This family of proteins found in plants and cyanobacteria has no known function. The structure of this domain has been solved by NMR for the alr2454 protein [1]. The structure was determined to be a novel fold composed of four alpha helices and a sheet of three anti-parallel beta-strands.

1: Solution NMR structure of Alr2454 from Nostoc sp. PCC 7120, the first structural representative of Pfam domain family PF11267. Aramini JM, Petrey D, Lee DY, Janjua H, Xiao R, Acton TB, Everett JK, Montelione GT; J Struct Funct Genomics. 2012;13:171-176. PMID:22592539