| Field | Specification |
|---|---|
| Target | |
| Alternative names | Phospholamban; PLB; PLN |
| UniProt # | |
| Host | |
| Clonality | |
| Isotype | |
| Reactivity | |
| Applications | |
| Immunogen | E.coli-derived human Phospholamban/PLN recombinant protein (Position: M1-C36). |
| Molecular weight | |
| Purification | |
| Reconstitution | |
| Cellular localization | |
| Concentration | |
| Form | Lyophilized |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Product Overview
This rabbit polyclonal antibody detects phospholamban (gene PLN) in human, mouse and rat samples and is validated for Western blot, IHC and ELISA. The predicted molecular weight is 6.1 kDa, and the supplier reports an observed band at about 23 kDa.
Phospholamban is a small sarcoplasmic reticulum membrane protein that inhibits the cardiac Ca2+ pump SERCA2a. Its phosphorylation by PKA or CaMKII during β-adrenergic stimulation relieves this inhibition, speeding Ca2+ reuptake and heart muscle relaxation, and PLN mutations cause inherited cardiomyopathies.
| Target | Phospholamban (gene PLN; UniProt P26678, human) |
|---|---|
| Host / Clonality / Isotype | Rabbit / Polyclonal / Rabbit IgG |
| Reactivity | Human, Mouse, Rat |
| Form | Lyophilized |
| Formulation | Per vial: 4 mg trehalose; 0.9 mg NaCl; 0.2 mg Na2HPO4 |
| Calculated MW | 6.1 kDa |
| Observed MW | 23 kDa |
| Storage | As supplied: −20 °C for up to 12 months from receipt. After reconstitution: 4 °C for up to 1 month, or aliquot and keep at −20 °C for up to 6 months. Avoid repeated freeze–thaw cycles. |
Validated Applications
| Western blot | 0.25–0.5 µg/mL (Mouse, Rat) |
|---|---|
| IHC (paraffin sections) | 2–5 µg/mL (Human, Mouse, Rat) |
| ELISA | 0.1–0.5 µg/mL |
Samples with a confirmed band (WB): rat heart tissue, mouse heart tissue.
Recommended loading (WB): 20–40 µg of total protein per lane.
Conditions in the example images (WB): 5–20% gradient SDS-PAGE under reducing conditions, 30 µg lysate per lane, transfer to nitrocellulose membrane, blocking in 5% non-fat milk, primary antibody at 0.5 µg/mL overnight at 4 °C, HRP-conjugated secondary antibody at 1:5000, ECL detection.
Samples with confirmed staining (IHC): human heart tissue, mouse cardiac tissue, rat cardiac tissue.
Recommended antigen retrieval: heat-mediated, in TE buffer (pH 9.0); citrate buffer (pH 6.0) can be used instead.
Conditions in the example images (IHC): heat-mediated antigen retrieval in EDTA buffer (pH 8.0).
Immunogen
Recombinant human Phospholamban/PLN fragment (Met1–Cys36), expressed in E. coli.
Reactivity Notes
The supplier lists reactivity with human, mouse and rat. UniProt places phospholamban in the endoplasmic reticulum membrane, sarcoplasmic reticulum membrane, mitochondrion membrane and membrane. Tissue expression noted by UniProt (human): Heart muscle (at protein level). The samples tested by the supplier (listed above) are a practical starting point for positive controls. Because the antibody is phospho-specific, signal depends on the phosphorylation state of the sample; a phosphatase-treated lysate is a useful negative control.
Safety
Customization & Add-ons: Can’t find the antibody you need—or require a custom format for your assay? We can help you source the best match or support custom antibody solutions for diverse research needs, including species and isotype selection, conjugations and labeling (e.g., HRP/AP, biotin, fluorophores), purification grade options (Protein A/G, affinity purified), formulation preferences (buffer selection, carrier-free, glycerol-free), custom concentrations and aliquoting, low-endotoxin options for cell-based work, and application-focused QC/validation support (project dependent). Click Talk to a Scientist to submit a request, email us at support@biohippo.com, or explore our Research Services for additional support—our team will follow up with feasibility details and next steps.
Yaofeng Li et al. (2026) Levistolide A Alleviates Myocardial Ischemia–Reperfusion Injury Partly by Improving Calcium Homeostasis via the ADORA2B/cAMP/PKA/PLB/SERCA2α Signaling Axis. Current Issues in Molecular Biology. 10.3390/cimb48020125
