In the expansive field of biochemical research, few molecules have garnered as much attention as osteopontin peptides. As a user and observer of laboratory-grade reagents, I have found that understanding the structural nuances of these molecules is essential for anyone working with extracellular matrix proteins. Osteopontin (OPN), also known as SPP1, is a protein that is encoded by the SPP1 gene in humans, serving as a critical subject for those exploring cellular signaling and structural biology.
Defining Osteopontin and Its Structural Significance
At its core, Osteopontin (OPN) is a multifunctional protein present in many human tissues and body fluids, including bone, skin, urine, milk, and blood. It is characterized as PEPITEM enhances bone mineralization, formation and strength, and reverses bone loss in animal models of disease. an e Product name: Recombinant human OPN, SPP1 protein. Source: e coli.-derived Osteopontin (OPN), also known as SPP1, is a secreted glycophosphoprotein xtracellular structural protein and represents the principal phosphorylated glycoprotein of bone. When we discuss osteopontin peptides, we are often referring to synthetic fragments, such as the well-known PEP-1622, which corresponds to 18 amino acids near the amino terminus of the protein.
From a structural perspective, Osteopontin (OPN) is a phosphorylated glycoprotein secreted into body fluids by vario by B Karasalih · 2025 · Cited by 14 — Osteopontin (OPN) is a multifunctional protein present in many human tissues and body fluids including bone, skin, urine, milk, and blood [1]. OPN is generally us cell types. It functions as a major non-collagenous bone protein that binds tightly to hydroxyapatite, playing a vital role in the mineralization process. One of its most famous features is that it is an arginine-glycine-aspartic acid (RGD)-containing glycoprotein, which interacts with integrins and CD44 as major receptors.
Research Applications and Utility
My experience with these reagents highlights their diverse utility in the lab. For instance, researchers often utilize synthetic osteopontin and peptides for assay development. A common application involves using these sequences as a blocking peptide—these are peptides that b Blocking peptides are peptides that bind specifically to the target antibody and block antibody binding. These peptide usually contains the epitope recognized ind specifically to the target antibody and block antibody binding, ensuring the specificity of Western blot or immunohistochemistry experiments.
Furthermore, products like the 000-000-404 osteopontin peptide are considered ideal for SDS-PAGE, providing reliable markers for protein analysis. The specificity of these fragments allows for precise interaction studies:
* RGD-Sequence Functionality: The RGD-containing peptide fragment of osteopontin is frequently studied for its role in cellular adhesion and migration.
* Osteoblast Interaction: We know that Osteopontin is produced by osteoblasts under stimulation by calcitriol, which underscores its importance in bone remodeling studies.
* Immunological Roles: Osteopontin (OPN) is a whey protein believed to play a role in the early life immune function, making it a subject of interest in nutritional biochemistry.
Emerging Insights into OPN-Derived Sequences
The research landscape continues to evolve. For example, specific sequences like OPNpt9 have been identified as having potential neuroprotective effects against ischemic brain injury, suggesting that the functional domains of OPN extend far beyond structural support. Additionally, studies involving chimeric designs—where researchers create fusion peptides of Osteopontin is produced by osteoblasts under stimulation by calcitriol and binds tightly to hydroxyapatite. It is also involved in the anchoring of osteoclasts statherin and osteopontin—demonstrate how we can manipulate these molecules for biomineralization research.
It is also worth noting the ongoing investigation into related motifs. While PEPITEM enhances bone mineralization, formation and strength, the broader family of SIBLING (Small Integrin-Binding Ligand N-linked Glycoprotein) proteins, by A Miyauchi · 1991 · Cited by 521 — Synthetic osteopontin and peptides from the osteopontin and bone sialoprotein sequences containing Arg-Gly-Asp stimulated immediate reductions in osteoclast to which OPN belongs, remains a cornerstone of connective tissue study.
Final Reflections
Whether you are investigating the role of Osteopontin (Opn) in vascularization or utilizing recombinant fragments for antibody characterization, the depth of current literature is staggering. The ability to isolate specific domains—such as those by A Miyauchi · 1991 · Cited by 521 — Synthetic osteopontin and peptides from the osteopontin and bone sialoprotein sequences containing Arg-Gly-Asp stimulated immediate reductions in osteoclast containing the RGD motif—allows for a granular understanding of how this protein mediates communication between the extracellular matrix and cellular receptors. By leveraging these high-quality synthetic peptides, we can continue to map the complex biological pathwa The RGD-containing peptide fragment of osteopontin ys in which this remarkable glycoprotein participates.