In th Radioimmunoassay of Human Fibrinopeptide A e specialized field of peptide research and biochemical analysis, precision regarding molecular specifications is paramount. As an enthusiast who frequently analyzes the structural properties of various proteins and peptides, I have spent considerable time examining the data associated with Fibrinopeptide A, particularly its molecular weight. Understanding these granular details is essential for anyone looking to maintain high standards in laboratory settings or analytical studies.
The Structural Profile of Fibrinopeptide A
Fibrinopeptide A is a short, 16-amino acid peptide derived from the N-terminal region of the fibrinogen Aα-chain. When discussing its physical properties, the molecular weight is a central metric for identification and purity verification. Most literature and analytical databases consistently re Other size, Get quote ; Other Forms of Fibrinopeptide A, human: Fibrinopeptide A, human TFA In-stock ; Molecular Weight. 1536.56 ; Sequence Shortening. port the molecular weight of human Fibrinopeptide A at approximately 1536.6 g/mol (often cited as 1536.56 or 1536.57 g/mol).
For researchers, these variations—often depending on the salt form or specific synthesis batch—are common. For instance, while the base peptide sits at 1536.6, modified versions like Fibrinopeptide A [Tyr0] can reach a molecular weight of 1699.76. Additional Human Fibrinopeptide A acetate is a 16-amino acid peptide from fibrinogen's N-terminal Aα, cleaved by thrombin. ly, variations such as human acetate forms may show a distinct molecular formula (e.g., C65H101N19O28), resul Fibrinopeptide ting in a calculated mo Measurement of Fibrinopeptide A in Human Blood - PMC - NIH lecular weight of 1596.65.
Contextualizing Fibrinopeptide within Fibrinogen Systems
To understand the fibrinopeptide fully, one must look at the parent molecule. Fibrinogen is a 340 000 molecular weight hexamer, which serves as the precursor for these peptides. During biochemical enzymatic processes, the mass of the fibrinogen molecule is reduced as thrombin cleaves the specific sequences. This action is the primary mechanism by which Fibrinopeptides A and B are crucial for blood clot formation.
It is fascinating to compare these small segments to larger protein structures. For context, FXIII has a molecular mass of 325 kDa, demonstrating the significant scale difference between these regulatory peptides and the complex proteins that govern structural integrity in biological models.
Analytical Considerations and Observations
When documenting these peptides, keeping track of the formula and the precise mol mass is vital for experimental reproducibility. My personal experience with high-purity samples—typically those with purity > 95%—confirm Human Fibrinopeptide A acetate is a 16-amino acid peptide from fibrinogen's N-terminal Aα, cleaved by thrombin. s that subtle differences in the molecular weight (such as the 1551.65 for certain B-type analogs or the 1570.7 for [Glu1]-Fibrinopeptide B) are critical indicators of the peptide’s specific modification state.
Whether you are working with Fibrinopeptide A or related structures, always ensure your documentation notes the specific salt form, as this significantly impacts the molecular weight (g/mol) recorded in your logs.
Summary of Key Data Points
* Standard Fibrinopeptide A: Commonly documented at 1536.6 g/mol.
* Fibrinopeptide B Variants: Often range from 1551.65 to 1570.7 depending on the specific sequence.
* Biological Context: Fibrinopeptide A is a substance released as blood clots in your body, functioning as a marker for enzymatic activity.
* Scale: While the peptide is small (~1.5 kDa), the parent molecule is a massive 340,000 molecular weight hexamer.
By maintaining rigor in documenting the molecular weight and physical characteristics of these peptides, one can better appreciate the intricate biochemistry that governs these molecular interactions. Always verify y Fibrinopeptide A blood test: MedlinePlus Medical Encyclopedia our specific batch data against the provided technical specifications to ensure your research remains accurate and consistent.