E2 enzymes
E2 enzymes (Ubiquitin-conjugating enzymes) perform the second step in the ubiquitination reaction that targets a protein for degradation via the proteasome.The ubiquitination process covalently attaches ubiquitin, a short protein of 76 amino acids, to a lysine residue on the target protein. Once a protein has been tagged with one ubiquitin molecule, additional rounds of ubiquitination form a polyubiquitin chain that is recognized by the proteasome's 19S regulatory particle, triggering the ATP-dependent unfolding of the target protein that allows passage into the proteasome's 20S core particle, where proteases degrade the target into short peptide fragments for recycling by the cell.
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Mephedrone hydrochloride是抑制 synaptosomal dopamine，5-HT uptake inhibitor（摄取抑制剂）。
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Mephenytoin是CYP2C19 底物。 抗惊厥剂。
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m-CPP hydrochloride是5-HT2B/2C受体激动剂。
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MDL 100907是活性选择性5-HT2A拮抗剂。
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MDL 11，939是5-HT2A 拮抗剂。
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