In the evolving field of targeted delivery systems, the dodecapeptide known as GE11 (YHWYGYTPQNVI) has become a cornerstone for researchers focused on the epidermal growth factor receptor (EGFR). As an enthusiast documenting my journey through biochemical reagents, I have frequently navigated the complexities of sourcing this specific ligand. Understanding the nuances of GE11 peptide sigma availability is essential by T Hailing·2022·Cited by 53—GE11 peptideis one of the potent EGFR ligand screened from a phage display peptide library. It is a dodecapeptide that can specifically binds to EGFR with high Read more for any laboratory or independent researcher looking to incorporate this molecule into their experimental workflows.
Understanding the GE11 Peptide Sequence and Function
The GE11 peptide was initially identified via phage display technology. It is a 12-amino-acid peptide that demonstrates a specific affinity for EGFR, with a dissociation constant (KD) reported at approximately 22 nM. Because GE11 is an active peptide, it has garnered significant interest for its potential as a targeting moiety. Unlike natural EGF, which can trigger receptor-mediated mitogenic signaling, the GE11 peptide sequence is often cited for its ability to bind the receptor without inducing the same level of internalization or proliferative signaling, making it a "smart" candidate for drug carrier systems.
Research Applications and Material Integration
My experience with functionalized materials, such as DSPE-PEG2000-GE11, highlights the versatility of this ligand. Researchers often use this conjugate to stabilize nanoliposomes for targeted delivery. Furthermore, the development of GE11-CSO GE11 was identified as a potential EGFR-specific peptidein 2005 by phage display and was shown to bind with a K d of 22.3 ± 0.4 nM to the EGFR.Read more -SPION micelles as an MRI contrast agent represents a sophisticated application for diagnostic imaging in high-EGFR-expression environments.
When discussing GE11-Se NPs (selenium nanoparticles), the focus shifts toward localized therapeutic delivery. The primary goal is All products offered bySigma Peptidesare strictly designated For Research Use Only (RUO). These products are sold exclusively to qualified researchers and Read more to enhance the precis by WW Xu·2017·Cited by 47—In this study, dual therapeutic-loadedGE11 peptide-conjugated liposomes were developed and applied to enhance therapeutic efficacies of standard-of-care Read more ion of antitumor studies. However, it is vital to acknowledge the technical challenges reported in recent literature: some studies suggest that GE11 exhibits an insufficient affinity to the EGFR when used as a monomer, leading to ongoing investigations into multivalent presentations or Fc-fusion constructs to improve binding stability.
Navigating Procurement and Sigma Peptides
For those looking to buy research peptides, the procurement process requires a clear understanding of institutional policies. If you are searching for Sigma Peptide or related catalog entries, you will likely find that these materials are strictly designated for Research Use Only (RUO).
1. Verification: Always confirm the catalog number (e.g., ABIN2874272 for synthetic variants) and the purity levels required for your specific assay.
2. Availability: While you may search for gd11 or other catalog codes, ensure you are distinguishing between the specific EGFR-targeting GE11 and other unrelated sequences that may appear in broader databases.
3. Documentation: Suppliers often require proof of affiliation with a research facility. The availabil GE11 was identified as a potential EGFR-specific peptidein 2005 by phage display and was shown to bind with a K d of 22.3 ± 0.4 nM to the EGFR.Read more ity of peptides in bulk or custom synthesis formats is standard, but the lead time for custom modificati Towards Radiolabeled EGFR-Specific Peptides ons can vary.
E-E-A-T Considerations in Peptide Research
When utilizing these compounds, rigor is paramount. GE11 is studied as a peptide ligand across diverse platforms, from liposomes to radiotracers. A 27-amino acid, cell-permeablepeptideencoded by exon 1B of human calpastatin that acts as a potent inhibitor of calpain I and calpain II.Read more As a researcher, I emphasize the importance of validating the binding affinity of your specific batch, as synthesis methods (such as ultrasound-assisted solid-phase synthesis) can influence the final efficacy. GE11 was identified as a potential EGFR-specific peptide over a decade ago, and while it remains a vital tool, the field is constantly refining how we utilize these sequences to avoid off-target effects.
Whether you are designing a new delivery system or testing the diagnostic potential of GE11, maintaining a clear chain of custody and adhering to the strict "Research Use Only" guidelines is critical. By focusing on the biochemical properties and the specific structural requirements of the EGFR-targeting mechanism, researchers can cont Jul 28, 2022—As there are only few studiesavailableon the development of EGFR-specific radiotracers based on theGE11 peptidelead and all of them showing Read more inue to push the boundaries of what is possible with these sophisticated molecular tools.