t7 peptide T7 - t-500-peptide peptide

ta1-peptide-dosage The T7 peptide is a fascinating molecule with diverse applications, primarily stemming from its ability to target specific receptors and its utility as a research tool. This exploration delves into the nature of the T7 peptide, its origins, its various forms, and its significant roles in scientific research and potential therapeutic applications.

Understanding the T7 Peptide: Origins and Structure

The term "T7 peptide" can refer to a few distinct entities, but the most prominent ones are derived from either the T7 bacteriophage or from tumstatin, an endogenous inhibitor.

* T7 Bacteriophage Origin: One common form of the T7 peptide is a short peptide sequence, typically 11 amino acids long, derived from the major capsid protein (gp10) of the T7 bacteriophage. This sequence, often represented as MASMTGGQQMG, is widely used as a T7 tag peptide in molecular biology. Its primary function is to serve as an epitope tag, allowing for the detection and purification of recombinant proteins expressed from vectors engineered with the T7 promoter作者：GT Part—All signalpeptide-sfGFP fusions were expressed under the control of theT7promoter on the pET-28a(+) vector in E. coli BL21(DE3) for .... This T7 tag peptide can be fused to the N-terminus of a target protein, facilitating its identification using T7 tag antibodies in various immunoassays and for affinity purification. The high purity of T7 tag peptide ensures reliable performance in these applications.

* Tumstatin-Derived Origin: Another significant T7 peptide is an active fragment of tumstatin, specifically the Tumstatin (74-98), human sequenceTheT7tag is a shortpeptidetag derived from the leader sequence of theT7bacteriophage major capsid protein.. Tumstatin itself is an endothelial cell-specific inhibitor and is derived from the non-collagenous 1 domain of the type IV collagen α3 chain (α3(IV))T7TagPeptideis a protein tag consisting of 11 residues from the N-terminus of theT7bacteriophage capsid protein gp10.T7TagPeptidecan be fused to the N- .... This T7 peptide has demonstrated properties as an endothelial cell-specific inhibitor of protein synthesis. A key characteristic of this T7 peptide is its specific interaction with the transferrin receptor (TfR), which is often overexpressed on tumor cells. Sequence variations of this T7 peptide, such as those with histidine at the C-terminus, have also been explored.

The T7 Peptide in Targeted Drug Delivery

The ability of certain T7 peptides to bind to the transferrin receptor (TfR) has made them invaluable as targeting ligands in drug delivery systems. The TfR is a transmembrane protein that plays a crucial role in iron uptake and is highly expressed not only on tumor cells but also on endothelial cells forming the blood-brain barrier (BBB).

* Tumor Targeting: The overexpression of TfR on various cancer cells makes the T7 peptide an attractive choice for directing therapeutic agents specifically to tumors. T7 peptide-modified nanoparticles, such as T7 peptide-conjugated lipid nanoparticles, have been developed to enhance the delivery of chemotherapeutic drugs like irinotecan hydrochloride. These targeted approaches aim to increase drug concentration within the tumor while minimizing systemic toxicity.D-T7 Peptide-Modified PEGylated Bilirubin Nanoparticles ... For instance, T7 peptide-modified macrophage membrane-coated nanoparticles have been investigated for their enhanced therapeutic efficacy.

* Overcoming the Blood-Brain Barrier (BBB): The TfR's presence on the BBB also presents an opportunity for delivering therapeutics to the central nervous system. T7 peptide-ligated nanocarriers can mediate the transport of drugs across the BBB, a significant challenge in treating brain tumors and neurological disorders. Research exploring T7 peptide-containing peptide gene delivery vectors for efficient transfection of brain tumors highlights this potential.

* Enhanced Biocompatibility and Efficacy: The incorporation of T7 peptides into drug delivery systems can also improve their overall performance. For example, T7 peptide-modified pH-sensitive liposomes have shown greater effectiveness and safety compared to free drugs or unmodified liposomes. The targeted modification with T7 peptide has been shown to remarkably enhance therapeutic efficacy while vastly ameliorating biocompatibility.

The T7 Peptide as a Research Tool

Beyond drug delivery, the T7 peptide serves critical roles in fundamental biological research.

* Protein Expression and Detection: As mentioned earlier, the T7 tag peptide is a cornerstone of recombinant protein expression.T7 peptide It allows researchers to easily identify and isolate target proteins from complex cellular extracts using T7 tag antibodies. This is fundamental for studying protein function, interactions, and structures.Palmitoyl Tetrapeptide- 7 - Olive Tree People The T7 promoter is widely used in expression vectors, often in conjunction with T7 RNA polymerase, for high-level protein production in E干品多肽的重量中不仅仅包含多肽，还包含有一些非肽的组份，如水、被吸收的溶剂、配位离子和盐等。肽的净含量是指肽在其中的重量百分比，这个百分比的数值范围很大，可能从50% .... coli BL21(DE3) strains.

* Investigating Cellular Processes: The tumstatin-derived T7 peptide has been instrumental in studying endothelial cell biology and angiogenesis. Its ability to inhibit endothelial cell proliferation and migration, partly through interactions with integrin αvβ3 and downstream signaling pathways like FAK and PI3-kinase, provides insights into tumor growth and metastasis.T7TagPeptide.png Full screen Zoom in Zoom out PubChem 1.2 3D Status Conformer generation is disallowed since too many atoms, too flexible. Studies exploring the therapeutic potential of small peptides often include molecules like tumstatin fragmentsHigh-purityT7TagPeptidefor efficient protein tagging and detection applications, ensuring reliable performance and quality from APExBIO. Order now..

* Peptide Synthesis and Modification: Researchers often work with modified versions of the T7 peptide, such as Cys-T7 Peptide, where a cysteine residue is introduced for further conjugation.T7 Tag Peptide, AMS.TP1805-10-MG This allows for the creation of more complex bioconjugates, including T7 peptide-conjugated lipid nanoparticles and other advanced delivery vehicles.T7 Peptide-modified macrophage membrane-coated ... The synthesis of peptides with specific modifications, like the N-terminal Cysteine in Cys-T7 Peptide, is crucial for these applications.

Variations and Related Concepts

The term "T7 peptide" is sometimes used loosely, and it's important to distinguish between the different applications.

* T7 Tag vs.Transferrin receptor targeting segment T7 containing ... Tumstatin Fragment: While both are referred to as "T7 peptide", their origins and primary functions differ significantly作者：Z Wang·2015·被引用次数：143—A special ligandpeptideof TfR, HAIYPRH (T7), can specially bind to TfR and mediate the transport of nanocarriers across the BBB. Recently,T7- .... The T7 tag is an artificial construct for protein labeling, whereas the tumstatin-derived T7 peptide is a biologically active molecule with inherent therapeutic potential.

* T7 Promoter: The T7 promoter is a DNA sequence that drives the transcription of genes, often in the context of recombinant protein expression systems.T7 Tag Peptide TFA | 50000+ Bioactive Molecules It is intimately linked with the use of the T7 tag peptide.

* Other Peptide Applications: The broader field of peptides and peptides encompasses a vast array of molecules with diverse biological activities. The success of the T7 peptide in targeted delivery and research inspires the development of other peptides for similar applications, such as modulating signaling pathways or acting as antimicrobial agents.

In conclusion, the T7 peptide, in its various forms, represents a powerful tool in both fundamental research and applied biomedical science.T7 Peptide (Synonyms: Tumstatin (74-98), human) Whether as a crucial T7 tag peptide for protein detection or as a targeted delivery agent for therapeutics, its versatility and specific receptor-binding capabilities continue to drive innovation in molecular biology and medicine. The exploration of T7 peptide cytotoxicity in specific cancer models and the development of advanced T7 peptide-modified biomaterials further underscore its evolving significance.