This domain is found in a group of prokaryotic proteins, including Alpha-aminoadipate carrier protein LysW from Thermus thermophilus. LysW is an amino group-carrier protein that plays an important role in lysine biosynthesis. This globular domain is composed of five beta-strands and adopts a similar structure to members of the zinc ribbon superfamily. It is responsible for the binding of a zinc atom [1-5].

1: Structure of Aart, a designed six-finger zinc finger peptide, bound to DNA. Segal DJ, Crotty JW, Bhakta MS, Barbas CF 3rd, Horton NC; J Mol Biol. 2006;363:405-421. PMID:16963084

2: Lysine and arginine biosyntheses mediated by a common carrier protein in Sulfolobus. Ouchi T, Tomita T, Horie A, Yoshida A, Takahashi K, Nishida H, Lassak K, Taka H, Mineki R, Fujimura T, Kosono S, Nishiyama C, Masui R, Kuramitsu S, Albers SV, Kuzuyama T, Nishiyama M; Nat Chem Biol. 2013;9:277-283. PMID:23434852

3: Structural insight into amino group-carrier protein-mediated lysine biosynthesis: crystal structure of the LysZ.LysW complex from Thermus thermophilus. Yoshida A, Tomita T, Fujimura T, Nishiyama C, Kuzuyama T, Nishiyama M; J Biol Chem. 2015;290:435-447. PMID:25392000

4: Crystal Structure of the LysY.LysW Complex from Thermus thermophilus. Shimizu T, Tomita T, Kuzuyama T, Nishiyama M; J Biol Chem. 2016;291:9948-9959. PMID:26966182

5: Lysine Biosynthesis of Thermococcus kodakarensis with the Capacity to Function as an Ornithine Biosynthetic System. Yoshida A, Tomita T, Atomi H, Kuzuyama T, Nishiyama M; J Biol Chem. 2016;291:21630-21643. PMID:27566549