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- Table of Contents
ASNS / Asparagine synthetase [glutamine-hydrolyzing] · Western blot design guide
Design a Western Blot for ASNS
Real validated ASNS Western blot protocols, expected-band and isoform facts, troubleshooting for weak or shifted signal, and recommended anti-ASNS 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
ASNS 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 | ~64.4 kDa | |
| Observed band | ~64 kDa | |
| Gel | 5–20% (catalog A03302-2) | |
| Positive control | Cerebellum (IHC candidate; verify WB) +4 more | |
| Negative control | Adrenal gland (IHC candidate; verify WB) |
Important caveats
Reasons your observed band may differ from the expected size.
| PTM | Phosphorylated + Acetylated | |
| Caveat | Phosphorylation-state controls | |
| Gene-set association | MSigDB Hallmark membership | |
| Isoform | 3 isoform(s) |
Section 1
Real Curated ASNS Western Blot Protocols
The A03302-2 protocol combines labelled catalog values with standard starting conditions. Published comparisons retain their own sample, reagent and detection scope.
| Sample / lysate | human Jurkat, human Hela, human K562 (catalog A03302-2) |
| Gel % | 5–20% (catalog A03302-2) |
| Load | 30 ug; reducing conditions (catalog A03302-2) |
| Transfer | a nitrocellulose membrane at 150 mA for 50-90 minutes (catalog A03302-2) |
| Membrane | nitrocellulose membrane (catalog A03302-2) |
| Blocking | 5% non-fat milk/TBS for 1.5 hour at RT (catalog A03302-2) |
| Primary antibody | A03302-2 · 0.5 μg/mL (catalog A03302-2) |
| Primary incubation | overnight at 4°C (catalog A03302-2) |
| Secondary antibody | goat anti-rabbit IgG-HRP, 1:5000 (catalog A03302-2) |
| Secondary incubation | 1.5 hour at RT (catalog A03302-2) |
| Wash | TBS-0.1%Tween 3 times with 5 minutes each (catalog A03302-2) |
| Detection | ECL (catalog A03302-2) |
Section 2
What Is the Expected ASNS Western Blot Band Size?
ASNS is predicted at 64.4 kDa and observed at ~64 kDa; annotated isoforms have no supplied individual masses or demonstrated migration differences.
| Band at ~64 kDa | Matches the empirical ASNS band and the 64.4 kDa predicted mass. |
| Single sharp band near 64 kDa | Consistent with ASNS; three annotated isoforms do not establish visibly separate bands. |
| Several discrete bands | Isoforms 1, 2, and 3 are possible contributors, but their migration is not supplied; confirm band identity. |
| Band at a different position | An ASNS isoform is possible, but its mass and migration are unknown; confirm band identity. |
💡Expected ASNS appearanceASNS has a predicted mass of 64.4 kDa and an empirical band at ~64 kDa; confirm band identity with appropriate controls if other bands appear.
| Predicted ASNS mass | The 64.4 kDa prediction agrees with the empirical ~64 kDa band. |
| Splice isoform 1 | Its individual mass and migration are not supplied. |
| Splice isoform 2 | Its individual mass and migration are not supplied. |
| Splice isoform 3 | Its individual mass and migration are not supplied. |
| Situation | Likely cause | Next action |
|---|---|---|
| Band higher than expected | Identity or isoform migration is uncertain. | Compare with the ~64 kDa reference and check specificity by ASNS knockdown. |
| Band lower than expected | An isoform or a non-ASNS band is possible; isoform masses are unknown. | Check specificity by ASNS knockdown and compare with the ~64 kDa band. |
| Multiple bands | Three splice isoforms are annotated, but distinct migration is unproven. | Test which bands respond to ASNS knockdown. |
| Weak or no signal | ASNS may be below the assay’s detection limit in the sample. | Check loading and transfer, then include a sample with detectable ASNS. |
| Fragments below expected size | Sample degradation or nonspecific binding is possible; no cleavage product is listed. | Prepare fresh lysate with protease inhibitors and check specificity by ASNS knockdown. |
Experiment evidence
Western blot images showing ASNS band
A03302-2 · ASNS
M03302 · ASNS
← swipe / scroll for more images →
Real WB data behind the band-size expectations in this section.
Sample controls for ASNS Western blot
🧪HPA-IHC candidate guidance (verify in WB): For positive controls for ASNS in Western blot, you can use cerebellum lysate, which HPA rates as high for ASNS.
Positive control: Cerebellum (IHC candidate; verify WB)
Negative control: Adrenal gland (IHC candidate; verify WB)
Loading controls: Run GAPDH, β-actin, and a total-protein stain such as Ponceau alongside the samples.
⚠️Feasibility: HPA reports high expression in cerebellum and no detection in adrenal gland, making a tissue contrast feasible.
HPA tissue expression evidence for ASNS
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 | Purkinje cells | High | Protein (IHC) | HPA → |
| Pancreas | exocrine glandular cells | High | Protein (IHC) | HPA → |
| Placenta | trophoblastic cells | High | Protein (IHC) | HPA → |
| Stomach | glandular cells | High | Protein (IHC) | HPA → |
| Tonsil | germinal center cells | High | Protein (IHC) | HPA → |
Lower expression tissues · IHC evidence, not confirmed WB-negative controls
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Adrenal gland | glandular cells | Not detected | Protein (IHC) | HPA → |
| Breast | adipocytes | Not detected | Protein (IHC) | HPA → |
| Bronchus | respiratory epithelial cells | Not detected | Protein (IHC) | HPA → |
| Endometrium | cells in endometrial stroma | Not detected | Protein (IHC) | HPA → |
| Fallopian tube | glandular cells | Not detected | Protein (IHC) | HPA → |
Section 3
Advanced ASNS Western Blot Tips
Deeper troubleshooting and optimisation questions for ASNS, answered from its protein features.
How should ASNS 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 ASNS isoforms produce different bands?
Isoforms · UniProt lists three isoforms. Relative to isoform 1, isoform 2 lacks residues 1–21 and isoform 3 lacks residues 1–83, so either could migrate below the canonical band. These sequence differences alone do not establish which isoforms are present in your sample.
Define which band or bands you measure and use the same selection across samples. The three listed isoforms differ at the N terminus, so combining a canonical band with smaller candidate isoform bands would change what the measurement represents. Band identity requires experimental confirmation.
Define which band or bands you measure and use the same selection across samples. The three listed isoforms differ at the N terminus, so combining a canonical band with smaller candidate isoform bands would change what the measurement represents. Band identity requires experimental confirmation.
Which ASNS modifications matter when interpreting bands?
PTM · UniProt lists N6-acetyllysine at 385, phosphothreonine at 545, and phosphoserine at 557. These are canonical UniProt coordinates, which may differ from paper or antibody numbering. Their presence does not establish a resolvable band shift.
Phosphothreonine 545 and phosphoserine 557 are listed in UniProt canonical numbering. They make phosphorylation a possibility to consider, but the features alone do not show that either site is occupied in your sample or causes the unexpected band.
Phosphothreonine 545 and phosphoserine 557 are listed in UniProt canonical numbering. They make phosphorylation a possibility to consider, but the features alone do not show that either site is occupied in your sample or causes the unexpected band.
Does this guide establish induction of ASNS?
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 ASNS?
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 A03302-2 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 ASNS 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.
Why is the ASNS band near 64 kDa?
Interpretation · The observed band is approximately 64 kDa, close to the predicted 64.4 kDa for canonical ASNS. The listed modifications do not establish a visible shift or explain any small difference in apparent mass.
Check whether its size is consistent with the shorter isoforms before assigning it. Isoform 2 lacks canonical residues 1–21; isoform 3 lacks 1–83. The supplied features cannot establish that a particular smaller band is ASNS.
Check whether its size is consistent with the shorter isoforms before assigning it. Isoform 2 lacks canonical residues 1–21; isoform 3 lacks 1–83. The supplied features cannot establish that a particular smaller band is ASNS.
Boster reagents
ASNS 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-Asparagine synthetase/ASNS Antibody Picoband®
Cat # A03302-2
Real WB data
Anti-ASNS/Asparagine Synthetase Rabbit Monoclonal Antibody
Cat # M03302
Two anti-ASNS antibodies are listed for Western blotting, both with images. A03302-2 shows an approximately 64 kDa band in the stated human cell lines and rat and mouse tissues; M03302 shows ASNS expression in K562 lysate. The supplied evidence does not establish broader sample performance.
Which to pick: Both list human, mouse and rat reactivity. Choose A03302-2 if you want a documented blot across the listed human cell lines and rodent tissues, with conditions reported. M03302 has a WB image from K562 lysate, but its caption gives fewer experimental details.
Source: BosterBio ASNS gene-info card — filtered to Western-blot-capable antibodies; each card shows that product's actual WB validation figure.
References
- UniProt Consortium. UniProt entry P08243.
- Human Protein Atlas. ASNS tissue expression.
- PMC10641120 — target-verified WB comparison
- PMC11184737 — target-verified WB comparison
- PMC8753197 — target-verified WB comparison