Figure 1.
A. Structures of VK1, VK2, and VK3. VK3 is a pro-vitamin, and UBIAD1 converts VK3 or cleaved VK1 into VK2 in situ through geranylgeranylation. Defects in UBIAD1 have been shown to be a dominant enhancer of Parkinson’s related PINK1 mutations. B. Experimental flow. Synthetic approach and selective criteria used to generate more potent and non-toxic VK analogs.