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- Table of Contents
USP14 / Ubiquitin carboxyl-terminal hydrolase 14 · Western blot design guide
Design a Western Blot for USP14
Real validated USP14 Western blot protocols, expected-band and isoform facts, troubleshooting for weak or shifted signal, and recommended anti-USP14 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
USP14 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 | ~56.1 kDa | |
| Observed band | ~60 kDa | |
| Gel | 10% (catalog A03042-3) | |
| Positive control | Duodenum (IHC candidate; verify WB) +4 more | |
| Negative control | Oral mucosa (IHC candidate; verify WB) |
Important caveats
Reasons your observed band may differ from the expected size.
| PTM | Phosphorylated + Acetylated | |
| Caveat | Modification-state controls | |
| Gene-set association | MSigDB Hallmark membership | |
| Isoform | 3 isoform(s) |
Section 1
Real Curated USP14 Western Blot Protocols
The A03042-3 protocol combines labelled catalog values with standard starting conditions. Published comparisons retain their own sample, reagent and detection scope.
| Sample / lysate | human Hela, human 293T, human SK-OV-3 (catalog A03042-3) |
| Gel % | 10% (catalog A03042-3) |
| Load | 30 ug; reducing conditions (catalog A03042-3) |
| Transfer | a nitrocellulose membrane at 150 mA for 50-90 minutes (catalog A03042-3) |
| Membrane | nitrocellulose membrane (catalog A03042-3) |
| Blocking | 5% non-fat milk/TBS for 1.5 hour at RT (catalog A03042-3) |
| Primary antibody | A03042-3 · 0.5 μg/mL (catalog A03042-3) |
| Primary incubation | overnight at 4°C (catalog A03042-3) |
| Secondary antibody | goat anti-rabbit IgG-HRP, 1:5000 (catalog A03042-3) |
| Secondary incubation | 1.5 hour at RT (catalog A03042-3) |
| Wash | TBS-0.1%Tween 3 times with 5 minutes each (catalog A03042-3) |
| Detection | ECL (catalog A03042-3) |
Section 2
What Is the Expected USP14 Western Blot Band Size?
USP14 is predicted at 56.1 kDa and observed near 60 kDa; the cause of the difference is not established.
| Dominant band near 60 kDa | matches the empirical USP14 band; confirm identity with an antibody or depletion control |
| Band near 56 kDa | lies near the predicted full-length mass, but identity still needs confirmation |
| Additional bands at different positions | could reflect USP14 isoforms 1, 2, or 3; distinct migration is unverified |
| Band near twice the monomer size | could reflect a potential USP14 homodimer if it survives sample preparation |
💡Expected USP14 appearanceUSP14 has a predicted mass of 56.1 kDa and an empirical band near 60 kDa; confirm band identity with an antibody or depletion control because the cause of the difference is not established.
| Predicted USP14 mass | 56.1 kDa is the sequence-based reference; the observed band is near 60 kDa |
| Potential homodimer | could appear near twice the monomer size if retained during sample preparation |
| Isoform 1 | its mass relative to the other named isoforms is not supplied |
| Isoforms 2 and 3 | could migrate differently from isoform 1, but their masses and separation are unknown |
| Situation | Likely cause | Next action |
|---|---|---|
| Band higher than expected | a potential homodimer may survive sample preparation; this does not establish the cause of the 60 kDa band | compare denaturing conditions and confirm band identity with USP14 depletion |
| Band lower than expected | an alternative USP14 isoform is possible, but its mass is unknown | check with USP14 depletion and isoform-specific controls |
| Multiple bands | USP14 has three named isoforms, though distinct bands are unverified | test each band's response to USP14 depletion |
| Weak or no signal | the sample fraction may contain little cytoplasmic or peripheral membrane USP14 | check sample fractionation and include a positive lysate control |
| Broad smear instead of sharp band | USP14 has multiple phosphorylation sites, but a smear from them is unproven | compare phosphatase-treated samples and verify USP14 identity by depletion |
Experiment evidence
Western blot images showing USP14 band
A03042-3 · USP14
M03042 · USP14
← swipe / scroll for more images →
Real WB data behind the band-size expectations in this section.
Sample controls for USP14 Western blot
🧪HPA-IHC candidate guidance (verify in WB): For positive controls for USP14 in Western blot, you can use duodenum tissue lysate.
Positive control: Duodenum (IHC candidate; verify WB)
Negative control: Oral mucosa (IHC candidate; verify WB)
Loading controls: Run GAPDH, β-actin, and a total-protein stain alongside the samples.
⚠️Feasibility: A tissue control is feasible because USP14 is cytoplasmic and membrane-associated, and HPA reports high expression in duodenum and no detection in oral mucosa.
HPA tissue expression evidence for USP14
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 |
|---|---|---|---|---|
| Duodenum | glandular cells | High | Protein (IHC) | HPA → |
| Epididymis | glandular cells | High | Protein (IHC) | HPA → |
| Kidney | cells in glomeruli | High | Protein (IHC) | HPA → |
| Pancreas | exocrine glandular cells | High | Protein (IHC) | HPA → |
| Placenta | trophoblastic cells | High | Protein (IHC) | HPA → |
Lower expression tissues · IHC evidence, not confirmed WB-negative controls
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Oral mucosa | squamous epithelial cells | Not detected | Protein (IHC) | HPA → |
| Vagina | squamous epithelial cells | Not detected | Protein (IHC) | HPA → |
| Adipose tissue | adipocytes | Low | Protein (IHC) | HPA → |
| Bone marrow | hematopoietic cells | Low | Protein (IHC) | HPA → |
| Caudate | neuronal cells | Low | Protein (IHC) | HPA → |
Section 3
Advanced USP14 Western Blot Tips
Deeper troubleshooting and optimisation questions for USP14, answered from its protein features.
How should USP14 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 USP14 isoforms produce different bands?
Isoforms · UniProt lists three isoforms. Relative to the canonical sequence, isoform 3 lacks residues 55–65 and isoform 2 lacks residues 66–100. These differences could affect apparent band positions, but the features alone do not establish whether separate bands will be visible.
Which USP14 phosphorylation sites should I consider when interpreting bands?
PTM · The supplied UniProt coordinates list phosphothreonine at 52 and 235, and phosphoserine at 143, 148, 237, 302, and 432. These are canonical UniProt positions; other numbering conventions may differ. Their presence does not establish a visible band shift.
Yes. UniProt lists N6-acetyllysine at canonical position 449. Keep that coordinate convention explicit when comparing site-specific reagents or reports. The listed site alone does not establish a detectable change in band position.
Yes. UniProt lists N6-acetyllysine at canonical position 449. Keep that coordinate convention explicit when comparing site-specific reagents or reports. The listed site alone does not establish a detectable change in band position.
Does this guide establish induction of USP14?
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.
How should transfer be checked for USP14?
Transfer · Standard workflow guidance: verify transfer efficiency for the intended target size before interpreting a weak signal. Use total-protein assessment and optimize transfer for the membrane, gel and apparatus; the labelled catalog values take precedence.
How should blocking be optimized?
Blocking · Standard workflow guidance: follow the A03042-3 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 I quantify USP14 across samples?
Quantitation · Quantify the same defined band or bands consistently across samples. USP14 is reported in the cytoplasm and at the cell membrane as a peripheral membrane protein, and it associates with the 26S proteasome. Keep the sampled fraction consistent when comparing abundance.
Why might USP14 appear near 60 kDa instead of 56.1 kDa?
Interpretation · The predicted mass is 56.1 kDa, while the observed band is approximately 60 kDa. UniProt lists phosphorylation, acetylation, and alternative isoforms, but those features alone do not establish the cause of the apparent mass difference.
Check whether the band is consistent with the listed isoform deletions at canonical residues 55–65 or 66–100, while treating that as a possibility rather than an assignment. The supplied features do not identify every unexpected band or show that phosphorylation or acetylation produces a visible shift.
Check whether the band is consistent with the listed isoform deletions at canonical residues 55–65 or 66–100, while treating that as a possibility rather than an assignment. The supplied features do not identify every unexpected band or show that phosphorylation or acetylation produces a visible shift.
Boster reagents
USP14 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-USP14 Antibody Picoband®
Cat # A03042-3
Real WB data
Anti-USP14 Rabbit Monoclonal Antibody
Cat # M03042
The catalog reports A03042-3 (rabbit polyclonal) and M03042 (rabbit monoclonal) for human, mouse, and rat USP14 Western blots. Each product image shows a band near 60 kDa, compared with an expected 56 kDa. Independent validation is not supplied.
Which to pick: Both have WB images with named human, rat, and mouse lysates. A03042-3 includes heart tissue, Jurkat, and NIH/3T3 examples; M03042 includes U251, RH35, Neuro-2a, and Raw264.7 examples. Otherwise, choose by polyclonal or monoclonal format.
Source: BosterBio USP14 gene-info card — filtered to Western-blot-capable antibodies; each card shows that product's actual WB validation figure.
References
- UniProt Consortium. UniProt entry P54578.
- Human Protein Atlas. USP14 tissue expression.
- PMC10683613 — target-verified WB comparison
- PMC10110470 — target-verified WB comparison
- PMC3709700 — target-verified WB comparison