HIP1R Knockout HAP1 Cell Line

The choice depends on whether you are studying HIP1R (HIP1-related)'s role as a clathrin-mediated endocytosis adapter or its functions in actin-clathrin coupling. The Knockout line is the standard tool for asking whether HIP1R is required for these processes — HIP1R is closely related to HIP1, both containing ANTH (AP180 N-terminal homology) domain for clathrin/lipid binding and talin-like domain; HIP1R links clathrin-coated vesicles to the actin cytoskeleton during endocytosis. Overexpression is useful for studying HIP1R in heterologous expression contexts. Important consideration: HIP1 and HIP1R share substantial functional overlap — single HIP1R knockout may show modest phenotypes if HIP1 compensates. This product complements the parallel HIP1 Knockout in HAP1 (also available) for paralog-specific functional dissection. Rescue with wild-type HIP1R is the standard specificity control. The knockout is valuable for studying clathrin-mediated endocytosis biology and actin-coupling mechanisms during vesicle internalization.

Primary applications: • Clathrin-mediated endocytosis: transferrin uptake, EGFR internalization, and other CME cargo studies in HIP1R-null cells. • Actin-clathrin coupling: actin dynamics at clathrin-coated pits given HIP1R's role linking CCVs to actin cytoskeleton. • HIP1/HIP1R paralog studies: parallel analysis with HIP1 Knockout in HAP1 (also available) for paralog-specific functional dissection. • Clathrin/lipid binding: ANTH domain-dependent membrane lipid (PtdIns(4,5)P2) binding analysis. EDITGENE recommends this model for researchers investigating clathrin-mediated endocytosis and actin-coupled vesicle trafficking.

Yes. HIP1R rescue experiments require attention to multi-domain architecture: • Construct design: use a codon-modified HIP1R sequence with a small C-terminal tag (FLAG, HA). HIP1R has N-terminal ANTH domain (clathrin/lipid binding), coiled-coil region (HIP1 heterodimer), THATCH/talin-like domain (F-actin binding) — preserve all elements. • ANTH-mutant rescue: ANTH domain mutations disrupt clathrin/lipid binding for endocytosis-deficient rescue. • THATCH-mutant rescue: THATCH domain mutations disrupt actin binding, enabling separation of clathrin from actin functions. • Functional readout: rescue should restore clathrin-mediated endocytosis with proper actin coupling. 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.