il2 signal peptide IL2 gene / cDNA is a protein-coding gene - Interleukin 2 precursor 3 IL-2 signal mFc The Crucial Role of the IL-2 Signal Peptide in Protein Secretion and Immune Function

Human IL-2 The IL-2 signal peptide is a critical N-terminal sequence that directs the secretion of Interleukin-2 (IL-2), a vital cytokine produced primarily by activated CD4-positive helper T-cells, and to a lesser extent by activated CD8-positive T-cells and natural killer (NK) cells. Understanding the structure and function of this signal peptide is paramount for researchers aiming to optimize protein production for therapeutic or research purposes, as well as for comprehending the intricate mechanisms of immune response.

IL-2 itself is a signaling molecule that plays a pivotal role in the immune systemIL-2 signal peptide(N terminal on backbone). Growth in Bacteria. Bacterial Resistance(s). Ampicillin, 100 μg/mL. Growth Temperature. 37°C. Growth Strain(s).. It is essential for the proliferation, differentiation, and survival of various immune cells, including T-cells, B-cells, and NK cells. Its involvement in immune regulation and tolerance is well-documented, making it a target for various immunotherapies. A significant aspect of IL-2's function lies in its ability to be secreted from cells, a process intricately regulated by its signal peptide.

The Mechanism of Signal Peptide Action

The signal peptide acts as a molecular address label, guiding the nascent polypeptide chain to the endoplasmic reticulum (ER) during translation. This sequence, typically around 20 amino acids long, possesses a characteristic structure with a positively charged N-terminus, a hydrophobic core, and a cleavage site that is recognized by signal peptidase. Once the IL-2 protein precursor enters the ER, the signal peptide is cleaved off, allowing the mature protein to fold correctly and be further processed through the secretory pathway.

Research has demonstrated that modifications to the IL-2 signal peptide can significantly augment protein secretion.IL2 cDNA ORF clone, Homo sapiens(human) - Gene Studies have shown that altering specific residues within the signal peptide can lead to increased levels of IL-2 in the medium, both *in vitro* and *in vivo*.Construction of expression plasmids containing the wild- ... For instance, alterations such as ILco1-, ILco2-, and ILba3- have been identified as effective in augmenting protein secretion under a variety of conditions.pCDNA3 IL-2 signal mFc (Plasmid #128042) This suggests that optimizing the signal peptide sequence is a viable strategy for enhancing the yield of recombinant IL-2 and other secreted proteinsInterleukin 2.

One study highlighted that when the signal peptide was more basic near its amino terminal and more hydrophobic in the middle region, IL-2 production increased by as much as 20-fold.Next-day shippingcDNA ORF clones derived from IL2 interleukin 2available at GenScript, starting from .00. This empirical evidence underscores the importance of the signal peptide’s physicochemical properties in determining secretion efficiency. This principle has been applied in various biotechnological applications, including the development of expression systems for producing biologically active IL-2.

Applications and Research Tools

The understanding of the IL-2 signal peptide's function has led to the development of various research tools and methodologies. For example, cDNA ORF clones derived from IL2 interleukin 2 are commercially available and often engineered to include the IL-2 signal peptide to facilitate secretion from host cells.For this study, we chose theIL-2 signal peptide, which is consistently effective at increasing protein secretion in vitro and is widely used in both commercial ... Plasmids like pcDNA3-IL-2 signal mFc are designed with an IL-2 signal peptide at the N-terminus, enabling the secretion of fused proteins, such as the Fc domain, in mammalian expression systems.

Furthermore, computational tools like SignalP 6.0 are invaluable for predicting the presence and location of signal peptides in protein sequences, aiding in the identification of potential secretion signals. The Signal Peptide Database provides curated information on known signal peptides, including entries for IL2_HUMAN, which is confirmed to possess a signal peptide.2016年5月2日—1. the gene of interest should be placed immediately after thesignal sequencefor the production with a native end. You don't need the ATG but can have it if ...

The research community actively investigates the best signal peptides for the expression of IL-2 in various hosts, including bacteria like *E. coli*.Dynamics and variegation in the Treg response to Interleukin-2 - PNAS Predicting the best signal peptides to express IL-2 in EConstruction of expression plasmids containing the wild- .... coli is crucial for cost-effective and high-yield production of the cytokine. Interestingly, some studies have shown that expression of a mature mouse IL-2 gene can result in interleukin secretion even without the requirement for a leader sequence, suggesting that the cellular machinery can sometimes facilitate secretion of proteins lacking a canonical signal peptide under specific conditions.Cytokine produced by activated CD4-positive helper T-cellsand to a lesser extend activated CD8-positive T-cells and natural killer (NK) cells.

The Broader Context of IL-2 Signaling

Beyond its role in secretion, IL-2 is central to T cell activation. It acts as a third signal in T cell activation, alongside the T cell receptor (TCR) signal and co-stimulatory signals. Upon binding to its receptor complex, which includes the IL-2 R beta subunit, IL-2 initiates downstream signaling cascades, such as the JAK-STAT pathway, which are critical for immune cell function. The IL-2 R beta is described as a 551 amino acid precursor type I membrane protein with a 26 amino acid signal peptide.

The study of IL-2 and its signaling pathways is ongoing, with research exploring areas such as the dynamics and variegation in the Treg response to Interleukin-2 and the development of engineered IL-2 variants with improved therapeutic propertiesConstruction of expression plasmids containing the wild- .... For instance, modified IL-2 signal peptides have been shown to increase serum levels of molecules like endostatin and alkaline phosphatase, suggesting broader implications beyond just IL-2 secretion作者：Z Wu·2020·被引用次数：118—Over a range of DNA concns. and times, the most effectiveIL-2 signal peptideincreased AP levels in the medium compared to the wild-type IL-2 ....

In summary, the IL-2 signal peptide is a fundamental element in the life cycle of Interleukin-2.Methods: This study was designed to predict thebest signal peptides to express IL-2 in E. coli. To predict the best signal peptides for the expression of IL-2 ... Its precise sequence and structure dictate the efficient secretion of this crucial immune signaling molecule.Alteration in the IL-2 signal peptide affects secretion of ... Ongoing research continues to unravel the complexities of IL-2 biology, with advancements in understanding and manipulating its signal peptide holding significant promise for both fundamental research and the development of novel therapeutic strategiesAlteration in the IL-2 signal peptide affects secretion of .... The IL2 gene itself, located on chromosome 4q27, is conserved across various species, highlighting the evolutionary importance of this cytokine and its regulatory elements.