The Protein Science Society of Japan (PSSJ) is a general incorporated association that promotes scientific research on proteins. Its scope encompasses protein function, structure, stability, folding, production, and purification, as well as applications in pharmaceuticals, food, and materials. The society supports researchers and members through annual meetings, workshops, a foundational protein science course, and activities for early-career scientists.

It also publishes the PSSJ Newsletter and provides access to the PRC newsletter and a protein science archive. Members can use online services for membership information, procedures, and annual dues, while supporting corporate members can share information about their products. PSSJ coordinates awards and presentation-related services, including documentation for patent applications, and accepts applications for co-hosting, endorsing, or sponsoring events.

Its annual meetings bring together the protein science community; upcoming and recent gatherings are listed on the society’s website. PSSJ also shares research funding opportunities, scientific events, and news from related organizations, and maintains links with domestic and international scientific societies