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PTP1B Antibody

Catalog # Availability Size / Price Inquiry
AMR09642G 100 μl / $545

PTP1B Antibody

Brand

Leading Biology

Catalog Number

AMR09642G

Product Type

Monoclonal Antibodies

Field of Research

Product Overview

We constantly strive to ensure we provide our customers with the best antibodies. As a result of this work we offer this antibody in purified format. We are in the process of updating our datasheets. If you have any questions regarding this update, please feel free to contact our technical support team. This product is a high quality PTP1B antibody.

Molecular Weight

49967 Da

Cellular Localization

Antigen Cellular Localization: Endoplasmic reticulum membrane; Peripheral membrane protein; Cytoplasmic side Note=Interacts with EPHA3 at the cell membrane

Host

Rabbit

Species Reactivity

Human

Target

A synthetic peptide corresponding to residues surrounding serine 386 of human PTP1B was used as an immunogen. This antibody detects both phosphorylated and nonphosphorylated PTP1B.

Clone

EP1841Y

Symbol

PTP1B

GeneID

UniProt ID

Function

Tyrosine-protein phosphatase which acts as a regulator of endoplasmic reticulum unfolded protein response. Mediates dephosphorylation of EIF2AK3/PERK; inactivating the protein kinase activity of EIF2AK3/PERK. May play an important role in CKII- and p60c-src-induced signal transduction cascades. May regulate the EFNA5-EPHA3 signaling pathway which modulates cell reorganization and cell-cell repulsion. May also regulate the hepatocyte growth factor receptor signaling pathway through dephosphorylation of MET.

Summary

The non-transmembrane protein tyrosine phosphatase, PTP1B, comprises 435 amino acids, of which the C-terminal 114 residues have been implicated in controlling both localization and function of this enzyme. Increased phosphorylation of PTP1B is seen to accompany the transition from G2 to M phase of the cell cycle. Immunofluorescence experiments indicate that PTP-1B is localized predominantly in the endoplasmic reticulum (ER). Subcellular fractionation is consistent with this localization and establishes that PTP-1B is tightly associated with microsomal membranes, with its phosphatase domain oriented towards the cytoplasm. The finding of a tyrosine phosphatase on the ER suggests new possibilities for cellular events controlled by tyrosine phosphorylation (2). It has also been shown that PTP1B is a novel substrate for Akt and that phosphorylation of PTP1B by Akt at Ser(50) may negatively modulate its phosphatase activity creating a positive feedback mechanism for insulin signaling (3).

Form

50 mM Tris-Glycine (pH 7.4), 0.15 M NaCl, 40% Glycerol, 0.01% sodium azide and 0.05% BSA.

Storage & Stability

Store at +4°C short term. For long-term storage, aliquot and store at -20°C or below. Stable for 12 months at -20°C. Avoid repeated freeze-thaw cycles.

Applications

WB, IHC

Dilution

WB~~1:2000~10000 IHC~~1:50~100

Synonyms

Tyrosine-protein phosphatase non-receptor type 1, Protein-tyrosine phosphatase 1B, PTP-1B, PTPN1, PTP1B

Images

A. Western blot analysis on (A) HeLa cell lysate (B) HepG2 cell lysate (C) Jurkat cell lysate using anti-PTP1B RabMAb (Cat. AMR09642G), dilution 1:2000.

B. Immunohistochemical analysis of paraffin-embedded human tonsils using anti-PTP1B RabMAb. (cat. 2257).

Specification

Quantity

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