Magnesium in biology | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-10

This is an audio version of the Wikipedia Article:
Magnesium in biology


00:01:00 1 Function
00:02:18 1.1 Human health
00:04:32 1.1.1 Nerve conduction
00:04:59 1.1.2 Hypertension
00:05:43 1.1.3 Diabetes and glucose tolerance
00:06:05 2 Dietary recommendations
00:09:22 3 Food sources
00:13:16 4 Biological range, distribution, and regulation
00:13:19 5 Biological chemistry
00:16:22 5.1 Chlorophyll
00:17:18 5.2 Enzymes
00:17:44 5.3 Essential role in the biological activity of ATP
00:19:06 5.4 Nucleic acids
00:19:32 5.5 Cell membranes and walls
00:20:50 5.6 Proteins
00:21:56 5.7 Manganese
00:23:09 5.8 Importance in drug binding
00:24:14 6 Measuring magnesium in biological samples
00:24:55 6.1 By radioactive isotopes
00:25:06 6.2 By fluorescent indicators
00:26:31 6.3 By electrophysiology
00:27:05 6.4 By absorption spectroscopy
00:28:09 7 Magnesium transport
00:29:22 7.1 Ligand ion channel blockade
00:31:36 8 Plant physiology of magnesium
00:32:15 8.1 Nutritional requirements and interactions
00:32:46 8.2 Distributing magnesium ions within the plant
00:35:37 8.3 Magnesium, chloroplasts and photosynthesis
00:40:48 8.4 Magnesium stress
00:43:56 9 See also
00:47:03 10 Notes



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SUMMARY
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Magnesium is an essential element in biological systems. Magnesium occurs typically as the Mg2+ ion. It is an essential mineral nutrient (i.e., element) for life and is present in every cell type in every organism. For example, ATP (adenosine triphosphate), the main source of energy in cells, must bind to a magnesium ion in order to be biologically active. What is called ATP is often actually Mg-ATP. As such, magnesium plays a role in the stability of all polyphosphate compounds in the cells, including those associated with the synthesis of DNA and RNA.
Over 300 enzymes require the presence of magnesium ions for their catalytic action, including all enzymes utilizing or synthesizing ATP, or those that use other nucleotides to synthesize DNA and RNA. [cite needed]
In plants, magnesium is necessary for synthesis of chlorophyll and photosynthesis.