In the world of biochemical research and peptide synthesis, few motifs have garnered as much interest as the YIGSR peptide sequence. As someone who actively follows advancements in extracellular matrix (ECM) mimetics, I have found the study of this specific pentapeptide to be incredibly fascinating. Whether you are exploring its role in cell-matrix interactions or its potential in advanced material science, understanding the fundamental structure of this molecule is essential.
Decoding the YIGSR Sequence
At its core, the YIGSR peptide is a short, functional motif derived from the basement membrane protein laminin. Specifically, it represents the 929–933 sequence of the β1 chain. The sequence one letter code is simply Y-I-G-S-R, which translates to the amino acid chain: Tyr-Ile-Gly-Ser-Arg.
To break it down further, this pentapeptide consists of Tyrosine, Isoleucine, Glycine, Serine, and Arginine. When looking at the molecular weight, it typically sits around 594.67 g/mol for the standard form. Researchers often utilize the Laminin Peptide YIGSR-NH2 (amidated version), which has a slightly different molecular weight of approximately 593.67 Da, often preferred for its enhanced stability in specific experimental conditions.
The Role of Lami YIGSR, a Synthetic Laminin Pentapeptide, Inhibits nin Fragment 929-933
The YIGSR (Laminin Fragment 929-933) is widely recognized as a major receptor-bind Laminin Pentapeptide - 5 mg ing site. In my experience reviewing literature on this topic, it is clear that this sequence found on the B1 chain of laminin acts as a crucial signal for cell adhesion Laminin Peptide YIGSR-NH2has a molecular weight of 593.67Da and a purity of ≥98%. It is soluble in water and should be stored at-20℃. and migration.
Many researchers focus on the YIGSR sequence is the major receptor binding site because of how it interacts with the 67 kDa laminin-binding protein. Thi by Z Meng·2018·Cited by 37—The peptideTAT-H6-K(C18)-YIGSRdisplayed transfection efficiencies at N/P ratios of 6, which was 3.5 and 7 times higher than that of Lipo 2000 in B16F10 and Read more s interaction is what makes it such a powerful tool in studies involving cell-adhesive activity. Whet 23 Mar 1998—We have examined the mechanism of signaling by the 67 kDaYIGSRbinding protein of laminin and its properties in neuroblastoma cells. her it is used in its native form or integrated into complex delivery systems like DSPE-PEG1000-YIGSR, the specificity of this Tyr-Ile-Gly-Ser-Arg motif remains its most significant attribute.
Comparative Insights: YIGSR vs. Other Sequences
When comparing various bioactive peptides, you will often see YIGSR mentioned alongside others like IKVAV (from the α1 chain YIGSR (Laminin Fragment 929-933) is a polypeptide that inhibits tumor growth and metastasis of leukemia cells. YIGSR specifically binds to the 67kDa laminin Read more ). While both are vital for understanding how cells organize into tissues, the YIGSR within the B1 chain is uniquely studied for its specific inhibitory effects on cell-matrix interactions.
It is interesting to note how variations in the sequence YIGSR can alter performance. For instance, in some advanced gene transfection studies, researchers have utilized the TAT-H6-K(C18)-YIGSR construct to improve efficiency. This demonstrates that the YIGSR (Tyr–Ile–Gly–Ser–Arg) laminin β1 chain sequence is not just a passive structural component, but a versatile functional unit.
Practical Considerations for Handling
If you are sourcing this for research, you will frequently encounter the pentapeptide in a lyophilized powder form. Most high-quality suppliers provide the sequence, YIGSR with a purity level of ≥98%.
When storing these materials, standard protocols usually recommend:
* Temperature: -20°C for long-term stability.
* Solubility: The peptide is generally soluble in water, though specific buffers may be required depending on your experimental design.
* Verification: Always cross-reference the CAS registry number (11 YIGSR 0590-64-2) to ensure you are working with the correct Tyr-Ile-Gly-Ser-Arg isomer.
Final Reflections
The YIGSR sequence continues to be a cornerstone in the study of structural biology. By focusing on the 929–933 sequence of the β1 chain, scientists can better understand the complex signaling pathways involved in tissue development and cell behavior. As more sequences are discovered, the YIGSR motif remains a reliable standard for those of us interested in the intersection of synthetic chemistry and biological function.
Whether you are looking at the pentapeptide YIGSR for its adhesive properties or its role in signaling, the precision of this Tyr-Ile-Gly-Ser-Arg chain highlights the incredible specificity found within the laminin protein structure. Always ensure you are sourcing from reputable providers to maintain the inte Laminin Peptide YIGSR grity of your peptide research.