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EDEM1 / ER degradation-enhancing alpha-mannosidase-like protein 1 · Western blot design guide
Design a Western Blot for EDEM1
Real validated EDEM1 Western blot protocols, expected-band and isoform facts, troubleshooting for weak or shifted signal, and recommended anti-EDEM1 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
EDEM1 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 | ~73.8 kDa | |
| Observed band | ~66 kDa | |
| Gel | 10% (catalog A04973-1) | |
| Positive control | Liver (IHC candidate; verify WB) +4 more | |
| Negative control | Cervix (IHC candidate; verify WB) |
Important caveats
Reasons your observed band may differ from the expected size.
| PTM | Glycosylated | |
| Caveat | Band identity controls | |
| Gene-set association | MSigDB Hallmark membership | |
| Isoform | 2 isoform(s) |
Section 1
Real Curated EDEM1 Western Blot Protocols
The A04973-1 protocol combines labelled catalog values with standard starting conditions. Published comparisons retain their own sample, reagent and detection scope.
| Sample / lysate | human THP-1, rat liver, mouse liver (catalog A04973-1) |
| Gel % | 10% (catalog A04973-1) |
| Load | 30 ug; reducing conditions (catalog A04973-1) |
| Transfer | a nitrocellulose membrane at 150 mA for 50-90 minutes (catalog A04973-1) |
| Membrane | nitrocellulose membrane (catalog A04973-1) |
| Blocking | 5% non-fat milk/TBS for 1.5 hour at RT (catalog A04973-1) |
| Primary antibody | A04973-1 · 0.5 μg/mL (catalog A04973-1) |
| Primary incubation | overnight at 4°C (catalog A04973-1) |
| Secondary antibody | goat anti-rabbit IgG-HRP, 1:5000 (catalog A04973-1) |
| Secondary incubation | 1.5 hour at RT (catalog A04973-1) |
| Wash | TBS-0.1%Tween 3 times with 5 minutes each (catalog A04973-1) |
| Detection | ECL (catalog A04973-1) |
Section 2
What Is the Expected EDEM1 Western Blot Band Size?
EDEM1 is predicted at 73.8 kDa, while an empirical band appears near 66 kDa; the cause of this difference is not established.
| Band near 66 kDa | Empirical EDEM1 band in reducing whole-cell blots; confirm identity with controls |
| Band near 73.8 kDa | Migration near the predicted sequence mass; identity requires confirmation |
| Band above the predicted mass | N-linked glycosylation could affect migration, but a visible shift is not established |
| Multiple bands | Isoforms 1 and 2 could differ in migration, but distinct bands are not established |
💡Expected EDEM1 appearanceEDEM1 has a predicted sequence mass of 73.8 kDa and an empirical band near 66 kDa; the cause of the difference is unknown, so verify band identity with appropriate controls.
| Predicted sequence mass | 73.8 kDa predicted; the empirical EDEM1 band is near 66 kDa |
| N-linked glycosylation at Asn181 | Could alter apparent mass; no site-specific shift is established |
| N-linked glycosylation at Asn198 | Could alter apparent mass; no site-specific shift is established |
| N-linked glycosylation at Asn299 | Could alter apparent mass; no site-specific shift is established |
| N-linked glycosylation at Asn342 | Could alter apparent mass; no site-specific shift is established |
| N-linked glycosylation at Asn624 | Could alter apparent mass; no site-specific shift is established |
| Isoforms 1 and 2 | May differ in size, but their masses and migration are not supplied |
| Situation | Likely cause | Next action |
|---|---|---|
| Band higher than expected | N-linked glycosylation may affect migration; the shift is unconfirmed | Compare with an appropriate glycosylation control and verify EDEM1 identity |
| Band lower than expected | The observed 66 kDa band is below the 73.8 kDa prediction; its cause is unknown | Compare with a positive control and confirm band identity |
| Broad smear instead of sharp band | Variable glycosylation across five N-linked sites is possible | Compare with a glycosylation control and confirm the signal is EDEM1 |
| Multiple bands | Isoforms 1 and 2 are listed, but distinct migration is unproven | Check isoform-specific evidence and validate each band with an EDEM1 control |
| Weak or no signal | EDEM1 is an endoplasmic reticulum membrane protein and may be poorly recovered | Check membrane-protein extraction and include a positive control |
Experiment evidence
Western blot images showing EDEM1 band
A04973-1 · EDEM1
← swipe / scroll for more images →
Real WB data behind the band-size expectations in this section.
Sample controls for EDEM1 Western blot
🧪HPA-IHC candidate guidance (verify in WB): For positive controls for EDEM1 in Western blot, you can use liver lysate, the highest positive tissue in the supplied HPA data.
Positive control: Liver (IHC candidate; verify WB)
Negative control: Cervix (IHC candidate; verify WB)
Loading controls: Run GAPDH, β-actin, and a total-protein stain such as Ponceau alongside the samples.
⚠️Feasibility: As EDEM1 is an ER membrane protein, ensure the lysate solubilizes membrane proteins effectively.
HPA tissue expression evidence for EDEM1
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 |
|---|---|---|---|---|
| Liver | hepatocytes | High | Protein (IHC) | HPA → |
| Appendix | glandular cells | Medium | Protein (IHC) | HPA → |
| Caudate | neuronal cells | Medium | Protein (IHC) | HPA → |
| Cerebral cortex | neuronal cells | Medium | Protein (IHC) | HPA → |
| Colon | glandular cells | Medium | Protein (IHC) | HPA → |
Lower expression tissues · IHC evidence, not confirmed WB-negative controls
| Tissue | Cell type | Level | Evidence | Source |
|---|---|---|---|---|
| Cervix | glandular cells | Not detected | Protein (IHC) | HPA → |
| Esophagus | squamous epithelial cells | Not detected | Protein (IHC) | HPA → |
| Nasopharynx | respiratory epithelial cells | Not detected | Protein (IHC) | HPA → |
| Oral mucosa | squamous epithelial cells | Not detected | Protein (IHC) | HPA → |
| Skin | fibroblasts | Not detected | Protein (IHC) | HPA → |
Section 3
Advanced EDEM1 Western Blot Tips
Deeper troubleshooting and optimisation questions for EDEM1, answered from its protein features.
How should EDEM1 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.
How could EDEM1 isoforms affect band interpretation?
Isoforms · UniProt lists isoforms 1 and 2. Relative to the 657-residue canonical sequence, isoform 2 lacks residues 1–195 and replaces residues 561–657 with a shorter sequence. An antibody targeting either changed region may detect the isoforms differently. Check that its epitope lies in the shared residues 196–560 before comparing bands.
Which EDEM1 glycosylation sites matter when assessing a band shift?
PTM · The canonical UniProt sequence lists N-linked sites at residues 181, 198, 299, 342, and 624. Compare untreated and PNGase F-treated aliquots if testing whether N-linked glycans affect migration. A shift would support glycan contribution, but the site annotations alone do not predict a visible shift or explain the approximately 66 kDa band.
Does unfolded protein response induction guarantee a stronger EDEM1 band?
Induction · UniProt associates EDEM1 with the unfolded protein response, but the supplied features give no induction condition or expected fold change. Measure EDEM1 in matched treated and control samples, and report the observed change rather than assuming the response raises its abundance.
What transfer method to use for EDEM1 Western blot?
Transfer · EDEM1 is annotated as a single-pass type II ER membrane protein. The supplied features do not establish whether wet or semi-dry transfer works better. Check transfer of the region around the observed 66 kDa band and predicted 73.8 kDa mass, then optimize the chosen method if signal remains on the gel.
How should blocking be optimized?
Blocking · Standard workflow guidance: follow the A04973-1 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 EDEM1 bands be quantified across samples?
Quantitation · Quantify the same validated band across samples and keep antibody detection consistent. Because UniProt lists two structurally different isoforms, confirm that the antibody recognizes the isoform or isoforms being compared. The approximately 66 kDa band should not automatically be treated as total EDEM1.
Why might EDEM1 appear near 66 kDa instead of 73.8 kDa?
Interpretation · The observed band is about 66 kDa, while the predicted mass is 73.8 kDa. EDEM1 has five annotated N-linked glycosylation sites and two isoforms, but those features alone do not explain the difference or identify the band. Compare the band with a validated EDEM1 control before assigning it.
Check whether the antibody epitope is shared by both isoforms. Isoform 2 lacks canonical residues 1–195 and has a different sequence after residue 560; canonical N-linked sites are at 181, 198, 299, 342, and 624. Isoform differences and glycosylation are possibilities to test, not assignments based on band position alone.
Check whether the antibody epitope is shared by both isoforms. Isoform 2 lacks canonical residues 1–195 and has a different sequence after residue 560; canonical N-linked sites are at 181, 198, 299, 342, and 624. Isoform differences and glycosylation are possibilities to test, not assignments based on band position alone.
Boster reagents
EDEM1 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-EDEM1 Antibody Picoband®
Cat # A04973-1
A04973-1 is a rabbit polyclonal anti-EDEM1 antibody with a Western blot image from human THP-1 cells and rat and mouse liver lysates. The reported band is approximately 66 kDa, compared with an expected 74 kDa; evidence is limited to these shown samples.
Which to pick: A04973-1 is the only listed option. Its stated reactivity covers human, mouse, and rat, and its WB image shows the specific samples above. Consider the reported 66 versus 74 kDa band size when interpreting your blot.
Source: BosterBio EDEM1 gene-info card — filtered to Western-blot-capable antibodies; each card shows that product's actual WB validation figure.
References
- UniProt Consortium. UniProt entry Q92611.
- Human Protein Atlas. EDEM1 tissue expression.
- PMC8141605 — target-verified WB comparison
- PMC3414498 — target-verified WB comparison
- PMC10562789 — target-verified WB comparison