ZW10 interactor (also known as Zwint-1) is part of the MIS12 complex, which is required for kinetochore formation and spindle checkpoint activity [1]. It recruits ZW10 to unattached kinetochores at prometaphase [2]. It is essential for stable binding of a Mad1-Mad2 complex to unattached kinetochores [3]. It can be phosphoryltated by Aurora B (AurB) kinase [4].

1: HZwint-1, a novel human kinetochore component that interacts with HZW10. Starr DA, Saffery R, Li Z, Simpson AE, Choo KH, Yen TJ, Goldberg ML; J Cell Sci. 2000;113:1939-1950. PMID:10806105

2: Human Zwint-1 specifies localization of Zeste White 10 to kinetochores and is essential for mitotic checkpoint signaling. Wang H, Hu X, Ding X, Dou Z, Yang Z, Shaw AW, Teng M, Cleveland DW, Goldberg ML, Niu L, Yao X; J Biol Chem. 2004;279:54590-54598. PMID:15485811

3: Hec1 sequentially recruits Zwint-1 and ZW10 to kinetochores for faithful chromosome segregation and spindle checkpoint control. Lin YT, Chen Y, Wu G, Lee WH; Oncogene. 2006;25:6901-6914. PMID:16732327

4: ZW10 links mitotic checkpoint signaling to the structural kinetochore. Kops GJ, Kim Y, Weaver BA, Mao Y, McLeod I, Yates JR 3rd, Tagaya M, Cleveland DW; J Cell Biol. 2005;169:49-60. PMID:15824131

5: Zwint-1 is a novel Aurora B substrate required for the assembly of a dynein-binding platform on kinetochores. Kasuboski JM, Bader JR, Vaughan PS, Tauhata SB, Winding M, Morrissey MA, Joyce MV, Boggess W, Vos L, Chan GK, Hinchcliffe EH, Vaughan KT; Mol Biol Cell. 2011;22:3318-3330. PMID:21775627