Table 1.

Oligonucleotide primers used for the construction of the fusion enzymes

Primer	Sequence (5′→3′)a
P1	CGGGATCCGTCACCCGATACGAGCGTGGACA
P2	CGGACCACCACTGGACCCCGTCAGTACATTGAAGCTTTTG
P3	CGGACCACCACTGGAATTTTGCCAGTCCACCGTCACC
P4	TCCAGTGGTGGTCCGCAGC
P5	CCGCTCGAGGCCACCATTAAAACTGGGATGC

^aThe underlined letters denote the coding sequences of the restriction endonuclease sites; 15-bp segments of the overlapping regions are in boldface and underlined.