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- Table of Contents
RARG / Retinoic acid receptor gamma · Western blot design guide
Design a Western Blot for RARG
Source-linked RARG Western blot protocol options, expected-band and isoform facts, troubleshooting for weak or shifted signal, and recommended anti-RARG 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
RARG 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 | ~50.3 kDa | |
| Gel | 12–15% (standard starting point) | |
| Positive control | Cerebellum (IHC candidate; verify WB) +4 more | |
| Negative control | Suggested KO / knockdown lysate |
Important caveats
Reasons your observed band may differ from the expected size.
| PTM | Methylated + Ubl conjugation | |
| Caveat | Modification-state controls | |
| Gene-set association | MSigDB C7 membership | |
| Isoform | 4 isoform(s) |
Section 1
Source-Linked RARG Western Blot Protocol Options
The M04250-1 protocol combines labelled catalog values with standard starting conditions. Published comparisons retain their own sample, reagent and detection scope.
| Sample / lysate | HeLa cell lysate (catalog M04250-1) |
| Gel % | 12–15% (standard starting point) |
| Load | 20–30 µg total protein per lane; optimize for abundance (standard starting point) |
| Transfer | Standard semi-dry transfer; verify efficiency (standard starting point) |
| Membrane | 0.45 µm PVDF (standard starting point) |
| Blocking | 5% milk or 5% BSA in TBST (standard starting point) |
| Primary antibody | M04250-1; 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 RARG Western Blot Band Size?
RARG is predicted at 50.3 kDa; isoforms and homodimer formation could affect bands, but no empirical migration is supplied.
| Band near 50.3 kDa | Consistent with the predicted RARG protein size; confirm identity with antibody controls |
| Several bands near the expected size | Could reflect RARG isoforms 1, 2, 3, and 4; their migration is not established |
| Band near twice the monomer size | Could reflect a homodimer if the complex survives sample preparation |
| Weak band in a cytoplasmic fraction | RARG is also found in the nucleus |
💡Expected RARG appearanceRARG has a predicted mass of 50.3 kDa, but no empirical band size is supplied; use antibody specificity and sample controls to verify any band near that size.
| UniProt predicted mass | Places the reference protein near 50.3 kDa |
| Homodimer formation | Could yield a band near twice the monomer size if the complex survives sample preparation |
| Splice isoform 1 | May differ in size from isoforms 2, 3, and 4; its migration is not supplied |
| Splice isoforms 2, 3, and 4 | May differ in size from isoform 1 or each other; distinct bands are not established |
| Situation | Likely cause | Next action |
|---|---|---|
| No band in lysate | Nuclear RARG may be poorly recovered during lysate preparation | Check nuclear extraction and include a positive sample and loading control |
| Band higher than expected | A homodimer may persist during sample preparation | Compare freshly denatured samples and verify band identity |
| Band lower than expected | An alternative splice isoform may differ in size | Check antibody epitope coverage and verify band identity |
| Multiple bands | RARG has four named splice isoforms, though distinct migration is unproven | Compare isoform expression and use an independent antibody or knockdown control |
| Weak or no signal | RARG may be underrepresented in the tested fraction | Compare nuclear and cytoplasmic fractions with fraction and loading controls |
Experiment evidence
Western blot images showing RARG band
M04250-1 · RARG
← swipe / scroll for more images →
Real WB data behind the band-size expectations in this section.
Sample controls for RARG Western blot
🧪HPA-IHC candidate guidance (verify in WB): For positive controls for RARG in Western blot, you can use cerebellum tissue lysate, which has high HPA expression.
Positive control: Cerebellum (IHC candidate; verify WB)
Negative control: Suggested KO / knockdown lysate
Loading controls: Run GAPDH, β-actin, and a total-protein stain such as Ponceau alongside the samples.
⚠️Feasibility: No supplied tissue is scored not detected, so use siRNA knockdown or a KO line for a clear negative control.
HPA tissue expression evidence for RARG
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 |
|---|---|---|---|---|
| Cerebellum | cells in granular layer | High | Protein (IHC) | HPA → |
| Cerebral cortex | neuronal cells | High | Protein (IHC) | HPA → |
| Cervix | glandular cells | High | Protein (IHC) | HPA → |
| Endometrium | cells in endometrial stroma | High | Protein (IHC) | HPA → |
| Epididymis | glandular cells | High | Protein (IHC) | HPA → |
Lower expression tissues · IHC evidence, not confirmed WB-negative controls
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Adipose tissue | adipocytes | Low | Protein (IHC) | HPA → |
| Adrenal gland | glandular cells | Medium | Protein (IHC) | HPA → |
| Appendix | glandular cells | Medium | Protein (IHC) | HPA → |
| Bone marrow | hematopoietic cells | Medium | Protein (IHC) | HPA → |
| Breast | glandular cells | Medium | Protein (IHC) | HPA → |
Section 3
Advanced RARG Western Blot Tips
Deeper troubleshooting and optimisation questions for RARG, answered from its protein features.
How should RARG 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 RARG isoforms produce different bands?
Isoforms · UniProt lists four isoforms. Relative to isoform 1, isoform 3 lacks residues 1–72; isoforms 2 and 4 have different N-terminal sequences. These differences may affect apparent band sizes, but the supplied features do not establish where any isoform runs.
Check whether the epitope lies in an altered N-terminal region. UniProt lists replacement of residues 1–61 in isoform 2, loss of residues 1–72 in isoform 3, and replacement of residues 1–111 in isoform 4. An antibody against one of these regions may detect isoforms differently.
Check whether the epitope lies in an altered N-terminal region. UniProt lists replacement of residues 1–61 in isoform 2, loss of residues 1–72 in isoform 3, and replacement of residues 1–111 in isoform 4. An antibody against one of these regions may detect isoforms differently.
Do annotated modifications prove a band shift?
PTM · The linked UniProt record describes protein features. A modification annotation alone does not demonstrate a visible shift; retain any condition or experimental qualifier attached to it.
Does this guide establish induction of RARG?
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 RARG?
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 M04250-1 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 RARG bands be quantified across samples?
Quantitation · Use the same band selection and sample preparation across samples. Four listed isoforms and nuclear and cytoplasmic localization make band identity and fraction choice important to consistent quantitation.
Should RARG run at exactly 50.3 kDa?
Interpretation · 50.3 kDa is the predicted mass of canonical RARG. No observed band size is supplied, so an apparent mass difference cannot be established or attributed to a feature.
UniProt lists omega-N-methylarginine at residue 34 in canonical isoform 1 numbering. The listed N-terminal changes affect that region in isoforms 2, 3, and 4. This feature alone does not demonstrate a visible shift or explain a mass difference; check which numbering convention an antibody or report uses.
UniProt reports RARG in both nucleus and cytoplasm. Consider both fractions when assessing a weak or absent band, and compare samples prepared with the same fractionation method.
The four listed isoforms are candidates: isoform 3 lacks residues 1–72, while isoforms 2 and 4 replace N-terminal regions. Compare band detection with antibody epitope location. The supplied features do not establish the identity of any unexpected band.
UniProt lists omega-N-methylarginine at residue 34 in canonical isoform 1 numbering. The listed N-terminal changes affect that region in isoforms 2, 3, and 4. This feature alone does not demonstrate a visible shift or explain a mass difference; check which numbering convention an antibody or report uses.
UniProt reports RARG in both nucleus and cytoplasm. Consider both fractions when assessing a weak or absent band, and compare samples prepared with the same fractionation method.
The four listed isoforms are candidates: isoform 3 lacks residues 1–72, while isoforms 2 and 4 replace N-terminal regions. Compare band detection with antibody epitope location. The supplied features do not establish the identity of any unexpected band.
Boster reagents
RARG 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-Retinoic Acid Receptor gamma Rabbit Monoclonal Antibody
Cat # M04250-1
The catalog reports one anti-RARG antibody, M04250-1, with stated human and rat reactivity. Its Western blot image shows Retinoic Acid Receptor gamma expression in HeLa cell lysate; the supplied evidence does not show a rat blot.
Which to pick: M04250-1 is the only listed option. It has a HeLa lysate Western blot image; for rat samples, reactivity is listed, but no rat blot is shown.
Source: BosterBio RARG gene-info card — filtered to Western-blot-capable antibodies; each card shows that product's actual WB validation figure.
References
- UniProt Consortium. UniProt entry P13631.
- Human Protein Atlas. RARG tissue expression.
- PMC8642268 — target-verified WB comparison
- PMC11242685 — target-verified WB comparison
- PMC9746340 — target-verified WB comparison