1. Two clones expressing endo-1,4-beta-xylanase activity were isolated and one clone designated UMXYL2 was characterized by subcloning and sequencing. 6×10~8bp,筛选得到2个表达内切-1,4-β-木聚糖酶活性的克隆。2) cellulase Cex 内切-β-1,4-木聚糖酶...