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2) "Citrate" -- As to magnesium citrate
citrate
Pronunciation: 'si-"trAt
Function: noun
Etymology: International Scientific Vocabulary
: a salt or ester of citric acid Pronunciation Symbols
Chemical structure of citric acid. A citrate is an ionic form of citric acid, such as C3H5O(COO)33−, that is, citric acid minus three hydrogen ions.
Citrates are compounds containing this group, either ionic compounds, the salts, or analogous covalent compounds, esters. An example of a salt is sodium citrate and an ester is trimethyl citrate. See category for a bigger list.
Since citric acid is a multifunctional acid, intermediate ions exist, hydrogen citrate ion, HC6H5O72− and dihydrogen citrate ion, H2C6H5O7−. These may form salts as well, called acid salts.
Salts of the hydrogen citrate ions are weakly acidic, while salts of the citrate ion itself (with an inert cation such as sodium ion) are weakly basic.
Citrate is a key component in the commonly used SSC 20X hybridization buffer. There exists authoritative literature (Maniatis) that incorrectly instructs the preparation of this buffer to include 3M NaCl and 0.3M Sodium Citrate, to be titrated up with NaOH to a pH of 7. When the two components are actually mixed together, the pH is slightly basic. Therefore, the pH of the solution should instead be titrated down to 7 with HCl.
- 1 Metabolism
- 1.1 TCA cycle
- 1.2 Role in Glycolysis
- 2 See also
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Citrate is an intermediate in the TCA (Krebs) Cycle. After the pyruvate dehydrogenase complex forms acetyl CoA, from pyruvate and five cofactors (Thiamine pyrophosphate, lipoamide, FAD, NAD+, and CoA), citrate synthase catalyzes the condensation of oxaloacetate with Acetyl CoA to form citrate. Citrate continues in the TCA cycle with the eventual regeneration of oxaloacetate, which can combine with another molecule of acetyl CoA and continue cycling.
See also TCA cycle
High concentration of citrate can ..."
Further Data On Term for magnesium citrate
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