ST3 beta-galactoside alpha-2,3-sialyltransferase 5 XGCAERRPLQ PRTEAAAAPA GRAMPSEYTY VKLRSDCSRP SLQWYTRAQS KMRRPSLLLK DILKCTLLVF GVWILYILKL NYTTEECDMK KMHYVDPDHV KRAQKYAQQV LQKECRPKFA KTSMALLFEH RARPP