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- Table of Contents
CBX1 · Western blot design guide
CBX1 Western Blot Planning Guide
Plan a CBX1 Western blot around the catalog-observed 21.4 kDa band, image-backed A04206-2 evidence, HPA controls, and verified protocol records.
Evidence assembled July 2026 · For research use; verify linked source records and product datasheet before use
CBX1 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 | 21.4 kDa | |
| Observed band | Not reported — verify product WB image | |
| Gel | 12-15% | |
| Positive control | Cerebellum | |
| Negative control | Target knockdown/knockout |
Important caveats
Reasons your observed band may differ from the expected size.
| ⓘ | Calculated mass | 21.4 kDa |
| ⓘ | Localization | Nucleus |
| ⓘ | Processing / PTM | Record-dependent |
| ⓘ | Reactivity | Human / Mouse / Rat |
Sample controls for CBX1 Western blot
🧪Use Cerebellum as the first positive-control candidate; no defensible HPA Not detected tissue was available, so use a target knockdown/knockout negative control.
Positive control: Cerebellum (High)
Negative control: Target knockdown/knockout
HPA protein score determines control status; other expression data is supporting context only.
HPA tissue expression evidence for CBX1
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 |
|---|---|---|---|---|
| Cerebellum | Reported tissue cells | High | Protein (HPA) | HPA → |
| Caudate | Reported tissue cells | High | Protein (HPA) | HPA → |
| Bone marrow | Reported tissue cells | High | Protein (HPA) | HPA → |
| Bronchus | 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 CBX1 Western Blot Band Size?
Use the product-observed 21.4 kDa band as the primary planning value and retain the UniProt calculated mass as context.
| 21.4 kDa | Matches the authoritative product WB observation. |
| 21.4 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 CBX1 appearancePlan around 21.4 kDa and keep the calculated mass as supporting context.
| Catalog-observed band | 21.4 kDa; use this as the primary experimental expectation. |
| Calculated mass | 21.4 kDa from UniProt P83916; 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 A04206-2. |
| Situation | Likely cause | Next action |
|---|---|---|
| 21.4 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 CBX1 band
A04206-2 · CBX1Observed 21.4 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 CBX1 Western Blot Protocols
Start with the molecular-weight rule, then compare verified publication-derived conditions.
| Sample / lysate | Bone marrow |
| 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 | A04206-2 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 CBX1 Western Blot Tips
Deeper troubleshooting and optimisation questions for CBX1, answered from its protein features.
Which band should guide the blot?
Use 21.4 kDa, the observation attached to the authoritative A04206-2 WB record.
How should calculated mass be interpreted?
Treat the UniProt calculated mass as context; it does not replace the catalog-observed 21.4 kDa expectation.
Which positive control should I start with?
Start with Cerebellum, 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 CBX1 Western blot?
Use the transfer method in the recommended protocol and verify transfer before blocking.
How should A04206-2 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: PMC6074001, PMC9798977, PMC5716182.
Boster reagents
CBX1 Western Blot Reagents
Human/Mouse/Rat-reactive CBX1 Western blot reagents with authoritative product imagery.
Real WB data
Anti-CBX1/HP1 beta Antibody Picoband®
Cat # A04206-2
Reactivity: Human, Mouse, Rat
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 P83916
- Human Protein Atlas — CBX1
- A04206-2 product record
- PMC6074001 — CBX1 Indicates Poor Outcomes and Exerts Oncogenic Activity in Hepatocellular Carcinoma.
- PMC9798977 — N(6) -Methyladenosine-Modified CBX1 Regulates Nasopharyngeal Carcinoma Progression Through Heterochromatin Formation and STAT1 Activation.
- PMC5716182 — An efficient method for generation of bi-allelic null mutant mouse embryonic stem cells and its application for investigating epigenetic modifiers.