This website uses cookies to ensure you get the best experience on our website.
- Table of Contents
LIF · Western blot design guide
LIF Western Blot Planning Guide
Plan a LIF Western blot around the catalog-observed 22 kDa band, image-backed PA1562 evidence, HPA controls, and verified protocol records.
Evidence assembled July 2026 · For research use; verify linked source records and product datasheet before use
LIF Western Blot Experimental Design Guide
Expected bands, validated protocols, controls and antibodies — the at-a-glance facts below, then the full design guide.
Must know before running
| Expected band | 22 kDa observed | |
| Observed band | 22 kDa observed | |
| Gel | 12-15% | |
| Positive control | Adipose tissue | |
| Negative control | Smooth muscle |
Important caveats
Reasons your observed band may differ from the expected size.
| ⓘ | Calculated mass | 22 kDa |
| ⓘ | Localization | Secreted |
| ⓘ | Processing / PTM | Record-dependent |
| ⓘ | Reactivity | Mouse / Rat / Human |
Section 1
Real Curated LIF 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, short transfer |
| Membrane | 0.45 µm PVDF |
| Blocking | 5% non-fat milk or 5% BSA in TBST |
| Primary | PA1562 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 LIF Western Blot Band Size?
Use the product-observed 22 kDa band as the primary planning value and retain the UniProt calculated mass as context.
| 22 kDa | Matches the authoritative product WB observation. |
| 22 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 LIF appearancePlan around 22 kDa and keep the calculated mass as supporting context.
| Catalog-observed band | 22 kDa; use this as the primary experimental expectation. |
| Calculated mass | 22 kDa from UniProt P15018; 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 PA1562. |
| Situation | Likely cause | Next action |
|---|---|---|
| 22 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 LIF band
PA1562 · LIFObserved 22 kDa · product-specific WB image
← swipe / scroll for more images →
Real WB data behind the band-size expectations in this section.
Sample controls for LIF Western blot
🧪Use Adipose tissue as the first positive-control candidate and retain an orthogonal negative control.
Positive control: Adipose tissue (Medium)
Negative control: Smooth muscle (Not detected)
HPA protein score determines control status; other expression data is supporting context only.
HPA tissue expression evidence for LIF
Comprehensive Human Protein Atlas IHC scoring per tissue. Rows are taken directly from the HPA tissue chart on each tissue page — click any row's HPA link to view the source.
Positive expression · recommended positive controls
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Adipose tissue | Reported tissue cells | Medium | Protein (HPA) | HPA → |
| Breast | Reported tissue cells | Medium | Protein (HPA) | HPA → |
| Adrenal gland | Reported tissue cells | Medium | Protein (HPA) | HPA → |
| Appendix | Reported tissue cells | Medium | Protein (HPA) | HPA → |
| Bone marrow | Reported tissue cells | Low | Protein (HPA) | HPA → |
Undetected expression · recommended negative controls
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Smooth muscle | Reported tissue cells | Not detected | Protein (HPA) | HPA → |
Section 3
Advanced LIF Western Blot Tips
Deeper troubleshooting and optimisation questions for LIF, answered from its protein features.
Which band should guide the blot?
Use 22 kDa, the observation attached to the authoritative PA1562 WB record.
How should calculated mass be interpreted?
Treat the UniProt calculated mass as context; it does not replace the catalog-observed 22 kDa expectation.
Which positive control should I start with?
Start with Adipose tissue, the lead HPA protein-expression candidate.
Which negative control is defensible?
Use Smooth muscle as an orthogonal HPA Not detected candidate.
Which gel should I use?
Use 12-15% consistently across the quick facts, protocol table, and poster.
What transfer method to use for LIF Western blot?
Use the transfer method in the recommended protocol and verify transfer before blocking.
How should PA1562 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
LIF Western Blot Reagents
Mouse/Rat/Human-reactive LIF Western blot reagents with authoritative product imagery.
Real WB data
Anti-Leukemia inhibitory factor LIF Antibody Picoband®
Cat # PA1562
Real WB data
Anti-LIF Antibody Picoband®
Cat # PB9036
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.