The CD316/IGSF8 protein plays a key role in multiple functions related to CD81 and CD9, affecting processes such as oocyte fertilization, hepatitis C virus function, and the regulation of keratinocyte proliferation and differentiation. CD316/IGSF8 Protein, Human (HEK293, His) is the recombinant human-derived CD316/IGSF8 protein, expressed by HEK293 , with C-6*His labeled tag.