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- Table of Contents
GDF3 / Growth/differentiation factor 3 · Western blot design guide
Design a Western Blot for GDF3
Source-linked GDF3 Western blot protocol options, expected-band and isoform facts, troubleshooting for weak or shifted signal, and recommended anti-GDF3 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
GDF3 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 | ~41.4 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 | Processing-state controls | |
| Gene-set association | MSigDB C7 membership | |
| Isoform | 1 isoform(s) |
Section 1
Source-Linked GDF3 Western Blot Protocol Options
The A06869 protocol combines labelled catalog values with standard starting conditions. Published comparisons retain their own sample, reagent and detection scope.
| Sample / lysate | Target-positive lysate and matched negative control (standard starting point) |
| 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 | A06869; 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 GDF3 Western Blot Band Size?
GDF3 has a predicted 41.4 kDa precursor; cleavage and N-linked glycosylation could affect migration, but no empirical band size demonstrates either effect.
| Band near 41.4 kDa | Consistent with the predicted GDF3 precursor; confirm identity with controls |
| Band below 41.4 kDa | May reflect cleavage of the signal peptide or propeptide |
| Band above 41.4 kDa | N-linked glycosylation at Asn112 or Asn306 may affect migration |
| Multiple bands at different sizes | May reflect precursor and processed GDF3; band identities require confirmation |
💡Expected GDF3 appearanceThe predicted 41.4 kDa mass is for the GDF3 precursor; processing and N-linked glycosylation may affect migration, but no empirical band size is supplied, so confirm band identity with appropriate controls.
| Predicted precursor mass | 41.4 kDa is the sequence-based reference, not a measured band |
| N-linked glycosylation at Asn112 | May alter apparent size if this site is occupied |
| N-linked glycosylation at Asn306 | May alter apparent size if this site is occupied |
| Signal peptide and propeptide cleavage | Processed GDF3 may run below the precursor; its band size is not supplied |
| Situation | Likely cause | Next action |
|---|---|---|
| Band higher than expected | N-linked glycosylation may alter migration | Compare treated and untreated samples and confirm band identity |
| Band lower than expected | Signal peptide or propeptide cleavage may produce a smaller form | Compare antibodies recognizing precursor and processed regions |
| Broad smear instead of sharp band | Variable N-linked glycosylation is possible | Compare treated and untreated samples to test whether glycosylation contributes |
| Multiple bands | Precursor and processed forms may coexist | Check band identity with region-specific antibodies or GDF3 depletion |
| Weak or no signal | GDF3 is found in both cytoplasm and secreted material | Check the cellular and conditioned-medium fractions with positive and negative controls |
Experiment evidence
Western blot images showing GDF3 band
A06869 · GDF3
A06869 · GDF3
A06869 · GDF3
M06869 · GDF3
← swipe / scroll for more images →
Real WB data behind the band-size expectations in this section.
Sample controls for GDF3 Western blot
🧪For positive controls for GDF3 in Western blot, you can use an HPA-IHC candidate positive sample once identified; none is provided in the supplied evidence.
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: HPA provides no tissue controls, and GDF3 is secreted but mainly accumulates in the cytoplasm.
HPA tissue expression evidence for GDF3
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 GDF3 Western Blot Tips
Deeper troubleshooting and optimisation questions for GDF3, answered from its protein features.
How should GDF3 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.
Are alternative GDF3 isoforms expected?
Isoforms · The supplied UniProt record lists one isoform and no alternative sequence. It provides no basis for assigning multiple bands to splice isoforms; consider the annotated processing and glycosylation sites when evaluating them.
How might glycosylation affect GDF3 bands?
PTM · UniProt lists N-linked glycosylation at Asn112 and Asn306, using UniProt sequence numbering. Asn112 lies in the annotated propeptide; Asn306 lies beyond it. These sites identify possible modified regions but do not establish the size or visibility of any band shift.
Does this guide establish induction of GDF3?
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 GDF3?
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 A06869 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 GDF3 be quantified?
Quantitation · Standard workflow guidance: quantify only a validated target band within the linear exposure range. Use consistent sample preparation and loading, retain biological replicates, and avoid interpreting saturation or loading differences as regulation.
Should GDF3 run at its predicted 41.4 kDa?
Interpretation · 41.4 kDa is the predicted mass of the full-length 364-residue protein. UniProt lists a signal peptide at residues 1–24 and a propeptide at 25–250, so processed forms may differ in mass. No observed band size is supplied; these features alone cannot predict a visible shift.
UniProt annotates a signal peptide at residues 1–24 and a propeptide at 25–250. When interpreting a band, check whether the antibody targets a region retained in the form you intend to detect. These coordinates use UniProt numbering.
UniProt reports GDF3 in both the cytoplasm and secreted fraction, with a note that it mainly accumulates in the cytoplasm. Choose the fraction that matches the question being measured, and compare samples within that fraction consistently.
UniProt describes potential homodimers or heterodimers but states that GDF3 cannot be disulfide-linked. The three annotated disulfide bonds do not support assigning a higher band to a disulfide-linked GDF3 dimer.
Compare bands with the full-length 41.4 kDa prediction, signal peptide 1–24, propeptide 25–250, and N-linked sites Asn112 and Asn306. Check whether the antibody target is present in a proposed processed form. The supplied record gives no observed band size, so band identity needs experimental confirmation.
UniProt annotates a signal peptide at residues 1–24 and a propeptide at 25–250. When interpreting a band, check whether the antibody targets a region retained in the form you intend to detect. These coordinates use UniProt numbering.
UniProt reports GDF3 in both the cytoplasm and secreted fraction, with a note that it mainly accumulates in the cytoplasm. Choose the fraction that matches the question being measured, and compare samples within that fraction consistently.
UniProt describes potential homodimers or heterodimers but states that GDF3 cannot be disulfide-linked. The three annotated disulfide bonds do not support assigning a higher band to a disulfide-linked GDF3 dimer.
Compare bands with the full-length 41.4 kDa prediction, signal peptide 1–24, propeptide 25–250, and N-linked sites Asn112 and Asn306. Check whether the antibody target is present in a proposed processed form. The supplied record gives no observed band size, so band identity needs experimental confirmation.
Boster reagents
GDF3 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-GDF-3 Antibody
Cat # A06869
Real WB data
Anti-GDF3 Rabbit Monoclonal Antibody
Cat # M06869
Two the supplier anti-GDF3 antibodies list Western blot images: A06869 with L929 cells and M06869 with 293T cell lysate. These captions document the shown sample contexts; no independent validation evidence is supplied.
Which to pick: Choose A06869 for listed Human or Mouse reactivity, with a WB image from L929 cells. Choose M06869 if listed Rat reactivity matters; its WB image uses 293T cell lysate. Both have WB images, so use the sample context relevant to your experiment.
Source: BosterBio GDF3 gene-info card — filtered to Western-blot-capable antibodies; each card shows that product's actual WB validation figure.
References
- UniProt Consortium. UniProt entry Q9NR23.
- Human Protein Atlas. GDF3 tissue expression.
- PMC5622476 — target-verified WB comparison
- PMC12075709 — target-verified WB comparison
- PMC2972255 — target-verified WB comparison