"Trp-Pro-Arg-Pro" is a tetrapeptide, a chain of four amino acids, consisting of tryptophan (Trp), proline (Pro), arginine (Arg), and another proline (Pro). This specific sequence of amino acids is not a common peptide found in proteins but can be synthesized for various purposes in research or pharmaceuticals. The properties and functions of "Trp-Pro-Arg-Pro" would be influenced by the unique arrangement of these amino acids, with tryptophan contributing to the peptide's potential to interact with other molecules due to its aromatic nature, proline introducing rigidity in the peptide structure due to its cyclic side chain, and arginine providing a positively charged side chain that can interact with negatively charged molecules. The exact biological activity or application of "Trp-Pro-Arg-Pro" would depend on the context in which it is used, such as in drug design or as a research tool to study peptide-protein interactions.
The CAS Registry Mumber 73413-88-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,4,1 and 3 respectively; the second part has 2 digits, 8 and 8 respectively. Calculate Digit Verification of CAS Registry Number 73413-88: (7*7)+(6*3)+(5*4)+(4*1)+(3*3)+(2*8)+(1*8)=124 124 % 10 = 4 So 73413-88-4 is a valid CAS Registry Number.