Contact Us

The choice depends on whether you are studying UBE2O's hybrid E2/E3 activity or its reported roles in erythroid differentiation and ribosomal protein quality control. The Knockout line is appropriate for asking what is lost when UBE2O is absent — this is particularly informative given UBE2O's unique ability to function without an external E3 ligase for some substrates. Overexpression is useful for testing sufficiency or for studying UBE2O's competition with conventional E2-E3 pathways. For UBE2O research, the EDITGENE Knockout line in HAP1 is the higher-value starting tool — UBE2O's hybrid enzymatic activity makes it functionally distinct from other E2s, and clean loss-of-function is essential for mapping its endogenous substrate landscape. Rescue with wild-type or catalytically-dead UBE2O constructs is the standard control.

Yes. UBE2O rescue experiments require attention to its hybrid E2/E3 enzymology: • Construct design: UBE2O is large (~1,292 amino acids); use codon-modified sequences with C-terminal tags (FLAG, HA). N-terminal tags may interfere with the UBA domain. • Catalytically-dead rescue: the C1040A mutation in the active site cysteine abolishes ubiquitin transfer activity and is the standard control. • Hybrid activity dissection: domain deletion constructs (UBA domain deletion, E2 domain alone) can dissect UBE2O's dual E2/E3-like activities and identify which functions require E3-independent substrate recognition. • Functional readout: rescue should restore ubiquitination of UBE2O-specific substrates (BAP1, ribosomal proteins) and downstream phenotypes. HAP1-specific considerations: • Diploidization: HAP1 cells gradually diploidize during extended culture — confirm ploidy by flow cytometry at the time of phenotypic assay. • Integration site sensitivity: position effects on transgene expression are more pronounced in near-haploid backgrounds; generating multiple independent rescue clones is strongly recommended. • Transduction efficiency: HAP1 transduces with lentivirus at moderate efficiency — increase MOI compared to standard immortalized lines.

The choice depends on the experimental question. The Knockout line is appropriate for asking whether UBE2H is required for its reported functions in specific E3-dependent ubiquitination events. Overexpression is useful for testing sufficiency or for studying UBE2H's pairing with specific E3 ligases in heterologous systems. For UBE2H research, the EDITGENE Knockout line in HAP1 provides a clean genetic background for dissecting UBE2H-specific functions, given the substantial functional overlap among E2 family members. Rescue with wild-type or catalytically-dead UBE2H is the standard specificity control for assigning observed effects to UBE2H's ubiquitin conjugation activity.

Yes. UBE2H rescue experiments require attention to E2 specificity and E3 partner pairings: • Construct design: use a codon-modified UBE2H sequence with a small N- or C-terminal tag (FLAG, HA). UBE2H is small (~183 amino acids); both tag positions are typically tolerated. • Catalytically-dead rescue: the active site cysteine mutation (C87A) abolishes ubiquitin transfer activity and is the standard specificity control. • E3 partner specificity: UBE2H functions with specific E3 ligases — rescue interpretation should consider whether observed phenotypes depend on UBE2H itself or on its specific E3-cooperating substrate engagement. • Functional readout: rescue should restore UBE2H-dependent ubiquitination events identified by ubiquitin proteomics. HAP1-specific considerations: • Diploidization: HAP1 cells gradually diploidize during extended culture — confirm ploidy by flow cytometry at the time of phenotypic assay. • Integration site sensitivity: position effects on transgene expression are more pronounced in near-haploid backgrounds; generating multiple independent rescue clones is strongly recommended. • Transduction efficiency: HAP1 transduces with lentivirus at moderate efficiency — increase MOI compared to standard immortalized lines.

The choice depends on the experimental question. The Knockout line is appropriate for asking whether UBE2E3 is required for its reported substrate-specific ubiquitination functions, particularly its roles in stress response and quiescence-related signaling. Overexpression is useful for testing sufficiency or for distinguishing UBE2E3 from its UBE2E1 and UBE2E2 paralogs. For UBE2E3 research, the EDITGENE Knockout line in HAP1 is the more rigorous starting point because the UBE2E family has overlapping functions — complete UBE2E3 loss in a near-haploid background reveals UBE2E3-specific dependencies more clearly than partial reduction. Rescue with wild-type or catalytically-dead UBE2E3 is the standard control.

Yes. UBE2E3 rescue experiments require attention to family redundancy and N-terminal extension functions: • Construct design: use a codon-modified UBE2E3 sequence with a small C-terminal tag (FLAG, HA). UBE2E3 has an N-terminal extension that distinguishes it from canonical E2s — this region should be preserved in rescue constructs. • Catalytically-dead rescue: active site cysteine mutation (C145A) serves as the standard specificity control. • Paralog specificity: UBE2E1 and UBE2E2 share substantial homology with UBE2E3 — rescue experiments should account for residual paralog expression in HAP1 and use domain-swapped constructs where paralog-specific functions are being tested. • Functional readout: rescue should restore stress response and quiescence-related ubiquitination events. HAP1-specific considerations: • Diploidization: HAP1 cells gradually diploidize during extended culture — confirm ploidy by flow cytometry at the time of phenotypic assay. • Integration site sensitivity: position effects on transgene expression are more pronounced in near-haploid backgrounds; generating multiple independent rescue clones is strongly recommended. • Transduction efficiency: HAP1 transduces with lentivirus at moderate efficiency — increase MOI compared to standard immortalized lines.

The choice depends on the experimental question. The Knockout line is appropriate for asking whether UBE2D1 is required for ubiquitination events involving RING E3 ligases — UBE2D1 is one of the most widely used E2s in cellular ubiquitination, partnering with many RING ligases including BRCA1, MDM2, and TRAF proteins. Overexpression is useful for testing sufficiency or for biochemical reconstitution. For UBE2D1 research, an important consideration is the strong functional redundancy with UBE2D2 and UBE2D3 — single UBE2D1 knockout often shows mild phenotypes due to paralog compensation. The EDITGENE Knockout line in HAP1 is useful for studies focused on UBE2D1-specific functions but should be combined with UBE2D2/D3 status assessment. Rescue with wild-type or catalytically-dead UBE2D1 is the standard control.

Yes. UBE2D1 rescue experiments have specific considerations due to the strong paralog redundancy in this E2 family: • Construct design: use a codon-modified UBE2D1 sequence with a small N- or C-terminal tag (FLAG, HA). UBE2D1 is small (~147 amino acids); both tag positions are tolerated. • Catalytically-dead rescue: the C85A or C85S mutation abolishes ubiquitin transfer activity and is the standard control. • Paralog redundancy considerations: UBE2D2 and UBE2D3 share >88% sequence identity with UBE2D1 — single UBE2D1 rescue may show subtle phenotypes due to paralog compensation. For comprehensive analysis, consider combined UBE2D1/D2/D3 knockout backgrounds. • Functional readout: rescue should restore ubiquitination by UBE2D1-dependent RING E3 partners (BRCA1, MDM2, TRAF6). HAP1-specific considerations: • Diploidization: HAP1 cells gradually diploidize during extended culture — confirm ploidy by flow cytometry at the time of phenotypic assay. • Integration site sensitivity: position effects on transgene expression are more pronounced in near-haploid backgrounds; generating multiple independent rescue clones is strongly recommended. • Transduction efficiency: HAP1 transduces with lentivirus at moderate efficiency — increase MOI compared to standard immortalized lines.

The choice depends on whether you are studying UBE2C's role in APC/C-mediated cell cycle regulation or its overexpression effects in cancer contexts. The Knockout line is appropriate for asking whether UBE2C is required for cyclin B1 and securin destruction during mitosis — its principal characterized function as the major APC/C-cooperating E2. Overexpression is useful for modeling cancer-associated UBE2C upregulation that has been linked to chromosomal instability. For cell cycle research, the EDITGENE Knockout line in HAP1 is highly informative because UBE2C loss produces strong mitotic phenotypes that are easier to score in the near-haploid background. Note that UBE2C is essential in many contexts — viability characterization should precede extended use. Rescue with wild-type or catalytically-dead UBE2C is the standard control.

Yes, with viability considerations specific to UBE2C's essential function: • Construct design: use a codon-modified UBE2C sequence with a small C-terminal tag (FLAG, HA). UBE2C is small (~179 amino acids); the destruction box-like N-terminal motif should be preserved. • Catalytically-dead rescue: the C114A mutation in the active site abolishes ubiquitin transfer activity and is the standard specificity control. • Viability and timing: UBE2C is essential for mitotic exit — knockout cells may have limited viability, requiring rescue experiments to be initiated before terminal mitotic failure. Inducible knockout systems combined with rescue constructs are often preferred. • Functional readout: rescue should restore APC/C-mediated degradation of cyclin B1 and securin during mitotic exit, measured by cell cycle progression and substrate degradation kinetics. HAP1-specific considerations: • Diploidization: HAP1 cells gradually diploidize during extended culture — confirm ploidy by flow cytometry at the time of phenotypic assay. • Integration site sensitivity: position effects on transgene expression are more pronounced in near-haploid backgrounds; generating multiple independent rescue clones is strongly recommended. • Transduction efficiency: HAP1 transduces with lentivirus at moderate efficiency — increase MOI compared to standard immortalized lines.

The choice depends on the experimental question. The Knockout line is appropriate for asking whether UBE2B (RAD6B) is required for its reported functions in DNA damage tolerance — particularly PCNA monoubiquitination during translesion synthesis — and chromatin-related ubiquitination events. Overexpression is useful for testing sufficiency or for distinguishing UBE2B from its RAD6A (UBE2A) paralog. For UBE2B research, the EDITGENE Knockout line in HAP1 provides a clean genetic background for dissecting UBE2B-specific functions. Note that UBE2A and UBE2B (RAD6A and RAD6B) have substantial functional overlap — comprehensive analysis often requires considering both paralogs. Rescue with wild-type or catalytically-dead UBE2B is the standard specificity control.

Yes. UBE2B rescue experiments require attention to RAD6A/B paralog biology and DNA damage timing: • Construct design: use a codon-modified UBE2B sequence with a small N- or C-terminal tag (FLAG, HA). UBE2B is small (~152 amino acids); both tag positions are typically tolerated. • Catalytically-dead rescue: the C88A mutation in the active site cysteine abolishes ubiquitin transfer activity and is the standard control. • RAD6A paralog considerations: UBE2A (RAD6A) shares >95% sequence identity with UBE2B (RAD6B) and has substantially overlapping functions — analyses should consider both paralogs to interpret single-knockout phenotypes. • Functional readout: rescue should restore PCNA monoubiquitination following UV damage and translesion synthesis-dependent damage tolerance. HAP1-specific considerations: • Diploidization: HAP1 cells gradually diploidize during extended culture — confirm ploidy by flow cytometry at the time of phenotypic assay. • Integration site sensitivity: position effects on transgene expression are more pronounced in near-haploid backgrounds; generating multiple independent rescue clones is strongly recommended. • Transduction efficiency: HAP1 transduces with lentivirus at moderate efficiency — increase MOI compared to standard immortalized lines.

The choice depends on whether you are studying TUBB1's role in platelet biology or modeling TUBB1-associated thrombocytopenia. The Knockout line is the standard tool for both — TUBB1 mutations cause inherited macrothrombocytopenia, and TUBB1 KO recapitulates aspects of impaired proplatelet formation. Overexpression is useful for studying TUBB1 incorporation into microtubule networks in cells that do not normally express it. Note that TUBB1 expression is largely restricted to megakaryocytes and platelets in vivo — HAP1, like most non-megakaryocytic cell lines, expresses minimal endogenous TUBB1. The EDITGENE Knockout line is useful for studying TUBB1 in heterologous expression contexts or for confirming complete loss in cells with low baseline expression. Rescue with wild-type or disease-mutant TUBB1 (e.g., Q43P, R318W) is informative for inherited thrombocytopenia research.

Yes. TUBB1 rescue experiments require attention to tubulin assembly biology and tissue-specific expression: • Construct design: use a codon-modified TUBB1 sequence. Tubulins are highly sensitive to N-terminal modifications — C-terminal tags are strongly preferred, and small epitope tags (FLAG, HA, Myc) are recommended over larger fusion tags. • Disease mutation rescue: TUBB1 thrombocytopenia-associated mutations (Q43P, R318W, R215C) can be introduced for genotype-phenotype correlation studies in a controlled cellular background. • Heterologous expression context: HAP1 normally expresses minimal TUBB1 — rescue experiments effectively become heterologous expression studies, useful for assessing TUBB1 incorporation into microtubule networks. • Functional readout: rescue should restore TUBB1 incorporation into microtubules (immunofluorescence) and, where relevant, assembly characteristics distinct from other β-tubulin isotypes. HAP1-specific considerations: • Diploidization: HAP1 cells gradually diploidize during extended culture — confirm ploidy by flow cytometry at the time of phenotypic assay. • Integration site sensitivity: position effects on transgene expression are more pronounced in near-haploid backgrounds; generating multiple independent rescue clones is strongly recommended. • Transduction efficiency: HAP1 transduces with lentivirus at moderate efficiency — increase MOI compared to standard immortalized lines.

The choice depends on whether you are studying TTBK2's role in ciliogenesis or modeling spinocerebellar ataxia type 11. The Knockout line is the standard tool for both — TTBK2 mutations cause SCA11 through impaired ciliogenesis, and TTBK2 KO recapitulates the cilia assembly defect. Overexpression is useful for testing whether elevated TTBK2 activity is sufficient to drive enhanced cilia formation or for in vitro kinase assays. For ciliogenesis research, the EDITGENE Knockout line in HAP1 is highly informative — TTBK2 functions at the distal centriole to initiate ciliogenesis, and its complete loss prevents cilia formation. Rescue with wild-type, kinase-dead, or SCA11 truncation-mutant TTBK2 is essential for distinguishing kinase activity from scaffolding functions and modeling disease genetics.