FIGURE

Fig. 1

ID

ZDB-FIG-220516-11

Publication

Sun et al., 2022 - Mammalian eIF4E2-GSK3β maintains basal phosphorylation of p53 to resist senescence under hypoxia

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Fig. 1

Fig. 1: eIF4E2 regulates GSK3? proline-directed kinase activity.

A, B Depletion of eIF4E2 inhibits the phosphorylation of RBM38-Ser195. eIF4E2 siRNA#1 was transfected into HCT116 cells (A) or siRNA#2 was transfected into A549 or MCF7 cells (B) for 72?h, followed by WB with indicated antibodies. Antibody p-RBM38#1 or p-RBM38#2 was used to detect p-RBM38(Ser195) as indicated. C Identifying the GSK3? binding motif of eIF4E2 by GST pull-down assay. GSK3? directly interacts with eIF4E2, but not with eIF4E2 mutant lacking amino acid from 231 to 242 (?231?242). D The GSK3? binding motif of eIF4E2 or FRAT (Frat1 and Frat2) were aligned. E e2-I inhibits the phosphorylation of RBM38-Ser195. Cells were treated with different concentrations of e2-I (2, 5, 10??M) or scrambled e2-S (10??M) for 24?h, followed by WB. F CABS-dock showed the binding of e2-I to GSK3?. The crystallographic structure of GSK3? (PDB ID: 1H8F) was used and the interaction interface was highlighted in red. G The contact diagram of GSK3? with e2-I, proposed by CABS-dock web server. H G3-I inhibits the phosphorylation of RBM38-Ser195. I The most over-represented motif is proline-directed serine/threonine regulated by eIF4E2-GSK3? pathway. Phosphorylation motifs were extracted by using Motif-x algorithm and threshold for significance was set to P?

Expression Data

Expression Detail

Antibody Labeling

Phenotype Data

Phenotype Detail

Acknowledgments

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