Online Google Dictionary

cofactor 中文解釋 wordnet sense Collocation Usage Collins Definition
Noun
/ˈkōˌfaktər/,
Font size:

cofactors, plural;
  1. A contributory cause of a disease

  2. A substance (other than the substrate) whose presence is essential for the activity of an enzyme

  3. The quantity obtained from a determinant or a square matrix by removal of the row and column containing a specified element

  1. a substance (as a coenzyme) that must join with another to produce a given result
  2. A cofactor is a non-protein chemical compound that is bound to a protein and is required for the protein's biological activity. These proteins are commonly enzymes, and cofactors can be considered "helper molecules" that assist in biochemical transformations. ...
  3. In linear algebra, the cofactor describes a particular construction that is useful for calculating both the determinant and inverse of square matrices. Specifically the cofactor of the (i, j) entry of a matrix, also known as the (i, j) cofactor of that matrix, is the signed minor of that entry.
  4. (Cofactors) Vitamin B6 (Pyridoxine, pyridoxamine, pyridoxal → pyridoxal phosphate)
  5. (cofactors) factors that affect HIV transmission probability. These may include genital ulcer disease, herpes simplex virus, bacterial vaginosis, and trichomonas infection.
  6. An inorganic or organic substance that binds to a specific type of enzyme to activate it. Vitamins and minerals frequently serve as cofactors.
  7. A type of molecule that helps enzymes carry out chemical reactions.
  8. A compound needed by an enzyme to carry out the reaction it catalyzes.
  9. A substance, microorganism or environmental factor that activates or enhances the action of another entity such as a disease-causing agent. Cofactors may influence the progression of a disease or the likelihood of becoming ill. ...
  10. non-protein component(s) needed by an enzyme to be functional; some cofactors are metal ions, others are coenzymes (q.v.).
  11. A general term referring either to a co-activator or co-repressor.
  12. For enzyme-catalyzed reactions, a cofactor is something other than the enzyme itself that is required. Cofactor is a general term. A cofactor may be organic or inorganic (e.g., metal ions), and may be loosely or tightly (even covalently) bound to the enzyme. ...
  13. any agent or characteristic that enhances or activates disease progression.
  14. A small molecule required for enzyme activity. It could be organic in nature, like a coenzyme, or inorganic in nature, like a metallic cation.
  15. A molecule that combines with an enzyme in order for that enzyme to function. The cofactor of Phenylalanine (Phe) is Tetrahydrobiopterin (BH4).
  16. A substance that must be present for another substance to be able to perform a certain function.
  17. A substance needed for the catalytic action of an enzyme; generally used in reference to inorganic ions such as Ca++ and Mg++.
  18. Any nonprotein molecule or ion that is required for the proper functioning of an enzyme. Co factors can be permanently bound to the active site or may bind loosely with the substrate during catalysis.
  19. Compound or element required for the activity of an enzyme; generally a coenzyme or metal ion: B, Ca, Co, Cu, Fe, K, Mg, Mn, Mo, Na, Se, Zn
  20. A factor other than the pathogen itself that increases the likelihood of developing a disease. Although no definite co-factor has been identified for HIV/AIDS, scientists suspect that a history of other infections (particularly sexually transmitted diseases) or other lifestyle factors may ...
  21. An organic molecule or inorganic ion necessary for the normal catalytic activity of an enzyme.