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New Research: Differential Degradation of TRA2A and PYCR2 Mediated by Ubiquitin E3 Ligase E4B: E4B belongs to the U-box E3 ligase family and functions as either an E3 or an E4 enzyme in protein ubiquitination. Transformer2A (TRA2A) and… https://t.co/g57MbJ