LOCUS       sequence-313235-        6312 bp    DNA     circular SYN 15-DEC-2025
DEFINITION  Expresses SARS-CoV-2 RBD (340-538) (receptor-binding domain from 
            Spike) with N-terminal SpyTag fusion in mammalian cells.
ACCESSION   .
VERSION     .
KEYWORDS    .
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 6312)
  AUTHORS   Rahikainen R, Rijal P, Tan TK, Wu HJ, Andersson AC, Barrett JR, 
            Bowden TA, Draper SJ, Townsend AR, Howarth M
  TITLE     Overcoming Symmetry Mismatch in Vaccine Nanoassembly through 
            Spontaneous Amidation.
  JOURNAL   Angew Chem Int Ed Engl. 2020 Sep 4. doi: 10.1002/anie.202009663.
  PUBMED    32886840
REFERENCE   2  (bases 1 to 6312)
  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: "Angew Chem 
            Int Ed Engl. 2020 Sep 4. doi: 10.1002/anie.202009663."
COMMENT     Sequence Label: SpyTag-RBD
FEATURES             Location/Qualifiers
     source          1..6312
                     /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"
     CDS             1010..1048
                     /codon_start=1
                     /product="peptide derived from the CnaB2 adhesin domain of 
                     Streptococcus pyogenes FbaB"
                     /label=SpyTag
                     /note="forms a covalent isopeptide bond with the SpyCatcher
                     protein (Zakeri et al., 2012)"
                     /translation="AHIVMVDAYKPTK"
     primer_bind     complement(1903..1920)
                     /label=BGH-rev
                     /note="Bovine growth hormone terminator, reverse primer. 
                     Also called BGH reverse"
     polyA_signal    1909..2133
                     /label=bGH poly(A) signal
                     /note="bovine growth hormone polyadenylation signal"
     rep_origin      2179..2607
                     /direction=RIGHT
                     /label=f1 ori
                     /note="f1 bacteriophage origin of replication; arrow 
                     indicates direction of (+) strand synthesis"
     primer_bind     complement(2266..2285)
                     /label=F1ori-R
                     /note="F1 origin, reverse primer"
     primer_bind     2476..2497
                     /label=F1ori-F
                     /note="F1 origin, forward primer"
     primer_bind     complement(2616..2636)
                     /label=pBABE 3'
                     /note="SV40 enhancer, reverse primer for pBABE vectors"
     promoter        2621..2950
                     /label=SV40 promoter
                     /note="SV40 enhancer and early promoter"
     rep_origin      2801..2936
                     /label=SV40 ori
                     /note="SV40 origin of replication"
     primer_bind     2863..2882
                     /label=SV40pro-F
                     /note="SV40 promoter/origin, forward primer"
     CDS             3017..3811
                     /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(3071..3090)
                     /label=Neo-R
                     /note="Neomycin resistance gene, reverse primer"
     primer_bind     3681..3700
                     /label=Neo-F
                     /note="Neomycin resistance gene, forward primer"
     polyA_signal    3985..4106
                     /label=SV40 poly(A) signal
                     /note="SV40 polyadenylation signal"
     primer_bind     complement(4022..4041)
                     /label=SV40pA-R
                     /note="SV40 polyA, reverse primer"
     primer_bind     4076..4095
                     /label=EBV-rev
                     /note="SV40 polyA terminator, reverse primer"
     primer_bind     complement(4155..4171)
                     /label=M13 rev
                     /note="common sequencing primer, one of multiple similar 
                     variants"
     primer_bind     complement(4155..4171)
                     /label=M13 Reverse
                     /note="In lacZ gene. Also called M13-rev"
     primer_bind     complement(4168..4190)
                     /label=M13/pUC Reverse
                     /note="In lacZ gene"
     protein_bind    4179..4195
                     /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(4203..4209,4210..4227,4228..4233))
                     /label=lac promoter
                     /note="promoter for the E. coli lac operon"
     protein_bind    4248..4269
                     /label=CAP binding site
                     /bound_moiety="E. coli catabolite activator protein"
                     /note="CAP binding activates transcription in the presence 
                     of cAMP."
     primer_bind     complement(4386..4403)
                     /label=L4440
                     /note="L4440 vector, forward primer"
     rep_origin      complement(4557..5145)
                     /direction=LEFT
                     /label=ori
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
                     replication"
     primer_bind     complement(4637..4656)
                     /label=pBR322ori-F
                     /note="pBR322 origin, forward primer"
     CDS             complement(join(5316..6107,6108..6176))
                     /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     5939..5958
                     /label=Amp-R
                     /note="Ampicillin resistance gene, reverse primer"
     promoter        complement(6177..6281)
                     /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 gtttaaacgg gccctctaga ctcgagcggc cgccaccatg aacacccaga tcctggtgtt
      961 cgccctgatc gccatcattc ccaccaacgc cgacaagatc ggatctggcg cccacatcgt
     1021 gatggtggac gcctacaagc ctaccaaagg cagcggtgga agcggcggat ctggaaccgg
     1081 taatatcacc aatctgtgcc ctttcggcga ggtgttcaat gccaccagat tcgccagcgt
     1141 gtacgcatgg aaccgcaagc ggataagcaa ttgcgtggcc gactacagcg tgctgtacaa
     1201 tagcgccagc ttcagcacct tcaaatgtta tggtgtttcg ccaacaaagc tgaatgacct
     1261 gtgcttcacc aatgtgtacg ccgacagctt cgtgatcaga ggcgacgagg tgagacagat
     1321 cgcgccaggg cagaccggca agatcgccga ctacaattac aagctgcctg acgacttcac
     1381 cggctgcgtg atcgcgtgga actctaacaa tctagattcg aaagttggag gcaattacaa
     1441 ttacctgtac agactgttca gaaagagcaa tctgaagcct ttcgagagag acatcagcac
     1501 cgagatctac caggccggca gcacaccgtg taatggcgtg gagggcttca attgctactt
     1561 ccctctgcag agctacggct tccagcctac caatggcgtg ggctaccagc cttacagagt
     1621 ggtggtgctg agcttcgagc tgctgcacgc tcccgctacc gtgtgcggcc ctaagaagta
     1681 gtagaccggt aagctgagca gcggctacaa ggacgtgatc ctgtggttca gcttcggcgc
     1741 cagctgcttc atcctgctgg ccatcgtgat gggcctggtg ttcatctgcg tgaagaacgg
     1801 caacatgcgg tgcaccatct gcatctgatg atatcgaatt ccaccacact ggactagtgg
     1861 atccgagctc ggtaccaagc ttaagtttaa accgctgatc agcctcgact gtgccttcta
     1921 gttgccagcc atctgttgtt tgcccctccc ccgtgccttc cttgaccctg gaaggtgcca
     1981 ctcccactgt cctttcctaa taaaatgagg aaattgcatc gcattgtctg agtaggtgtc
     2041 attctattct ggggggtggg gtggggcagg acagcaaggg ggaggattgg gaagacaata
     2101 gcaggcatgc tggggatgcg gtgggctcta tggcttctga ggcggaaaga accagctggg
     2161 gctctagggg gtatccccac gcgccctgta gcggcgcatt aagcgcggcg ggtgtggtgg
     2221 ttacgcgcag cgtgaccgct acacttgcca gcgccctagc gcccgctcct ttcgctttct
     2281 tcccttcctt tctcgccacg ttcgccggct ttccccgtca agctctaaat cgggggctcc
     2341 ctttagggtt ccgatttagt gctttacggc acctcgaccc caaaaaactt gattagggtg
     2401 atggttcacg tagtgggcca tcgccctgat agacggtttt tcgccctttg acgttggagt
     2461 ccacgttctt taatagtgga ctcttgttcc aaactggaac aacactcaac cctatctcgg
     2521 tctattcttt tgatttataa gggattttgc cgatttcggc ctattggtta aaaaatgagc
     2581 tgatttaaca aaaatttaac gcgaattaat tctgtggaat gtgtgtcagt tagggtgtgg
     2641 aaagtcccca ggctccccag caggcagaag tatgcaaagc atgcatctca attagtcagc
     2701 aaccaggtgt ggaaagtccc caggctcccc agcaggcaga agtatgcaaa gcatgcatct
     2761 caattagtca gcaaccatag tcccgcccct aactccgccc atcccgcccc taactccgcc
     2821 cagttccgcc cattctccgc cccatggctg actaattttt tttatttatg cagaggccga
     2881 ggccgcctct gcctctgagc tattccagaa gtagtgagga ggcttttttg gaggcctagg
     2941 cttttgcaaa aagctcccgg gagcttgtat atccattttc ggatctgatc aagagacagg
     3001 atgaggatcg tttcgcatga ttgaacaaga tggattgcac gcaggttctc cggccgcttg
     3061 ggtggagagg ctattcggct atgactgggc acaacagaca atcggctgct ctgatgccgc
     3121 cgtgttccgg ctgtcagcgc aggggcgccc ggttcttttt gtcaagaccg acctgtccgg
     3181 tgccctgaat gaactgcagg acgaggcagc gcggctatcg tggctggcca cgacgggcgt
     3241 tccttgcgca gctgtgctcg acgttgtcac tgaagcggga agggactggc tgctattggg
     3301 cgaagtgccg gggcaggatc tcctgtcatc tcaccttgct cctgccgaga aagtatccat
     3361 catggctgat gcaatgcggc ggctgcatac gcttgatccg gctacctgcc cattcgacca
     3421 ccaagcgaaa catcgcatcg agcgagcacg tactcggatg gaagccggtc ttgtcgatca
     3481 ggatgatctg gacgaagagc atcaggggct cgcgccagcc gaactgttcg ccaggctcaa
     3541 ggcgcgcatg cccgacggcg aggatctcgt cgtgacccat ggcgatgcct gcttgccgaa
     3601 tatcatggtg gaaaatggcc gcttttctgg attcatcgac tgtggccggc tgggtgtggc
     3661 ggaccgctat caggacatag cgttggctac ccgtgatatt gctgaagagc ttggcggcga
     3721 atgggctgac cgcttcctcg tgctttacgg tatcgccgct cccgattcgc agcgcatcgc
     3781 cttctatcgc cttcttgacg agttcttctg agcgggactc tggggttcga aatgaccgac
     3841 caagcgacgc ccaacctgcc atcacgagat ttcgattcca ccgccgcctt ctatgaaagg
     3901 ttgggcttcg gaatcgtttt ccgggacgcc ggctggatga tcctccagcg cggggatctc
     3961 atgctggagt tcttcgccca ccccaacttg tttattgcag cttataatgg ttacaaataa
     4021 agcaatagca tcacaaattt cacaaataaa gcattttttt cactgcattc tagttgtggt
     4081 ttgtccaaac tcatcaatgt atcttatcat gtctgtatac cgtcgacctc tagctagagc
     4141 ttggcgtaat catggtcata gctgtttcct gtgtgaaatt gttatccgct cacaattcca
     4201 cacaacatac gagccggaag cataaagtgt aaagcctggg gtgcctaatg agtgagctaa
     4261 ctcacattaa ttgcgttgcg ctcactgccc gctttccagt cgggaaacct gtcgtgccag
     4321 ctgcattaat gaatcggcca acgcgcgggg agaggcggtt tgcgtattgg gcgctcttcc
     4381 gcttcctcgc tcactgactc gctgcgctcg gtcgttcggc tgcggcgagc ggtatcagct
     4441 cactcaaagg cggtaatacg gttatccaca gaatcagggg ataacgcagg aaagaacatg
     4501 tgagcaaaag gccagcaaaa ggccaggaac cgtaaaaagg ccgcgttgct ggcgtttttc
     4561 cataggctcc gcccccctga cgagcatcac aaaaatcgac gctcaagtca gaggtggcga
     4621 aacccgacag gactataaag ataccaggcg tttccccctg gaagctccct cgtgcgctct
     4681 cctgttccga ccctgccgct taccggatac ctgtccgcct ttctcccttc gggaagcgtg
     4741 gcgctttctc atagctcacg ctgtaggtat ctcagttcgg tgtaggtcgt tcgctccaag
     4801 ctgggctgtg tgcacgaacc ccccgttcag cccgaccgct gcgccttatc cggtaactat
     4861 cgtcttgagt ccaacccggt aagacacgac ttatcgccac tggcagcagc cactggtaac
     4921 aggattagca gagcgaggta tgtaggcggt gctacagagt tcttgaagtg gtggcctaac
     4981 tacggctaca ctagaagaac agtatttggt atctgcgctc tgctgaagcc agttaccttc
     5041 ggaaaaagag ttggtagctc ttgatccggc aaacaaacca ccgctggtag cggtggtttt
     5101 tttgtttgca agcagcagat tacgcgcaga aaaaaaggat ctcaagaaga tcctttgatc
     5161 ttttctacgg ggtctgacgc tcagtggaac gaaaactcac gttaagggat tttggtcatg
     5221 agattatcaa aaaggatctt cacctagatc cttttaaatt aaaaatgaag ttttaaatca
     5281 atctaaagta tatatgagta aacttggtct gacagttacc aatgcttaat cagtgaggca
     5341 cctatctcag cgatctgtct atttcgttca tccatagttg cctgactccc cgtcgtgtag
     5401 ataactacga tacgggaggg cttaccatct ggccccagtg ctgcaatgat accgcgagac
     5461 ccacgctcac cggctccaga tttatcagca ataaaccagc cagccggaag ggccgagcgc
     5521 agaagtggtc ctgcaacttt atccgcctcc atccagtcta ttaattgttg ccgggaagct
     5581 agagtaagta gttcgccagt taatagtttg cgcaacgttg ttgccattgc tacaggcatc
     5641 gtggtgtcac gctcgtcgtt tggtatggct tcattcagct ccggttccca acgatcaagg
     5701 cgagttacat gatcccccat gttgtgcaaa aaagcggtta gctccttcgg tcctccgatc
     5761 gttgtcagaa gtaagttggc cgcagtgtta tcactcatgg ttatggcagc actgcataat
     5821 tctcttactg tcatgccatc cgtaagatgc ttttctgtga ctggtgagta ctcaaccaag
     5881 tcattctgag aatagtgtat gcggcgaccg agttgctctt gcccggcgtc aatacgggat
     5941 aataccgcgc cacatagcag aactttaaaa gtgctcatca ttggaaaacg ttcttcgggg
     6001 cgaaaactct caaggatctt accgctgttg agatccagtt cgatgtaacc cactcgtgca
     6061 cccaactgat cttcagcatc ttttactttc accagcgttt ctgggtgagc aaaaacagga
     6121 aggcaaaatg ccgcaaaaaa gggaataagg gcgacacgga aatgttgaat actcatactc
     6181 ttcctttttc aatattattg aagcatttat cagggttatt gtctcatgag cggatacata
     6241 tttgaatgta tttagaaaaa taaacaaata ggggttccgc gcacatttcc ccgaaaagtg
     6301 ccacctgacg tc
//
