Antibiotics are widely used for clinical treatment and preventing or curing diseases in agriculture. Cloning and studies of their biosynthetic gene clusters are vital for yield enhancement and engineering new derivatives with new and prominent activities. In recent years, research in this aspect is impressively active in China. This article reviews biosynthetic progress on 28 antibiotics, including polyketides, nonribosomal peptides, hybrid polyketide-nonribosomal peptides, peptidyl nucleoside, nucleoside, and others. Their biosynthetic mechanisms were disclosed, and their derivatives with new structures/activities were obtained by gene inactivation, mutasynthesis and combinatorial biosynthesis.
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