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RAB5C / Ras-related protein Rab-5C · Western blot design guide
Design a Western Blot for RAB5C
Real validated RAB5C Western blot protocols, expected-band and isoform facts, troubleshooting for weak or shifted signal, and recommended anti-RAB5C 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
RAB5C 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 | ~23.5 kDa | |
| Observed band | ~23 kDa | |
| Gel | 5–20% (catalog M05148-1) | |
| Positive control | Testis (IHC candidate; verify WB) +4 more | |
| Negative control | Adipose tissue (IHC candidate; verify WB) |
Important caveats
Reasons your observed band may differ from the expected size.
| PTM | Phosphorylated | |
| Caveat | Phosphorylation-state controls | |
| Gene-set association | MSigDB C7 membership | |
| Isoform | 2 isoform(s) |
Section 1
Real Curated RAB5C Western Blot Protocols
The M05148-1 protocol combines labelled catalog values with standard starting conditions. Published comparisons retain their own sample, reagent and detection scope.
| Sample / lysate | human 293T, human HepG2, human A549 (catalog M05148-1) |
| Gel % | 5–20% (catalog M05148-1) |
| Load | 30 ug; reducing conditions (catalog M05148-1) |
| Transfer | a nitrocellulose membrane at 150 mA for 50-90 minutes (catalog M05148-1) |
| Membrane | nitrocellulose membrane (catalog M05148-1) |
| Blocking | 5% non-fat milk/TBS for 1.5 hour at RT (catalog M05148-1) |
| Primary antibody | M05148-1 · 1:500 (catalog M05148-1) |
| Primary incubation | overnight at 4°C (catalog M05148-1) |
| Secondary antibody | goat anti-rabbit IgG-HRP, 1:1000 (catalog M05148-1) |
| Secondary incubation | 1.5 hour at RT (catalog M05148-1) |
| Wash | TBS-0.1%Tween 3 times with 5 minutes each (catalog M05148-1) |
| Detection | ECL (catalog M05148-1) |
Section 2
What Is the Expected RAB5C Western Blot Band Size?
RAB5C is predicted at 23.5 kDa and observed at ~23 kDa; the cause of that small difference is not established.
| Band at ~23 kDa | matches the empirical RAB5C band in whole-cell lysates |
| Single band near 23.5 kDa | consistent with the UniProt predicted mass |
| Additional bands near ~23 kDa | could include isoforms 1 and 2, but their migration is unestablished |
| Weak band in a soluble fraction | may reflect RAB5C association with membranes |
💡Expected RAB5C appearanceUniProt predicts 23.5 kDa, and antibody QC shows a ~23 kDa band in whole-cell lysates; confirm band identity with appropriate antibody and RAB5C depletion controls.
| UniProt predicted mass | places the expected protein near 23.5 kDa, consistent with the observed ~23 kDa band |
| Alternative splicing | could alter band size, but no isoform masses or distinct migration are supplied |
| Isoform 1 | has no supplied isoform-specific mass or migration |
| Isoform 2 | has no supplied isoform-specific mass or migration |
| Situation | Likely cause | Next action |
|---|---|---|
| No band in lysate | membrane-associated RAB5C may be poorly extracted | check membrane extraction and compare with the antibody QC whole-cell lysates |
| Band higher than expected | identity of a higher band is unestablished by the supplied features | compare with the ~23 kDa control band and test RAB5C depletion |
| Band lower than expected | an isoform or degradation is possible, but neither band size is established | test RAB5C depletion and check sample integrity |
| Multiple bands | isoforms 1 and 2 are listed, but distinct bands are unproven | test each band's response to RAB5C depletion |
| Weak or no signal | membrane-associated RAB5C may be underrepresented in the prepared fraction | check extraction and include a whole-cell lysate positive control |
Experiment evidence
Western blot images showing RAB5C band
M05148-1 · RAB5C
A05148 · RAB5C
A05148 · RAB5C
← swipe / scroll for more images →
Real WB data behind the band-size expectations in this section.
Sample controls for RAB5C Western blot
🧪HPA-IHC candidate guidance (verify in WB): For positive controls for RAB5C in Western blot, you can use testis lysate, which has high HPA expression.
Positive control: Testis (IHC candidate; verify WB)
Negative control: Adipose tissue (IHC candidate; verify WB)
Loading controls: Run GAPDH, β-actin, and a total-protein stain such as Ponceau alongside the samples.
⚠️Feasibility: A testis positive and adipose tissue negative are available, but membrane-associated RAB5C requires effective protein extraction.
HPA tissue expression evidence for RAB5C
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 |
|---|---|---|---|---|
| Testis | pachytene spermatocytes | High | 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 → |
Lower expression tissues · IHC evidence, not confirmed WB-negative controls
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Adipose tissue | adipocytes | Not detected | Protein (IHC) | HPA → |
| Smooth muscle | smooth muscle cells | Not detected | Protein (IHC) | HPA → |
| Cerebral cortex | endothelial cells | Low | Protein (IHC) | HPA → |
| Ovary | follicle cells | Low | Protein (IHC) | HPA → |
| Skeletal muscle | myocytes | Low | Protein (IHC) | HPA → |
Section 3
Advanced RAB5C Western Blot Tips
Deeper troubleshooting and optimisation questions for RAB5C, answered from its protein features.
How should RAB5C 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 RAB5C isoforms produce different bands?
Isoforms · UniProt lists isoforms 1 and 2. Isoform 2 replaces the initial M with a longer N-terminal sequence, so it may have a different apparent size. The features alone do not establish where either isoform migrates; check which isoform the antibody detects.
Which phosphorylation site matters for RAB5C interpretation?
PTM · UniProt lists Ser-85 phosphorylation by LRRK2. Ser-85 is the supplied UniProt coordinate; check the numbering convention before comparing it with isoform 2 or an antibody datasheet. Phosphorylation alone does not establish a visible band shift.
The supplied UniProt interaction annotation says phosphorylation at Ser-85 disrupts interactions with GDI1, GDI2, CHML and CHM. Interpret changes in those interactions separately from changes in total RAB5C band intensity.
The supplied UniProt interaction annotation says phosphorylation at Ser-85 disrupts interactions with GDI1, GDI2, CHML and CHM. Interpret changes in those interactions separately from changes in total RAB5C band intensity.
Does this guide establish induction of RAB5C?
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 RAB5C?
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 M05148-1 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 RAB5C bands be quantified across samples?
Quantitation · Quantify the same band or resolved isoform consistently across samples. Report the fraction analyzed, since UniProt lists membrane and early endosome localization. A total RAB5C band does not, by itself, measure Ser-85 phosphorylation.
How should the RAB5C band compare with predicted mass?
Interpretation · UniProt predicts 23.5 kDa, and the supplied observed band is about 23 kDa. This is a close match. The listed features do not establish a cause for any small difference between calculated and apparent mass.
UniProt places lipid-anchored RAB5C on the cytoplasmic side of the cell membrane and early endosome membrane, and also lists melanosomes. Record whether each sample is whole-cell material or a fraction, and compare like fractions when measuring band intensity.
First compare them with the expected approximately 23 kDa band and consider the listed isoforms. Isoform 2 has an altered N terminus, while Ser-85 phosphorylation and lipid anchoring are also annotated. These features alone cannot assign an unexpected band to an isoform or modification; verify its identity experimentally.
UniProt places lipid-anchored RAB5C on the cytoplasmic side of the cell membrane and early endosome membrane, and also lists melanosomes. Record whether each sample is whole-cell material or a fraction, and compare like fractions when measuring band intensity.
First compare them with the expected approximately 23 kDa band and consider the listed isoforms. Isoform 2 has an altered N terminus, while Ser-85 phosphorylation and lipid anchoring are also annotated. These features alone cannot assign an unexpected band to an isoform or modification; verify its identity experimentally.
Boster reagents
RAB5C 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-RAB5C / RABL Rabbit Monoclonal Antibody
Cat # M05148-1
Real WB data
Anti-Ras-related protein Rab-5C RAB5C Antibody
Cat # A05148
Two the supplier anti-RAB5C antibodies have WB images. M05148-1 shows an approximately 23 kDa band in human 293T, HepG2, A549, RT4, rat RH35, and mouse HEPA1-6 lysates. A05148 is shown with 293 cell lysate. The supplied evidence does not establish orthogonal specificity.
Which to pick: Both list human, mouse, and rat reactivity. Choose M05148-1 if you want documented WB samples and conditions: its caption reports six lysates, a 1:500 primary dilution, and a 23 kDa band. A05148 has a WB image caption for 293 cell lysate.
Source: BosterBio RAB5C gene-info card — filtered to Western-blot-capable antibodies; each card shows that product's actual WB validation figure.
References
- UniProt Consortium. UniProt entry P51148.
- Human Protein Atlas. RAB5C tissue expression.
- PMC12823045 — target-verified WB comparison
- PMC4069224 — target-verified WB comparison
- PMC7199404 — target-verified WB comparison