PurposePlasmid pOJ260 is an integrative cloning vector commonly used in actinomycetes such as *Streptomyces*. Its applications include gene expression and functional studies in actinomycetes like *Streptomyces*; cloning and heterologous expression of biosynthetic gene clusters for secondary metabolites (e.g., antibiotics); and achieving single-copy or multi-copy gene integration using the φC31 integration system.