The SPY protein has significant similarity to O-linked GlcNAc transferase (OGT) from animals, which suggests that it may also have OGT activity.

• SPY蛋白与动物中的氧连N-乙酰葡萄糖胺转移酶(OGT)具有广泛的同源性,两者可能有着类似的作用机制。