Category: Lab Notes

Bioinformatics    Applications of Bioconductor      Bioconductor      BioGRID (Biological General Repository for Interaction Datasets)    clusterProfiler    clusterProfiler Applications  DESeq2  edgeR…

Muscle metabolism determines how skeletal muscle produces, stores, and uses energy during rest and exercise. Explore ATP production, muscle glycogen, glycolysis, fatty acid oxidation, mitochondrial metabolism, amino acid metabolism, insulin signaling, AMPK, muscle protein synthesis, and metabolic flexibility.

Glycogenin is a specialized protein that initiates glycogen synthesis by creating a short glucose primer through self-glucosylation. The glycogenin-linked primer allows glycogen synthase to extend glucose chains, while the glycogen branching enzyme creates the α-1,6 linkages that produce mature glycogen. GYG1 and related glycogenin proteins are therefore important for glycogen structure, glucose storage, liver and muscle metabolism, and normal energy regulation.

Glycogenesis is the biochemical process through which glucose is converted into glycogen for short-term energy storage. It involves glucose-6-phosphate, glucose-1-phosphate, UDP-glucose, glycogenin, glycogen synthase, and the glycogen branching enzyme. Insulin signaling strongly promotes glycogenesis after carbohydrate intake, while liver and skeletal muscle use glycogen stores for different physiological purposes. Understanding glycogenesis provides a foundation for understanding glycogen metabolism, glucose homeostasis, insulin sensitivity, insulin resistance, and exercise metabolism.

Nitrogen metabolism is a network of biological and biochemical processes that control how nitrogen is obtained, transformed, incorporated into biomolecules, and eliminated. Explore its major pathways and their roles in organisms and ecosystems.

Nonessential amino acids are not nutritionally required exclusively from the diet because the body can generally synthesize them. They include important metabolic molecules such as alanine, aspartate, glutamate, and serine, while several related amino acids may become conditionally essential during growth, illness, injury, or metabolic stress.

Amino acids are the molecular building blocks of proteins and important metabolic regulators. They participate in protein synthesis, energy metabolism, nitrogen metabolism, cellular signaling, neurotransmitter production, immune function, antioxidant defense, and tissue maintenance.

Essential amino acids are histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine. They are required for protein synthesis and contribute to muscle metabolism, cellular signaling, energy production, immune function, and numerous metabolic pathways.

Branched-chain amino acids (BCAAs) are the essential amino acids leucine, isoleucine, and valine. They play important roles in protein synthesis, muscle metabolism, energy production, nutrient sensing, mTOR signaling, nitrogen metabolism, exercise physiology, and metabolic health.

Valine is an essential branched-chain amino acid involved in protein synthesis, muscle metabolism and energy production. Learn about valine’s functions, potential benefits, food sources, supplementation, dosage, safety and scientific research.

Understand the meaning of active substance gases under EudraLex Volume 4 Annex 6, including their manufacture, purification, storage, transfer and the regulatory boundary between active substance and medicinal-product manufacture.

Proteolytic cleavage is the enzymatic breakdown of protein peptide bonds by proteases. Explore proteolysis, protease classes, cleavage specificity, zymogen activation, protein degradation, detection, mass spectrometry, and applications.

Protein oxidation is an important form of protein modification caused by reactive oxygen and nitrogen species. Explore its mechanisms, oxidized amino acids, carbonylation, structural effects, detection methods, biological significance, and applications.

Disulfide bond formation connects cysteine residues through covalent sulfur–sulfur bonds. Explore disulfide chemistry, protein folding, PDI, redox regulation, detection, mapping, protein engineering, and applications.

Cysteine oxidation is a key protein redox modification involving reactive cysteine thiol groups. Explore sulfenylation, sulfination, S-glutathionylation, redox signaling, oxidative stress, and detection methods.