2Z4T:
reference: Crystal structure of Vibrionaceae Photobacterium sp. JT-ISH-224 alpha2,6-sialyltransferase in a ternary complex with donor product CMP and acceptor substrate lactose: catalytic mechanism and substrate recognition., Kakuta Y, Okino N, Kajiwara H, Ichikawa M, Takakura Y, Ito M, Yamamoto T, Glycobiology. 2008 Jan;18(1):66-73. Epub 2007 Oct 25. PMID: 17962295

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