Proteins in this entry contain a UBR-type zinc finger, and include the putative E3 ubiquitin-protein ligase UBR7, which is found in mammalian spermatozoa, particularly the acrosomal cap and sperm acrosome []. Homologues are found in plants and fungi, including the uncharacterised protein Mlo2 from fission yeasts. Both UBR7 and Mlo2 also contain a PHD-type zinc finger.