LOCUS       sequence-150659-        7600 bp    DNA     circular SYN 15-DEC-2025
DEFINITION  FPX biosensor, a new class of genetically encoded fluorescent 
            biosensor based on reversible exchange of the heterodimeric partners
            of green and red dimerization dependent fluorescent proteins 
            (ddFPs)..
ACCESSION   .
VERSION     .
KEYWORDS    .
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 7600)
  AUTHORS   Ding Y, Li J, Enterina JR, Shen Y, Zhang I, Tewson PH, Mo GC, Zhang 
            J, Quinn AM, Hughes TE, Maysinger D, Alford SC, Zhang Y, Campbell RE
  TITLE     Ratiometric biosensors based on dimerization-dependent fluorescent 
            protein exchange.
  JOURNAL   Nat Methods. 2015 Jan 26. doi: 10.1038/nmeth.3261.
  PUBMED    25622108
REFERENCE   2  (bases 1 to 7600)
  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"; journalName: "Nat 
            Methods. 2015 Jan 26. doi: 10.1038/nmeth.3261."
COMMENT     Sequence Label: single polypeptide FPX biosensor for caspase-3
FEATURES             Location/Qualifiers
     source          1..7600
                     /mol_type="other DNA"
                     /organism="synthetic DNA construct"
     primer_bind     complement(44..63)
                     /label=pRS-marker
                     /note="pRS vectors, use to sequence yeast selectable 
                     marker"
     enhancer        235..614
                     /label=CMV enhancer
                     /note="human cytomegalovirus immediate early enhancer"
     promoter        615..818
                     /label=CMV promoter
                     /note="human cytomegalovirus (CMV) immediate early 
                     promoter"
     primer_bind     769..789
                     /label=CMV-F
                     /note="Human CMV immediate early promoter, forward primer"
     primer_bind     863..882
                     /label=T7
                     /note="T7 promoter, forward primer"
     promoter        863..881
                     /label=T7 promoter
                     /note="promoter for bacteriophage T7 RNA polymerase"
     regulatory      917..926
                     /label=Kozak sequence
                     /note="vertebrate consensus sequence for strong initiation 
                     of translation (Kozak, 1987)"
                     /regulatory_class="other"
     promoter        complement(3152..3170)
                     /label=SP6 promoter
                     /note="promoter for bacteriophage SP6 RNA polymerase"
     primer_bind     complement(3153..3170)
                     /label=SP6
                     /note="SP6 promoter, forward primer"
     primer_bind     complement(3190..3207)
                     /label=BGH-rev
                     /note="Bovine growth hormone terminator, reverse primer. 
                     Also called BGH reverse"
     polyA_signal    3196..3420
                     /label=bGH poly(A) signal
                     /note="bovine growth hormone polyadenylation signal"
     rep_origin      3466..3894
                     /direction=RIGHT
                     /label=f1 ori
                     /note="f1 bacteriophage origin of replication; arrow 
                     indicates direction of (+) strand synthesis"
     primer_bind     complement(3553..3572)
                     /label=F1ori-R
                     /note="F1 origin, reverse primer"
     primer_bind     3763..3784
                     /label=F1ori-F
                     /note="F1 origin, forward primer"
     primer_bind     complement(3903..3923)
                     /label=pBABE 3'
                     /note="SV40 enhancer, reverse primer for pBABE vectors"
     promoter        3908..4238
                     /label=SV40 promoter
                     /note="SV40 enhancer and early promoter"
     rep_origin      4089..4224
                     /label=SV40 ori
                     /note="SV40 origin of replication"
     primer_bind     4151..4170
                     /label=SV40pro-F
                     /note="SV40 promoter/origin, forward primer"
     CDS             4305..5099
                     /codon_start=1
                     /gene="aph(3')-II (or nptII)"
                     /product="aminoglycoside phosphotransferase from Tn5"
                     /label=NeoR/KanR
                     /note="confers resistance to neomycin, kanamycin, and G418 
                     (Geneticin(R))"
                     /translation="MIEQDGLHAGSPAAWVERLFGYDWAQQTIGCSDAAVFRLSAQGRP
                     VLFVKTDLSGALNELQDEAARLSWLATTGVPCAAVLDVVTEAGRDWLLLGEVPGQDLLS
                     SHLAPAEKVSIMADAMRRLHTLDPATCPFDHQAKHRIERARTRMEAGLVDQDDLDEEHQ
                     GLAPAELFARLKARMPDGEDLVVTHGDACLPNIMVENGRFSGFIDCGRLGVADRYQDIA
                     LATRDIAEELGGEWADRFLVLYGIAAPDSQRIAFYRLLDEFF"
     primer_bind     complement(4359..4378)
                     /label=Neo-R
                     /note="Neomycin resistance gene, reverse primer"
     primer_bind     4969..4988
                     /label=Neo-F
                     /note="Neomycin resistance gene, forward primer"
     polyA_signal    5273..5394
                     /label=SV40 poly(A) signal
                     /note="SV40 polyadenylation signal"
     primer_bind     complement(5310..5329)
                     /label=SV40pA-R
                     /note="SV40 polyA, reverse primer"
     primer_bind     5364..5383
                     /label=EBV-rev
                     /note="SV40 polyA terminator, reverse primer"
     primer_bind     complement(5443..5459)
                     /label=M13 rev
                     /note="common sequencing primer, one of multiple similar 
                     variants"
     primer_bind     complement(5443..5459)
                     /label=M13 Reverse
                     /note="In lacZ gene. Also called M13-rev"
     primer_bind     complement(5456..5478)
                     /label=M13/pUC Reverse
                     /note="In lacZ gene"
     protein_bind    5467..5483
                     /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)."
     promoter        complement(join(5491..5497,5498..5515,5516..5521))
                     /label=lac promoter
                     /note="promoter for the E. coli lac operon"
     protein_bind    5536..5557
                     /label=CAP binding site
                     /bound_moiety="E. coli catabolite activator protein"
                     /note="CAP binding activates transcription in the presence 
                     of cAMP."
     primer_bind     complement(5674..5691)
                     /label=L4440
                     /note="L4440 vector, forward primer"
     rep_origin      complement(5845..6433)
                     /direction=LEFT
                     /label=ori
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
                     replication"
     primer_bind     complement(5925..5944)
                     /label=pBR322ori-F
                     /note="pBR322 origin, forward primer"
     CDS             complement(join(6604..7395,7396..7464))
                     /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     7227..7246
                     /label=Amp-R
                     /note="Ampicillin resistance gene, reverse primer"
     promoter        complement(7465..7569)
                     /gene="bla"
                     /label=AmpR promoter
ORIGIN
        1 gacggatcgg gagatctccc gatcccctat ggtcgactct cagtacaatc tgctctgatg
       61 ccgcatagtt aagccagtat ctgctccctg cttgtgtgtt ggaggtcgct gagtagtgcg
      121 cgagcaaaat ttaagctaca acaaggcaag gcttgaccga caattgcatg aagaatctgc
      181 ttagggttag gcgttttgcg ctgcttcgcg atgtacgggc cagatatacg cgttgacatt
      241 gattattgac tagttattaa tagtaatcaa ttacggggtc attagttcat agcccatata
      301 tggagttccg cgttacataa cttacggtaa atggcccgcc tggctgaccg cccaacgacc
      361 cccgcccatt gacgtcaata atgacgtatg ttcccatagt aacgccaata gggactttcc
      421 attgacgtca atgggtggac tatttacggt aaactgccca cttggcagta catcaagtgt
      481 atcatatgcc aagtacgccc cctattgacg tcaatgacgg taaatggccc gcctggcatt
      541 atgcccagta catgacctta tgggactttc ctacttggca gtacatctac gtattagtca
      601 tcgctattac catggtgatg cggttttggc agtacatcaa tgggcgtgga tagcggtttg
      661 actcacgggg atttccaagt ctccacccca ttgacgtcaa tgggagtttg ttttggcacc
      721 aaaatcaacg ggactttcca aaatgtcgta acaactccgc cccattgacg caaatgggcg
      781 gtaggcgtgt acggtgggag gtctatataa gcagagctct ctggctaact agagaaccca
      841 ctgcttactg gcttatcgaa attaatacga ctcactatag ggagacccaa gctggctagc
      901 gtttaaactt aagcttgcca ccatggtgag caagagcgag gaggtcatca aagagttcat
      961 gcgcttcaag gtgcgcttgg agggctccat gaacggccac gagttcgaga tcgagggcga
     1021 gggcgagggc cgcccctacg agggcaccca gaccgccaag ctgaaggtga ccaagggcgg
     1081 ccccctgccc ttcgcctggg acatcctgtc cccccagatc atgtacggct ccaaggcgta
     1141 cgtgaagcac cccgccgacg tccccgatta catgaagctg tccttccccg agggcttcaa
     1201 gtgggagcgc gtgatgcact tcgaggacgg cggtctggtg accgtgactc aggacacctc
     1261 cctgcaggac ggcacgctga tctacaaggt gaagatgcgc ggcaccaact tcccccccga
     1321 cggccccgta atgcagaaga agaccttggg ctgggattat gccaccgagc gcctgtaccc
     1381 cgaagacggc gtgctgaagg gcgagcttct ggggcgcctg aagctgaagg acggcggcct
     1441 caacctggtg gagttcaaga ccatctacat ggccaagaag cccgtgcaac tgcccggcta
     1501 ctacttcgtg gacaccaagc tgggcatcac ctcccacaac gaggactaca ccatcgtgga
     1561 acagtacgag cgctccgagg gccgccacca cctggggcat ggtacaggta gcacaggcag
     1621 cggtagctcc ggtaccgcct ccggcctcga gagcgctgga ggtagcgcat ctggtggcgg
     1681 agccaccatc aaagagttca tgcgcttcaa ggtgcgcatg gagggctcca tgaacggcca
     1741 cgagttcgag atcgagggcg agggcgaggg ccgcccctac gagggcaccc agaccgccaa
     1801 gctgaaggtg accaagggcg gccccctgcc cttcgcctgg gacatcctgt ccccccagat
     1861 catgtacggc tccaaagcgt acgtgaggca ccccgccgac atccccgatt acaagaagct
     1921 gcccttcccc gagggcttca agtgggagcg cgtgatgaac ttcgaagacg gcggtctggt
     1981 gaccgttacc caggactcct ccctgcagga cggcacgctg atctgcaagg tgaagattcg
     2041 cggcaccaac ttcccccccg acggccccgt aatgcagaag aagaccatgg gctgggaggc
     2101 ctccaccgag atgctgtacc ccgaagacgg cgtgctgaag ggccatagct atcaggccct
     2161 gaagctgaag gacggcggcc actacctggt ggagttcgag accatctaca tggccaagaa
     2221 gcccgtgcaa ctgcccggcg attactgtgt ggacaccaag ctggacatca cctcccacaa
     2281 cgaggactac accatcgtgg aacagtacgg gcgctccgag ggccgccacc gtctgggcat
     2341 ggacgagcgg tacaagggca gcaccggcag cggcagctcc ggatccgcct ccggcgatga
     2401 ggtggatgga gccgtcatca aagagttcat gcgcttcaag gtgcgcttgg agggctccat
     2461 gaacggccac gagttcgaga tcgagggcga gggcgagggc cgcccttacg agggcaccca
     2521 gaccgccaag ctgaaggtga ccaagggcgg ccccctgccc ttcgcctggg acatcctgtc
     2581 ccccctgatc atgtacggct ccaagatgta cgtgaagcac cccgccgacg tccccgatta
     2641 catgaagctg tccttccccg agggcttcaa gtgggagcgc gtgatgcact tcgaggacgg
     2701 cggtctggtg accgcgacac aggactcctc cctgcaggac ggcacgctga tctacaaggt
     2761 gaagatgcgc ggcaccaact tcccccccga cggccccgta atgcagaaga agaccttggg
     2821 ctgggattat gccaccgagc gcctgtaccc cgaagaaggc gtgctgaagg gcgagctcct
     2881 ggggcgcctg aagctgaagg acggcggcct caacctggtg gagtccaaga ccatctacat
     2941 ggccaagaag cccgtgcaac tgcccggcta ctacttcgtg gacaccaagc tggacatcac
     3001 ctcccacaac gaggactaca ccatcgtgga acagtacgag cgctccgagg gccgccacca
     3061 cctggggcat ggcaccggca gcaccttagc cttgaaatta gcaggtcttg atatcgggag
     3121 ctagctcgag catgcatcta gagggcccta ttctatagtg tcacctaaat gctagagctc
     3181 gctgatcagc ctcgactgtg ccttctagtt gccagccatc tgttgtttgc ccctcccccg
     3241 tgccttcctt gaccctggaa ggtgccactc ccactgtcct ttcctaataa aatgaggaaa
     3301 ttgcatcgca ttgtctgagt aggtgtcatt ctattctggg gggtggggtg gggcaggaca
     3361 gcaaggggga ggattgggaa gacaatagca ggcatgctgg ggatgcggtg ggctctatgg
     3421 cttctgaggc ggaaagaacc agctggggct ctagggggta tccccacgcg ccctgtagcg
     3481 gcgcattaag cgcggcgggt gtggtggtta cgcgcagcgt gaccgctaca cttgccagcg
     3541 ccctagcgcc cgctcctttc gctttcttcc cttcctttct cgccacgttc gccggctttc
     3601 cccgtcaagc tctaaatcgg ggcatccctt tagggttccg atttagtgct ttacggcacc
     3661 tcgaccccaa aaaacttgat tagggtgatg gttcacgtag tgggccatcg ccctgataga
     3721 cggtttttcg ccctttgacg ttggagtcca cgttctttaa tagtggactc ttgttccaaa
     3781 ctggaacaac actcaaccct atctcggtct attcttttga tttataaggg attttgggga
     3841 tttcggccta ttggttaaaa aatgagctga tttaacaaaa atttaacgcg aattaattct
     3901 gtggaatgtg tgtcagttag ggtgtggaaa gtccccaggc tccccaggca ggcagaagta
     3961 tgcaaagcat gcatctcaat tagtcagcaa ccaggtgtgg aaagtcccca ggctccccag
     4021 caggcagaag tatgcaaagc atgcatctca attagtcagc aaccatagtc ccgcccctaa
     4081 ctccgcccat cccgccccta actccgccca gttccgccca ttctccgccc catggctgac
     4141 taattttttt tatttatgca gaggccgagg ccgcctctgc ctctgagcta ttccagaagt
     4201 agtgaggagg cttttttgga ggcctaggct tttgcaaaaa gctcccggga gcttgtatat
     4261 ccattttcgg atctgatcaa gagacaggat gaggatcgtt tcgcatgatt gaacaagatg
     4321 gattgcacgc aggttctccg gccgcttggg tggagaggct attcggctat gactgggcac
     4381 aacagacaat cggctgctct gatgccgccg tgttccggct gtcagcgcag gggcgcccgg
     4441 ttctttttgt caagaccgac ctgtccggtg ccctgaatga actgcaggac gaggcagcgc
     4501 ggctatcgtg gctggccacg acgggcgttc cttgcgcagc tgtgctcgac gttgtcactg
     4561 aagcgggaag ggactggctg ctattgggcg aagtgccggg gcaggatctc ctgtcatctc
     4621 accttgctcc tgccgagaaa gtatccatca tggctgatgc aatgcggcgg ctgcatacgc
     4681 ttgatccggc tacctgccca ttcgaccacc aagcgaaaca tcgcatcgag cgagcacgta
     4741 ctcggatgga agccggtctt gtcgatcagg atgatctgga cgaagagcat caggggctcg
     4801 cgccagccga actgttcgcc aggctcaagg cgcgcatgcc cgacggcgag gatctcgtcg
     4861 tgacccatgg cgatgcctgc ttgccgaata tcatggtgga aaatggccgc ttttctggat
     4921 tcatcgactg tggccggctg ggtgtggcgg accgctatca ggacatagcg ttggctaccc
     4981 gtgatattgc tgaagagctt ggcggcgaat gggctgaccg cttcctcgtg ctttacggta
     5041 tcgccgctcc cgattcgcag cgcatcgcct tctatcgcct tcttgacgag ttcttctgag
     5101 cgggactctg gggttcgaaa tgaccgacca agcgacgccc aacctgccat cacgagattt
     5161 cgattccacc gccgccttct atgaaaggtt gggcttcgga atcgttttcc gggacgccgg
     5221 ctggatgatc ctccagcgcg gggatctcat gctggagttc ttcgcccacc ccaacttgtt
     5281 tattgcagct tataatggtt acaaataaag caatagcatc acaaatttca caaataaagc
     5341 atttttttca ctgcattcta gttgtggttt gtccaaactc atcaatgtat cttatcatgt
     5401 ctgtataccg tcgacctcta gctagagctt ggcgtaatca tggtcatagc tgtttcctgt
     5461 gtgaaattgt tatccgctca caattccaca caacatacga gccggaagca taaagtgtaa
     5521 agcctggggt gcctaatgag tgagctaact cacattaatt gcgttgcgct cactgcccgc
     5581 tttccagtcg ggaaacctgt cgtgccagct gcattaatga atcggccaac gcgcggggag
     5641 aggcggtttg cgtattgggc gctcttccgc ttcctcgctc actgactcgc tgcgctcggt
     5701 cgttcggctg cggcgagcgg tatcagctca ctcaaaggcg gtaatacggt tatccacaga
     5761 atcaggggat aacgcaggaa agaacatgtg agcaaaaggc cagcaaaagg ccaggaaccg
     5821 taaaaaggcc gcgttgctgg cgtttttcca taggctccgc ccccctgacg agcatcacaa
     5881 aaatcgacgc tcaagtcaga ggtggcgaaa cccgacagga ctataaagat accaggcgtt
     5941 tccccctgga agctccctcg tgcgctctcc tgttccgacc ctgccgctta ccggatacct
     6001 gtccgccttt ctcccttcgg gaagcgtggc gctttctcaa tgctcacgct gtaggtatct
     6061 cagttcggtg taggtcgttc gctccaagct gggctgtgtg cacgaacccc ccgttcagcc
     6121 cgaccgctgc gccttatccg gtaactatcg tcttgagtcc aacccggtaa gacacgactt
     6181 atcgccactg gcagcagcca ctggtaacag gattagcaga gcgaggtatg taggcggtgc
     6241 tacagagttc ttgaagtggt ggcctaacta cggctacact agaaggacag tatttggtat
     6301 ctgcgctctg ctgaagccag ttaccttcgg aaaaagagtt ggtagctctt gatccggcaa
     6361 acaaaccacc gctggtagcg gtggtttttt tgtttgcaag cagcagatta cgcgcagaaa
     6421 aaaaggatct caagaagatc ctttgatctt ttctacgggg tctgacgctc agtggaacga
     6481 aaactcacgt taagggattt tggtcatgag attatcaaaa aggatcttca cctagatcct
     6541 tttaaattaa aaatgaagtt ttaaatcaat ctaaagtata tatgagtaaa cttggtctga
     6601 cagttaccaa tgcttaatca gtgaggcacc tatctcagcg atctgtctat ttcgttcatc
     6661 catagttgcc tgactccccg tcgtgtagat aactacgata cgggagggct taccatctgg
     6721 ccccagtgct gcaatgatac cgcgagaccc acgctcaccg gctccagatt tatcagcaat
     6781 aaaccagcca gccggaaggg ccgagcgcag aagtggtcct gcaactttat ccgcctccat
     6841 ccagtctatt aattgttgcc gggaagctag agtaagtagt tcgccagtta atagtttgcg
     6901 caacgttgtt gccattgcta caggcatcgt ggtgtcacgc tcgtcgtttg gtatggcttc
     6961 attcagctcc ggttcccaac gatcaaggcg agttacatga tcccccatgt tgtgcaaaaa
     7021 agcggttagc tccttcggtc ctccgatcgt tgtcagaagt aagttggccg cagtgttatc
     7081 actcatggtt atggcagcac tgcataattc tcttactgtc atgccatccg taagatgctt
     7141 ttctgtgact ggtgagtact caaccaagtc attctgagaa tagtgtatgc ggcgaccgag
     7201 ttgctcttgc ccggcgtcaa tacgggataa taccgcgcca catagcagaa ctttaaaagt
     7261 gctcatcatt ggaaaacgtt cttcggggcg aaaactctca aggatcttac cgctgttgag
     7321 atccagttcg atgtaaccca ctcgtgcacc caactgatct tcagcatctt ttactttcac
     7381 cagcgtttct gggtgagcaa aaacaggaag gcaaaatgcc gcaaaaaagg gaataagggc
     7441 gacacggaaa tgttgaatac tcatactctt cctttttcaa tattattgaa gcatttatca
     7501 gggttattgt ctcatgagcg gatacatatt tgaatgtatt tagaaaaata aacaaatagg
     7561 ggttccgcgc acatttcccc gaaaagtgcc acctgacgtc
//
