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Crystal structure of ZYG11B bound to GSTE degronCrystal structure of ZYG11B bound to GSTE degron
Structural highlights
Publication Abstract from PubMedN-degron pathways are a set of proteolytic systems that target the N-terminal destabilizing residues of substrates for proteasomal degradation. Recently, the Gly/N-degron pathway has been identified as a new branch of the N-degron pathway. The N-terminal glycine degron (Gly/N-degron) is recognized by ZYG11B and ZER1, the substrate receptors of the Cullin 2-RING E3 ubiquitin ligase (CRL2). Here we present the crystal structures of ZYG11B and ZER1 bound to various Gly/N-degrons. The structures reveal that ZYG11B and ZER1 utilize their armadillo (ARM) repeats forming a deep and narrow cavity to engage mainly the first four residues of Gly/N-degrons. The alpha-amino group of the Gly/N-degron is accommodated in an acidic pocket by five conserved hydrogen bonds. These structures, together with biochemical studies, decipher the molecular basis for the specific recognition of the Gly/N-degron by ZYG11B and ZER1, providing key information for future structure-based chemical probe design. Molecular basis for recognition of Gly/N-degrons by CRL2(ZYG11B) and CRL2(ZER1).,Yan X, Li Y, Wang G, Zhou Z, Song G, Feng Q, Zhao Y, Mi W, Ma Z, Dong C Mol Cell. 2021 Jun 23. pii: S1097-2765(21)00457-3. doi:, 10.1016/j.molcel.2021.06.010. PMID:34214466[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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