Original Research Published on 06 May 2016 Diversity and Evolution of Type IV pili Systems in Archaea in Evolutionary and Genomic Microbiology Kira S. MakarovaEugene V. KooninSonja-Verena Albers Frontiers in Microbiology doi 10.3389/fmicb.2016.00667 13,814 views 109 citations