LOCUS       sequence-148887-        6976 bp    DNA     circular SYN 15-DEC-2025
DEFINITION  Proton Channel Fluorescent Voltage Indicator.
ACCESSION   .
VERSION     .
KEYWORDS    .
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 6976)
  AUTHORS   Kang BE, Baker BJ
  TITLE     Pado, a fluorescent protein with proton channel activity can 
            optically monitor membrane potential, intracellular pH, and map gap 
            junctions.
  JOURNAL   Sci Rep. 2016 Apr 4;6:23865. doi: 10.1038/srep23865.
  PUBMED    27040905
REFERENCE   2  (bases 1 to 6976)
  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: "Sci Rep."; 
            date: "2016-04-4"; volume: "6:23865. doi"; pages: " 
            10.1038/srep23865"
COMMENT     Sequence Label: Pado pcDNA3.1
FEATURES             Location/Qualifiers
     source          1..6976
                     /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      901..910
                     /label=Kozak sequence
                     /note="vertebrate consensus sequence for strong initiation 
                     of translation (Kozak, 1987)"
                     /regulatory_class="other"
     CDS             1813..2529
                     /codon_start=1
                     /product="pH-sensitive mutant of green fluorescent protein 
                     (Ng et al., 2002)"
                     /label=superecliptic pHluorin
                     /note="excited strongly by blue light at neutral pH but 
                     minimally fluorescent at acidic pH"
                     /translation="MSKGEELFTGVVPILVELDGDVNGHKFSVSGEGEGDATYGKLTLK
                     FICTTGKLPVPWPTLVTTLTYGVQCFSRYPDHMKRHDFFKSAMPEGYVQERTIFFKDDG
                     NYKTRAEVKFEGDTLVNRIELKGIDFKEDGNILGHKLEYNYNDHQVYIMADKQKNGIKA
                     NFKIRHNIEDGGVQLADHYQQNTPIGDGPVLLPDNHYLFTTSTLSKDPNEKRDHMVLLE
                     FVTADGITHGMDELYK"
     primer_bind     complement(1843..1871)
                     /label=GFP-R
                     /note="GFP, reverse primer. Does NOT anneal to EGFP"
     primer_bind     2466..2486
                     /label=GFP-F
                     /note="GFP, forward primer. Does NOT anneal to EGFP"
     primer_bind     complement(2570..2587)
                     /label=BGH-rev
                     /note="Bovine growth hormone terminator, reverse primer. 
                     Also called BGH reverse"
     polyA_signal    2576..2800
                     /label=bGH poly(A) signal
                     /note="bovine growth hormone polyadenylation signal"
     rep_origin      2846..3274
                     /direction=RIGHT
                     /label=f1 ori
                     /note="f1 bacteriophage origin of replication; arrow 
                     indicates direction of (+) strand synthesis"
     primer_bind     complement(2933..2952)
                     /label=F1ori-R
                     /note="F1 origin, reverse primer"
     primer_bind     3143..3164
                     /label=F1ori-F
                     /note="F1 origin, forward primer"
     primer_bind     complement(3283..3303)
                     /label=pBABE 3'
                     /note="SV40 enhancer, reverse primer for pBABE vectors"
     promoter        3288..3617
                     /label=SV40 promoter
                     /note="SV40 enhancer and early promoter"
     rep_origin      3468..3603
                     /label=SV40 ori
                     /note="SV40 origin of replication"
     primer_bind     3530..3549
                     /label=SV40pro-F
                     /note="SV40 promoter/origin, forward primer"
     CDS             3684..4478
                     /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(3738..3757)
                     /label=Neo-R
                     /note="Neomycin resistance gene, reverse primer"
     primer_bind     4348..4367
                     /label=Neo-F
                     /note="Neomycin resistance gene, forward primer"
     polyA_signal    4652..4773
                     /label=SV40 poly(A) signal
                     /note="SV40 polyadenylation signal"
     primer_bind     complement(4689..4708)
                     /label=SV40pA-R
                     /note="SV40 polyA, reverse primer"
     primer_bind     4743..4762
                     /label=EBV-rev
                     /note="SV40 polyA terminator, reverse primer"
     primer_bind     complement(4822..4838)
                     /label=M13 rev
                     /note="common sequencing primer, one of multiple similar 
                     variants"
     primer_bind     complement(4822..4838)
                     /label=M13 Reverse
                     /note="In lacZ gene. Also called M13-rev"
     primer_bind     complement(4835..4857)
                     /label=M13/pUC Reverse
                     /note="In lacZ gene"
     protein_bind    4846..4862
                     /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(4870..4876,4877..4894,4895..4900))
                     /label=lac promoter
                     /note="promoter for the E. coli lac operon"
     protein_bind    4915..4936
                     /label=CAP binding site
                     /bound_moiety="E. coli catabolite activator protein"
                     /note="CAP binding activates transcription in the presence 
                     of cAMP."
     primer_bind     complement(5053..5070)
                     /label=L4440
                     /note="L4440 vector, forward primer"
     rep_origin      complement(5224..5809)
                     /direction=LEFT
                     /label=ori
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
                     replication"
     primer_bind     complement(5304..5323)
                     /label=pBR322ori-F
                     /note="pBR322 origin, forward primer"
     CDS             complement(join(5980..6771,6772..6840))
                     /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     6603..6622
                     /label=Amp-R
                     /note="Ampicillin resistance gene, reverse primer"
     promoter        complement(6841..6945)
                     /gene="bla"
                     /label=AmpR promoter
ORIGIN
        1 gacggatcgg gagatctccc gatcccctat ggtgcactct 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 atgggtggag 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 gccaccatgg agggattcga cggttcagat tttagtcctc cagctgattt agttggcgtt
      961 gacggtgcag tcatgcggaa cgtcgttgac gtcacgataa atggtgacgt cactgctccg
     1021 ccgaaagctg cgccaagaaa aagtgaatcg gtaaagaaag ttcattggaa tgatgtagac
     1081 caaggaccga gtgaaaaacc agagacaaga caggaggaac gaatagatat acccgagatt
     1141 tcaggtctat ggtggggcga gaatgaacat ggagtggacg atgggagaat ggagatacct
     1201 actactggtg taggtcgcgt ccagtttcgg atccgagccg tgattgatca tctagggatg
     1261 cgagtgttcc acctgaccat cgtgatcctg tgctgcctgg acggcctgct ggtgatctgc
     1321 gtgctgctgc tggagatcga ggccctgaag ctgaagagca gcagcgagct gaggcctaag
     1381 ctggtgaacg tgcagttcgc catcgagtgc tgcagcctgg ccatcgtgtt cctgttcgtg
     1441 gtggagatcc ctttcaagct gtggatcttc ggctgcagga tgttcttcca caactggctg
     1501 gagatcatcg acgccctggt gtgcctggtg agcttcgccg ccgacagcta cagcatcatc
     1561 caccacaccc tgcaccacta caccaacacc gacaggcctc agagccacat gcagaccagc
     1621 cagagcaacg ccaccagggg cctgaccgag cacttccctg tggaggagag cgccgccagc
     1681 aacaccatcg tggacgccgc cgccctgctg atcctgttca ggctgtggag ggtggtgagg
     1741 atcttttatt cccaccaaca aatgaaggct tcaagcagaa gaacaatatc acagaacaaa
     1801 agaagatatc gcatgagtaa aggagaagaa cttttcactg gagttgtccc aattcttgtt
     1861 gaattagatg gtgatgttaa tgggcacaaa ttttctgtca gtggagaggg tgaaggtgat
     1921 gcaacatacg gaaaacttac ccttaaattt atttgcacta ctggaaaact acctgttcca
     1981 tggccaacac ttgtcactac tttaacttat ggtgttcaat gcttttcaag atacccagat
     2041 catatgaaac ggcatgactt tttcaagagt gccatgcccg aaggttatgt acaggaaaga
     2101 actatatttt tcaaagatga cgggaactac aagacacgtg ctgaagtcaa gtttgaaggt
     2161 gatacccttg ttaatagaat cgagttaaaa ggtattgatt ttaaagaaga tggaaacatt
     2221 cttggacaca aattggaata caactataac gatcaccagg tgtacatcat ggcagacaaa
     2281 caaaagaatg gaatcaaagc taacttcaaa attagacaca acattgaaga tggaggcgtt
     2341 caactagcag accattatca acaaaatact ccaattggcg atgggcccgt ccttttacca
     2401 gacaaccatt acctgtttac aacttctact ctttcgaaag atcccaacga aaagagagac
     2461 cacatggtcc ttcttgagtt tgtaacagct gatgggatta cacatggcat ggatgaacta
     2521 tacaaatgat gactcgagtc tagagggccc gtttaaaccc gctgatcagc ctcgactgtg
     2581 ccttctagtt gccagccatc tgttgtttgc ccctcccccg tgccttcctt gaccctggaa
     2641 ggtgccactc ccactgtcct ttcctaataa aatgaggaaa ttgcatcgca ttgtctgagt
     2701 aggtgtcatt ctattctggg gggtggggtg gggcaggaca gcaaggggga ggattgggaa
     2761 gacaatagca ggcatgctgg ggatgcggtg ggctctatgg cttctgaggc ggaaagaacc
     2821 agctggggct ctagggggta tccccacgcg ccctgtagcg gcgcattaag cgcggcgggt
     2881 gtggtggtta cgcgcagcgt gaccgctaca cttgccagcg ccctagcgcc cgctcctttc
     2941 gctttcttcc cttcctttct cgccacgttc gccggctttc cccgtcaagc tctaaatcgg
     3001 gggctccctt tagggttccg atttagtgct ttacggcacc tcgaccccaa aaaacttgat
     3061 tagggtgatg gttcacgtag tgggccatcg ccctgataga cggtttttcg ccctttgacg
     3121 ttggagtcca cgttctttaa tagtggactc ttgttccaaa ctggaacaac actcaaccct
     3181 atctcggtct attcttttga tttataaggg attttgccga tttcggccta ttggttaaaa
     3241 aatgagctga tttaacaaaa atttaacgcg aattaattct gtggaatgtg tgtcagttag
     3301 ggtgtggaaa gtccccaggc tccccagcag gcagaagtat gcaaagcatg catctcaatt
     3361 agtcagcaac caggtgtgga aagtccccag gctccccagc aggcagaagt atgcaaagca
     3421 tgcatctcaa ttagtcagca accatagtcc cgcccctaac tccgcccatc ccgcccctaa
     3481 ctccgcccag ttccgcccat tctccgcccc atggctgact aatttttttt atttatgcag
     3541 aggccgaggc cgcctctgcc tctgagctat tccagaagta gtgaggaggc ttttttggag
     3601 gcctaggctt ttgcaaaaag ctcccgggag cttgtatatc cattttcgga tctgatcaag
     3661 agacaggatg aggatcgttt cgcatgattg aacaagatgg attgcacgca ggttctccgg
     3721 ccgcttgggt ggagaggcta ttcggctatg actgggcaca acagacaatc ggctgctctg
     3781 atgccgccgt gttccggctg tcagcgcagg ggcgcccggt tctttttgtc aagaccgacc
     3841 tgtccggtgc cctgaatgaa ctgcaggacg aggcagcgcg gctatcgtgg ctggccacga
     3901 cgggcgttcc ttgcgcagct gtgctcgacg ttgtcactga agcgggaagg gactggctgc
     3961 tattgggcga agtgccgggg caggatctcc tgtcatctca ccttgctcct gccgagaaag
     4021 tatccatcat ggctgatgca atgcggcggc tgcatacgct tgatccggct acctgcccat
     4081 tcgaccacca agcgaaacat cgcatcgagc gagcacgtac tcggatggaa gccggtcttg
     4141 tcgatcagga tgatctggac gaagagcatc aggggctcgc gccagccgaa ctgttcgcca
     4201 ggctcaaggc gcgcatgccc gacggcgagg atctcgtcgt gacccatggc gatgcctgct
     4261 tgccgaatat catggtggaa aatggccgct tttctggatt catcgactgt ggccggctgg
     4321 gtgtggcgga ccgctatcag gacatagcgt tggctacccg tgatattgct gaagagcttg
     4381 gcggcgaatg ggctgaccgc ttcctcgtgc tttacggtat cgccgctccc gattcgcagc
     4441 gcatcgcctt ctatcgcctt cttgacgagt tcttctgagc gggactctgg ggttcgaaat
     4501 gaccgaccaa gcgacgccca acctgccatc acgagatttc gattccaccg ccgccttcta
     4561 tgaaaggttg ggcttcggaa tcgttttccg ggacgccggc tggatgatcc tccagcgcgg
     4621 ggatctcatg ctggagttct tcgcccaccc caacttgttt attgcagctt ataatggtta
     4681 caaataaagc aatagcatca caaatttcac aaataaagca tttttttcac tgcattctag
     4741 ttgtggtttg tccaaactca tcaatgtatc ttatcatgtc tgtataccgt cgacctctag
     4801 ctagagcttg gcgtaatcat ggtcatagct gtttcctgtg tgaaattgtt atccgctcac
     4861 aattccacac aacatacgag ccggaagcat aaagtgtaaa gcctggggtg cctaatgagt
     4921 gagctaactc acattaattg cgttgcgctc actgcccgct ttccagtcgg gaaacctgtc
     4981 gtgccagctg cattaatgaa tcggccaacg cgcggggaga ggcggtttgc gtattgggcg
     5041 ctcttccgct tcctcgctca ctgactcgct gcgctcggtc gttcggctgc ggcgagcggt
     5101 atcagctcac tcaaaggcgg taatacggtt atccacagaa tcaggggata acgcaggaaa
     5161 gaacatgtga gcaaaaggcc agcaaaaggc caggaaccgt aaaaaggccg cgttgctggc
     5221 gtttttccat aggctccgcc cccctgacga gcatcacaaa aatcgacgct caagtcagag
     5281 gtggcgaaac ccgacaggac tataaagata ccaggcgttt ccccctggaa gctccctcgt
     5341 gcgctctcct gttccgaccc tgccgcttac cggatacctg tccgcctttc tcccttcggg
     5401 aagcgtggcg ctttctcata gctcacgctg taggtatctc agttcggtgt aggtcgttcg
     5461 ctccaagctg ggctgtgtgc acgaaccccc cgttcagccc gaccgctgcg ccttatccgg
     5521 taactatcgt cttgagtcca acccggtaag acacgactta tcgccactgg cagcagccac
     5581 tggtaacagg attagcagag cgaggtatgt aggcggtgct acagagttct tgaagtggtg
     5641 gcctaactac ggctacacta gaagaacagt atttggtatc tgcgctctgc tgaagccagt
     5701 taccttcgga aaaagagttg gtagctcttg atccggcaaa caaaccaccg ctggtagcgg
     5761 tttttttgtt tgcaagcagc agattacgcg cagaaaaaaa ggatctcaag aagatccttt
     5821 gatcttttct acggggtctg acgctcagtg gaacgaaaac tcacgttaag ggattttggt
     5881 catgagatta tcaaaaagga tcttcaccta gatcctttta aattaaaaat gaagttttaa
     5941 atcaatctaa agtatatatg agtaaacttg gtctgacagt taccaatgct taatcagtga
     6001 ggcacctatc tcagcgatct gtctatttcg ttcatccata gttgcctgac tccccgtcgt
     6061 gtagataact acgatacggg agggcttacc atctggcccc agtgctgcaa tgataccgcg
     6121 agacccacgc tcaccggctc cagatttatc agcaataaac cagccagccg gaagggccga
     6181 gcgcagaagt ggtcctgcaa ctttatccgc ctccatccag tctattaatt gttgccggga
     6241 agctagagta agtagttcgc cagttaatag tttgcgcaac gttgttgcca ttgctacagg
     6301 catcgtggtg tcacgctcgt cgtttggtat ggcttcattc agctccggtt cccaacgatc
     6361 aaggcgagtt acatgatccc ccatgttgtg caaaaaagcg gttagctcct tcggtcctcc
     6421 gatcgttgtc agaagtaagt tggccgcagt gttatcactc atggttatgg cagcactgca
     6481 taattctctt actgtcatgc catccgtaag atgcttttct gtgactggtg agtactcaac
     6541 caagtcattc tgagaatagt gtatgcggcg accgagttgc tcttgcccgg cgtcaatacg
     6601 ggataatacc gcgccacata gcagaacttt aaaagtgctc atcattggaa aacgttcttc
     6661 ggggcgaaaa ctctcaagga tcttaccgct gttgagatcc agttcgatgt aacccactcg
     6721 tgcacccaac tgatcttcag catcttttac tttcaccagc gtttctgggt gagcaaaaac
     6781 aggaaggcaa aatgccgcaa aaaagggaat aagggcgaca cggaaatgtt gaatactcat
     6841 actcttcctt tttcaatatt attgaagcat ttatcagggt tattgtctca tgagcggata
     6901 catatttgaa tgtatttaga aaaataaaca aataggggtt ccgcgcacat ttccccgaaa
     6961 agtgccacct gacgtc
//
