Signal peptidedatabase The il 2 signal peptide plays a crucial role in the secretion of interleukin-2 (IL-2), a vital cytokine for immune responses. Understanding its function and how it can be modified is essential for research and potential therapeutic applications. This peptide, located at the N-terminus of the protein, acts as a molecular address label, directing the nascent IL-2 protein to the endoplasmic reticulum for processing and subsequent secretion from the cell. Research indicates that alterations to this signal peptide can significantly augment protein secretion, making it a target for optimizing the production of recombinant IL-2 and other proteins.
Interleukin-2 (IL-2) is a cytokine primarily produced by activated CD4-positive helper T-cells, and to a lesser extent by other immune cells like CD8-positive T-cells and natural killer (NK) cells. Its production is tightly regulated, with transcription and mRNA stabilization being key control points.Interleukin-2 (IL-2, Aldesleukin, PROLEUKIN®) However, for IL-2 to exert its function, it must be secreted from the cell.IL2 General Information This process is initiated by the il 2 signal peptide, a short sequence of amino acids at the N-terminus of the precursor protein. This signal peptide is recognized by the cellular machinery responsible for protein translocation into the secretory pathway, ensuring that IL-2 is released into the extracellular environment to signal other immune cells.
The effectiveness of the IL-2 signal peptide in facilitating protein secretion has led to its widespread use in various biotechnological applicationsThe Long Signal Peptide Isoform and Its Alternative .... Studies have demonstrated that modifying this peptide, particularly in its hydrophobic and basic domains, can enhance the secretion of proteins both *in vitro* and *in vivo*pCDNA3IL-2 signal mFc (Plasmid #128042) Purpose (Empty Backbone) Mammalian expression vector with C terminalIL-2 signal peptideand mFc. This optimization is crucial for research purposes, where obtaining sufficient quantities of recombinant proteins is often a prerequisite for detailed analysis and experimentation. For instance, researchers have explored using the IL-2 signal peptide to improve the expression of IL-2 in host systems like *E. coli*, aiming to identify the "best signal peptides" for efficient production.
The concept of modifying the il 2 signal peptide to boost protein secretion is a significant area of research作者：N Nazifi·2019·被引用次数：5—To predict thebest signal peptides for the expression of IL-2in Gram-negative bacteria (E. coli), forty-five sequences of SPs were extracted .... The signal peptide sequence itself contains critical information that dictates its interaction with the cellular translocation machinery. By altering specific residues within this peptide, scientists have been able to increase the yield of secreted proteins.Assessment of Signal Peptides to Optimize Interleukin 2 (IL ... This is particularly relevant in the context of recombinant protein production, where maximizing the efficiency of secretion can lead to higher titers and more cost-effective manufacturing processes.
Research has shown that modifications to the IL-2 signal peptide can lead to significantly increased levels of secreted proteins in the culture medium compared to the wild-type. This has led to the development of expression vectors that incorporate optimized IL-2 signal peptides, making them a valuable tool for researchers seeking to produce proteins with high secretion efficiency. The selection of appropriate signal peptides is critical, and tools like the Signal Peptide Database can aid in identifying sequences with desirable properties for secretion. While the IL-2 signal peptide is widely used and consistently effective, ongoing research aims to predict and engineer even better signal peptides for specific expression systems, such as optimizing IL-2 expression in Gram-negative bacteria like *E. coli*.
The ability to enhance protein secretion via modifications to the il 2 signal peptide has broad implications.作者：L Zhang·2005·被引用次数：161—Over a range of DNA concentrations and times, the most effectiveIL-2 signal peptideincreased AP levels in the medium compared to the wild-type ... Beyond optimizing the production of IL-2 itself, this strategy can be applied to a range of other secreted proteins.SignalP 6.0 - DTU Health Tech - Bioinformatic Services For example, chimeric signal peptides, which combine elements from different signal sequences, including IL-2, have been explored for protein production. This flexibility allows researchers to tailor the secretion machinery to specific protein targets.IL-2蛋白主要由活化的CD4阳性辅助T细胞产生，在免疫反应和耐受中发挥重要作用。与IL-2R 结合可通过JAK1 和JAK3 磷酸化诱导下游信号传导，从而激活多种途径，包括STAT、PI3K 和 ...
It is important to note that the IL-2 signal peptide is primarily intended for research use and is not for clinical applications.Signal Sequence-Dependent Orientation of Signal Peptide ... Its function is to facilitate the secretion of proteins, and its use is governed by specific experimental designs. Understanding the basic structure and function of signal peptides, which are short peptides at the N-terminus that carry information for protein secretion, is fundamental to appreciating the role of the il 2 signal peptideSignal Peptide Database - Mammalia. While the IL-2 gene/cDNA encodes the protein, the signal peptide is a distinct functional element that directs its extracellular localization.
In conclusion, the il 2 signal peptide is a critical component that facilitates the secretion of interleukin-2 and serves as a valuable tool for enhancing protein production in research settings. Its modification offers a promising avenue for optimizing recombinant protein yields, underscoring its importance in molecular biology and biotechnology.
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