When delving into the world of biochemical research and peptide synthesis, understanding the fundamental building blocks is essential. My journey into laboratory analysis has frequently brought me to the study of the dipeptide alanine cysteine (often referred to as Alanylcysteine or Cysteinyl-Alanine). These small molecules are not just academic curiosities; they Alanylcysteine | C6H12N2O3S | CID 13019623 - structure, chemical names, physical and chemical properties, classification, patents, literature, represent the intersection of structural biology and synthetic chemistry.
Defining the Molecular Landscape
At its core, Cysteinyl-Alanine (C6H12N2O3S) is a fascinating subject of study. Whether looking at Ala-Cys or its isomer Cys-Ala, the chemical properties are distinct. In my experience, these molecules are frequently referenced in PubChem under specific identifiers like CID 20574727. Cysteine is one of the le (a) Sequence of peptide 1-16, where A is L-alanine, C is cysteine, c(x, y) signifies cross-link forming amino acid. (b) Oxidation of peptide 7 to (S)-15A and (R)- ast abundant amino acids in the proteins of many organisms, and the thiol group in its structure makes it unique and has become a focal point for researchers exploring protein stabilization.
When we discuss The DPRA measures the reaction of a chemical with synthetic peptides containing Cysteine (Ac-RFAACA-COOH) or Lysine (Ac-RFAAKAA-COOH) to assess its alanine, we are looking at a non-essential amino acid that serves as a versatile backbone in peptide chains. When these two combine to form a dipeptide, the resulting structure is often used in high-precision laboratory assays.
Practical Applications in Research
One of the most notable aspects of these molecules is that cysteine is a key amino acid in many therapeutic peptides. In my own review of laboratory protocols, I have observed its use in the Direct Peptide Reactivity Assay (DPRA). In this context, a specific Cysteine Peptide (10 mg) for Skin Sensitisation Testing is used in combination with Lysine peptide (Ac-RFAAKAA-COOH) to assess the reactivity of various chemical compounds. This testing methodology is vital for ensuring that synthetic materials behave predictably under controlled conditions.
Furthermore, the study of alanyl cysteine derivatives has expanded into complex structures like the Ala-Cys-Cys-Ala (ACCA) dimer. Research indicates that such dimers can serve as a highly soluble alterna by P Ladiwala · 2024 · Cited by 8 — A highly soluble cysteine containing dipeptide dimer, Ala-Cys-Cys-Ala (ACCA), was evaluated as a suitable alternative to cysteine and cystine in CHO cell tive to cystine and individual cysteine in cell culture environments, potentially allev Solved A solution contains cysteine and alanine. What are iating problematic metabolic bottlenecks.
Synthesis and Transformation
The synthesis of these compounds requires a precise understanding of the dipeptide structure. Whether one is performing solid-phase peptide synthesis or exploring the direct and chemoselective transformation of cysteine to dehydroalanine, the stability of the peptide bond is paramount.
During my explorations, I have noted that even small variations—such as comparing L-alanyl-L-alanine, which is a dipeptide con Alanylcysteine | C6H12N2O3S | CID 13019623 sisting of two L-alanine units, to the sulfur-containing Ala-Cys—yields significant data regarding how these molecules interact with their environment.
Key Takeaways for Researchers
For those interested in the structural nuances:
* Dipeptide vs peptide: A dipeptide is the simplest form of a peptide, consisting of exactly two amino acids. Understanding this dipeptide example is the first step in mastering complex protein synthesis.
* Chemical Stability: The presence of the sulfur atom in cysteine allows for secondary structures, such as disulfide bridges, which are absent in simple alanine-alanine chains.
* Experimental Utility: Whether utilizing a dipeptide for skin sensitization testing or investigating its role as a metabolite, the purity and sequence (Ala-Cys vs Cys-Ala) are critical variables that dictate experimental outcomes.
By maintaining a rigorous focus on the chemical properties of these pept L-Alanyl-L-alanine | C6H12N2O3 | CID 5484352 - PubChem ides, researchers can continue to push the boundaries of synthetic biology. My personal engagement with these materials has reinforced that even the smallest dipeptide bond holds the potential for significant breakthroughs in laboratory science.