Thyroperoxidase Protéine

N° du produit ABIN934717

Détail du produit

Antigène: Thyroperoxidase (TPO) (Thyroid Peroxidase (TPO))

Type de proteíne: Native

Origine: Humain

Source: Human

Attributs du produit: Purified native Human Thyroid Peroxidase protein
Protein Source: Human thyroid glands

Pureté: > 95 % pure

Information d'application

Indications d'application: Each Investigator should determine their own optimal working dilution for specific applications.

Restrictions: For Research Use only

Independent Validation (SDS)

Validation #102793 (SDS-PAGE)

by: in.vent Diagnostica GmbH, Hennigsdorf, Germany

No.: #102793

Date: 17.04.2018

Antigène: TPO

Numéro du lot: A17091521

Application validée: SDS-PAGE

Contrôle positif:

Molecular weight (Uniprot P07202: 8 possible isoforms of TPO with a molecular weight between 103 and 67 kDa)

Contrôle négative:

none

Conclusion:

Passed. Native human TPO protein ABIN934717 appears as a band with a molecular weight of approximately 100kDa after separation on an SDS-PAGE gel.

Validation Images

Coomassie staining subsequently to SDS-PAGE separation of human TPO1 ABIN934717.

Protocole

Anticorps primaire: ABIN934717

Full Protocol:

• Dilute 2µg of native human TPO (antibodies-online, ABIN934717, lot A17091521) in 2x sample buffer (126mM Tris-HCl pH6.8, 20% glycerol, 4% SDS, 0.02% bromophenol blue, 0.1M DTT).
• Boil samples for 5min at 95°C.
• Separate the sample on a denaturing SERVAGel TG PRiME 12% precast gel (Serva, 43266, V170144) in a Electrophoresis chamber (Hoefer Inc., SE250) with Laemmli buffer for 1h at 250V, 50mA/gel along side 4µl Roti-Mark Tricolor (Carl Roth, 8271, lot 326248051) molecular weight marker.
• Staining of the separated proteins with InstantBlue Protein Stain (Expedeon, ISB1L, lot 170616330) according to the manufacturer’s recommendations.
• Image acquisition: 600dpi scan and increasing of color saturation.

Notes:

The manufacturer’s information concerning the protein’s purity and molecular weight can be confirmed.

Independent Validation (LIA)

Validation #103248 (Lipid Interaction Assay)

by: in.vent Diagnostica GmbH, Hennigsdorf, Germany

No.: #103248

Date: 17.04.2018

Antigène: TPO

Numéro du lot: A17091521

Application validée: Lipid Interaction Assay

Contrôle positif:

Protein concentration (manufacturer's specification)

Standards and controls for LIA based of purified TPO out of human thyroid

Contrôle négative:

Dilution Buffer for LIA

Deionized water for absorbance at 280nm

Conclusion:

Passed. Protein concentration of native human TPO protein ABIN934717 can be confirmed by absorbance at 280nm and by LIA.

Validation Images

Standard curve and ABIN934717 measurements using LIA.

Protocole

Anticorps primaire: ABIN934717

Full Protocol:

• Measuring protein concentration using absorbance at 280nm:
• • 100µl sample in a 96-Well UV Microplate (Thermo Fisher Scientific, 8404)
  • Measuring at 280nm
  • Calculation with d of 0.28cm
  • Extinction coefficient assuming all pairs of Cys residues form cysteines: Abs 0.1% (=1g/l)= 1.304
• Measuring TPO concentration using an in-house coated tube LIA:
• • Sample dilution with assay dilution buffer in 6 steps (10000ng/ml and 100ng/ml as pre-dilution; 50, 25, 12.5, 6.25ng/ml as samples)
  • Pipette 300µl tracer and 200µl standards, controls, or samples per tube in duplicates.
  • Incubation ON at RT.
  • Add 1ml washing solution to each coated tube prior to decanting off the liquid.
  • Add 1 ml washing solution to each coated tube three times and decant off the liquid. Turn the tubes upside down for 5–10min and adsorb remaining liquid with blotting paper.
  • Measurement in a luminometer by automatic injection of LIA reagents (sodium hydrate, azotic acid). Measurement time: 1sec.
• Calculate the concentration based on the standard curve.

Notes:

• The LIA measures human TPO in serum, plasma and other fluids, using one anti-TPO antibody at solid phase and another anti-TPO antibody as tracer. The measurement range is from 10 to 50ng/ml.

• Absorbance at 280nm was 0.22. The calculated concentration considering the extinction coefficient is 0.6mg/ml (expected was 0.5mg/ml).

• Regression of TPO LIA standard curve was R²=0.997. Calculated concentration of LIA controls was 28ng/ml (expected 20-30ng/ml) and 14ng/ml (expected 10-15ng/ml).

• The calculated concentration of the diluted samples was 24ng/ml (expected 25ng/ml) and 13ng/ml (expected 12.5ng/ml). The other dilutions were out of measurement range.

Stockage

Format: Lyophilized

Reconstitution: Reconstitute in distilled water.

Buffer: Lyophilized in 20 mM TRIS, with 50 mM KCl, no preservatives.

Agent conservateur: Without preservative

Conseil sur la manipulation: Avoid repeated freeze/thaw cycles.

Stock: -20 °C

Stockage commentaire: Aliquot and store at -20 °C.

Référence

Ali, Wolfe, Mukherjee, Radford, Patel, White, Milojevic, Capretta, Nair, Brennan: "A sputum bioassay for airway eosinophilia using an eosinophil peroxidase aptamer." dans: Scientific reports, Vol. 12, Issue 1, pp. 22476, (2022) (PubMed).

Rahnama, Mahmoudi, Kazemnejad, Salehi, Ghahiri, Soltanghoraee, Vafaei, Rezaei, Zarnani: "Thyroid peroxidase in human endometrium and placenta: a potential target for anti-TPO antibodies." dans: Clinical and experimental medicine, (2020) (PubMed).

Détail du antigène

Antigène: Thyroperoxidase (TPO) (Thyroid Peroxidase (TPO))

Autre désignation: Thyroid Peroxidase (TPO Produits)

Synonymes: MSA Protein, TDH2A Protein, TPX Protein, TPO Protein, msa Protein, tpx Protein, xtpo Protein, LOC100218312 Protein, thyroid peroxidase Protein, TPO Protein, Tpo Protein, tpo Protein, LOC100547103 Protein

Sujet: Thyroid peroxidase or thyroperoxidase (TPO) is an enzyme expressed mainly in the thyroid that liberates iodine for addition onto tyrosine residues on thyroglobulin for the production of thyroxine (T4) or triiodothyronine (T3), thyroid hormones. In humans, thyroperoxidase is encoded by the TPO gene.
Description: Human thyroid glands.
Alternative Names: TPO protein, MSA protein, TPX protein

Pathways: Thyroid Hormone Synthesis