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- Table of Contents
NPM1 · Western blot design guide
NPM1 Western Blot Planning Guide
Plan a NPM1 Western blot around the catalog-observed 32.6 kDa band, image-backed PA1931 evidence, HPA controls, and verified protocol records.
Evidence assembled July 2026 · For research use; verify linked source records and product datasheet before use
NPM1 Western Blot Experimental Design Guide
Expected bands, documented protocol parameters, controls and antibodies — the at-a-glance facts below, then the full design guide.
Must know before running
| Expected band | 32.6 kDa | |
| Observed band | Not reported — verify product WB image | |
| Gel | 12-15% | |
| Positive control | Breast | |
| Negative control | Target knockdown/knockout |
Important caveats
Reasons your observed band may differ from the expected size.
| ⓘ | Calculated mass | 32.6 kDa |
| ⓘ | Localization | Nucleus, nucleolus / Nucleus, nucleoplasm |
| ⓘ | Processing / PTM | Record-dependent |
| ⓘ | Reactivity | Human / Mouse / Rat |
Section 1
Real Curated NPM1 Western Blot Protocols
Start with the molecular-weight rule, then compare verified publication-derived conditions.
| Sample / lysate | Adipose tissue |
| Gel % | 12-15% |
| Load | 20-30 µg total protein per lane |
| Transfer | Semi-dry, standard transfer |
| Membrane | 0.45 µm PVDF |
| Blocking | 5% non-fat milk or 5% BSA in TBST |
| Primary | PA1931 at datasheet starting dilution |
| Primary incubation | Overnight at 4 °C with gentle agitation |
| Secondary | Species-matched HRP conjugate at validated dilution |
| Wash | 3 × 5 min in TBST |
| Detection | Chemiluminescent substrate |
| Exposure | Bracket exposures to avoid saturation |
Section 2
What Is the Expected NPM1 Western Blot Band Size?
Use the product-observed 32.6 kDa band as the primary planning value and retain the UniProt calculated mass as context.
| 32.6 kDa | Matches the authoritative product WB observation. |
| 32.6 kDa calculated | Use as UniProt context, not as a replacement observed band. |
| Unexpected additional signal | Do not assign identity without orthogonal positive/negative controls. |
💡Expected NPM1 appearancePlan around 32.6 kDa and keep the calculated mass as supporting context.
| Catalog-observed band | 32.6 kDa; use this as the primary experimental expectation. |
| Calculated mass | 32.6 kDa from UniProt P06748; retain as context. |
| Gel selection | 12-15%; shared with the recommended protocol and poster. |
| Specificity check | Compare the lead HPA positive and negative controls with PA1931. |
| Situation | Likely cause | Next action |
|---|---|---|
| 32.6 kDa | Matches the authoritative product WB observation. | Confirm with orthogonal controls and the linked product record. |
| Additional band | May reflect processing, modification, or non-specific signal. | Run a dilution series and compare positive/negative controls. |
| Weak signal | Target abundance or transfer may be limiting. | Verify transfer, increase positive-control abundance, and bracket exposure. |
Experiment evidence
Western blot images showing NPM1 band
PA1931 · NPM1
← swipe / scroll for more images →
Real WB data behind the band-size expectations in this section.
Sample controls for NPM1 Western blot
🧪Use Breast as the first positive-control candidate; no defensible HPA Not detected tissue was available, so use a target knockdown/knockout negative control.
Positive control: Breast (High)
Negative control: Target knockdown/knockout
HPA protein score determines control status; other expression data is supporting context only.
HPA tissue expression evidence for NPM1
Comprehensive Human Protein Atlas IHC scoring per tissue. Rows are taken directly from the HPA tissue chart — click any row's HPA link to view the source.
Positive expression · recommended positive controls
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Breast | Reported tissue cells | High | Protein (HPA) | HPA → |
| Adipose tissue | Reported tissue cells | High | Protein (HPA) | HPA → |
| Adrenal gland | Reported tissue cells | High | Protein (HPA) | HPA → |
| Appendix | Reported tissue cells | High | Protein (HPA) | HPA → |
Undetected expression · recommended negative controls
| Tissue | Cell type | Level | Evidence | Source |
|---|
Section 3
Advanced NPM1 Western Blot Tips
Deeper troubleshooting and optimisation questions for NPM1, answered from its protein features.
Which band should guide the blot?
Use 32.6 kDa, the observation attached to the authoritative PA1931 WB record.
How should calculated mass be interpreted?
Treat the UniProt calculated mass as context; it does not replace the catalog-observed 32.6 kDa expectation.
Which positive control should I start with?
Start with Breast, the lead HPA protein-expression candidate.
Which negative control is defensible?
Use a target knockdown/knockout control when no HPA Not detected tissue is available.
Which gel should I use?
Use 12-15% consistently across the quick facts, protocol table, and poster.
What transfer method to use for NPM1 Western blot?
Use the transfer method in the recommended protocol and verify transfer before blocking.
How should PA1931 be started?
Start at the linked datasheet condition and run a three-point primary-antibody dilution test.
Which publication-derived protocols can I compare?
No verified publication protocol was supplied; use only the deterministic recommended protocol.
Boster reagents
NPM1 Western Blot Reagents
Human/Mouse/Rat-reactive NPM1 Western blot reagents with authoritative product imagery.
Real WB data
Anti-Nucleophosmin/NPM1 Antibody Picoband®
Cat # PA1931
Real WB data
Anti-Nucleophosmin/NPM1 Antibody Picoband®
Cat # PB9341
Only image-backed, WB-validated Human/Mouse/Rat recommendations from the prepared catalog evidence are shown.
Source: prepared picoband-wb product evidence; each card retains its own SKU, URL, observed band, and authoritative WB image.
References
- UniProt P06748
- Human Protein Atlas — NPM1
- PA1931 product record
- PMC12847774 — SERPINB3 enhances NPM1 sumoylation via inhibiting SENP3's activity and promotes lung tumorigenesis (Cell death & disease, 2025)
- PMC3521654 — The nuclear chaperone nucleophosmin escorts an Epstein-Barr Virus nuclear antigen to establish transcriptional cascades for latent infection in human B cells (PLoS pathogens, 2012)
- PMC10433958 — Host Factor Nucleophosmin 1 (NPM1/B23) Exerts Antiviral Effects against Chikungunya Virus by Its Interaction with Viral Nonstructural Protein 3 (Microbiology spectrum, 2023)