PGBD3 Full-Length MS Protein Standard (NP_736609), Labeled with [U- 13C6, 15N4]-L-Arginine and [U- 13C6, 15N2]-L-Lysine, was produced in human 293 cells (HEK293) with fully chemically defined cell culture medium to obtain incorporation efficiency at Creative-Proteomics. This gene is a member of a small family of genes derived from piggyBac transposable elements. The encoded protein contains a zinc-ribbon domain characteristic of transposon-derived proteins and may function as a regulator of transcription. Naturally-occurring readthrough transcription occurs between this gene and the adjacent ERCC6 gene (GeneID 2074), and results in a fusion protein that shares sequence with the product of each individual gene. The readthrough locus is represented by GeneID:101243544. There are several pseudogenes for this gene on chromosomes 4, 5 and 12.