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- Table of Contents
HAPLN1 / Hyaluronan and proteoglycan link protein 1 · Western blot design guide
Design a Western Blot for HAPLN1
Source-linked HAPLN1 Western blot protocol options, expected-band and isoform facts, troubleshooting for weak or shifted signal, and recommended anti-HAPLN1 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
HAPLN1 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 | ~40.2 kDa | |
| Observed band | ≈40 and 48 kDa | |
| Gel | 10% (catalog A05980-3) | |
| Positive control | Placenta (IHC candidate; verify WB) +1 more | |
| Negative control | Adipose tissue (IHC candidate; verify WB) |
Important caveats
Reasons your observed band may differ from the expected size.
| PTM | Glycosylated + Cleaved | |
| Caveat | Modification-state controls | |
| Gene-set association | MSigDB C7 membership | |
| Isoform | 1 isoform(s) |
Section 1
Source-Linked HAPLN1 Western Blot Protocol Options
The A05980-3 protocol combines labelled catalog values with standard starting conditions. Published comparisons retain their own sample, reagent and detection scope.
| Sample / lysate | human Caco-2, human U2OS, human PC-3, rat brain, mouse brain (catalog A05980-3) |
| Gel % | 10% (catalog A05980-3) |
| Load | 30 ug; reducing conditions (catalog A05980-3) |
| Transfer | a nitrocellulose membrane at 150 mA for 50-90 minutes (catalog A05980-3) |
| Membrane | nitrocellulose membrane (catalog A05980-3) |
| Blocking | 5% non-fat milk/TBS for 1.5 hour at RT (catalog A05980-3) |
| Primary antibody | A05980-3 · 0.5 μg/mL (catalog A05980-3) |
| Primary incubation | overnight at 4°C (catalog A05980-3) |
| Secondary antibody | goat anti-rabbit IgG-HRP, 1:5000 (catalog A05980-3) |
| Secondary incubation | 1.5 hour at RT (catalog A05980-3) |
| Wash | TBS-0.1%Tween 3 times with 5 minutes each (catalog A05980-3) |
| Detection | ECL (catalog A05980-3) |
Section 2
What Is the Expected HAPLN1 Western Blot Band Size?
HAPLN1 is predicted at 40.2 kDa and observed at approximately 40 and 48 kDa; the cause of the difference is not established.
| Bands at approximately 40 and 48 kDa | Both positions were observed for HAPLN1; the difference is unexplained by the supplied evidence |
| Band near 40.2 kDa | Near the predicted mass of the 354-residue sequence |
| Slightly lower band | Could reflect cleavage of the 1–15 propeptide; its migration is unverified |
| Little or no band in whole-cell lysate | HAPLN1 is secreted into the extracellular matrix |
💡Expected HAPLN1 appearanceHAPLN1 has a predicted mass of 40.2 kDa and empirical bands at approximately 40 and 48 kDa; their difference is unexplained, so confirm band identity with appropriate controls.
| Predicted sequence mass | 40.2 kDa before accounting for processing or apparent migration |
| N-linked glycosylation at Asn21 | May alter apparent migration; no site-specific shift is established |
| N-linked glycosylation at Asn56 | May alter apparent migration; no site-specific shift is established |
| Propeptide at residues 1–15 | Cleavage would reduce mass slightly; a distinct mature band is not established |
| Situation | Likely cause | Next action |
|---|---|---|
| No band in lysate | HAPLN1 is secreted into the extracellular matrix | Check conditioned medium or an extracellular matrix preparation |
| Band higher than expected | The 48 kDa band is observed, but its shift from 40.2 kDa is unexplained | Compare with the documented bands and verify identity by HAPLN1 knockdown or another antibody |
| Band lower than expected | Propeptide cleavage is possible, but the lower band's identity is unverified | Check antibody epitope coverage and verify the band by HAPLN1 knockdown |
| Multiple bands | Approximately 40 and 48 kDa bands are observed; their relationship is unresolved | Test band identity by HAPLN1 knockdown and compare migration after deglycosylation |
| Weak or no signal | Secreted HAPLN1 may be scarce in the sampled lysate | Check extracellular material and include a positive control |
Experiment evidence
Western blot images showing HAPLN1 band
A05980-3 · HAPLN1
M05980-1 · HAPLN1
← swipe / scroll for more images →
Real WB data behind the band-size expectations in this section.
Sample controls for HAPLN1 Western blot
🧪HPA-IHC candidate guidance (verify in WB): For positive controls for HAPLN1 in Western blot, you can use placenta tissue, which has medium HPA staining.
Positive control: Placenta (IHC candidate; verify WB)
Negative control: Adipose tissue (IHC candidate; verify WB)
Loading controls: Run GAPDH, β-actin, and a total-protein stain alongside the samples.
⚠️Feasibility: HAPLN1 is secreted into the extracellular matrix, so whole-cell lysates may give weak signals.
HPA tissue expression evidence for HAPLN1
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 |
|---|---|---|---|---|
| Placenta | decidual cells | Medium | Protein (IHC) | HPA → |
| Testis | elongated or late spermatids | 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 → |
| Adrenal gland | glandular cells | Not detected | Protein (IHC) | HPA → |
| Appendix | glandular cells | Not detected | Protein (IHC) | HPA → |
| Bone marrow | hematopoietic cells | Not detected | Protein (IHC) | HPA → |
| Breast | adipocytes | Not detected | Protein (IHC) | HPA → |
Section 3
Advanced HAPLN1 Western Blot Tips
Deeper troubleshooting and optimisation questions for HAPLN1, answered from its protein features.
How should HAPLN1 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.
Are multiple HAPLN1 isoforms expected?
Isoforms · The supplied record lists one isoform and no alternative sequence. Do not assign separate bands to isoforms on this evidence alone.
How can I assess HAPLN1 glycosylation in the blot?
PTM · Compare untreated and enzymatically deglycosylated samples. UniProt lists N-linked sites at positions 21 and 56; these are UniProt coordinates and may differ from antibody or paper numbering. A migration change would support glycosylation as a contributor, but the site annotations alone do not predict a visible shift.
Does this guide establish induction of HAPLN1?
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 HAPLN1?
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 A05980-3 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 I quantify the 40 and 48 kDa bands?
Quantitation · Measure the bands separately and use the same band definition across samples. If reporting a combined signal, state that it includes both bands. The supplied features do not establish whether both bands represent HAPLN1 or the same molecular form.
How should I interpret HAPLN1 bands near 40 and 48 kDa?
Interpretation · The predicted mass is 40.2 kDa, and bands near 40 and 48 kDa have been observed. HAPLN1 has N-linked glycosylation sites at UniProt positions 21 and 56 and a propeptide annotated at 1..15. These features alone do not establish the cause of either band or their mass difference.
UniProt annotates a propeptide at positions 1..15 of the 354-residue sequence. Keep that region in mind when interpreting apparent mass or choosing an antibody epitope; the annotation alone does not establish which processed form produced an observed band.
HAPLN1 has five annotated disulfide bonds. Comparing reducing and nonreducing samples can reveal whether disulfide-dependent structure affects migration or antibody recognition. The annotation does not predict the direction or size of any change.
HAPLN1 is annotated as secreted and located in the extracellular space and extracellular matrix. Consider extracellular matrix material or conditioned medium when selecting samples, alongside any cellular fraction being tested.
UniProt annotates a propeptide at positions 1..15 of the 354-residue sequence. Keep that region in mind when interpreting apparent mass or choosing an antibody epitope; the annotation alone does not establish which processed form produced an observed band.
HAPLN1 has five annotated disulfide bonds. Comparing reducing and nonreducing samples can reveal whether disulfide-dependent structure affects migration or antibody recognition. The annotation does not predict the direction or size of any change.
HAPLN1 is annotated as secreted and located in the extracellular space and extracellular matrix. Consider extracellular matrix material or conditioned medium when selecting samples, alongside any cellular fraction being tested.
Boster reagents
HAPLN1 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-HAPLN1 Antibody Picoband®
Cat # A05980-3
Real WB data
Anti-HAPLN1 Rabbit Monoclonal Antibody
Cat # M05980-1
Two anti-HAPLN1 antibodies, A05980-3 and M05980-1, list human, mouse, and rat reactivity and include Western blot images. The supplied captions show specific lysate examples; they do not establish performance in every tissue or condition.
Which to pick: For human Caco-2, U2OS, or PC-3 cells and rat or mouse brain, A05980-3 has a detailed blot caption with a band near 40–48 kDa. M05980-1 has a blot image for Caco2 cells and mouse spleen. Choose based on the closest tested sample.
Source: BosterBio HAPLN1 gene-info card — filtered to Western-blot-capable antibodies; each card shows that product's actual WB validation figure.
References
- UniProt Consortium. UniProt entry P10915.
- Human Protein Atlas. HAPLN1 tissue expression.
- PMC12642568 — target-verified WB comparison
- PMC9444915 — target-verified WB comparison
- PMC9202519 — target-verified WB comparison