Two novel cDNAs for two different genes, HDT1 and HDT2, are isolated from red clover and sequenced. Both HDT1 and HDT2 encode hydroxycinnamoyl-CoA:L-DOPA/tyrosine hydroxycinnamoyl transferase (HDT) which enzymatically produces clovamide and/or related hydroxycinnamoyl amides. Clovamide and related hydroxycinnamoyl amides reduce post-harvest protein degradation. Genetically altered alfalfa plants containing an expression cassette containing a cDNA encoding HDT1 or HDT2 are generated. These genetically altered alfalfa plants produce hydroxycinnamoyl-CoA:L-DOPA/tyrosine hydroxycinnamoyl transferase, which in turn produces clovamide and/or related hydroxycinnamoyl amides.
从红三叶中分离出两个不同
基因 HDT1 和 HDT2 的新型 cDNA,并对其进行了测序。HDT1 和 HDT2 都编码羟基肉桂酰-CoA:L-
DOPA/
酪氨酸羟基肉桂酰转移酶(HDT),它能酶促产生
氯酰胺和/或相关的羟基肉桂酰酰胺。
氯酰胺和相关的羟基肉桂酰酰胺可减少收获后蛋白质的降解。
基因改变的苜蓿植株含有一个表达盒,其中包含编码 HDT1 或 HDT2 的 cDNA。这些
基因改变的苜蓿植物会产生羟基肉桂酰-CoA:L-
DOPA/
酪氨酸羟基肉桂酰转移酶,进而产生
氯酰胺和/或相关的羟基肉桂酰酰胺。