a low enzyme concentration of camp phosphodiesterase yielded a linear lineweaver-burk plot , and a km of 1.2 x 10 ( -4 ) m ( bovine ) , 3 x 10 ( -5 ) m ( platelet ) , or 5 x 10 ( -4 ) m ( liver ) , while a high enzyme concentration yielded a nonlinear plot , and apparent km values of 1.4 x 10 ( -4 ) m and 2 x 10 ( -5 ) m ( brain ) , 4 x 10 ( -5 ) m and 3 x 10 ( -6 ) m ( platelet ) , or 4 x 10 ( -5 ) m and 3 x 10 ( -6 ) ( liver ) .
C0086045
concentration
C0006104
brain