Welcome to ICRP2022

November 5, 2022


Thank you for your attending ICRP2022, which made a great conference.




Hideki and Akihisa


October 26, 2022


All abstracts of oral and poster presentations are now open. Please login and visit “Program/Sessions”.



October 20, 2022

Dear Participants of ICRP2022,


After the 3-times postponements, we finally have ICRP in Sapporo.

We look forward to discussing on retinal proteins together with you.

Have a safe trip to Sapporo.

See you soon!


Hideki Kandori and Akihisa Terakita



July 22, 2022

Dear Participants from abroad,


To enter Japan, Visa and Certificate of inspection for COVID-19 are needed. Please check "Entering Japan" in the pulldown menu.




June 17, 2022

Dear Retinal Protein Researchers,


We are happy to announce the opening of the registration for the ICRP2022 in Sapporo.

We hope to see you in Sapporo soon.


Hideki Kandori and Akihisa Terakita




May 12, 2021

Dear Retinal Protein Researchers,


We postponed ICRP2020 twice, but the unfortunate situation with COVID-19 continues to affect our planning.

Following the approval of the Local Organizing Committee and the International Advisory Committee, we decided to postpone the conference once again, and will organize next ICRP on Oct. 30 - Nov. 4, 2022.

The venue is changed from Ise-Shima to Hokkaido, at Royton Sapporo.

As we already have extra costs from the two years of postponement, we have to reconsider the budget. Therefore, the support for invited chairs/speakers may be reduced.

Detailed information about ICRP2022 in Sapporo will be announced on this conference website.

We hope to see you in Sapporo in the autumn of 2022.


Hideki Kandori and Akihisa Terakita



September 11, 2020






Due to the unpredictable situation with the novel coronavirus, International Advisory Committee Members discussed ICRP 2020 (planned to be held in Japan) and decided to postpone it until 2021.

As a consequence, even though ICRPs have been organized in even years until now, from now on, ICRPs will be held in odd year.

The next ICRP is planned for November 7 (Sun) to 12 (Fri), 2021, the location is unchanged.



March 13, 2020

Because of a very unpredictable situation regarding coronavirus,

ICRP2020 is postponed to November 1-6, 2020. 

Detailed information will be updated in the website.



Early-Bird Registration Deadline Extended: March 31, 2020

The deadline for early-bird registration has been extended from February 28 to March 31. We are now in a very unpredictable situation regarding coronavirus, but we believe better situation in spring.

# 1 : If you wish to apply for oral presentation at ICRP2020, please complete your abstract by March 31. (Please see the registration page for details.)

#2 :  If you wish to apply for oral presentation at Satellite symposium (May 28-29), please register before March 31 and indicate your request on the registration for the Satellite Workshop web-page.


Registration is open on January 31, 2020

Early-Bird Registration Deadline: February 28, 2020

# If you wish to apply for oral presentation at ICRP2020 and/or Satellite symposium (May 28-29), please register before February 28 and indicate your request on the registration web-page.

Abstract Submission Deadline: April 20, 2020



July 6, 2019

Welcome to the 19th International Conference on Retinal Proteins





Dear Colleagues,


On behalf of the Committee members of the International Conference on Retinal Proteins (ICRP), we would like to cordially invite you to attend the 19th International Conference on Retinal Proteins (ICRP2020) in Ise-Shima, Japan, from June 1 to 6, 2020.


Retinal proteins contain a retinal molecule in their protein moieties that responds to light. They are diverse and versatile proteins found throughout the natural world, from humans to bacteria and viruses. They function as photoreceptor proteins mediating visual and non-visual photic functions, light-activated ion pumps, channels, sensors, and enzymes in microorganisms. The ICRP was established in 1984 as the only international conference to comprehensively address retinal proteins. Since then, the conference has been held every two years at different venues around the world. Following the success of ICRP2018 held in Canada, ICRP2020 was planned in Japan. The coming ICRP is the 5th ICRP to be held in Japan.


The main objective of this conference is to share the latest research on the diverse aspects of retinal proteins. These include crystallographic and spectroscopic studies of protein structure and dynamics, genetic, biochemical and physiological studies of protein function, signal transduction and energy transduction mechanisms. In addition, retinal proteins are actively used in other research applications. For example, retinal proteins are used as a tool in optogenetics, a technique that allows us to control the activity of specific neurons and animal behavior by light.


Ise-Shima area is located at the center of Japan. Ise City is home to the Ise Jingu (Ise Shrine), which is dedicated to the ancestral kami (Amaterasu-Omikami) of the Imperial family. It is thus one of the most sacred places in Japan. Shima City faces Ise Bay of the Pacific Ocean, famous for oyster and pearl cultivation. Due to the delicious gourmet food of the area, it is widely known as the “province of eating”. Thank you for considering travelling to Japan to attend the ICRP2020 in Ise-Shima.

With my best regards,

Hideki Kandori and Akihisa Terakita

Chairs of ICRP2020