Rumen degradable protein (RDP) is feed protein that can be broken down by microbial enzymes in the rumen (neutral pH) where the resulting nitrogen, AA's or peptides are either utilized to meet microbial requirements or if unused, ammonia which is absorbed across the rumen wall and either recycled or excreted. Look up P. J. Van Soest "Nutritional Ecology of the Ruminant" in googlebooks for a more detailed description.
A bypass protein is one used in rumen protein degradation.
Protein degradation and muscle breakdown.
Protein degradation occurs in the body primarily in the proteasomes, which are specialized structures within cells responsible for breaking down and recycling proteins that are no longer needed.
Pepsinogen is the precursor for Pepsin, an enzyme for the degradation of protein.
proteasome
The liver produces the proteins that are secreted into the blood. The liver is responsible for protein metabolism, degradation and synthesis
Polyubiquitylation involves the attachment of a chain of ubiquitin molecules to a target protein, signaling it for degradation primarily by the proteasome. This process typically occurs through the action of E3 ubiquitin ligases, which facilitate the transfer of ubiquitin from a ubiquitin-conjugating enzyme to the substrate protein. The polyubiquitin chain is recognized by the proteasome, which unfolds and translocates the protein into its catalytic core for degradation into smaller peptides. This mechanism is crucial for regulating protein levels, removing damaged or misfolded proteins, and maintaining cellular homeostasis.
Two mechanisms of protein regulation in eukaryotic cells are post-translational modifications, such as phosphorylation or glycosylation, that can alter protein activity, stability, or localization. Another mechanism is protein degradation through the ubiquitin-proteasome system, which targets proteins for degradation when they are tagged with ubiquitin.
Ubiquitin tagging allows the 19S subunit of the 26S proteasome to recognize the potential protein substrate.
Protein degradation is called proteolysis, which is the breakdown of proteins into amino acids or smaller peptide fragments. Protein synthesis is the process of creating new proteins using the genetic information encoded in DNA through transcription and translation.
Proteins are destroyed through a process called proteolysis, where enzymes break down the protein molecules into smaller fragments. Factors that contribute to protein degradation include pH levels, temperature, presence of enzymes, and oxidative stress.
Movement of molecules through a cell over time