- Two homologous genes, DCW1 (YKL046c) and DFG5, are essential for cell growth and encode glycosylphosphatidylinositol (GPI)-anchored membrane proteins required for cell wall biogenesis in Saccharomyces cerevisiae. Kitagaki, H., Wu, H., Shimoi, H., Ito, K. Mol. Microbiol. (2002)