LTC4S GI:22035629 leukotriene C4 synthase 1 mkdevallaa vtllgvllqa yfslqvisar rafrvspplt tgppefervy 50 51 raqvncseyf plflatlwva giffhegaaa lcglvylfar lryfqgyars 100 101 aqlrlaplya saralwllva laalgllahf lpaalraall grlrtllpwa 150