granulocyte membrane pemt has km for s-adenosylmethionine of 4.4 microm and specific activity 0.54 +/- 0.51 pmol/mg protein/15 min , is inhibited by s-adenosylhomocysteine , displays optimal activity at ph 8.0-9.5 , and is stimulated by isoproterenol greater than epinephrine greater than norepinephrine , but not by prostaglandin e1 , serum-treated zymosan , formyl-methionyl-leucyl-phenylalanine , or adenosine 3':5 ' cyclic monophosphate .
C0036002
s-adenosylmethionine
C0001443
adenosine