The E protein in Zika virus is mutated and very different from the envelop protein of other flaviviruses such as dengue, West Nilevirus, yellow fever and Japanese encephalitis.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/nbrc-researchers-decipher-how-zika-virus-causes-microcephaly
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/zika-virus
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/medical-research
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/indian-institute-technology-iit
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health