ICE2 is a fungal ER protein which has been shown to play an important role in forming/maintaining the cortical ER [1]. It has also bee identified as a protein which is necessary for nuclear inner membrane targeting [2].

1: Ice2p is important for the distribution and structure of the cortical ER network in Saccharomyces cerevisiae. Estrada de Martin P, Du Y, Novick P, Ferro-Novick S; J Cell Sci 2005;118:65-77. PMID:15585575

2: Genome-wide Screen for Inner Nuclear Membrane Protein Targeting in Saccharomyces cerevisiae: Roles for N-acetylation and an Integral Membrane Protein. Murthi A, Hopper AK; Genetics 2005; [Epub ahead of print] PMID:15911569