Search results
Results From The WOW.Com Content Network
Butanone, also known as methyl ethyl ketone (MEK) or ethyl methyl ketone, [a] is an organic compound with the formula CH 3 C(O)CH 2 CH 3. This colorless liquid ketone has a sharp, sweet odor reminiscent of acetone. It is produced industrially on a large scale, but occurs in nature only in trace amounts. [7]
Ketone bodies are water-soluble molecules or compounds that contain the ketone groups produced from fatty acids by the liver (ketogenesis). [1] [2] Ketone bodies are readily transported into tissues outside the liver, where they are converted into acetyl-CoA (acetyl-Coenzyme A) – which then enters the citric acid cycle (Krebs cycle) and is oxidized for energy.
Absorbed amino acids are typically used to create functional proteins, but may also be used to create energy. [3] They can also be converted into glucose. [4] This glucose can then be converted to triglycerides and stored in fat cells. [5] Proteins can be broken down by enzymes known as peptidases or can break down as a result of denaturation ...
Phase behavior Triple point: 186.5 K (–86.5 °C), ? Pa Critical point: 533 K (260 °C), 4.002 MPa Std enthalpy change of fusion, Δ fus H o: 8.44 kJ/mol Std entropy change
Instead, condensates can form and maintain organization through a range of different processes, the most well-known of which is phase separation of proteins, RNA, and other biopolymers into either colloidal emulsions, gels, liquid crystals, solid crystals, or aggregates within cells. [1]
The set of proteins expressed in a particular cell or cell type is known as its proteome. [54]: 120 The enzyme hexokinase is shown as a conventional ball-and-stick molecular model. To scale in the top right-hand corner are two of its substrates, ATP and glucose.
Sterols and related compounds play essential roles in the physiology of eukaryotic organisms, and are essential for normal physiology of plants, animals, and fungi. [4] For example, cholesterol forms part of the cellular membrane in animals, where it affects the cell membrane's fluidity and serves as secondary messenger in developmental signaling.
A particular biosynthetic pathway may be located within a single cellular organelle (e.g., mitochondrial fatty acid synthesis pathways), while others involve enzymes that are located across an array of cellular organelles and structures (e.g., the biosynthesis of glycosylated cell surface proteins).