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NKX6-1 / Homeobox protein Nkx-6.1 · Western blot design guide
Design a Western Blot for NKX6-1
Real validated NKX6-1 Western blot protocols, expected-band and isoform facts, troubleshooting for weak or shifted signal, and recommended anti-NKX6-1 WB antibodies. Everything you need to plan the experiment before you commit precious samples.
Evidence assembled September 2026 · For research use; verify linked source records and product datasheet before use
NKX6-1 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 | ~37.8 kDa | |
| Observed band | ~50 kDa | |
| Gel | 10% (catalog A05760-1) | |
| Positive control | Pancreas (IHC candidate; verify WB) | |
| Negative control | Adipose tissue (IHC candidate; verify WB) |
Important caveats
Reasons your observed band may differ from the expected size.
| PTM | Methylated | |
| Caveat | Modification-state controls | |
| Gene-set association | MSigDB Hallmark membership | |
| Isoform | 1 isoform(s) |
Section 1
Real Curated NKX6-1 Western Blot Protocols
The A05760-1 protocol combines labelled catalog values with standard starting conditions. Published comparisons retain their own sample, reagent and detection scope.
| Sample / lysate | human 293T, human U2OS, human U251 (catalog A05760-1) |
| Gel % | 10% (catalog A05760-1) |
| Load | 30 ug; reducing conditions (catalog A05760-1) |
| Transfer | a nitrocellulose membrane at 150 mA for 50-90 minutes (catalog A05760-1) |
| Membrane | nitrocellulose membrane (catalog A05760-1) |
| Blocking | 5% non-fat milk/TBS for 1.5 hour at RT (catalog A05760-1) |
| Primary antibody | A05760-1 · 0.5 μg/mL (catalog A05760-1) |
| Primary incubation | overnight at 4°C (catalog A05760-1) |
| Secondary antibody | goat anti-rabbit IgG-HRP, 1:5000 (catalog A05760-1) |
| Secondary incubation | 1.5 hour at RT (catalog A05760-1) |
| Wash | TBS-0.1%Tween 3 times with 5 minutes each (catalog A05760-1) |
| Detection | ECL (catalog A05760-1) |
Section 2
What Is the Expected NKX6-1 Western Blot Band Size?
NKX6-1 is predicted at 37.8 kDa, while antibody QC observes about 50 kDa; the cause of this difference is not established.
| Band near 50 kDa | Empirical NKX6-1 band in reducing whole-cell lysates; confirm identity with antibody controls |
| Band near 38 kDa | Near the 37.8 kDa sequence-based prediction; identity requires confirmation |
| No band in whole-cell lysate | Nuclear NKX6-1 may be insufficiently represented or expressed in the sample |
| Additional bands | The single annotated isoform does not establish their identity; check specificity |
💡Expected NKX6-1 appearanceUniProt predicts 37.8 kDa, while antibody QC reports a band near 50 kDa in reducing lysates; the cause of the difference is unestablished, so confirm band identity with ordinary specificity controls.
| UniProt predicted mass | 37.8 kDa from sequence; the empirical band is near 50 kDa |
| 367-residue sequence | Underlies the predicted mass but does not explain apparent migration |
| Arg189 asymmetric dimethylation | Annotated modification with no demonstrated visible band shift |
| Single annotated isoform | Provides no evidence for distinct isoform band sizes |
| Situation | Likely cause | Next action |
|---|---|---|
| No band in lysate | Nuclear NKX6-1 may be scarce in the whole-cell sample | Check sample expression and test a nuclear-enriched fraction |
| Band higher than expected | The observed band is near 50 kDa, above the 37.8 kDa prediction; the cause is unestablished | Compare with the QC band and verify identity using knockdown or a second antibody |
| Band lower than expected | Identity or sample integrity is uncertain; no cleavage is annotated | Check sample handling and confirm the band with an independent antibody |
| Multiple bands | Only one isoform is annotated, so additional bands have no established assignment | Compare with knockdown and an independent antibody |
| Weak or no signal | NKX6-1 abundance may be low in the sample | Use a verified positive sample and assess nuclear enrichment |
Experiment evidence
Western blot images showing NKX6-1 band
A05760-1 · NKX6-1
← swipe / scroll for more images →
Real WB data behind the band-size expectations in this section.
Sample controls for NKX6-1 Western blot
🧪HPA-IHC candidate guidance (verify in WB): For positive controls for NKX6-1 in Western blot, you can use pancreas tissue lysate.
Positive control: Pancreas (IHC candidate; verify WB)
Negative control: Adipose tissue (IHC candidate; verify WB)
Loading controls: Run GAPDH, β-actin, and a total-protein stain such as Ponceau alongside samples.
⚠️Feasibility: NKX6-1 is nuclear, so nuclear-enriched lysate may improve detection.
HPA tissue expression evidence for NKX6-1
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.
Higher expression tissues · candidate positive controls from IHC
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Pancreas | pancreatic endocrine cells | High | Protein (IHC) | HPA → |
Lower expression tissues · IHC evidence, not confirmed WB-negative controls
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Adipose tissue | adipocytes | Not detected | Protein (IHC) | HPA → |
| Adrenal gland | glandular cells | Not detected | Protein (IHC) | HPA → |
| Appendix | glandular cells | Not detected | Protein (IHC) | HPA → |
| Bone marrow | hematopoietic cells | Not detected | Protein (IHC) | HPA → |
| Breast | adipocytes | Not detected | Protein (IHC) | HPA → |
Section 3
Advanced NKX6-1 Western Blot Tips
Deeper troubleshooting and optimisation questions for NKX6-1, answered from its protein features.
How should NKX6-1 band migration be interpreted?
Band shift · Use the separately labelled calculated mass and catalog-observed evidence above. A sequence annotation does not establish an observed migration shift. Verify target identity with orthogonal controls.
Could NKX6-1 isoforms explain multiple bands?
Isoforms · Only one isoform is listed, with no alternative sequence supplied. These features do not support assigning additional bands to annotated NKX6-1 isoforms. Verify their identity before quantifying them as NKX6-1.
Do annotated modifications prove a band shift?
PTM · The linked UniProt record describes protein features. A modification annotation alone does not demonstrate a visible shift; retain any condition or experimental qualifier attached to it.
Does this guide establish induction of NKX6-1?
Induction · No general induction response is established by this guide. A pathway or gene-set association is not evidence of induction in a particular specimen. Verify the relevant treatment and control in a target-specific experiment.
What transfer method to use for NKX6-1 Western blot?
Transfer · Assess transfer in the region spanning the 37.8 kDa predicted mass and the reported ~50 kDa apparent band. The supplied features do not specify a membrane or transfer method, so verify transfer efficiency in that region for the chosen setup.
How should blocking be optimized?
Blocking · Standard workflow guidance: follow the A05760-1 datasheet where specified. Otherwise compare 5% milk or 5% BSA in TBST; for a phospho-specific assay start with BSA. Optimize background and specific signal with matched controls.
How should NKX6-1 bands be quantified?
Quantitation · Quantify a consistently identified band across samples and normalize within the same sample preparation and fraction. The reported ~50 kDa band is a useful location to inspect, but apparent size alone does not establish band identity.
Why is the observed NKX6-1 band near 50 kDa?
Interpretation · The reported apparent band is ~50 kDa, while the predicted mass is 37.8 kDa. The supplied features do not establish the cause of this difference. Check both regions when identifying the band and confirm its identity with a specificity control.
UniProt lists asymmetric dimethylarginine at position 189, using UniProt sequence numbering. This modification is relevant when interpreting the protein, but its presence alone does not establish a visible shift or explain the ~50 kDa apparent band.
NKX6-1 is annotated as nuclear. A nuclear fraction is therefore relevant for detection; when comparing samples, use the same fraction and preparation approach throughout.
Compare them with the predicted 37.8 kDa mass and reported ~50 kDa band, then check specificity before assigning an identity. The single listed isoform and methylation at UniProt position 189 do not, by themselves, explain extra bands.
UniProt lists asymmetric dimethylarginine at position 189, using UniProt sequence numbering. This modification is relevant when interpreting the protein, but its presence alone does not establish a visible shift or explain the ~50 kDa apparent band.
NKX6-1 is annotated as nuclear. A nuclear fraction is therefore relevant for detection; when comparing samples, use the same fraction and preparation approach throughout.
Compare them with the predicted 37.8 kDa mass and reported ~50 kDa band, then check specificity before assigning an identity. The single listed isoform and methylation at UniProt position 189 do not, by themselves, explain extra bands.
Boster reagents
NKX6-1 Western Blot Antibodies
Catalog antibodies with Western blot application and product-specific WB images. Evaluate suitability with the reported sample, controls and experimental conditions.
Real WB data
Anti-NKX6-1 Antibody Picoband®
Cat # A05760-1
A05760-1 is listed for human, mouse, and rat NKX6-1 Western blots. Its WB image includes human cell lines and rat and mouse brain and stomach lysates. The reported band is approximately 50 kDa, versus an expected 38 kDa.
Which to pick: A05760-1 is the only listed option and has a WB image. Its caption reports testing in human 293T, U2OS, and U251 cells and rat and mouse brain and stomach; consider the 50 kDa observed versus 38 kDa expected band when interpreting results.
Source: BosterBio NKX6-1 gene-info card — filtered to Western-blot-capable antibodies; each card shows that product's actual WB validation figure.
References
- UniProt Consortium. UniProt entry P78426.
- Human Protein Atlas. NKX6-1 tissue expression.
- PMC9338237 — target-verified WB comparison
- PMC5991669 — target-verified WB comparison
- PMC8036392 — target-verified WB comparison