Protein zyg-11 homolog B

Definition:

Serves as substrate adapter subunit in the E3 ubiquitin ligase complex ZYG11B-CUL2-Elongin BC. Acts redudantly with ZER1 to target substrates bearing N-terminal glycine degrons for proteasomal degradation. Involved in the clearance of proteolytic fragments generated by caspase cleavage during apoptosis since N-terminal glycine degrons are strongly enriched at caspase cleavage sites. Also important in the quality control of protein N-myristoylation in which N-terminal glycine degrons are conditionally exposed after a failure of N-myristoylation.

References:

[1]. Kim S Robinson, et al. Enteroviral 3C protease activates the human NLRP1 inflammasome in airway epithelia. Science. 2020 Dec 4;370(6521):eaay2002. [Content Brief]

[2]. Richard T Timms, et al. A glycine-specific N-degron pathway mediates the quality control of protein N-myristoylation. Science. 2019 Jul 5;365(6448):eaaw4912. [Content Brief]

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