc ccgcaggcgc acctggttca cggcgtgcag
     6301 gagcagacct tcatagcgca cgtcatggcc ttcgccgcct gcctggagcc ctacaccgcc
     6361 tgcgacctgg cgccccccgc cggcaccacc gacgccgcgc acccgggtgg cggaggactg
     6421 aacgacatct tcgaggctca gaaaatcgaa tggcacgaac atcaccatca ccatcaccat
     6481 caccattaag gccggcctgt agtcactggc acaacgcgtt acccggtaag ccaatcgggt
     6541 atacacggtc gtcatactgc agacagggtt cttctacttt gcaagatagt cttgagtagt
     6601 aaaataaata gatagagaaa atcagcctcg actgtgcctt ctagttgcca gccatctgtt
     6661 gtttgcccct cccccgtgcc ttccttgacc ctggaaggtg ccactcccac tgtcctttcc
     6721 taataaaatg aggaaattgc atcacaacac tcaaccctat ctcggtctat tcttttgatt
     6781 tataagggat tttgccgatt tcggcctatt ggttaaaaaa tgagctgatt taacaaaaat
     6841 ttaacgcgaa ttaattctgt ggaatgtgtg tcagttaggg tgtggaaagt ccccaggctc
     6901 cccagcaggc agaagtatgc aaagcatgca tctcaattag tcagcaacca ggtgtggaaa
     6961 gtccccaggc tccccagcag gcagaagtat gcaaagcatg catctcaatt agtcagcaac
     7021 catagtcccg cccctaactc cgcccatccc gcccctaact ccgcccagtt ccgcccattc
     7081 tccgccccat ggctgactaa ttttttttat ttatgcagag gccgaggccg cctctgcctc
     7141 tgagctattc cagaagtagt gaggaggctt ttttggaggc ctaggctttt gcaaaaagct
     7201 cccgggagct tgtatatcca ttttcggatc tgatcagcac gtgttgacaa ttaatcatcg
     7261 gcatagtata tcggcatagt ataatacgac aaggtgagga actaaaccat gaccgagtac
     7321 aagcccacgg tgcgcctcgc cacccgcgac gacgtcccca gggccgtacg caccctcgcc
     7381 gccgcgttcg ccgactaccc cgccacgcgc cacaccgtcg atccggaccg ccacatcgag
     7441 cgggtcaccg agctgcaaga actcttcctc acgcgcgtcg ggctcgacat cggcaaggtg
     7501 tgggtcgcgg acgacggcgc cgcggtggcg gtctggacca cgccggagag cgtcgaagcg
     7561 ggggcggtgt tcgccgagat cggcccgcgc atggccgagt tgagcggttc ccggctggcc
     7621 gcgcagcaac agatggaagg cctcctggcg ccgcaccggc ccaaggagcc cgcgtggttc
     7681 ctggccaccg tcggcgtctc gcccgaccac cagggcaagg gtctgggcag cgccgtcgtg
     7741 ctccccggag tggaggcggc cgagcgcgcc ggggtgcccg ccttcctgga gacatccgcg
     7801 ccccgcaacc tccccttcta cgagcggctc ggcttcaccg tcaccgccga cgtcgaggtg
     7861 cccgaaggac cgcgcacctg gtgcatgacc cgcaagcccg gtgcctgaca cgtgctacga
     7921 gatttcgatt ccaccgccgc cttctatgaa aggttgggct tcggaatcgt tttccgggac
     7981 gccggctgga tgatcctcca gcgcggggat ctcatgctgg agttcttcgc ccaccccaac
     8041 ttgtttattg cagcttataa tggttacaaa taaagcaata gcatcacaaa tttcacaaat
     8101 aaagcatttt tttcactgca ttctagttgt ggtttgtcca aactcatcaa tgtatcttat
     8161 catgtctgta taccgtcgac ctctagctag agcttggcgt aatcatggtc attaccaatg
     8221 cttaatcagt gaggcaccta tctcagcgat ctgtctattt cgttcatcca tagttgcctg
     8281 actccccgtc gtgtagataa ctacgatacg ggagggctta ccatctggcc ccagcgctgc
     8341 gatgataccg cgagaaccac gctcaccggc tccggattta tcagcaataa accagccagc
     8401 cggaagggcc gagcgcagaa gtggtcctgc aactttatcc gcctccatcc agtctattaa
     8461 ttgttgccgg gaagctagag taagtagttc gccagttaat agtttgcgca acgttgttgc
     8521 catcgctaca ggcatcgtgg tgtcacgctc gtcgtttggt atggcttcat tcagctccgg
     8581 ttcccaacga tcaaggcgag ttacatgatc ccccatgttg tgcaaaaaag cggttagctc
     8641 cttcggtcct ccgatcgttg tcagaagtaa gttggccgca gtgttatcac tcatggttat
     8701 ggcagcactg cataattctc ttactgtcat gccatccgta agatgctttt ctgtgactgg
     8761 tgagtactca accaagtcat tctgagaata gtgtatgcgg cgaccgagtt gctcttgccc
     8821 ggcgtcaata cgggataata ccgcgccaca tagcagaact ttaaaagtgc tcatcattgg
     8881 aaaacgttct tcggggcgaa aactctcaag gatcttaccg ctgttgagat ccagttcgat
     8941 gtaacccact cgtgcaccca actgatcttc agcatctttt actttcacca gcgtttctgg
     9001 gtgagcaaaa acaggaaggc aaaatgccgc aaaaaaggga ataagggcga cacggaaatg
     9061 ttgaatactc atattcttcc tt
//
