2. Recombinant Proteins
  3. Ubiquitin Related Proteins
  4. Ubiquitin Enzymes
  5. E1 Enzymes

E1 Enzymes

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Ubiquitin or ubiquitin-like proteins (UBLs) carboxyl termini are attached to other proteins, or in some cases lipids, generally through E1-E2-E3 multienzyme cascades. The E1 activating enzymes (ubiquitin-activating enzyme) serve to activate ubiquitin/UBLs through C-terminal adenylation and thiol transfer and to coordinate the utilization of ubiquitin/UBLs in specific downstream pathways by charging cognate E2 enzymes, which then interact with the downstream ubiquitylation machinery to coordinate modification of the target.  In humans, there are eight E1 activating enzymes are known so far, including canonical (UBA1, UBA6, UBA7, SAE, and NAE) and non-canonical (UBA4, UBA5, and ATG7) E1 enzymes.

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Cat. No. Product Name / Synonyms Species Source
  • HY-P74485
    UBA1 Protein, Human (sf9, His-GST)

    Ubiquitin-like modifier-activating enzyme 1; Protein A1S9; UBA1; A1S9T; UBE1

    		Human Sf9 insect cells
    The UBA1 protein initiates ubiquitin conjugation, marking proteins for degradation in the ubiquitin-proteasome system. UBA1 Protein, Human (sf9, His-GST) is the recombinant human-derived UBA1 protein, expressed by Sf9 insect cells , with N-His, N-GST labeled tag. The total length of UBA1 Protein, Human (sf9, His-GST) is 1057 a.a., with molecular weight of ~130 kDa.
  • HY-P71395
    UBA5 Protein, Human (His)

    Ubiquitin-like modifier-activating enzyme 5; ThiFP1; UFM1-activating enzyme; Ubiquitin-activating enzyme E1 domain-containing protein 1; UBE1DC1; UBA5

    		Human E. coli
    The UBA5 protein activates UFM1 in ufmylation, linking the C-terminal glycine residue of UFM1 to a cysteine residue in E1. UBA5 Protein, Human (His) is the recombinant human-derived UBA5 protein, expressed by E. coli , with N-6*His labeled tag.
  • HY-P701353
    UBE1L2/UBA6 Protein, Human (Sf9, His, Strep)

    UBA6; Ubiquitin-like modifier-activating enzyme 6; Ubiquitin-activating enzyme 6; Monocyte protein 4; MOP-4; Ubiquitin-activating enzyme E1-like protein 2; E1-L2

    		Human Sf9 insect cells
    The ubiquitin E1 enzyme initiates ubiquitination by adenylating ubiquitin with ATP and forming a thioester bond with the E1 enzyme. It exhibits specificity for ubiquitin and excludes ubiquitin-like peptides. UBE1L2/UBA6 Protein, Human (Sf9, His, Strep) is the recombinant human-derived UBE1L2/UBA6 protein, expressed by Sf9 insect cells , with N-Strep, N-8*His labeled tag. The total length of UBE1L2/UBA6 Protein, Human (Sf9, His, Strep) is 1051 a.a., .
  • HY-P71567
    OGDC-E Protein, Mouse (His-SUMO)

    Ogdh; Kiaa4192; 2-oxoglutarate dehydrogenase; mitochondrial; EC 1.2.4.2; 2-oxoglutarate dehydrogenase complex component E1; OGDC-E1; Alpha-ketoglutarate dehydrogenase

    		Mouse E. coli
    The OGDC-E Protein, a vital component of the 2-oxoglutarate dehydrogenase complex, drives the conversion of 2-oxoglutarate to succinyl-CoA in the mitochondrion, a pivotal step in the Krebs cycle.It employs thiamine diphosphate for decarboxylation, connecting to the E2 enzyme and participating in nuclear histone succinylation with KAT2A.OGDC-E Protein, Mouse (His-SUMO) is the recombinant mouse-derived OGDC-E protein, expressed by E.coli , with N-SUMO, N-6*His labeled tag.
  • HY-P71643
    SAE1 Protein, Human (GST)

    Activator of SUMO1; AOS1; HSPC140; Sae1; SAE1_HUMAN; Sentrin/SUMO activating protein AOS1; UBL E1A; UBLE1A

    		Human E. coli
    SAE1 protein, forming a heterodimer, acts as an E1 ligase for SUMO1, SUMO2, SUMO3, and potentially SUMO4. It critically mediates ATP-dependent activation of SUMO proteins, enabling the formation of a thioester bond with UBA2/SAE2's active site cysteine. This process is essential for protein modification through sumoylation. SAE1 Protein, Human (GST) is the recombinant human-derived SAE1 protein, expressed by E. coli , with N-GST labeled tag. The total length of SAE1 Protein, Human (GST) is 346 a.a., with molecular weight of ~65.4 kDa.
Cat. No. Product Name Effect Purity