BPKS from Botrytis cinerea is a novel type III polyketide synthase that accepts C4–C18 aliphatic acyl-CoAs and benzoyl-CoA as the starters to form pyrones, resorcylic acids and resorcinols through sequential condensation with malonyl-CoA. The catalytic efficiency (kcat/Km) of BPKS was 2.8 × 105 s−1 M−1 for palmitoyl-CoA, the highest ever reported. Substrate docking analyses addressed the unique features of BPKS such as its high activity and high specificity toward long chain acyl-CoAs.
葡萄孢菌(Botrytis cinerea)中的BPKS是一种新型III型聚酮合酶,能够接受C4-C18的脂肪酰
辅酶A和苯甲酰
辅酶A作为起始物,通过与丙二酰
辅酶A的连续缩合反应形成
吡喃酮、
间苯二酚酸和
间苯二酚。BPKS对棕榈酰
辅酶A的催化效率(kcat/Km)高达2.8 × 10^5 s^-1 M^-1,是有史以来报道的最高值。底物对接分析揭示了BPKS独特的特性,如其对长链酰基
辅酶A的高活性和高特异性。