In the rapidly evolving field of molecular biology and biochemical research, the designation S400 often appears in diverse contexts, ranging from high-resolution chromatography resins to specific phosphorylation sites on complex proteins. For researchers and laboratory professionals, navigating the distinction between these entities is essential for experimental accuracy. This article explores the various scientific applications of S400, moving from structural biology to analytical instrumentation.
The Significance of S400 in Protein Phosphorylation and O-GlcNAcylation
In protein science, S400 frequently refers to a specific serine residue at position 400 within a polypeptide chain. This site is a critical focal point for post-translational modifications, which regulate protein function and stability.
SR-BI (scavenger receptor class B member 1, SCARB1) belongs to the CD36 family and acts as a cell surface lipoprotein receptor for a variety of ligandsOne of the most notable areas of study involves tau O-GlcNAcylation at S400. Research has demonstrated that S400 is an important O-GlcNAcylated site in the Tau protein, acting as a regulatory switch that influences protein aggregation. When investigating these mechanisms, scientists often utilize a synthesized peptide derived from Human PR around t Gene delivery: A single nuclear localization signal peptide he phosphorylation site of S400 to map interaction pathways. Furthermore, a Rabbit Polyclonal MAP3K8/COT phospho S400 antibody is often employed in immunohistochemistry to detect these specific states in human tissue samples, providing verifiable data on kinase activity.
Beyond tau, S400 phosphorylation has been implicated in mitochondrial regulation, specifically regarding the HtrA2 protein, where it helps maintain membrane potential under cellular stress. These findings underscore why researchers prioritize high-quality custom peptide synthesis when designing probes to study these delicate molecular interactions.
Analytical Tools: Chromatography and Instrumen Feb 16, 2011 — Effect of S400 O-GlcNAcylation on GSK3β-mediated phosphorylation in Tau[392-411] peptide. To probe the activity of an AD-relevant kinase which tation
Outside of amino acid positioning, the alphanumeric code "S400" is synonymous with specialized laboratory hardware and separation media.
Sephacryl S-400 HR
The Sephacryl S-400 HR is a gold-standard resin used in size-exclusion chromatography. It is specifically engineered for the fractionation of globular pro Supports pH, ORP and ISFET measurements. Further flexibility through a method-based approach, and numerous measurement and calibration options. Professional pH teins and the separation of polysaccharides. When comparing methodologies, researchers often contrast it with the Sephacryl S-300 High Resolution resin to d by BS Cooperman · 2005 · Cited by 21 — Ribonucleotide reductases (RRs) form a family of allosterically regulated enzymes that catalyze the conversion of ribonucleotides to 2′-deoxyribonucleotides etermine the optimal por Phosphorylation of HtrA2 by cyclin-dependent kinase-5 is e size for their specific pr Relationship between peptide structure and antimicrobial otein purification needs. The high-resolut SR-BI (scavenger receptor class B member 1, SCARB1) belongs to the CD36 family and acts as a cell surface lipoprotein receptor for a variety of ligands ion nature of these matrices is indispensable for achieving the purity levels required for downstream mass spectrometry or structural analysis.
Instrumentation and Synthesis
The designation also extends to analytical equipment, such as the SevenExcellence pH meter S400-Micro-Kit, which supports pH, ORP and ISFET measurements. Additionally, in the realm of manufacturing, the Model 400 is a pilot production scale peptide synthesizer designed to prepare pharmaceutical peptides for research and development workflows.
Navi by BS Cooperman · 2005 · Cited by 21 — Ribonucleotide reductases (RRs) form a family of allosterically regulated enzymes that catalyze the conversion of ribonucleotides to 2′-deoxyribonucleotides gating Research Integrity and Safety
It is vital to distinguish between specialized research reagents and substances intended for other purposes. In the broader landscape of peptides, there is strict regulatory oversight regarding substances that are not approved for human consumption. For instance, BPC-157 is not a dietary ingredient and is classified as an unapproved substance; its use may lead to negative health effects.
Researchers must ensure that their work remains strictly within the bounds of laboratory-grade inquiry. When studying Tau Peptide (244-274) or the Spike peptide C400-P421, the focus should always be on the biochemical parameters—such as binding affinity, structural stability, and enzymatic activity—rather than non-scientific applications. Understanding the Scavenger receptor B type 1: expression, molecular regulation, and cholesterol transport function is a perfect example of how targeted, rigorous research advances our knowledge of human physiology without crossing into clinical advice.
Conclusion
Whether you are performing western blots using a specific phospho-antibody or purifying complex proteins via high-resolution chromatography, the term S400 serves as a vital marker in modern laboratory science. By maintaining a focus on verifiable data and utilizing high-quality, research-grade reagents, the scientific community continues to unlock the complexities of protein regulation and molecular interaction. Always rely on authenticated standards and verified analytical protocols to ensure the integrity of your experimental results.