ST3 beta-galactoside alpha-2,3-sialyltransferase 5 ICKCTLVAFGVWLLYILILNYTAEECDMKRMHYVDPDRIK ILKCTLLVFGVWILYILKLNYTTEECDMKKMHYVDPDHVK ILKCTLLVFG VWILYILKLN YTTEECDMKK MHYVDPDHVK S