MAPT Human 383a.a.

Microtubule-Associated Protein Tau 383 a.a. Human Recombinant
Cat. No.
BT13126
Source
Escherichia Coli.
Synonyms
Microtubule-associated protein tau, Neurofibrillary tangle protein, Paired helical filament-tau, PHF-tau, MAPT, MAPTL, MTBT1, TAU, MSTD, PPND, DDPAC, MTBT2, FTDP-17, FLJ31424, MGC138549.
Appearance
Sterile Filtered colorless solution.
Purity
Greater than 90.0% as determined by SDS-PAGE.
Usage
THE BioTek's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
Shipped with Ice Packs
In Stock

Description

MAPT Human Recombinant (Isoform 3) fused with a 20 amino acid His tag at N-terminus produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 403 amino acids (1-383 a.a.) and having a molecular mass of 42.1kDa (Molecular size on SDS-PAGE will appear higher). The MAPT is purified by proprietary chromatographic techniques.

Product Specs

Introduction
MAPT is a neuronal microtubule-associated protein localized mostly on axons. It promotes tubulin polymerization and stabilizes microtubules, while also connecting certain signaling pathways to the cytoskeleton. In its hyperphosphorylated form, MAPT is the main component of paired helical filaments (PHF) and neurofibrillary lesions found in the brains of individuals with Alzheimer's disease (AD).
Description
MAPT Human Recombinant (Isoform 3) is a single, non-glycosylated polypeptide chain containing 403 amino acids (1-383 a.a.) with a 20 amino acid His tag at the N-terminus. It is produced in E. coli and has a molecular mass of 42.1 kDa (Molecular size on SDS-PAGE will appear higher). The protein is purified using proprietary chromatographic techniques.
Physical Appearance
Sterile Filtered colorless solution
Formulation
The MAPT solution (1 mg/ml) is supplied in 20mM Tris-HCl buffer (pH 8.0), 10% glycerol, and 0.1M NaCl.
Stability
For short-term storage (2-4 weeks), store at 4°C. For long-term storage, freeze at -20°C. The addition of a carrier protein (0.1% HSA or BSA) is recommended for long-term storage. Avoid repeated freeze-thaw cycles.
Purity
Greater than 90.0% purity as determined by SDS-PAGE analysis.
Synonyms
Microtubule-associated protein tau, Neurofibrillary tangle protein, Paired helical filament-tau, PHF-tau, MAPT, MAPTL, MTBT1, TAU, MSTD, PPND, DDPAC, MTBT2, FTDP-17, FLJ31424, MGC138549.
Source
Escherichia Coli.
Amino Acid Sequence

MGSSHHHHHH SSGLVPRGSH MAEPRQEFEV MEDHAGTYGL GDRKDQGGYT MHQDQEGDTD AGLKAEEAGI GDTPSLEDEA AGHVTQARMV SKSKDGTGSD DKKAKGADGK TKIATPRGAA PPGQKGQANA TRIPAKTPPA PKTPPSSGEP PKSGDRSGYS SPGSPGTPGS RSRTPSLPTP PTREPKKVAV VRTPPKSPSS AKSRLQTAPV PMPDLKNVKS KIGSTENLKH QPGGGKVQII NKKLDLSNVQ SKCGSKDNIK HVPGGGSVQI VYKPVDLSKV TSKCGSLGNI HHKPGGGQVE VKSEKLDFKD RVQSKIGSLD NITHVPGGGN KKIETHKLTF RENAKAKTDH GAEIVYKSPV VSGDTSPRHL SNVSSTGSID MVDSPQLATL ADEVSASLAK QGL.

Product Science Overview

Introduction

Microtubule-Associated Protein Tau (MAPT), commonly referred to as Tau protein, is a critical component in the stabilization and assembly of microtubules in neuronal cells. The specific variant, Tau 383 a.a., is a human recombinant protein consisting of 383 amino acids. This variant is often used in research to understand its role in neurodegenerative diseases, particularly Alzheimer’s disease.

Structure and Isoforms

Tau protein exists in several isoforms, which are produced through alternative splicing of the MAPT gene. The Tau 383 a.a. variant, also known as 0N4R, lacks N-terminal inserts and contains four microtubule-binding repeats . This structure allows it to interact effectively with microtubules, promoting their stability and assembly .

Expression and Purification

The recombinant Tau 383 a.a. protein is typically expressed in Escherichia coli (E. coli) systems. This method allows for high-yield production and easy purification. The protein is often tagged with a His-tag at the N-terminus to facilitate purification through affinity chromatography .

Functional Role

Tau proteins are primarily found in neurons, where they bind to microtubules and promote their assembly and stability. This function is crucial for maintaining the structure and function of axons. The Tau 383 a.a. variant is particularly important in research due to its involvement in the formation of neurofibrillary tangles, a hallmark of Alzheimer’s disease .

Pathological Implications

In neurodegenerative diseases like Alzheimer’s, Tau proteins become hyperphosphorylated, leading to their detachment from microtubules and subsequent aggregation into paired helical filaments and neurofibrillary tangles . These aggregates disrupt neuronal function and contribute to cell death. Studying the Tau 383 a.a. variant helps researchers understand the mechanisms behind these pathological changes and develop potential therapeutic interventions.

Applications in Research

Recombinant Tau 383 a.a. is widely used in various research applications, including:

  • Immunoblotting (Western Blotting): To detect and quantify Tau protein levels in samples .
  • Structural Studies: To understand the interaction between Tau and microtubules .
  • Drug Screening: To identify compounds that can prevent Tau aggregation or promote its clearance .

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