| Field | Specification |
|---|---|
| Target | |
| Alternative names | IST1 homolog; hIST1; Charged multivesicular body protein 8; CHMP8; Putative MAPK-activating protein PM28; IST1; KIAA0174 |
| UniProt # | |
| Host | |
| Clonality | |
| Isotype | |
| Reactivity | |
| Applications | |
| Immunogen | E.coli-derived human hIST1/IST1 recombinant protein (Position: E31-D331). Human IST1 shares 94% and 93.1% amino acid (aa) sequence identity with mouse and rat IST1, respectively. |
| Molecular weight | |
| Purification | |
| Reconstitution | |
| Cellular localization | |
| Concentration | |
| Form | Lyophilized |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Product Overview
This rabbit polyclonal antibody targets IST1 homolog in human, mouse and rat samples and is validated for Western blot, IHC, ICC/IF, flow cytometry and ELISA. The predicted molecular weight is 39.8 kDa, and the supplier reports an observed band at about 40 kDa.
IST1 is an ESCRT-III–related protein that recruits the ATPases VPS4 and the microtubule-severing enzyme spastin to membrane remodeling sites. It is needed for efficient abscission at the end of cytokinesis, for nuclear envelope resealing after mitosis and for endosomal tubule processing.
| Target | IST1 homolog (gene IST1; UniProt P53990, human) |
|---|---|
| Host / Clonality / Isotype | Rabbit / Polyclonal / IgG |
| Reactivity | Human, Mouse, Rat |
| Form | Lyophilized |
| Formulation | Per vial: 4 mg trehalose; 0.9 mg NaCl; 0.2 mg Na2HPO4 |
| Calculated MW | 39.8 kDa |
| Observed MW | 40 kDa |
| Storage | As supplied: −20 °C for up to 12 months from receipt. After reconstitution: 4 °C for up to 1 month, or aliquot and keep at −20 °C for up to 6 months. Avoid repeated freeze–thaw cycles. |
Validated Applications
| Western blot | 0.25–0.5 µg/mL (Human, Mouse, Rat) |
|---|---|
| IHC (paraffin sections) | 2–5 µg/mL (Human) |
| Immunocytochemistry / Immunofluorescence | 5 µg/mL (Human) |
| Flow cytometry (fixed cells) | 1–3 µg/1×106 cells (Human) |
| ELISA | 0.1–0.5 µg/mL |
Samples with a confirmed band (WB): human HeLa cells, human A549 cells, human PC-3 cells, human MRC-5 cells, rat PC-12 cells, mouse lung tissue, mouse NIH/3T3 cells.
Recommended loading (WB): 20–40 µg of total protein per lane.
Conditions in the example images (WB): 5–20% gradient SDS-PAGE under reducing conditions, 30 µg lysate per lane, transfer to nitrocellulose membrane, blocking in 5% non-fat milk, primary antibody at 0.5 µg/mL overnight at 4 °C, HRP-conjugated secondary antibody at 1:5000, ECL detection.
Samples with confirmed staining (IHC): human breast cancer tissue, human colon adenocarcinoma tissue, human testicular seminoma tissue, human thyroid papillary carcinoma tissue.
Recommended antigen retrieval: heat-mediated, in TE buffer (pH 9.0); citrate buffer (pH 6.0) can be used instead.
Conditions in the example images (IHC): heat-mediated antigen retrieval in EDTA buffer (pH 8.0).
Samples with confirmed staining (ICC/IF): U2OS cells.
Samples with a confirmed signal (flow cytometry): PC-3 cells.
Immunogen
Recombinant human hIST1/IST1 fragment (Glu31–Asp331), expressed in E. coli. Sequence identity with the mouse and rat orthologs: 94% and 93.1%, respectively.
Reactivity Notes
The supplier lists reactivity with human, mouse and rat. UniProt places IST1 homolog in the cytoplasmic vesicle, midbody and nucleus envelope. The samples tested by the supplier (listed above) are a practical starting point for positive controls.
Safety
Customization & Add-ons: Can’t find the antibody you need—or require a custom format for your assay? We can help you source the best match or support custom antibody solutions for diverse research needs, including species and isotype selection, conjugations and labeling (e.g., HRP/AP, biotin, fluorophores), purification grade options (Protein A/G, affinity purified), formulation preferences (buffer selection, carrier-free, glycerol-free), custom concentrations and aliquoting, low-endotoxin options for cell-based work, and application-focused QC/validation support (project dependent). Click Talk to a Scientist to submit a request, email us at support@biohippo.com, or explore our Research Services for additional support—our team will follow up with feasibility details and next steps.
