MilliporeSigma
All Photos(4)

Documents

P3555

Sigma-Aldrich

Monoclonal Anti-Phosphothreonine antibody produced in mouse

clone PTR-8, ascites fluid

Sign Into View Organizational & Contract Pricing

Synonym(s):
Monoclonal Anti-Phosphothreonine, Phospho Thr, Phospho Threonine, Phospho−Thr, Phospho-Threonine, p-Thr
NACRES:
NA.44

biological source

mouse

Quality Level

conjugate

unconjugated

antibody form

ascites fluid

antibody product type

primary antibodies

clone

PTR-8, monoclonal

contains

15 mM sodium azide

technique(s)

indirect ELISA: 1:4,000
western blot: 1:50

isotype

IgG2b

shipped in

dry ice

storage temp.

−20°C

target post-translational modification

unmodified

Looking for similar products? Visit Product Comparison Guide

Related Categories

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
P3300P5872P1869
clone

PTR-8, monoclonal

clone

PT-66, monoclonal

clone

PT-66, monoclonal

clone

pT-154, monoclonal

antibody form

ascites fluid

antibody form

ascites fluid

antibody form

purified immunoglobulin

antibody form

purified immunoglobulin

conjugate

unconjugated

conjugate

unconjugated

conjugate

unconjugated

conjugate

unconjugated

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

technique(s)

indirect ELISA: 1:4,000, western blot: 1:50

technique(s)

indirect ELISA: 1:1,600, western blot: 1:2,000 using a fresh human platelet preparation

technique(s)

flow cytometry: suitable, immunocytochemistry: suitable, immunohistochemistry: suitable, immunoprecipitation (IP): suitable, indirect ELISA: 0.5-1.0 μg/mL using phosphotyrosine conjugated to BSA, radioimmunoassay: suitable, western blot: 0.25-0.5 μg/mL using total cell extract of human platelets

technique(s)

direct ELISA: suitable, immunohistochemistry: suitable, microarray: suitable, western blot: 2-4 μg/mL using total extract of A431 cells stimulated by EGF

Still not finding the right product?  

Give our Product Selector Tool a try.

General description

As determined by ELISA and dot blot, the antibody reacts specifically with phosphorylated threonine, both as free amino acid or conjugated to carriers such as BSA or KLH. No cross-reactivity is observed with non-phosphorylated threonine, phosphoserine, phosphotyrosine, AMP or ATP. This antibody has been used in immunoblotting for the localization of some phosphothreonine-containing proteins. Certain proteins known to contain phosphorylated threonine may not be recognized by this antibody due to steric hindrance of the recognition site.
Monoclonal Anti-Phosphothreonine (mouse IgG2b isotype) is derived from the hybridoma produced by the fusion of mouse myeloma cells and splenocytes from an immunized mouse.

Immunogen

phosphothreonine conjugated to keyhole limpet hemocyanin (KLH).

Application

Monoclonal Anti-Phosphothreonine antibody produced in mouse has been used in:immunoblotting, enzyme linked immuno sorbent assay (ELISA) ,dot blot.
Monoclonal and polyclonal antibodies directed against phosphorylated residues may be useful as analytical and preparative tools, by enabling the identification, quantification and immunoaffinity isolation of phosphorylated cellular proteins. Antibodies can be employed to monitor alterations in phosphorylation of specific proteins as they occur in intact organs or even whole animals.
Mouse monoclonal clone PTR-8 anti-phosphothreonine antibody may be used for the localization of phosphorylated threonine using various immunochemical assays such as ELISA, dot blot, and immunoblotting. Due to steric hindrance of the recognition site, this antibody may not recognize certain proteins known to contain phosphorylated threonine.
Mouse monoclonal clone PTR-8 anti-Phosphothreonine antibody reacts with phosphorylated threonine both as a free amino acid or when conjugated to carriers such as BSA or KLH, using ELISA and dot blot. It does not react with nonphosphorylated threonine, phosphorylated tyrosine or serine, AMP or ATP.

Biochem/physiol Actions

Protein phosphorylation and dephosphorylation are basic mechanisms for the modification of protein function in eukaryotic cells. Phosphorylation is a rare post-translational event in normal tissue. However, the abundance of phosphorylated cellular proteins increases tenfold following various activation processes, which are mediated through phosphotyrosine, phosphoserine or phosphothreonine (p-Tyr/p-Ser/p-Thr). Many different mitogenic systems, such as the EGF, PDGF and insulin receptor systems, contain Tyr/Ser/Thr kinase domains that autophosphorylate specific Tyr/Ser/Thr residues upon binding of their ligands. T cell antigen receptor complex or receptors for some hemopoietic growth factors may stimulate associated kinases, and cells transformed by viral oncogenes contain elevated levels of phosphorylated Tyr/Ser/Thr. An understanding of transformation by oncogenes and mitogenic processes of growth factors depends on the identification of their substrate and a subsequent determination of how phosphorylation affects the properties of these proteins.

Disclaimer

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Storage Class

10 - Combustible liquids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service