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Kallikrein-related peptidase 4 (KLK4) N-glycan attachment sites and core structures. Bars represent the primary sequences of the 224-amino-acid activated pig and mouse KLK4 enzymes. The positions of the three potential N-linked glycosylations are indicated. The four core glycan structures found on KLK4 are shown. The pig glycans can have 0–3 sialic acids and the mouse glycans can have 0–2 sialic acids.
