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- Table of Contents
SOCS1 / Suppressor of cytokine signaling 1 · Western blot design guide
Design a Western Blot for SOCS1
Real validated SOCS1 Western blot protocols, expected-band and isoform facts, troubleshooting for weak or shifted signal, and recommended anti-SOCS1 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
SOCS1 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 | ~23.6 kDa | |
| Observed band | ≈27 kDa | |
| Gel | 5–20% (catalog A00448) | |
| Positive control | Adrenal gland (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 | — | |
| Caveat | Observed–expected mass difference | |
| Gene-set association | MSigDB Hallmark membership | |
| Isoform | 1 isoform(s) |
Section 1
Real Curated SOCS1 Western Blot Protocols
The A00448 protocol combines labelled catalog values with standard starting conditions. Published comparisons retain their own sample, reagent and detection scope.
| Sample / lysate | human K562 (catalog A00448) |
| Gel % | 5–20% (catalog A00448) |
| Load | 30 ug; reducing conditions (catalog A00448) |
| Transfer | a nitrocellulose membrane at 150 mA for 50-90 minutes (catalog A00448) |
| Membrane | nitrocellulose membrane (catalog A00448) |
| Blocking | 5% non-fat milk/TBS for 1.5 hour at RT (catalog A00448) |
| Primary antibody | A00448 · 0.5 μg/mL (catalog A00448) |
| Primary incubation | overnight at 4°C (catalog A00448) |
| Secondary antibody | goat anti-rabbit IgG-HRP, 1:5000 (catalog A00448) |
| Secondary incubation | 1.5 hour at RT (catalog A00448) |
| Wash | TBS-0.1%Tween 3 times with 5 minutes each (catalog A00448) |
| Detection | ECL (catalog A00448) |
Section 2
What Is the Expected SOCS1 Western Blot Band Size?
SOCS1 is predicted at 23.6 kDa and observed near 27 kDa; the cause of the difference is not established.
| Band near 27 kDa in whole-cell lysate | Matches the reported empirical SOCS1 band; confirm identity with controls |
| Band near 23.6 kDa | Near the UniProt predicted mass; identity still requires confirmation |
| Band in a nuclear fraction | Consistent with annotated nuclear localization |
| Band in a vesicle-enriched fraction | Consistent with annotated cytoplasmic vesicle localization |
💡Expected SOCS1 appearanceUniProt predicts 23.6 kDa, while antibody QC reports a band near 27 kDa; the cause of this difference is unestablished, so confirm band identity with appropriate controls.
| UniProt predicted mass | 23.6 kDa provides the sequence-based size reference |
| Predicted mass compared with the reported band | The reported 27 kDa band migrates above the 23.6 kDa prediction for an unestablished reason |
| Predicted mass in whole-cell lysate | 23.6 kDa remains the reference when assessing the reported 27 kDa lysate band |
| Predicted mass in cellular fractions | 23.6 kDa remains the reference when assessing bands in nuclear or vesicle-enriched fractions |
| Situation | Likely cause | Next action |
|---|---|---|
| No band in lysate | SOCS1 is annotated in the nucleus and cytoplasmic vesicles | Check fractionated samples alongside a positive-control whole-cell lysate |
| Band higher than expected | The reported 27 kDa band exceeds the 23.6 kDa prediction for an unestablished reason | Compare with a positive-control lysate and confirm specificity by SOCS1 depletion |
| Band lower than expected | UniProt lists no cleavage or smaller isoform to explain it | Check sample integrity and confirm identity by SOCS1 depletion |
| Multiple bands | The single listed isoform does not establish a multiple-band pattern | Use SOCS1 depletion to identify specific bands |
| Weak or no signal | SOCS1 may be underrepresented in the sampled cellular fraction | Test nuclear and vesicle-enriched fractions with a positive control |
Experiment evidence
Western blot images showing SOCS1 band
A00448 · SOCS1
A00448 · SOCS1
← swipe / scroll for more images →
Real WB data behind the band-size expectations in this section.
Sample controls for SOCS1 Western blot
🧪HPA-IHC candidate guidance (verify in WB): For positive controls for SOCS1 in Western blot, you can use adrenal gland tissue lysate.
Positive control: Adrenal gland (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: SOCS1 is intracellular, but its medium HPA signal in adrenal gland may require sufficient lysate for detection.
HPA tissue expression evidence for SOCS1
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 |
|---|---|---|---|---|
| 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 → |
| Bronchus | respiratory epithelial 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 → |
| Caudate | glial cells | Low | Protein (IHC) | HPA → |
| Cerebellum | cells in granular layer | Low | Protein (IHC) | HPA → |
| Cerebral cortex | endothelial cells | Low | Protein (IHC) | HPA → |
| Epididymis | glandular cells | Low | Protein (IHC) | HPA → |
Section 3
Advanced SOCS1 Western Blot Tips
Deeper troubleshooting and optimisation questions for SOCS1, answered from its protein features.
How should SOCS1 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 a second SOCS1 band represent a listed isoform?
Isoforms · Only one isoform is listed, with no alternative sequence supplied. The listed features therefore do not support assigning another band to a SOCS1 isoform.
Does UniProt identify a modification that shifts the SOCS1 band?
PTM · No modified residue or glycosylation site is listed. The Ubl conjugation pathway keyword does not specify a modification site or demonstrate a visible shift. Do not assign a shifted band to a particular modification from these features alone.
Should pathway stimulation increase the SOCS1 band?
Induction · SOCS1 is a signal transduction inhibitor that interacts with activated signaling proteins, including JAK family kinases. These features identify relevant pathways but do not establish that a particular stimulus increases SOCS1 abundance. Measure the response under the chosen conditions.
What transfer method to use for SOCS1 Western blot?
Transfer · SOCS1 is predicted to be 23.6 kDa. Choose transfer conditions suited to retaining a protein of this size, and verify transfer with a marker near 24 kDa. The supplied features do not specify a particular membrane or transfer protocol.
How should blocking be optimized?
Blocking · Standard workflow guidance: follow the A00448 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 SOCS1 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 might SOCS1 appear near 27 kDa instead of 23.6 kDa?
Interpretation · The supplied apparent band is about 27 kDa, while the predicted mass is 23.6 kDa. The listed features do not establish why migration differs. Confirm band identity before assigning a cause to the difference.
SOCS1 is listed in the nucleus and cytoplasmic vesicles. Perinuclear cytoplasmic vesicles were observed upon interaction with FGFR3. Consider these locations when selecting fractions and interpreting a weak band in one fraction.
Compare the same sample fraction across conditions and account for loading. SOCS1 has listed nuclear and cytoplasmic vesicle locations, so a change in one fraction alone need not reflect a change in total abundance.
Check whether a band tracks the expected SOCS1 signal near the supplied apparent size of 27 kDa. The record lists one isoform and no specific modified residues or glycosylation sites, so it does not identify the source of additional bands. Use an identity control before labeling them SOCS1 species.
SOCS1 is listed in the nucleus and cytoplasmic vesicles. Perinuclear cytoplasmic vesicles were observed upon interaction with FGFR3. Consider these locations when selecting fractions and interpreting a weak band in one fraction.
Compare the same sample fraction across conditions and account for loading. SOCS1 has listed nuclear and cytoplasmic vesicle locations, so a change in one fraction alone need not reflect a change in total abundance.
Check whether a band tracks the expected SOCS1 signal near the supplied apparent size of 27 kDa. The record lists one isoform and no specific modified residues or glycosylation sites, so it does not identify the source of additional bands. Use an identity control before labeling them SOCS1 species.
Boster reagents
SOCS1 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-SOCS1 Antibody Picoband®
Cat # A00448
The catalog reports A00448, a rabbit polyclonal anti-SOCS1 antibody with stated human, mouse, and rat reactivity. Its Western blot image uses human K562 lysate and shows a band near 27 kDa, compared with an expected 24 kDa.
Which to pick: A00448 is the only listed SOCS1 antibody. Its Western blot image tests human K562 lysate at 30 µg per lane with 0.5 µg/mL primary antibody. Mouse and rat reactivity is listed, but no blot for either species is supplied.
Source: BosterBio SOCS1 gene-info card — filtered to Western-blot-capable antibodies; each card shows that product's actual WB validation figure.
References
- UniProt Consortium. UniProt entry O15524.
- Human Protein Atlas. SOCS1 tissue expression.
- PMC2973829 — target-verified WB comparison
- PMC4454995 — target-verified WB comparison
- PMC9547265 — target-verified WB comparison