ISOLAB’05 (in Niigata (Toki Messe), Japan, on from June 27- to July 2, 2005) Nuclease Activity of [GADV]-Peptides. -from “[GADV]-protein world” to “RNA- protein world”-（Poster Presentation）Kenji Ikehara, Takae Oba, Jun Fukushima, and Ryoko Iwamoto
ISOLAB’05 (in Niigata (Toki Messe), Japan, on from June 27- to July 2, 2005) Symposium 10 “Complex Biotic and Genetic Systems”. (Chairs: K. Ohnishi and K. Ikehara) The [GADV]-protein world hypothesis on the origin of life (Oral Presentation) Kenji Ikehara
Zing Research Conferences –Nucleic Acid Conference- (From February 22 – 25, 2009) Kenji Ikehara and Asami Takahira, Direct Evidence for GC-NSF(a) hypothesis on Creation of New Original Ancestor Genes (Poster Presentation). At Playa del Carmen, Mexico.
Zing Research Conferences –Nucleic Acid Conference- (From February 22 – 25, 2009) Kenji Ikehara, Takae Oba, Jun Fukushima and Tadashi Oishi, RNase Activity of [GADV]-Peptides and [GADV]-Protein World Hypothesis on the Origin of Life (Poster Presentation). At Playa del Carmen, Mexico.
Gordon Research Conference on the Origin of Life (from Jan. 10 to Jan. 15, 2010) Kenji Ikehara –[GADV]-Protein World hypothesis on the Origin of Life (Poster Presentation). At Hotel Galvez, Galvestion, Texas, USA
Zing Research Conferences –Nucleic Acid Conference- (From November 10–13, 2010) Kenji Ikehara and Tadashi Oishi, Origin of Entirely New Genes and GADV Hypothesis on the Origin of Life (Poster Presentation). At Ocean Coral, Puerto Morelos, Mexico.
Origins 2011（ISSOL and Bioastronomy Joint International Conference）(Le Corum, Montpellier, France: July 3rd-8th, 2011（Poster Presentation: Protein 0th-order Structure for the Origin of Life）Kenji Ikehara (Nara Study Center, The Open University of Japan) and Tadashi Oishi (Nara-saho College)
SEB-2012（Xi’an, China: April 25-28）On April 26. SEB 100: New Enzyme Discovery and Activity Optimizations（Chairs Introduction）Kenji Ikehara(Nara Study Center, The Open University of Japan; International Institute for Advanced Studies)
SEB-2012（Xi’an, China: April 25-28）（Oral Presentation）On April 26.（SEB 100: New Enzyme Discovery and Activity Optimizations）Title: Creation and Development of Entirely New Enzymes. Kenji Ikehara (Nara Study Center, The Open University, Japan; Fellow, International Institute for Advanced Studies, Japan)
WCBBS 2013 (Dar es Salaam, Tanzania: September 23-27) (Oral Presentation) On September 24: Principle of Entirely New Enzyme Formation. Kenji Ikehara (Nara Study Center, The Open University, Japan; Fellow, International Institute for Advanced Studies, Japan)
OQOL 2014 (International Institute for Advanced Studies, Kizugawa-shi, Kyoto, Japan: July 12-13, 2014) (Oral presentation on July 13: [GADV]-protein world hypothesis on the origin of life. Kenji Ikehara, (Nara Study Center, The Open University, Japan; Fellow, International Institute for Advanced Studies, Japan)
OQOL 2014 (International Institute for Advanced Studies, Kizugawa-shi, Kyoto, Japan: July 12-13, 2014) (Poster presentation on July 12-13: Protein ordered sequences are formed by random joining of amino acids in protein 0th-order structure, followed by evolutionary process. Kenji Ikehara, (Nara Study Center, The Open University, Japan; Fellow, International Institute for Advanced Studies, Japan)
