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- Table of Contents
MECOM · Western blot design guide
MECOM Western Blot Planning Guide
Plan a MECOM Western blot around the catalog-observed 138.1 kDa band, image-backed A04590-1 evidence, HPA controls, and verified protocol records.
Evidence assembled July 2026 · For research use; verify linked source records and product datasheet before use
MECOM 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 | 138.1 kDa | |
| Observed band | Not reported — verify product WB image | |
| Gel | 8-10% | |
| Positive control | Adipose tissue | |
| Negative control | Target knockdown/knockout |
Important caveats
Reasons your observed band may differ from the expected size.
| ⓘ | Calculated mass | 138.1 kDa |
| ⓘ | Localization | Nucleus / Nucleus speckle |
| ⓘ | Processing / PTM | Record-dependent |
| ⓘ | Reactivity | Human |
Sample controls for MECOM Western blot
🧪Use Adipose tissue as the first positive-control candidate; no defensible HPA Not detected tissue was available, so use a target knockdown/knockout negative control.
Positive control: Adipose tissue (High)
Negative control: Target knockdown/knockout
HPA protein score determines control status; other expression data is supporting context only.
HPA tissue expression evidence for MECOM
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 | High | Protein (HPA) | HPA → |
| Breast | 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 |
|---|
No HPA Not detected tissue is available; use a target knockdown/knockout negative control.
Section 1
What Is the Expected MECOM Western Blot Band Size?
Use the product-observed 138.1 kDa band as the primary planning value and retain the UniProt calculated mass as context.
| 138.1 kDa | Matches the authoritative product WB observation. |
| 138.1 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 MECOM appearancePlan around 138.1 kDa and keep the calculated mass as supporting context.
| Catalog-observed band | 138.1 kDa; use this as the primary experimental expectation. |
| Calculated mass | 138.1 kDa from UniProt Q03112; retain as context. |
| Gel selection | 8-10%; shared with the recommended protocol and poster. |
| Specificity check | Compare the lead HPA positive and negative controls with A04590-1. |
| Situation | Likely cause | Next action |
|---|---|---|
| 138.1 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 MECOM band
A04590-1 · MECOMObserved 138.1 kDa · product-specific WB image
← swipe / scroll for more images →
Real WB data behind the band-size expectations in this section.
Section 2
Real Curated MECOM Western Blot Protocols
Start with the molecular-weight rule, then compare verified publication-derived conditions.
| Sample / lysate | Adipose tissue |
| Gel % | 8-10% |
| Load | 20-30 µg total protein per lane |
| Transfer | Wet/tank, extended transfer |
| Membrane | 0.45 µm PVDF |
| Blocking | 5% non-fat milk or 5% BSA in TBST |
| Primary | A04590-1 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 4
Advanced MECOM Western Blot Tips
Deeper troubleshooting and optimisation questions for MECOM, answered from its protein features.
Which band should guide the blot?
Use 138.1 kDa, the observation attached to the authoritative A04590-1 WB record.
How should calculated mass be interpreted?
Treat the UniProt calculated mass as context; it does not replace the catalog-observed 138.1 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 a target knockdown/knockout control when no HPA Not detected tissue is available.
Which gel should I use?
Use 8-10% consistently across the quick facts, protocol table, and poster.
What transfer method to use for MECOM Western blot?
Use the transfer method in the recommended protocol and verify transfer before blocking.
How should A04590-1 be started?
Start at the linked datasheet condition and run a three-point primary-antibody dilution test.
Which publication-derived protocols can I compare?
Compare only the supplied target-verified records: PMC10130150, PMC4169276, PMC4716764.
Boster reagents
MECOM Western Blot Reagents
Human-reactive MECOM Western blot reagents with authoritative product imagery.
Real WB data
Anti-EVI1/MECOM Antibody Picoband®
Cat # A04590-1
Reactivity: Human
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 Q03112
- Human Protein Atlas — MECOM
- A04590-1 product record
- PMC10130150 — Epigenetic landscape reveals MECOM as an endothelial lineage regulator.
- PMC4169276 — Meta-analysis identifies a MECOM gene as a novel predisposing factor of osteoporotic fracture.
- PMC4716764 — Expression of MECOM is associated with unfavorable prognosis in glioblastoma multiforme.