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2. Isotopic labeling - Wikipedia

   en.wikipedia.org/wiki/Isotopic_labeling

   A carbon-13 label was used to determine the mechanism in the 1,2- to 1,3-didehydrobenzene conversion of the phenyl substituted aryne precursor 1 to acenaphthylene. [ 3 ] An isotopic tracer , (also "isotopic marker" or "isotopic label"), is used in chemistry and biochemistry to help understand chemical reactions and interactions.

3. List of EC numbers (EC 7) - Wikipedia

   en.wikipedia.org/wiki/List_of_EC_numbers_(EC_7)

   This list contains a list of sub-classes for the seventh group of Enzyme Commission numbers, EC 7, translocases, placed in numerical order as determined by the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology.

4. Enzyme Commission number - Wikipedia

   en.wikipedia.org/wiki/Enzyme_Commission_number

   The Enzyme Commission number (EC number) is a numerical classification scheme for enzymes, based on the chemical reactions they catalyze. [1] As a system of enzyme nomenclature, every EC number is associated with a recommended name for the corresponding enzyme-catalyzed reaction. EC numbers do not specify enzymes but enzyme-catalyzed reactions.

5. Enzyme - Wikipedia

   en.wikipedia.org/wiki/Enzyme

   [1]: 8.1.1 For example, flavin and heme cofactors are often involved in redox reactions. [1]: 17 Enzymes that require a cofactor but do not have one bound are called apoenzymes or apoproteins. An enzyme together with the cofactor(s) required for activity is called a holoenzyme (or haloenzyme).

6. List of EC numbers (EC 1) - Wikipedia

   en.wikipedia.org/wiki/List_of_EC_numbers_(EC_1)

   This enzyme was already in the Enzyme List as EC 1.1.1.206, tropine dehydrogenase so EC 1.1.1.293 has been withdrawn at the public-review stage EC 1.1.1.294 : chlorophyll(ide) b reductase EC 1.1.1.295 : momilactone-A synthase

7. List of enzymes - Wikipedia

   en.wikipedia.org/wiki/List_of_enzymes

   3.3 Function and clinical importance of some enzymes in category 3.2.1. ... EC 1.13.11 (With incorporation of two atoms of ... EC number Examples; EC 5.5.1.1:

8. Atom - Wikipedia

   en.wikipedia.org/wiki/Atom

   To visualize the minuteness of the atom, consider that a typical human hair is about 1 million carbon atoms in width. [77] A single drop of water contains about 2 sextillion (2 × 10 21) atoms of oxygen, and twice the number of hydrogen atoms. [78] A single carat diamond with a mass of 2 × 10 −4 kg contains about 10 sextillion (10 22) atoms ...

9. Charge number - Wikipedia

   en.wikipedia.org/wiki/Charge_number

   Atomic numbers (Z) are a special case of charge numbers, referring to the charge number of an atomic nucleus, as opposed to the net charge of an atom or ion. The charge numbers for ions (and also subatomic particles ) are written in superscript, e.g., Na + is a sodium ion with charge number positive one (an electric charge of one elementary ...