Cofactor (biochemistry) - Wikipedia
网页Cofactor (biochemistry) The succinate dehydrogenase complex showing several cofactors, including flavin, iron–sulfur centers, and heme. A cofactor is a non- protein chemical compound or metallic ion that is required for an enzyme 's role as a catalyst (a catalyst is a substance that increases the rate of a chemical reaction).
Cofactor - Definition, Types and Examples - Biology Dictionary
网页2017年4月27日 · A cofactor is a non-protein chemical that assists with a biological chemical reaction. Co-factors may be metal ions, organic compounds, or other chemicals that have helpful properties not usually found in amino acids.
辅因子 - 维基百科，自由的百科全书
网页輔因子[1][2] （英語： cofactor）是生物体系中，使 酶 （酵素）显现活性所需、对热稳定、非 蛋白质 小分子 化合物 或金属 水合离子。. 辅因子能促进酶及反应物进入 活化状态 （催化），通常作为电子、原子、某些化学基团的 载体，而决定反应的性质。. 某些 ...
辅因子 - 百度百科
网页英汉生化词典将辅因子（cofactors）定义为“一种酶的活性所需要的一种非 蛋白质 成分”。. 这种辅因子可能是一种金属离子激活剂或一种 有机分子 （辅酶）。. 它们或松或紧地与酶相结合；紧密接合的辅因子称为“辅基”。. 将 激活剂 （activator）定义为“一种 ...
5.2: Enzyme Cofactors - Chemistry LibreTexts
网页2021年5月17日 · There are two types of cofactors: inorganic ions [e.g., zinc or Cu (I) ions, also known as minerals] and organic molecules known as coenzymes. Most coenzymes are vitamins or are derived from vitamins. When the cofactor is tightly bonded to the polypeptide chain through a covalent bond is called a prosthetic group.
Cofactor | Vitamins, Enzymes, Metabolism | Britannica
网页Cofactor, a component, other than the protein portion, of many enzymes. If the cofactor is removed from a complete enzyme (holoenzyme), the protein component (apoenzyme) no longer has catalytic activity. A cofactor that is firmly bound to the apoenzyme and cannot be removed without denaturing the.
6.8: Cofactors and Catalysis - A Little Help From My Friends
网页2024年8月25日 · Cofactors are molecules that bind to enzymes and are required for catalytic activity. They can be divided into two major categories: metals and coenzymes. Metal cofactors commonly found in human enzymes include iron, magnesium, manganese, cobalt, copper, zinc, and molybdenum.
19.2: Enzyme Cofactors - Chemistry LibreTexts
网页Other enzymes contain a nonprotein component called a cofactor that is necessary for the enzyme’s proper functioning. There are two types of cofactors: inorganic ions [e.g., zinc or Cu (I) ions] and organic molecules known as coenzymes. Most coenzymes are vitamins or are derived from vitamins.
Protein - Cofactors, Enzymes, Amino Acids | Britannica
网页2024年9月9日 · Protein - Cofactors, Enzymes, Amino Acids: Although some enzymes consist only of protein, many are complex proteins; i.e., they have a protein component and a so-called cofactor. A complete enzyme is called a holoenzyme; if the cofactor is removed, the protein, no longer enzymatically active, is called the apoenzyme.
Cofactors are Remnants of Life’s Origin and Early Evolution
网页2021年2月6日 · These cofactors are essential components of energy metabolism and the redox reactions that drive the synthesis of biomolecules. Two other group transfer cofactors that are central to metabolism are coenzyme A (CoA), which transfers acyl groups, and S-adenosylmethionine (SAM), which transfers methyl groups.