This domain is found in Baseplate wedge protein gp6 from Enterobacteria phage T4 and similar sequences predominantly from tailed bacteriophages. Gp6 is a protein involved in tail assembly. This entry represents its N-terminal helical domain [1].

1: Role of bacteriophage T4 baseplate in regulating assembly and infection. Yap ML, Klose T, Arisaka F, Speir JA, Veesler D, Fokine A, Rossmann MG; Proc Natl Acad Sci U S A. 2016;113:2654-2659. PMID:26929357