Robertson, H.M. (2004). Genes encoding vitamin-K epoxide reductase are present in Drosophila and trypanosomatid protists.  Genetics 168(2): 1077--1080.

FBrf0180274

Research paper

Vitamin-K epoxide reductase is encoded by the VKORC1 gene in mammals and other vertebrates, which also have a paralog, VKORC1L1. Single homologs are present in basal deuterostome and insect genomes, including Drosophila, and three trypanosomatid protists. VKOR is therefore an ancient gene/protein that can be studied in the Drosophila model system.

PMC1448852 (PMC) (EuropePMC)