The MIT domain forms an asymmetric three-helix bundle [3] and binds ESCRT-III (endosomal sorting complexes required for transport) substrates [2].

1: Identification and characterization of SNX15, a novel sorting nexin involved in protein trafficking. Phillips SA, Barr VA, Haft DH, Taylor SI, Haft CR; J Biol Chem 2001;276:5074-5084. PMID:11085978

2: Structural and mechanistic studies of VPS4 proteins. Scott A, Chung HY, Gonciarz-Swiatek M, Hill GC, Whitby FG, Gaspar J, Holton JM, Viswanathan R, Ghaffarian S, Hill CP, Sundquist WI; EMBO J. 2005;24:3658-3669. PMID:16193069

3: Structure and ESCRT-III protein interactions of the MIT domain of human VPS4A. Scott A, Gaspar J, Stuchell-Brereton MD, Alam SL, Skalicky JJ, Sundquist WI; Proc Natl Acad Sci U S A. 2005;102:13813-13818. PMID:16174732