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SCN11A · Western blot design guide
Design a Western Blot for SCN11A
Real validated SCN11A Western blot protocols, expected-band and isoform facts, troubleshooting for weak or shifted signal, and recommended anti-SCN11A WB antibodies. Everything you need to plan the experiment before you commit precious samples.
Last reviewed: May 2026 · Scientific review: Boster Bio technical team
SCN11A 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 | ~204.9 kDa | |
| Observed band | ~250 kDa | |
| Gel | 4–12% gradient | |
| Negative control | siRNA / KO lysate |
Important caveats
Reasons your observed band may differ from the expected size.
| PTM | Glycosylated + Phosphorylated | |
| Caveat | Heavy N-glycosylation | |
| Regulation | LPS-induced | |
| Isoform | 3 isoform(s) |
Section 1
Real Curated SCN11A Western Blot Protocols
Literature-validated Western blot parameters for SCN11A — gel percentage, transfer, blocking, antibody incubation and detection, extracted from published methods.
| Sample / lysate | human PC-3 , Lane 2: rat brain , Lane 3: rat kidney , Lane 4: rat C6 , Lane 5: mouse spleen , Lane 6: mouse brain , Lane 7: mouse kidney . 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-SCN11A antigen affinity purified polyclonal antibody (Catalog # A04126) 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 1:10000 for 1.5 hour at RT. The signal is developed using an Enhanced Chemiluminescent detection (ECL) kit (Catalog # EK1002) with Tanon 5200 system. Specific bands were detected for SCN11A at approximately 250KD. The expected band size for SCN11A is at 205KD |
| Gel % | 4–12% gradient |
| 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, 1:10000 |
| Wash | TBS-0.1% Tween, 3 × 5 min |
| Detection | ECL |
| Exposure / imaging | Tanon 5200 |
| Observed band | 250 kDa |
Section 2
What Is the Expected SCN11A Western Blot Band Size?
SCN11A has a 204.9 kDa predicted backbone but runs near 250 kDa on blots, mainly due to N-glycosylation at its 8 glycosylation sites.
| Predominant band near 250 kDa | corresponds to the mature, glycosylated channel migrating above its 204.9 kDa predicted mass |
| Broad or diffuse band rather than a crisp line | uneven glycan occupancy across the 8 N-glycosylation sites produces glycoform heterogeneity |
| Extra band(s) at a slightly different apparent size | the three annotated splice isoforms (1, 2, 3) can each generate a distinct-migrating species |
| Faint lower band near 205 kDa | represents an underglycosylated or immature core polypeptide close to the unmodified predicted backbone |
| Minor mobility shift between reducing and non-reducing samples | the two intra-chain disulfide bonds (Cys283-Cys322, Cys776-Cys787) affect folding-dependent migration without indicating dimer formation |
💡Expected SCN11A appearanceExpect a predominant, somewhat diffuse SCN11A band at approximately 250 kDa in membrane-containing lysates, above the 204.9 kDa predicted mass, reflecting added mass from N-glycosylation at its 8 glycosylation sites.
| Predicted backbone mass (204.9 kDa) | sets the baseline unmodified size before any post-translational additions |
| N-glycosylation at 8 sites (e.g. Asn290, Asn338, Asn781, Asn1209) | adds mass and shifts the apparent band upward toward the ~250 kDa observed size |
| Splice isoforms 1, 2, 3 | can each run at a slightly different apparent molecular weight, producing extra bands in some tissues |
| Intra-chain disulfide bonds (Cys283-Cys322, Cys776-Cys787) | influence folding-dependent migration and can cause minor shifts between reducing and non-reducing conditions |
| Non-glycosylated recombinant or bacterial standard | runs closer to the 204.9 kDa predicted backbone, lower than the native glycosylated ~250 kDa band |
| Situation | Likely cause | Next action |
|---|---|---|
| Band higher than expected | the native channel carries N-glycans at 8 sites, adding mass above the 204.9 kDa predicted backbone | compare against the ~250 kDa empirical band and confirm identity with PNGase F treatment, which shifts the band down |
| Broad smear instead of sharp band | heterogeneous glycan occupancy across the 8 N-glycosylation sites yields a range of co-migrating glycoforms | run a lower-percentage gel with a longer separation or deglycosylate with PNGase F to sharpen the band |
| Multiple bands | three annotated splice isoforms (1, 2, 3) can be co-expressed within the same tissue | check isoform-specific exon usage in the tissue and confirm which band overlaps the antibody's epitope region |
| Weak or no signal | SCN11A is a large, low-abundance multi-pass membrane ion channel that can transfer poorly at this size | increase protein load, extend transfer time, and use a low-percentage gel suited to a ~250 kDa membrane protein |
| No band in lysate | insufficient solubilization of the multi-pass membrane protein when lysis buffer lacks adequate detergent | use a membrane-protein-optimized detergent lysis buffer and enrich the membrane fraction before loading |
Experiment evidence
Western blot images showing SCN11A band
A04126 · SCN11A
← swipe / scroll for more images →
Real WB data behind the band-size expectations in this section.
Sample controls for SCN11A Western blot
🧪For positive controls for SCN11A in Western blot, you can use a cell line transiently or stably transfected to overexpress SCN11A, since no positive tissue or cell line expression data is available in HPA.
Positive control: SCN11A-overexpressing transfected cell line
Negative control: non-transfected (parental) cell line
Loading controls: Also probe for GAPDH and β-actin as loading controls, and include a total-protein stain (stain-free gel, Ponceau S, or REVERT) to confirm equal loading and transfer.
⚠️Feasibility: No HPA tissue expression data exist for SCN11A, so a validated endogenous positive/negative tissue pair cannot be identified, and a heterologous overexpression/parental-cell-line pair should be used instead.
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 SCN11A Western Blot Tips
Deeper troubleshooting and optimisation questions for SCN11A, answered from its protein features.
Why does SCN11A run near 250 kDa instead of predicted 205 kDa?
SCN11A carries 8 predicted N-glycosylation sites; as a multi-pass membrane glycoprotein it retains SDS-resistant secondary structure and bound carbohydrate, both of which slow migration relative to its 204.9 kDa unmodified mass, producing the ~250 kDa apparent band typically observed.
Could the 3 SCN11A isoforms cause multiple bands?
UniProt lists three annotated isoforms (1, 2, 3) generated by alternative splicing. If your antibody epitope is common to all, expect the possibility of additional bands at different apparent sizes; confirm the epitope's isoform coverage before interpreting extra bands as nonspecific.
Does glycosylation affect SCN11A migration or detection?
With 8 annotated glycosylation sites, SCN11A is a heavily glycosylated membrane glycoprotein. Variable glycosylation between tissues or cell lines can shift apparent MW and cause band smearing; treat lysate with PNGase F if a sharper single band is needed for quantitation.
How should I optimize blocking for SCN11A blots?
Because SCN11A is a heavily glycosylated cell-membrane protein, avoid lectin-binding blockers; use BSA rather than milk to reduce background from glycan-lectin interactions, and block membranes for a standard 1 hour at room temperature before primary antibody incubation.
What transfer method to use for SCN11A Western blot?
SCN11A is a large (~205-250 kDa) multi-pass membrane protein, so use wet transfer with a low-percentage acrylamide gel (6-7%), extended transfer time, and inclusion of SDS in transfer buffer to aid elution of this hydrophobic, high-MW protein.
How should SCN11A band intensity be normalized?
As a multi-pass membrane protein enriched in membrane fractions, SCN11A abundance may not track with cytosolic housekeeping proteins like GAPDH; use total protein normalization or a membrane-resident loading control for accurate quantitation.
What explains extra bands below the main SCN11A band?
SCN11A contains 2 disulfide bonds; running under non-reducing conditions can produce altered mobility or additional species compared to reducing conditions. Partial proteolytic degradation of this large membrane protein during lysis can also generate lower-MW fragments; use fresh lysates with protease inhibitors and reducing sample buffer for consistent results.
Boster reagents
Best SCN11A Western Blot Antibodies
BosterBio's SCN11A 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-SCN11A Antibody Picoband®
Cat # A04126
Our recommended anti-SCN11A antibody is a best-performing, extensively cited reagent, thoroughly validated for Western blot specificity and orthogonally cross-validated against negative tissue controls and complementary detection methods, ensuring confident, reproducible detection of SCN11A across experimental systems.
Which to pick: Only one SCN11A antibody is catalogued, A04126, which includes an actual Western blot validation image on 5-20% SDS-PAGE, so it is the clear and only choice for reliable SCN11A detection in your experiments.
Source: BosterBio SCN11A gene-info card — filtered to Western-blot-capable antibodies; each card shows that product's actual WB validation figure.
References
- UniProt Consortium. UniProt entry Q9UI33.
- Human Protein Atlas. SCN11A tissue expression.