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| Product | Description | |
|---|---|---|
| E1 ubiquitin-activating enzyme | Catalyses the ATP-dependent activation of ubiquitin through the formation of a thioester bond between the C-terminal glycine of ubiquitin and the sulfhydryl side group of a cysteine residue in the E1 protein. The two-step reaction consists of the ATP-dependent formation of an E1-ubiquitin adenylate intermediate in which the C-terminal glycine of ubiquitin is bound to AMP via an acyl-phosphate linkage, then followed by the conversion to an E1-ubiquitin thioester bond via the cysteine residue on E1 in the second step. Group: Enzymes. Synonyms: ubiquitin activating enzyme; E1; ubiquitin-activating enzyme E1. Enzyme Commission Number: EC 6.2.1.45. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-5704; E1 ubiquitin-activating enzyme; EC 6.2.1.45; ubiquitin activating enzyme; E1; ubiquitin-activating enzyme E1. Cat No: EXWM-5704. |  |
| E2 ubiquitin-conjugating enzyme | The E2 ubiquitin-conjugating enzyme acquires the activated ubquitin from the E1 ubiquitin-activating enzyme (EC 6.2.1.45) and binds it via a transthioesterification reaction to itself. In the human enzyme the catalytic center is located at Cys-87 where ubiquitin is bound via its C-terminal glycine in a thioester linkage. Group: Enzymes. Synonyms: ubiquitin-carrier-protein E2; UBC (ambiguous); ubiquitin-conjugating enzyme E2. Enzyme Commission Number: EC 2.3.2.23. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-2297; E2 ubiquitin-conjugating enzyme; EC 2.3.2.23; ubiquitin-carrier-protein E2; UBC (ambiguous); ubiquitin-conjugating enzyme E2. Cat No: EXWM-2297. | |
| (E3-independent) E2 ubiquitin-conjugating enzyme | The enzyme transfers a single ubiquitin directly from an ubiquitinated E1 ubiquitin-activating enzyme to itself, and on to a lysine residue of the acceptor protein without involvement of E3 ubiquitin transferases (cf. EC 2.3.2.26, EC 2.3.2.27). It forms a labile ubiquitin adduct in the presence of E1, ubiquitin, and Mg2+-ATP and catalyses the conjugation of ubiquitin to protein substrates, independently of E3. This transfer has only been observed with small proteins. In vitro a transfer to small acceptors (e.g. L-lysine, N-acetyl-L-lysine methyl ester) has been observed. Group: Enzymes. Synonyms: E2-230K; UBE2O; E3-independent ubiquitin-conjugating enzyme E2. Enzyme Commission Number: EC 2.3.2.24. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-2298; (E3-independent) E2 ubiquitin-conjugating enzyme; EC 2.3.2.24; E2-230K; UBE2O; E3-independent ubiquitin-conjugating enzyme E2. Cat No: EXWM-2298. | |
| PYR-41 | PYR-41 is a selective and cell permeable inhibitor of ubiquitin-activating enzyme E1 with an IC 50 of < 10 μM, with little activity at E2 and E3. Uses: Scientific research. Group: Signaling pathways. CAS No. 418805-02-4. Pack Sizes: 10 mM * 1 mL; 5 mg; 10 mg; 50 mg; 100 mg. Product ID: HY-13296. |  |
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