Coordinated Evolution of Influenza A Surface Proteins

PLoS Genetics

Volumn 11, Issue 8, 2015, Pages

  Neverov, Alexey D ^a   Kryazhimskiy, Sergey ^b,c   Plotkin, Joshua B ^d   Bazykin, Georgii A ^e,f,g  

^a CENTRAL RESEARCH INSTITUTE OF EPIDEMIOLOGY   (Russian Federation)

^b HARVARD UNIVERSITY   (United States)

^c HARVARD UNIVERSITY   (United States)

^d UNIVERSITY OF PENNSYLVANIA   (United States)

^e INSTITUTE FOR INFORMATION TRANSMISSION PROBLEMS   (Russian Federation)

^f MOSCOW STATE UNIVERSITY   (Russian Federation)

^g PIROGOV RUSSIAN NATIONAL RESEARCH MEDICAL UNIVERSITY   (Russian Federation)

Author keywords

[No Author keywords available]

Indexed keywords

HEMAGGLUTININ; MEMBRANE PROTEIN; OSELTAMIVIR; SIALIDASE; H1N1 VIRUS HEMAGGLUTININ; INFLUENZA VIRUS HEMAGGLUTININ;

ANTIVIRAL RESISTANCE; ARTICLE; CONTROLLED STUDY; COORDINATED EVOLUTION; EPISTASIS; FALSE POSITIVE RESULT; FOREGROUND GENE PHYLOGENY; GENE INTERACTION; GENE MAPPING; GENE MUTATION; GENE SEQUENCE; GENETIC REASSORTMENT; HA GENE; HITCHHIKER MUTATION; INFLUENZA A; INFLUENZA A VIRUS (H1N1); INFLUENZA A VIRUS (H3N2); INTER GENE EPISTASIS; INTRA GENE EPISTASIS; MOLECULAR EVOLUTION; MUTATIONAL ANALYSIS; NA GENE; NON SYNONYMOUS MUTATION; NONHUMAN; PHYLOGENY; PREVALENCE; SEQUENCE ANALYSIS; STRUCTURE ACTIVITY RELATION; SYNONYMOUS MUTATION; BIOLOGICAL MODEL; GENETIC SELECTION; GENETICS; INFLUENZA A VIRUS;

EPISTASIS, GENETIC; EVOLUTION, MOLECULAR; HEMAGGLUTININ GLYCOPROTEINS, INFLUENZA VIRUS; INFLUENZA A VIRUS; MODELS, GENETIC; NEURAMINIDASE; SELECTION, GENETIC;

EID: 84940773064     PISSN: 15537390     EISSN: 15537404     Source Type: Journal    
DOI: 10.1371/journal.pgen.1005404     Document Type: Article

References (86)

1. Palumbi SR, Humans as the world’s greatest evolutionary force. Science. 2001;293: 1786–1790. doi: 10.1126/science.293.5536.1786 11546863
2. Steinhauer DA, Holland JJ, Rapid evolution of RNA viruses. Annu Rev Microbiol. 1987;41: 409–433. doi: 10.1146/annurev.mi.41.100187.002205 3318675
3. Nobusawa E, Sato K, Comparison of the Mutation Rates of Human Influenza A and B Viruses. J Virol. 2006;80: 3675–3678. doi: 10.1128/JVI.80.7.3675-3678.2006 16537638
4. Nelson MI, Holmes EC, The evolution of epidemic influenza. Nat Rev Genet. 2007;8: 196–205. doi: 10.1038/nrg2053 17262054
5. Wilson DJ, Insights from Genomics into Bacterial Pathogen Populations. PLoS Pathog. 2012;8: e1002874. doi: 10.1371/journal.ppat.1002874 22969423
6. Maldarelli F, Kearney M, Palmer S, Stephens R, Mican J, Polis MA, et al. HIV Populations Are Large and Accumulate High Genetic Diversity in a Nonlinear Fashion. J Virol. 2013;87: 10313–10323. doi: 10.1128/JVI.01225-12 23678164
7. Wang X, Minasov G, Shoichet BK, Evolution of an antibiotic resistance enzyme constrained by stability and activity trade-offs. J Mol Biol. 2002;320: 85–95. doi: 10.1016/S0022-2836(02)00400-X 12079336
8. Bonhoeffer S, Chappey C, Parkin NT, Whitcomb JM, Petropoulos CJ, Evidence for positive epistasis in HIV-1. Science. 2004;306: 1547–1550. doi: 10.1126/science.1101786 15567861
9. Palmer AC, Kishony R, Understanding, predicting and manipulating the genotypic evolution of antibiotic resistance. Nat Rev Genet. 2013;14: 243–248. doi: 10.1038/nrg3351 23419278
10. Weinreich DM, Delaney NF, DePristo MA, Hartl DL, Darwinian Evolution Can Follow Only Very Few Mutational Paths to Fitter Proteins. Science. 2006;312: 111–114. doi: 10.1126/science.1123539 16601193
11. Schenk MF, Szendro IG, Salverda MLM, Krug J, de Visser JAGM, Patterns of Epistasis between Beneficial Mutations in an Antibiotic Resistance Gene. Mol Biol Evol. 2013;30: 1779–1787. doi: 10.1093/molbev/mst096 23676768
12. Salverda MLM, Dellus E, Gorter FA, Debets AJM, van der Oost J, Hoekstra RF, et al. Initial Mutations Direct Alternative Pathways of Protein Evolution. PLoS Genet. 2011;7: e1001321. doi: 10.1371/journal.pgen.1001321 21408208
13. Silva RF, Mendonça SCM, Carvalho LM, Reis AM, Gordo I, Trindade S, et al. Pervasive Sign Epistasis between Conjugative Plasmids and Drug-Resistance Chromosomal Mutations. PLoS Genet. 2011;7: e1002181. doi: 10.1371/journal.pgen.1002181 21829372
14. Lozovsky ER, Chookajorn T, Brown KM, Imwong M, Shaw PJ, Kamchonwongpaisan S, et al. Stepwise acquisition of pyrimethamine resistance in the malaria parasite. Proc Natl Acad Sci U S A. 2009;106: 12025–12030. doi: 10.1073/pnas.0905922106 19587242
15. Trindade S, Sousa A, Xavier KB, Dionisio F, Ferreira MG, Gordo I, Positive Epistasis Drives the Acquisition of Multidrug Resistance. Plos Genet. 2009;5: e1000578. doi: 10.1371/journal.pgen.1000578 19629166
16. Toprak E, Veres A, Michel J-B, Chait R, Hartl DL, Kishony R, Evolutionary paths to antibiotic resistance under dynamically sustained drug selection. Nat Genet. 2012;44: 101–U140. doi: 10.1038/ng.1034
17. Gong LI, Suchard MA, Bloom JD, Stability-mediated epistasis constrains the evolution of an influenza protein. eLife. 2013;2. doi: 10.7554/eLife.00631
18. Gong LI, Bloom JD, Epistatically Interacting Substitutions Are Enriched during Adaptive Protein Evolution. PLoS Genet. 2014;10: e1004328. doi: 10.1371/journal.pgen.1004328 24811236
19. Bloom JD, Gong LI, Baltimore D, Permissive secondary mutations enable the evolution of influenza oseltamivir resistance. Science. 2010;328: 1272–1275. doi: 10.1126/science.1187816 20522774
20. Hensley SE, Das SR, Bailey AL, Schmidt LM, Hickman HD, Jayaraman A, et al. Hemagglutinin Receptor Binding Avidity Drives Influenza A Virus Antigenic Drift. Science. 2009;326: 734–736. doi: 10.1126/science.1178258 19900932
21. Kryazhimskiy S, Dushoff J, Bazykin GA, Plotkin JB, Prevalence of epistasis in the evolution of influenza A surface proteins. PLoS Genet. 2011;7: e1001301. doi: 10.1371/journal.pgen.1001301 21390205
22. Wagner R, Wolff T, Herwig A, Pleschka S, Klenk HD, Interdependence of hemagglutinin glycosylation and neuraminidase as regulators of influenza virus growth: a study by reverse genetics. J Virol. 2000;74: 6316–6323. 10864641
23. Hensley SE, Das SR, Gibbs JS, Bailey AL, Schmidt LM, Bennink JR, et al. Influenza A virus hemagglutinin antibody escape promotes neuraminidase antigenic variation and drug resistance. PloS One. 2011;6: e15190. doi: 10.1371/journal.pone.0015190 21364978
24. Kaverin NV, Gambaryan AS, Bovin NV, Rudneva IA, Shilov AA, Khodova OM, et al. Postreassortment changes in influenza A virus hemagglutinin restoring HA-NA functional match. Virology. 1998;244: 315–321. doi: 10.1006/viro.1998.9119 9601502
25. Mitnaul LJ, Matrosovich MN, Castrucci MR, Tuzikov AB, Bovin NV, Kobasa D, et al. Balanced hemagglutinin and neuraminidase activities are critical for efficient replication of influenza A virus. J Virol. 2000;74: 6015–6020. 10846083
26. Wagner R, Matrosovich M, Klenk H-D, Functional balance between haemagglutinin and neuraminidase in influenza virus infections. Rev Med Virol. 2002;12: 159–166. doi: 10.1002/rmv.352 11987141
27. Duan S, Govorkova EA, Bahl J, Zaraket H, Baranovich T, Seiler P, et al. Epistatic interactions between neuraminidase mutations facilitated the emergence of the oseltamivir-resistant H1N1 influenza viruses. Nat Commun. 2014;5. doi: 10.1038/ncomms6029
28. Ward MJ, Lycett SJ, Avila D, Bollback JP, Brown AJL, Evolutionary interactions between haemagglutinin and neuraminidase in avian influenza. BMC Evol Biol. 2013;13: 222. doi: 10.1186/1471-2148-13-222 24103105
29. Neverov AD, Lezhnina KV, Kondrashov AS, Bazykin GA, Malik HS, Intrasubtype Reassortments Cause Adaptive Amino Acid Replacements in H3N2 Influenza Genes. PLoS Genet. 2014;10: e1004037. doi: 10.1371/journal.pgen.1004037 24415946
30. Bazykin GA, Dushoff J, Levin SA, Kondrashov AS, Bursts of nonsynonymous substitutions in HIV-1 evolution reveal instances of positive selection at conservative protein sites. Proc Natl Acad Sci. 2006;103: 19396–19401. doi: 10.1073/pnas.0609484103 17164328
31. Boni MF, de Jong MD, van Doorn HR, Holmes EC, Guidelines for identifying homologous recombination events in influenza A virus. PloS One. 2010;5: e10434. doi: 10.1371/journal.pone.0010434 20454662
32. Nagarajan N, Kingsford C, GiRaF: robust, computational identification of influenza reassortments via graph mining. Nucleic Acids Res. 2011;39: e34. doi: 10.1093/nar/gkq1232 21177643
33. Holmes EC, Ghedin E, Miller N, Taylor J, Bao Y, St George K, et al. Whole-genome analysis of human influenza A virus reveals multiple persistent lineages and reassortment among recent H3N2 viruses. PLoS Biol. 2005;3: e300. doi: 10.1371/journal.pbio.0030300 16026181
34. Nelson MI, Viboud C, Simonsen L, Bennett RT, Griesemer SB, St George K, et al. Multiple reassortment events in the evolutionary history of H1N1 influenza A virus since 1918. PLoS Pathog. 2008;4: e1000012. doi: 10.1371/journal.ppat.1000012 18463694
35. Plotkin JB, Dushoff J, Levin SA, Hemagglutinin sequence clusters and the antigenic evolution of influenza A virus. Proc Natl Acad Sci U S A. 2002;99: 6263–6268. doi: 10.1073/pnas.082110799 11972025
36. Smith DJ, Lapedes AS, de Jong JC, Bestebroer TM, Rimmelzwaan GF, Osterhaus ADME, et al. Mapping the Antigenic and Genetic Evolution of Influenza Virus. Science. 2004;305: 371–376. doi: 10.1126/science.1097211 15218094
37. Wolf YI, Viboud C, Holmes EC, Koonin EV, Lipman DJ, Long intervals of stasis punctuated by bursts of positive selection in the seasonal evolution of influenza A virus. Biol Direct. 2006;1: 34. doi: 10.1186/1745-6150-1-34 17067369
38. Strelkowa N, Lässig M, Clonal interference in the evolution of influenza. Genetics. 2012;192: 671–682. doi: 10.1534/genetics.112.143396 22851649
39. Illingworth CJR, Mustonen V, Components of Selection in the Evolution of the Influenza Virus: Linkage Effects Beat Inherent Selection. PLoS Pathog. 2012;8: e1003091. doi: 10.1371/journal.ppat.1003091 23300444
40. Lang GI, Rice DP, Hickman MJ, Sodergren E, Weinstock GM, Botstein D, et al. Pervasive genetic hitchhiking and clonal interference in forty evolving yeast populations. Nature. 2013;500: 571–574. doi: 10.1038/nature12344 23873039
41. Łuksza M, Lässig M, A predictive fitness model for influenza. Nature. 2014;507: 57–61. doi: 10.1038/nature13087 24572367
42. Wiley DC, Wilson IA, Skehel JJ, Structural identification of the antibody-binding sites of Hong Kong influenza haemagglutinin and their involvement in antigenic variation. Nature. 1981;289: 373–378. 6162101
43. Suzuki Y, Natural selection on the influenza virus genome. Mol Biol Evol. 2006;23: 1902–1911. doi: 10.1093/molbev/msl050 16818477
44. Air GM, Els MC, Brown LE, Laver WG, Webster RG, Location of antigenic sites on the three-dimensional structure of the influenza N2 virus neuraminidase. Virology. 1985;145: 237–248. 2411049
45. Gulati U, Hwang C-C, Venkatramani L, Gulati S, Stray SJ, Lee JT, et al. Antibody epitopes on the neuraminidase of a recent H3N2 influenza virus (A/Memphis/31/98). J Virol. 2002;76: 12274–12280. 12414967
46. Wan H, Gao J, Xu K, Chen H, Couzens LK, Rivers KH, et al. Molecular basis for broad neuraminidase immunity: conserved epitopes in seasonal and pandemic H1N1 as well as H5N1 influenza viruses. J Virol. 2013;87: 9290–9300. doi: 10.1128/JVI.01203-13 23785204
47. Lin YP, Xiong X, Wharton SA, Martin SR, Coombs PJ, Vachieri SG, et al. Evolution of the receptor binding properties of the influenza A(H3N2) hemagglutinin. Proc Natl Acad Sci. 2012;109: 21474–21479. doi: 10.1073/pnas.1218841110 23236176
48. Sun S, Wang Q, Zhao F, Chen W, Li Z, Sambhara S, Glycosylation Site Alteration in the Evolution of Influenza A (H1N1) Viruses. PLoS ONE. 2011;6: e22844. doi: 10.1371/journal.pone.0022844 21829533
49. Steinbrück L, McHardy AC, Ferguson N, Inference of Genotype–Phenotype Relationships in the Antigenic Evolution of Human Influenza A (H3N2) Viruses. PLoS Comput Biol. 2012;8: e1002492. doi: 10.1371/journal.pcbi.1002492 22532796
50. Koel BF, Burke DF, Bestebroer TM, van der Vliet S, Zondag GCM, Vervaet G, et al. Substitutions near the receptor binding site determine major antigenic change during influenza virus evolution. Science. 2013;342: 976–979. doi: 10.1126/science.1244730 24264991
51. Huang J-W, Lin W-F, Yang J-M, Antigenic sites of H1N1 influenza virus hemagglutinin revealed by natural isolates and inhibition assays. Vaccine. 2012;30: 6327–6337. doi: 10.1016/j.vaccine.2012.07.079 22885274
52. Rameix-Welti M-A, Enouf V, Cuvelier F, Jeannin P, van der Werf S, Manchester M, Enzymatic Properties of the Neuraminidase of Seasonal H1N1 Influenza Viruses Provide Insights for the Emergence of Natural Resistance to Oseltamivir. PLoS Pathog. 2008;4: e1000103. doi: 10.1371/journal.ppat.1000103 18654625
53. Li Q, Qi J, Zhang W, Vavricka CJ, Shi Y, Wei J, et al. The 2009 pandemic H1N1 neuraminidase N1 lacks the 150-cavity in its active site. Nat Struct Mol Biol. 2010;17: 1266–1268. doi: 10.1038/nsmb.1909 20852645
54. McKimm-Breschkin JL, Williams J, Barrett S, Jachno K, McDonald M, Mohr PG, et al. Reduced susceptibility to all neuraminidase inhibitors of influenza H1N1 viruses with haemagglutinin mutations and mutations in non-conserved residues of the neuraminidase. J Antimicrob Chemother. 2013;68: 2210–2221. doi: 10.1093/jac/dkt205 23759505
55. Myers JL, Hensley SE, Oseltamivir-resistant influenza viruses get by with a little help from permissive mutations. Expert Rev Anti Infect Ther. 2011;9: 385–388. doi: 10.1586/eri.11.2 21504394
56. Lee HK, Tang JW-T, Kong DH-L, Loh TP, Chiang DK-L, Lam TT-Y, Digard P, et al. Comparison of Mutation Patterns in Full-Genome A/H3N2 Influenza Sequences Obtained Directly from Clinical Samples and the Same Samples after a Single MDCK Passage. PLoS ONE. 2013;8: e79252. doi: 10.1371/journal.pone.0079252 24223916
57. Tamuri AU, dos Reis M, Hay AJ, Goldstein RA, Fraser C, Identifying Changes in Selective Constraints: Host Shifts in Influenza. PLoS Comput Biol. 2009;5: e1000564. doi: 10.1371/journal.pcbi.1000564 19911053
58. Kobayashi Y, Suzuki Y, Evidence for N-Glycan Shielding of Antigenic Sites during Evolution of Human Influenza A Virus Hemagglutinin. J Virol. 2012;86: 3446–3451. doi: 10.1128/JVI.06147-11 22258255
59. Tharakaraman K, Raman R, Stebbins NW, Viswanathan K, Sasisekharan V, Sasisekharan R, Antigenically intact hemagglutinin in circulating avian and swine influenza viruses and potential for H3N2 pandemic. Sci Rep. 2013;3. doi: 10.1038/srep01822
60. Bradley KC, Galloway SE, Lasanajak Y, Song X, Heimburg-Molinaro J, Yu H, et al. Analysis of Influenza Virus Hemagglutinin Receptor Binding Mutants with Limited Receptor Recognition Properties and Conditional Replication Characteristics. J Virol. 2011;85: 12387–12398. doi: 10.1128/JVI.05570-11 21917953
61. Ginting TE, Shinya K, Kyan Y, Makino A, Matsumoto N, Kaneda S, et al. Amino Acid Changes in Hemagglutinin Contribute to the Replication of Oseltamivir-Resistant H1N1 Influenza Viruses. J Virol. 2012;86: 121–127. doi: 10.1128/JVI.06085-11 22013054
62. Ernst AM, Zacherl S, Herrmann A, Hacke M, Nickel W, Wieland FT, et al. Differential transport of Influenza A neuraminidase signal anchor peptides to the plasma membrane. FEBS Lett. 2013;587: 1411–1417. doi: 10.1016/j.febslet.2013.03.019 23523923
63. Da Silva DV, Nordholm J, Madjo U, Pfeiffer A, Daniels R, Assembly of Subtype 1 Influenza Neuraminidase Is Driven by Both the Transmembrane and Head Domains. J Biol Chem. 2013;288: 644–653. doi: 10.1074/jbc.M112.424150 23150659
64. Capra EJ, Perchuk BS, Skerker JM, Laub MT, Adaptive mutations that prevent crosstalk enable the expansion of paralogous signaling protein families. Cell. 2012;150: 222–232. doi: 10.1016/j.cell.2012.05.033 22770222
65. Woods RJ, Barrick JE, Cooper TF, Shrestha U, Kauth MR, Lenski RE, Second-Order Selection for Evolvability in a Large Escherichia coli Population. Science. 2011;331: 1433–1436. doi: 10.1126/science.1198914 21415350
66. Blount ZD, Borland CZ, Lenski RE, Historical contingency and the evolution of a key innovation in an experimental population of Escherichia coli. Proc Natl Acad Sci. 2008;105: 7899–7906. doi: 10.1073/pnas.0803151105 18524956
67. Bao Y, Bolotov P, Dernovoy D, Kiryutin B, Zaslavsky L, Tatusova T, et al. The influenza virus resource at the National Center for Biotechnology Information. J Virol. 2008;82: 596–601. doi: 10.1128/JVI.02005-07 17942553
68. Edgar RC, MUSCLE: multiple sequence alignment with high accuracy and high throughput. Nucleic Acids Res. 2004;32: 1792–1797. doi: 10.1093/nar/gkh340 15034147
69. Edgar RC, MUSCLE: a multiple sequence alignment method with reduced time and space complexity. BMC Bioinformatics. 2004;5: 113. doi: 10.1186/1471-2105-5-113 15318951
70. Suyama M, Torrents D, Bork P, PAL2NAL: robust conversion of protein sequence alignments into the corresponding codon alignments. Nucleic Acids Res. 2006;34: W609–612. doi: 10.1093/nar/gkl315 16845082
71. Gaydos JC, Top FH, Hodder RA, Russell PK, Swine Influenza A Outbreak, Fort Dix, New Jersey, 1976. Emerg Infect Dis. 2006;12: 23–28. doi: 10.3201/eid1201.050965 16494712
72. Han L, Lu W, Han Y, Li S, Yin J, Xie J, et al. Evolutionary characteristics of swine-origin H1N1 influenza virus that infected humans from sporadic to pandemic. J Public Health and Epidemiology. 2011;3: 254–270.
73. Influenza virus surveillance in Switzerland season 2010–2011 [Internet]. National Reference Influenza Center Laboratory of Virology University of Geneva Hospitals and Faculty of Medicine Geneva, Switzerland; 2011. Available: http://virologie.hug-ge.ch/_library/pdf/Flu2011.pdf
74. Olsen CW, Karasin AI, Carman S, Li Y, Bastien N, Ojkic D, et al. Triple reassortant H3N2 influenza A viruses, Canada, 2005. Emerg Infect Dis. 2006;12: 1132–1135. doi: 10.3201/eid1207.060268 16836834
75. Li W, Godzik A, Cd-hit: a fast program for clustering and comparing large sets of protein or nucleotide sequences. Bioinforma Oxf Engl. 2006;22: 1658–1659. doi: 10.1093/bioinformatics/btl158
76. Huelsenbeck JP, Ronquist F, MRBAYES: Bayesian inference of phylogenetic trees. Bioinforma Oxf Engl. 2001;17: 754–755.
77. Guindon S, Delsuc F, Dufayard J-F, Gascuel O, Estimating maximum likelihood phylogenies with PhyML. Methods Mol Biol Clifton NJ. 2009;537: 113–137. doi: 10.1007/978-1-59745-251-9_6
78. Pond SLK, Frost SDW, Muse SV, HyPhy: hypothesis testing using phylogenies. Bioinforma Oxf Engl. 2005;21: 676–679. doi: 10.1093/bioinformatics/bti079
79. Dutheil J, Gaillard S, Bazin E, Glémin S, Ranwez V, Galtier N, et al. Bio++: a set of C++ libraries for sequence analysis, phylogenetics, molecular evolution and population genetics. BMC Bioinformatics. 2006;7: 188. doi: 10.1186/1471-2105-7-188 16594991
80. Guéguen L, Gaillard S, Boussau B, Gouy M, Groussin M, Rochette NC, et al. Bio++: efficient extensible libraries and tools for computational molecular evolution. Mol Biol Evol. 2013;30: 1745–1750. doi: 10.1093/molbev/mst097 23699471
81. Vos RA, Caravas J, Hartmann K, Jensen MA, Miller C, BIO::Phylo-phyloinformatic analysis using perl. BMC Bioinformatics. 2011;12: 63. doi: 10.1186/1471-2105-12-63 21352572
82. Pond SLK, Frost SDW, Grossman Z, Gravenor MB, Richman DD, Brown AJL, Adaptation to different human populations by HIV-1 revealed by codon-based analyses. PLoS Comput Biol. 2006;2: e62. doi: 10.1371/journal.pcbi.0020062 16789820
83. Murrell B, Wertheim JO, Moola S, Weighill T, Scheffler K, Kosakovsky Pond SL, Malik HS, Detecting Individual Sites Subject to Episodic Diversifying Selection. PLoS Genet. 2012;8: e1002764. doi: 10.1371/journal.pgen.1002764 22807683
84. Delport W, Poon AFY, Frost SDW, Kosakovsky Pond SL, Datamonkey 2010: a suite of phylogenetic analysis tools for evolutionary biology. Bioinforma Oxf Engl. 2010;26: 2455–2457. doi: 10.1093/bioinformatics/btq429
85. Pond SLK, Frost SDW, Datamonkey: rapid detection of selective pressure on individual sites of codon alignments. Bioinforma Oxf Engl. 2005;21: 2531–2533. doi: 10.1093/bioinformatics/bti320
86. Rambaut A, Drummond AJ. FigTree version 1.4 [Internet]. 2012. Available: tree.bio.ed.ac.uk/software/figtree