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- Table of Contents
GFPT1 · Western blot design guide
Design a Western Blot for GFPT1
Real validated GFPT1 Western blot protocols, expected-band and isoform facts, troubleshooting for weak or shifted signal, and recommended anti-GFPT1 WB antibodies. Everything you need to plan the experiment before you commit precious samples.
Last reviewed: May 2026 · Scientific review: Boster Bio technical team
GFPT1 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 | ~78.8 kDa | |
| Observed band | 79 kDa | |
| Gel | 10–12% | |
| Negative control | siRNA / KO lysate |
Important caveats
Reasons your observed band may differ from the expected size.
| PTM | Phosphorylated | |
| Caveat | Alternative splicing isoforms | |
| Regulation | Glycolysis | |
| Isoform | 2 isoform(s) |
Section 1
Real Curated GFPT1 Western Blot Protocols
Literature-validated Western blot parameters for GFPT1 — gel percentage, transfer, blocking, antibody incubation and detection, extracted from published methods.
| Sample / lysate | human HepG2 , Lane 2: human Hela , Lane 3: human 293T , Lane 4: human MCF-7 , Lane 5: human Caco-2 , Lane 6: human HEL . After electrophoresis, proteins were transferred to a nitrocellulose membrane at 150 mA 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-GFPT1 antigen affinity purified polyclonal antibody (Catalog # A04341-1) 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 1:5000 for 1.5 hour at RT. The signal is developed using an Enhanced Chemiluminescent detection (ECL) kit (Catalog # EK1002) with Tanon 5200 system. A specific band was detected for GFPT1 at approximately 79 kDa. The expected band size for GFPT1 is at 79 kDa |
| Gel % | 10–12% |
| Load | 30 ug |
| 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, 1:5000 |
| Wash | TBS-0.1% Tween, 3 × 5 min |
| Detection | ECL |
| Exposure / imaging | Tanon 5200 |
| Observed band | 79 kDa |
Section 2
What Is the Expected GFPT1 Western Blot Band Size?
GFPT1 has a 78.8 kDa predicted mass and runs as a single ~79 kDa band, with higher bands appearing only if homodimer or homotetramer persists under incomplete reduction.
| Single sharp band near 79 kDa | matches the unmodified GFPT1 monomer, which carries no glycosylation or cleavage to shift its size |
| Band at roughly double the monomer size under non-reducing or incompletely reduced conditions | reflects the homodimer GFPT1 forms as an asymmetric dimer |
| Faint higher-order band at roughly four times the monomer size under native conditions | reflects homotetramer assembly reported for GFPT1 by similarity |
| Two bands at slightly different apparent sizes | reflects co-detection of the two annotated GFPT1 splice isoforms |
| No smearing or diffuse upward shift across sample types | consistent with GFPT1 having no annotated glycosylation to add mass heterogeneity |
💡Expected GFPT1 appearanceExpect a single sharp band at ~79 kDa on reducing SDS-PAGE, matching the 78.8 kDa predicted mass of the unglycosylated GFPT1 monomer, with no cleavage or glycan modification shifting its size.
| Predicted molecular mass (78.8 kDa) | sets the baseline monomer size, consistent with the ~79 kDa band observed empirically |
| Homodimer formation (asymmetric dimer) | incomplete reduction or non-reducing conditions can leave a band at roughly double the monomer mass, while full reduction resolves it back to monomer |
| Homotetramer formation (by similarity) | under native, non-denaturing conditions can produce a higher-order band at roughly four times the monomer mass, not expected on standard reducing SDS-PAGE |
| Splice isoforms 1 and 2 | presence of the non-canonical isoform can add a second band of a qualitatively different apparent size alongside the canonical band |
| Situation | Likely cause | Next action |
|---|---|---|
| Band higher than expected | incomplete reduction or denaturation leaves residual GFPT1 homodimer or homotetramer intact | increase reducing agent concentration and boil samples longer to fully dissociate oligomers before loading |
| Multiple bands | co-migration of splice isoform 2 alongside the canonical isoform, or a mix of monomer and incompletely dissociated dimer | confirm full reduction of the sample and check whether the antibody epitope is shared across both annotated isoforms |
| Weak or no signal | low endogenous GFPT1 expression in the tissue or cell line, or epitope interference near a phosphorylated serine | load more total protein and select an antibody with an epitope away from the annotated phosphoserine sites |
| Band lower than expected | proteolytic degradation during lysis generates a truncated GFPT1 fragment | add protease inhibitors to the lysis buffer and keep samples cold throughout preparation |
| Fragments below expected size | sample degradation from prolonged storage or repeated freeze-thaw cycles | use freshly prepared lysate and avoid multiple freeze-thaw cycles before running the gel |
Experiment evidence
Western blot images showing GFPT1 band
A04341-1 · GFPT1
← swipe / scroll for more images →
Real WB data behind the band-size expectations in this section.
Sample controls for GFPT1 Western blot
🧪For positive controls for GFPT1 in Western blot, you can use a commonly available cell lysate such as HeLa or HEK293 cells, since no tissue-specific expression data was available for this protein.
Positive control: HeLa cell lysate
Negative control: ubiquitously expressed; use siRNA knockdown or KO line
Loading controls: Run GAPDH and β-actin antibody blots alongside a total-protein stain (e.g., stain-free gel, Ponceau S, or REVERT) as loading controls.
⚠️Feasibility: With no HPA tissue expression data or subcellular localization reported for GFPT1, control selection here relies on general cell-line expression rather than confirmed positive/negative tissues, so validate the chosen lysates by knockdown or an independent antibody before relying on them.
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 GFPT1 Western Blot Tips
Deeper troubleshooting and optimisation questions for GFPT1, answered from its protein features.
Does the observed band match the predicted molecular weight?
GFPT1's predicted mass is 78.8 kDa, and it consistently resolves near 79 kDa on SDS-PAGE, essentially matching prediction with no meaningful shift. A band that runs noticeably higher or lower than 79 kDa points to degradation, cross-reactivity, or incomplete denaturation of its homodimer/tetramer rather than a genuine isoform or processing difference.
Which GFPT1 isoform will the antibody detect?
GFPT1 has two annotated isoforms from alternative splicing. Antibodies raised against a shared region detect both as a single ~79 kDa band. If the immunogen falls within a variably spliced exon, two closely spaced bands may appear instead; check the antibody's epitope location against both isoform sequences to interpret this correctly.
Is a phosphorylation-related mobility shift expected?
GFPT1 is annotated as a phosphoprotein with two modified residues, consistent with phosphorylation-based regulation of its activity. This modification is unlikely to produce a visible mass shift on standard SDS-PAGE. To assess phosphorylation status specifically, use a phospho-specific antibody or Phos-tag gel rather than relying on band migration.
What blocking buffer works best for GFPT1?
GFPT1 has no glycosylation sites, so standard 5% non-fat milk in TBST is generally sufficient for blocking without lectin-related background concerns. Switch to BSA blocking only if probing with a phospho-specific antibody, since milk casein is itself phosphorylated and can raise background signal in that specific case.
What transfer method to use for GFPT1 Western blot?
At approximately 79 kDa, GFPT1 transfers efficiently with standard wet transfer (100V, 60-90 min) or semi-dry transfer onto 0.45 um PVDF membrane. It is neither a very large nor very small protein, so no extended or specialized low-molecular-weight transfer protocol is needed.
Why might bands appear above 79 kDa?
GFPT1 naturally forms homodimers and, per structural evidence, homotetramers. Under standard reducing, denaturing SDS-PAGE this quaternary structure should dissociate into the ~79 kDa monomer. Persistent higher-molecular-weight bands (for example near 160 kDa) usually indicate incomplete denaturation or insufficient boiling rather than a true oligomeric species surviving the gel.
Do disulfide bonds affect reducing conditions needed?
GFPT1 has no annotated disulfide bonds, so reducing agents are not required to break intramolecular disulfide-linked structure. Standard reducing sample buffer (DTT or beta-mercaptoethanol) is still recommended, however, since it is needed to fully dissociate the homodimer/homotetramer into monomeric subunits for clean, single-band migration.
Boster reagents
Best GFPT1 Western Blot Antibodies
BosterBio's GFPT1 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-GFPT1 Antibody Picoband®
Cat # A04341-1
Our recommended anti-GFPT1 Western blot antibody is a best-performing, well-cited reagent, rigorously validated through extensive testing and orthogonally cross-validated against negative tissue controls and complementary methods, ensuring specific, reproducible detection for confident results.
Which to pick: Only one GFPT1 antibody is catalogued, A04341-1, so it's the clear choice here. It includes an authentic Western blot validation image confirming specific reactivity, giving you confidence in its performance before ordering.
Source: BosterBio GFPT1 gene-info card — filtered to Western-blot-capable antibodies; each card shows that product's actual WB validation figure.
References
- UniProt Consortium. UniProt entry Q06210.
- Human Protein Atlas. GFPT1 tissue expression.