The present invention provides a Diels-Alderase and use thereof, and belongs to the field of gene engineering technology. The Diels-Alderase is MaDA, and its amino acid sequence and gene sequence are represented by SEQ ID Nos. 1 and 2, respectively. The present invention also provides MaDA-1 and MaDA-2, both of which are homologous proteins of MaDA, and their amino acid sequences are represented by SEQ ID Nos. 10 and 12, respectively. The present invention has discovered that MaDA and its homologous proteins from Morus alba can stereospecifically synthesize natural products of endo configuration, and prepare D-A type natural products and their analogs in vitro using chalcones and dehydroprenyl-containing compounds as substrates, which helps to develop and utilize the medicinal value of such natural products, and also provides a possibility to synthesize other six-membered ring-containing important chemical precursors or natural products.
本发明提供了一种 Diels-Aldera
SE 及其用途,属于
基因工程技术领域。该 Diels-Aldera
SE 为 Ma
DA,其
氨基酸序列和
基因序列分别由
SEQ ID 编号 1 和 2 表示。本发明还提供了 MaDA-1 和 Ma
DA-2,它们都是 Ma
DA 的同源蛋白,其
氨基酸序列分别由
SEQ ID 编号 10 和 12 表示。本发明发现,桑白皮中的Ma
DA及其同源蛋白可以立体定向合成内构型
天然产物,并以
查耳酮和含脱氢
丙烯基化合物为底物,体外制备D-A型
天然产物及其类似物,有助于开发和利用此类
天然产物的药用价值,同时也为合成其他含六元环的重要
化学前体或
天然产物提供了可能。