SVIP, small VCP/p97-interacting protein, is a family of proteins found in eukaryotes. SVIP was identified by yeast two-hybrid screening to be an interactive partner of VCP/p97. Mammalian VCP/p97 and its yeast counterpart Cdc48p participate in the formation of organelles, including the endoplasmic reticulum (ER), Golgi apparatus, and nuclear envelope. Over-expression of SVIP caused the formation of large vacuoles that seemed to be derived from the ER [1]. The family has two putative coiled-coil regions and contains proteins of approximately 80 amino acids in length.

1: SVIP is a novel VCP/p97-interacting protein whose expression causes cell vacuolation. Nagahama M, Suzuki M, Hamada Y, Hatsuzawa K, Tani K, Yamamoto A, Tagaya M; Mol Biol Cell. 2003;14:262-273. PMID:12529442