Plasmid pGA11 for cell surface display of R. oryzae glucoamylase
was constructed as described previously in Ref. [5]. To amplify
a DNA fragment between glyceraldehydes-3-phosphate dehydrogenase
(GAPDH) promoter and GAPDH terminator containing the
coding region of the glucoamylase with the 30 half of a-agglutinin
gene, two primers containing artificial SphI and Sse837 I sites
(underlined) (50-ACATGCATGCACCAGTTCTCACACGGAACA-30 and
50-TCCTGCAGGTCAATCAATGAATCG AAAATG-30) were designed and
a 4.3-kbp fragment was amplified by PCR using Ex Taq polymerase
(TaKaRa). The amplified fragments were digested with the cognate
restriction enzymes and inserted between the SphI and Sse837 I
sites of pAUR101 (TaKaRa) to generate pAU101RGA. To integrate
pAU101RGA into the S. cerevisiae K7 genomic DNA, the plasmid was
digested with StuI to generate a linear DNA fragment. This DNA
fragment was transformed into the strain K7 by the lithium acetate
method following manufacturer’s instructions (TaKaRa). Transformants
were obtained on YPD plates containing 1.0 mg/ml Aureobasidin
A (TaKaRa).