This website uses cookies to ensure you get the best experience on our website.
- Table of Contents
OLIG1 · Western blot design guide
Design a Western Blot for OLIG1
Real validated OLIG1 Western blot protocols, expected-band and isoform facts, troubleshooting for weak or shifted signal, and recommended anti-OLIG1 WB antibodies. Everything you need to plan the experiment before you commit precious samples.
Last reviewed: May 2026 · Scientific review: Boster Bio technical team
OLIG1 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 | ~27.9 kDa | |
| Observed band | ~28 kDa | |
| Gel | 12–15% | |
| Negative control | siRNA / KO lysate |
Important caveats
Reasons your observed band may differ from the expected size.
| PTM | — | |
| Caveat | — | |
| Regulation | IFN-γ-induced | |
| Isoform | 1 isoform(s) |
Section 1
Real Curated OLIG1 Western Blot Protocols
Literature-validated Western blot parameters for OLIG1 — gel percentage, transfer, blocking, antibody incubation and detection, extracted from published methods.
| Sample / lysate | rat brain , Lane 2: mouse brain . After Electrophoresis, proteins were transferred to a Nitrocellulose membrane at 150mA for 50-90 minutes. Blocked the membrane with 5% Non-fat Milk/ TBS for 1.5 hour at RT. The membrane was incubated with rabbit anti-Olig1 antigen affinity purified polyclonal antibody (Catalog # A06108-3) at 0.5 μg/mL overnight at 4°C, then washed with TBS-0.1%Tween 3 times with 5 minutes each and probed with a goat anti-rabbit IgG-HRP secondary antibody at a dilution of 1:5000 for 1.5 hour at RT. The signal is developed using an Enhanced Chemiluminescent detection (ECL) kit (Catalog # EK1002) with Tanon 5200 system. A specific band was detected for Olig1 at approximately 28KD. The expected band size for Olig1 is at 28KD |
| Gel % | 12–15% |
| Load | 50ug |
| Transfer | nitrocellulose membrane, 150 mA, 50–90 min |
| Membrane | nitrocellulose |
| Blocking | 5% non-fat milk / TBS, 1.5 h RT |
| Primary antibody | 0.5 µg/mL |
| Primary incubation | overnight at 4 °C |
| Secondary antibody | goat anti-rabbit IgG-HRP, 1:5000 |
| Wash | TBS-0.1% Tween, 3 × 5 min |
| Detection | ECL |
| Exposure / imaging | Tanon 5200 |
| Observed band | 28 kDa |
Section 2
What Is the Expected OLIG1 Western Blot Band Size?
OLIG1 has a 27.9 kDa predicted mass and runs at the same ~28 kDa on blots, since it lacks glycosylation, disulfide dimerization, or cleavage that would shift its size.
| single sharp band at ~28 kDa | matches OLIG1's predicted 27.9 kDa mass, with no glycosylation, cleavage, or dimerization to shift it |
| band present in nuclear-enriched fraction, weak or absent in cytoplasmic-only prep | OLIG1 is a nuclear DNA-binding transcription factor, so it concentrates in the nuclear compartment |
| band position unchanged between reducing and non-reducing conditions | OLIG1 has no annotated disulfide bonds, so it does not form a covalent inter-chain dimer |
| no diffuse high-molecular-weight smear above the main band | OLIG1 has no annotated glycosylation sites, so there is no glycoform heterogeneity to broaden the band |
| single band only, no doublet or ladder of bands | UniProt lists only one OLIG1 isoform and no signal peptide or propeptide, so no splice variants or cleaved fragments are expected |
💡Expected OLIG1 appearanceOLIG1 runs as a single clean band at ~28 kDa, matching its predicted 27.9 kDa mass, since it has no glycosylation, cleavage, or dimerization to shift it.
| predicted mass (27.9 kDa / 271 aa) | sets the baseline expected band at ~28 kDa, consistent with the empirically observed band |
| absence of glycosylation sites | no glycoform smearing or upward mass shift; band stays sharp near the predicted size |
| absence of disulfide bonds or homodimer formation | no covalent dimer forms, so no higher-molecular-weight doublet appears even under non-reducing conditions |
| single annotated isoform, no signal peptide or propeptide | no alternative splice bands or precursor/mature cleavage products; only one full-length species is expected |
| Situation | Likely cause | Next action |
|---|---|---|
| No band in lysate | OLIG1 is a nuclear transcription factor restricted to oligodendrocyte-lineage cells, and standard whole-cell lysis can under-recover nuclear proteins | use lysate from an OLIG1-expressing source (e.g. brain or oligodendrocyte precursor tissue) or a nuclear extraction protocol, and increase protein loading |
| Band higher than expected | incomplete denaturation or nonspecific cross-reactivity, since OLIG1 has no disulfide bonds so a true higher-mass dimer is not expected | confirm complete reduction and denaturation with fresh reducing agent and adequate boiling, and check specificity against a knockout or knockdown control |
| Band lower than expected | proteolytic degradation during lysate preparation, since OLIG1 has no propeptide so a smaller band is not a normal processing product | add fresh protease inhibitors, keep samples cold throughout, and minimize freeze-thaw cycles |
| Multiple bands | nonspecific antibody binding, since UniProt annotates only one OLIG1 isoform so extra bands are not expected splice variants | validate the specific band using a positive control lysate alongside a blocking peptide or knockout/knockdown lysate |
| Weak or no signal | OLIG1 is a low-abundance nuclear transcription factor that can be under-represented in standard whole-cell extracts | use a nuclear extraction method, load more total protein, and extend primary antibody incubation time |
Experiment evidence
Western blot images showing OLIG1 band
A06108-3 · OLIG1
PA2213 · OLIG1
← swipe / scroll for more images →
Real WB data behind the band-size expectations in this section.
Sample controls for OLIG1 Western blot
🧪For positive controls for OLIG1 in Western blot, you can use brain tissue or oligodendrocyte-lineage cells, consistent with OLIG1's known role as an oligodendrocyte transcription factor, since no Human Protein Atlas expression data are available for this gene.
Positive control: Brain tissue (oligodendrocytes)
Negative control: No HPA data available; use siRNA knockdown or KO line
Loading controls: Run GAPDH and β-actin antibody blots alongside a total-protein stain (stain-free, Ponceau, or REVERT) as loading controls.
⚠️Feasibility: No HPA expression data exist for OLIG1, so tissue-based positive/negative controls are unconfirmed and should be validated with an siRNA knockdown or CRISPR KO line given its expected nuclear, lineage-restricted expression.
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.
Positive expression · recommended positive controls
| Tissue | Cell type | Level | Evidence | Source |
|---|
Undetected expression · recommended negative controls
| Tissue | Cell type | Level | Evidence | Source |
|---|
Section 3
Advanced OLIG1 Western Blot Tips
Deeper troubleshooting and optimisation questions for OLIG1, answered from its protein features.
Why does OLIG1 typically run at its predicted 28 kDa mass?
OLIG1 has no annotated glycosylation, disulfide bonds, or post-translational modifications, so the ~28 kDa observed band aligns closely with the 27.9 kDa predicted mass; minimal shift is expected on standard SDS-PAGE.
Could isoforms produce additional OLIG1 bands?
UniProt lists a single OLIG1 isoform, so extra bands are unlikely to represent alternative splicing; unexpected bands more likely reflect nonspecific antibody binding or degradation products.
Are post-translational modifications likely to shift OLIG1 mobility?
No modified residues, glycosylation, or disulfide bonds are annotated for OLIG1, so PTM-driven mobility shifts are not expected; a single band near 28 kDa is the typical result on a reducing gel.
How should blocking be optimized for OLIG1 detection?
As a nuclear DNA-binding transcription factor, OLIG1 is typically expressed at low abundance; use 5% non-fat milk or BSA blocking with extended incubation to minimize background from nuclear extract proteins while preserving epitope detection.
What transfer method to use for OLIG1 Western blot?
At ~28 kDa, OLIG1 transfers efficiently using standard wet or semi-dry transfer with a 0.2 micron PVDF or nitrocellulose membrane; shorter transfer times suit this small, low-molecular-weight nuclear protein.
What loading control suits OLIG1 quantitation?
Since OLIG1 localizes to the nucleus, pair it with a nuclear loading control such as Lamin B1 or Histone H3 rather than a cytoplasmic control like GAPDH, ensuring accurate normalization of nuclear-enriched lysates.
Is OLIG1 expression induced during a specific process?
OLIG1 is annotated as a developmental protein involved in oligodendrocyte transcriptional regulation; expression is expected to increase during oligodendrocyte lineage specification and differentiation rather than being constitutively high across all tissues.
How to interpret unexpected extra bands on OLIG1 blots?
With no isoforms, oligomeric state, or PTMs annotated, extra bands likely indicate nonspecific antibody cross-reactivity, incomplete nuclear lysate denaturation, or degradation; validate specificity with a knockout, knockdown, or peptide-competition control.
Boster reagents
Best OLIG1 Western Blot Antibodies
BosterBio's OLIG1 antibodies are among the best-performing WB antibodies on the market — well cited, thoroughly validated, and orthogonally cross-validated against negative tissues and complementary methods.
Real WB data
Anti-Olig1 Antibody Picoband®
Cat # A06108-3
Real WB data
Anti-Olig1 Antibody Picoband®
Cat # PA2213
Both anti-OLIG1 antibodies below are top-performing, frequently cited choices with thorough validation: each ships with its own western blot image confirming specificity, cross-checked against predicted molecular weight and characterized cell lysates for reliable, reproducible OLIG1 detection.
Which to pick: Both A06108-3 and PA2213 include real western blot validation images. PA2213 shows confirmed reactivity in human U87 and HeLa lysates at the predicted 28kD size, making it ideal for human samples; A06108-3 offers direct Olig1-specific western blot evidence for general use.
Source: BosterBio OLIG1 gene-info card — filtered to Western-blot-capable antibodies; each card shows that product's actual WB validation figure.
References
- UniProt Consortium. UniProt entry Q8TAK6.
- Human Protein Atlas. OLIG1 tissue expression.