STX3 Human

Syntaxin-3 Human Recombinant
Cat. No.
BT8810
Source
E.coli.
Synonyms
Syntaxin-3, STX3, STX3A.
Appearance
Sterile Filtered colorless solution.
Purity
Greater than 95% 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

STX3 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 288 amino acids (1-263 a.a) and having a molecular mass of 33.2kDa.
STX3 is fused to a 25 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

Product Specs

Introduction
Syntaxin 3 (STX3) is a protein belonging to the syntaxin family. Syntaxins act as receptors on cells for transport vesicles, facilitating exocytosis in neutrophils. STX3 is crucial for neurite development and serves as a direct target for omega-6 arachidonic acid. It localizes to the apical membrane of epithelial cells, where it clusters and plays a vital role in establishing and maintaining cell polarity. This polarity is essential for proper protein trafficking, including vesicle fusion and exocytosis.
Description
Recombinant human STX3, expressed in E. coli, is a single, non-glycosylated polypeptide chain consisting of 288 amino acids (with residues 1-263 present) and having a molecular weight of 33.2 kDa. A 25 amino acid His-tag is fused to the N-terminus to facilitate purification using proprietary chromatographic methods.
Physical Appearance
A sterile, colorless solution, free from particulate matter.
Formulation
The STX3 protein is supplied at a concentration of 1 mg/ml in a buffer consisting of 20 mM Tris-HCl (pH 8.0), 2 mM DTT, 10% glycerol, and 100 mM NaCl.
Stability
For short-term storage (2-4 weeks), the protein can be stored at 4°C. For extended storage, freezing at -20°C is recommended. The addition of a carrier protein (0.1% HSA or BSA) is advised for long-term storage. Repeated freeze-thaw cycles should be avoided.
Purity
The purity of the STX3 protein is greater than 95% as assessed by SDS-PAGE analysis.
Synonyms
Syntaxin-3, STX3, STX3A.
Source
E.coli.
Amino Acid Sequence
MGSSHHHHHH SSGLVPRGSH MGSHMMKDRL EQLKAKQLTQ DDDTDAVEIA IDNTAFMDEF FSEIEETRLN IDKISEHVEE AKKLYSIILS APIPEPKTKD DLEQLTTEIK KRANNVRNKL KSMEKHIEED EVRSSADLRI RKSQHSVLSR KFVEVMTKYN EAQVDFRERS KGRIQRQLEI TGKKTTDEEL EEMLESGNPA IFTSGIIDSQ ISKQALSEIE GRHKDIVRLE SSIKELHDMF MDIAMLVENQ GEMLDNIELN VMHTVDHVEK ARDETKKAVK YQSQARKK.

Product Science Overview

Structure and Function

Syntaxin-3 is a target membrane protein, also known as a t-SNARE (target-SNAP receptor). SNARE proteins are a large protein family that mediates vesicle fusion, a process that is vital for the transport of molecules within cells. The SNARE complex is formed by the interaction of a vesicle protein (v-SNARE) and a target membrane protein (t-SNARE). Syntaxin-3, along with other syntaxins, plays a pivotal role in this complex formation.

Localization and Role in Cells

Syntaxin-3 is predominantly localized at the plasma membrane. It cycles between the plasma membrane and the trans-Golgi network, which is a key component of the cell’s sorting and dispatching system for proteins and lipids. This cycling is believed to be important for the regulation of t-SNARE function .

Recombinant Human Syntaxin-3

Recombinant human Syntaxin-3 is produced using recombinant DNA technology. This involves inserting the gene encoding Syntaxin-3 into a host organism, such as Escherichia coli (E. coli), which then expresses the protein. The recombinant protein is typically tagged with a polyhistidine tag at the N-terminus to facilitate purification. The recombinant human Syntaxin-3 protein consists of 278 amino acids and has a predicted molecular mass of approximately 32.4 kDa. It is often used in research to study the protein’s function and interactions .

Applications in Research

Recombinant Syntaxin-3 is used in various biochemical and biophysical studies to understand its role in membrane fusion and vesicle trafficking. It is also employed in structural studies to elucidate the detailed mechanisms of SNARE complex formation and function. Understanding the function of Syntaxin-3 can provide insights into various cellular processes and may have implications in understanding diseases related to vesicle trafficking and membrane fusion.

Storage and Stability

Recombinant human Syntaxin-3 is typically provided as a lyophilized powder and should be stored under sterile conditions at -20°C to -80°C. It is recommended to aliquot the protein to avoid repeated freeze-thaw cycles, which can degrade the protein. The protein is stable for up to twelve months when stored properly .

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