S100A5 Human

S100 Calcium Binding Protein A5 Human Recombinant
Cat. No.
BT30140
Source
Escherichia Coli.
Synonyms
Protein S100-A5, Protein S-100D, S100 calcium-binding protein A5, S100A5, S100D.
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

S100A5 Human Recombinant fused with a 20 amino acid His tag at N-terminus produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 112 amino acids (1-92 a.a.) and having a molecular mass of 12.9kDa. The S100A5 is purified by proprietary chromatographic techniques.

Product Specs

Introduction
The S100A5 protein, a member of the S100 family, possesses two EF-hand motifs that enable calcium binding. S100 proteins are commonly found within the cytoplasm and/or nucleus of various cell types and play a crucial role in regulating cellular processes, including cell cycle progression and differentiation. Notably, S100A5 exhibits a significantly higher affinity for Ca2+ compared to other S100 proteins, exceeding them by 20 to 100 fold under similar conditions. Moreover, S100A5 can bind to Zn2+ and Cu2+, with a particularly strong affinity for Cu2+. However, it's important to note that Cu2+ binding can negatively impact Ca2+ binding. In adult brains, S100A5 expression is restricted to specific regions.
Description

Recombinant human S100A5, expressed in E. coli, is a single, non-glycosylated polypeptide chain with a 20 amino acid His tag attached to its N-terminus. It consists of 112 amino acids, including the 92 amino acids of S100A5 (residues 1-92), resulting in a molecular weight of 12.9 kDa. The purification process for S100A5 involves proprietary chromatographic techniques.
Physical Appearance
The product is a clear and colorless solution that has been sterilized by filtration.
Formulation
The provided S100A5 solution has a concentration of 1 mg/ml and is formulated in a buffer containing 20 mM Tris-HCl (pH 8.0), 1 mM DTT, 30% glycerol, 0.1 M NaCl, and 0.1 mM PMSF.
Stability

For short-term storage (up to 4 weeks), the solution can be stored at 4°C. For extended storage, it is recommended to store the solution at -20°C. To enhance stability during long-term storage, adding a carrier protein (0.1% HSA or BSA) is advisable. It is crucial to minimize freeze-thaw cycles to maintain product integrity.

Purity
The purity of the S100A5 protein is greater than 90%, as determined by SDS-PAGE analysis.
Synonyms
Protein S100-A5, Protein S-100D, S100 calcium-binding protein A5, S100A5, S100D.
Source
Escherichia Coli.
Amino Acid Sequence
MGSSHHHHHH SSGLVPRGSH METPLEKALT TMVTTFHKYS GREGSKLTLS RKELKELIKK ELCLGEMKES SIDDLMKSLD KNSDQEIDFK EYSVFLTMLC MAYNDFFLED NK.

Product Science Overview

Introduction

S100 Calcium Binding Protein A5 (S100A5) is a member of the S100 family of proteins, which are characterized by their ability to bind calcium ions through EF-hand motifs. These proteins play crucial roles in various cellular processes, including cell cycle progression and differentiation .

Structure and Function

S100A5 contains two EF-hand calcium-binding motifs, which are responsible for its high affinity for calcium ions. Interestingly, S100A5 has a Ca2+ affinity that is 20- to 100-fold higher than other S100 proteins studied under identical conditions . Additionally, S100A5 can bind zinc (Zn2+) and copper (Cu2+) ions, with Cu2+ binding strongly enough to impair the binding of Ca2+ .

Expression and Localization

S100A5 is expressed in very restricted regions of the adult brain, indicating its specialized functions in the central nervous system . The protein is localized in the cytoplasm and/or nucleus of a wide range of cells .

Recombinant S100A5

Recombinant human S100A5 is produced using Escherichia coli expression systems and is available for research purposes. The recombinant protein is typically purified to >90% purity and is suitable for applications such as SDS-PAGE and mass spectrometry .

Applications and Research

Due to its high affinity for calcium and its ability to bind other metal ions, S100A5 is of interest in various research areas, including neurobiology and cancer research. Its role in cell cycle regulation and differentiation makes it a valuable target for studying cellular processes and potential therapeutic interventions .

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