Nse4 is the kleisin component of the Smc5/6 DNA repair complex. It bridges the heads of Smc5 and Smc6 [1,2,3,4]. This is the C-terminal domain of Nse4 that interacts with the head domain of Smc5 [4].

1: Qri2/Nse4, a component of the essential Smc5/6 DNA repair complex. Hu B, Liao C, Millson SH, Mollapour M, Prodromou C, Pearl LH, Piper PW, Panaretou B; Mol Microbiol. 2005;55:1735-1750. PMID:15752197

2: Nse1, Nse2, and a novel subunit of the Smc5-Smc6 complex, Nse3, play a crucial role in meiosis. Pebernard S, McDonald WH, Pavlova Y, Yates JR 3rd, Boddy MN; Mol Biol Cell. 2004;15:4866-4876. PMID:15331764

3: Analysis of the Nse3/MAGE-binding domain of the Nse4/EID family proteins. Guerineau M, Kriz Z, Kozakova L, Bednarova K, Janos P, Palecek J; PLoS One. 2012;7:e35813. PMID:22536443

4: The Smc5-Smc6 DNA repair complex. bridging of the Smc5-Smc6 heads by the KLEISIN, Nse4, and non-Kleisin subunits. Palecek J, Vidot S, Feng M, Doherty AJ, Lehmann AR; J Biol Chem. 2006;281:36952-36959. PMID:17005570