Reference: Hirsch C, et al. (2004) Yeast N-glycanase distinguishes between native and non-native glycoproteins. EMBO Rep 5(2):201-6

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Abstract


N-glycanase from Saccharomyces cerevisiae (Png1) preferentially removes N-glycans from misfolded proteins. The ability of Png1 to distinguish between folded and misfolded glycoproteins is reminiscent of substrate recognition by UDP-glucose glycoprotein glucosyl transferase, an enzyme that possesses this trait. The only known in vivo substrates of Png1 are aberrant glycoproteins that originate in the endoplasmic reticulum, and arrive in the cytoplasm for proteasomal degradation. The substrate specificity of Png1 is admirably suited for this task.

Reference Type
Journal Article | Research Support, Non-U.S. Gov't
Authors
Hirsch C, Misaghi S, Blom D, Pacold ME, Ploegh HL
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