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- Table of Contents
INHBB / Inhibin beta B chain · Western blot design guide
Design a Western Blot for INHBB
Source-linked INHBB Western blot protocol options, expected-band and isoform facts, troubleshooting for weak or shifted signal, and recommended anti-INHBB 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
INHBB Western Blot Experimental Design Guide
Expected bands, source-linked protocol options, controls and antibodies — the at-a-glance facts below, then the full design guide.
Must know before running
| Expected band | ~45.1 kDa | |
| Gel | 15% (standard starting point) | |
| Negative control | Suggested KO / knockdown lysate |
Important caveats
Reasons your observed band may differ from the expected size.
| PTM | Glycosylated + Cleaved | |
| Caveat | Disulfide-linked dimers | |
| Gene-set association | MSigDB Hallmark membership | |
| Isoform | 1 isoform(s) |
Section 1
Source-Linked INHBB Western Blot Protocol Options
The M03838 protocol combines labelled catalog values with standard starting conditions. Published comparisons retain their own sample, reagent and detection scope.
| Sample / lysate | Mouse brain lysate (catalog M03838) |
| Gel % | 15% (standard starting point) |
| Load | 20–30 µg total protein per lane; optimize for abundance (standard starting point) |
| Transfer | Short semi-dry transfer; verify retention (standard starting point) |
| Membrane | 0.2 µm PVDF (standard starting point) |
| Blocking | 5% milk or 5% BSA in TBST (standard starting point) |
| Primary antibody | M03838; use the WB datasheet starting dilution (standard starting point) |
| Primary incubation | Overnight at 4 °C (standard starting point) |
| Secondary antibody | Species-matched HRP conjugate at validated dilution (standard starting point) |
| Secondary incubation | 1 h at room temperature (standard starting point) |
| Wash | 3 × 5 min in TBST (standard starting point) |
| Detection | ECL; bracket exposures to avoid saturation (standard starting point) |
Section 2
What Is the Expected INHBB Western Blot Band Size?
UniProt predicts a 45.1 kDa precursor; cleavage, Asn93 glycosylation, and disulfide-linked dimers may affect migration, but no empirical band size is supplied.
| Band near 45.1 kDa | Consistent with the full-length precursor; band identity requires confirmation |
| Band below 45.1 kDa | May reflect signal peptide and propeptide cleavage |
| Band near twice the corresponding monomer size under non-reducing conditions | May reflect disulfide-linked activin B, a beta-B homodimer |
| Little or no band in whole-cell lysate | Consistent with secretion of INHBB |
💡Expected INHBB appearanceUniProt predicts 45.1 kDa for the full-length precursor; cleavage may produce a smaller mature band, but no empirical band size or migration pattern is supplied, so confirm band identity experimentally.
| Predicted full-length mass | Places the uncleaved precursor near 45.1 kDa by sequence |
| N-linked glycosylation at Asn93 | May affect precursor migration, but a visible shift is not established; Asn93 lies in the propeptide |
| Signal peptide cleavage at residues 1–28 | Removes part of the precursor and may lower its apparent size |
| Propeptide cleavage at residues 29–292 | Produces a smaller mature beta-B chain than the full-length precursor |
| Disulfide-linked activin B homodimer | May migrate near twice the corresponding monomer size without complete reduction |
| Situation | Likely cause | Next action |
|---|---|---|
| No band in lysate | INHBB is secreted | Check conditioned medium alongside lysate and include a positive control |
| Band higher than expected | Disulfide-linked beta-B homodimer may persist | Compare reducing and non-reducing samples |
| Band lower than expected | Signal peptide and propeptide cleavage may yield mature beta-B | Compare with a validated positive control and check which protein region the antibody recognizes |
| Multiple bands | Precursor, cleaved forms, or disulfide-linked species may coexist | Compare reducing conditions and confirm candidate bands with an independent antibody |
| Broad smear instead of sharp band | Variable N-linked glycosylation at Asn93 is possible but unproven | Compare matched samples before and after N-glycan removal and verify specificity |
| Fragments below expected size | Propeptide cleavage can produce a smaller mature chain | Check antibody epitope location and compare with a validated positive control |
Experiment evidence
Western blot images showing INHBB band
M03838 · INHBB
← swipe / scroll for more images →
Real WB data behind the band-size expectations in this section.
Sample controls for INHBB Western blot
🧪For positive controls for INHBB in Western blot, you can use conditioned medium from a separately validated INHBB-expressing cell line; the supplied HPA evidence identifies no positive tissue or cell.
Positive control: No high/medium HPA tissue identified
Negative control: Suggested KO / knockdown lysate
Loading controls: Run GAPDH, β-actin, and a total-protein stain such as Ponceau alongside the samples.
⚠️Feasibility: INHBB is secreted, so conditioned medium may give a stronger signal than whole-cell lysate; HPA provides no tissue control candidates.
HPA tissue expression evidence for INHBB
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 |
|---|---|---|---|---|
| No high/medium HPA tissues identified in the supplied evidence. | ||||
Lower expression tissues · IHC evidence, not confirmed WB-negative controls
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| No lower-expression tissue rows available in the supplied evidence. | ||||
Section 3
Advanced INHBB Western Blot Tips
Deeper troubleshooting and optimisation questions for INHBB, answered from its protein features.
How should INHBB 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.
Do annotated isoforms explain multiple INHBB bands?
Isoforms · Only one isoform is supplied, with no alternative sequence. The supplied isoform evidence therefore does not account for multiple bands. Consider the annotated processing, glycosylation, and disulfide-linked dimers when evaluating them.
Can glycosylation explain a higher INHBB band?
PTM · UniProt lists one N-linked glycosylation site at Asn93, within the annotated propeptide (29–292). Its presence alone does not establish a visible shift. First determine which processed form the antibody detects before attributing a band difference to glycosylation.
Does this guide establish induction of INHBB?
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 INHBB?
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 M03838 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 INHBB bands be quantified?
Quantitation · Quantify a consistently identified band under matched sample and reducing conditions. INHBB can be processed and can form disulfide-linked dimers with different partners; combining intensities from distinct bands could obscure which form changed. The supplied features do not identify a band suitable for quantitation.
Why might an INHBB band differ from the predicted 45.1 kDa?
Interpretation · The 45.1 kDa prediction refers to the 407-residue sequence. INHBB has a signal peptide at residues 1–28 and a propeptide at 29–292, so processed forms need not match the full-length prediction. No observed band size is supplied; these features alone cannot explain a specific difference.
INHBB is annotated with a signal peptide at residues 1–28 and a propeptide at 29–292. Bands could represent different processing states. Interpret them against the antibody’s recognized region; the supplied features do not assign an observed band to any particular state.
UniProt lists five disulfide bonds and describes INHBB as dimeric, linked by one or more disulfide bonds. Compare reducing and nonreducing samples when interpreting possible linked species. INHBB can occur in inhibin B, activin B, or activin AB, so band position alone cannot identify the partner.
INHBB is annotated as secreted and has a signal peptide at residues 1–28. If examining cultured cells, include the conditioned medium when looking for secreted INHBB. A cell lysate and medium may contain different processing states, so interpret their bands separately.
INHBB is annotated with a signal peptide at residues 1–28 and a propeptide at 29–292. Bands could represent different processing states. Interpret them against the antibody’s recognized region; the supplied features do not assign an observed band to any particular state.
UniProt lists five disulfide bonds and describes INHBB as dimeric, linked by one or more disulfide bonds. Compare reducing and nonreducing samples when interpreting possible linked species. INHBB can occur in inhibin B, activin B, or activin AB, so band position alone cannot identify the partner.
INHBB is annotated as secreted and has a signal peptide at residues 1–28. If examining cultured cells, include the conditioned medium when looking for secreted INHBB. A cell lysate and medium may contain different processing states, so interpret their bands separately.
Boster reagents
INHBB 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-Inhibin beta B Rabbit Monoclonal Antibody
Cat # M03838
The catalog reports one anti-INHBB antibody for Western blotting: M03838, a rabbit monoclonal with stated human, mouse, and rat reactivity. Its supplied WB image shows mouse brain lysate; no other sample validation is provided.
Which to pick: M03838 is the only listed option. Choose it if its stated reactivity fits your sample, bearing in mind that the supplied WB image documents mouse brain lysate only.
Source: BosterBio INHBB gene-info card — filtered to Western-blot-capable antibodies; each card shows that product's actual WB validation figure.
References
- UniProt Consortium. UniProt entry P09529.
- Human Protein Atlas. INHBB tissue expression.
- PMC10585924 — target-verified WB comparison
- PMC10239411 — target-verified WB comparison
- PMC9817897 — target-verified WB comparison