
1) Amino acid 2) Amino acid found in collagen 3) Aminoalkanoic acid 4) Consumer electronics brand
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Pro. A naturally occurring amino acid with a heterocyclic ring that is classified as nonessential in the diet.
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http://antoine.frostburg.edu/chem/senese/101/glossary/p.shtml
[company] ProLine is a range of own brand electronic products made by Darty plc for BCC{Disambiguation needed|date=September 2014} in the Netherlands, Darty in France and Vandenborre in Belgium. ProLine covers a wide range of electricals across the store, covering white and brown goods. Comet was the sole UK outlet but went into administrat...
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http://en.wikipedia.org/wiki/ProLine_(company)

== Biosynthesis == Proline is biosynthetically derived from the amino acid L-glutamate. Glutamate-5-semialdehyde is first formed by glutamate 5-kinase (ATP-dependent) and glutamate-5-semialdehyde dehydrogenase (which requires NADH or NADPH). This can then either spontaneously cyclize to form 1-pyrroline-5-carboxylic acid, which is reduced to proli...
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http://en.wikipedia.org/wiki/Proline

an amino acid obtained by hydrolysis of proteins. Its molecule contains a secondary amino group (>NH) rather than the primary amino group (>NH2) ... [3 related articles]
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http://www.britannica.com/eb/a-z/p/120

one of 20 amino acids common in proteins. It is a common amino acid of collagen and like lycine must be hydroxylated by ascorbic acid in order to allow the formation of hydrogen bonds which will hold the triple helix together.
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<amino acid> One of the 20 amino acids directly coded for in proteins. Structure differs from all the others, in that its side chain is bonded to the nitrogen of the _ amino group, as well as the _ carbon. This makes the amino group a secondary amine and so proline is described as an imino acid. Has strong influence on secondary structure of ...
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http://www.encyclo.co.uk/local/20973

(pro´lēn) a nonessential amino acid that is a major constituent of collagen.
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http://www.encyclo.co.uk/local/21001

(= pro; P; 115D) One of the 20 amino acids directly coded for in proteins. Structure differs from all the others, in that its side chain is bonded to the nitrogen of the a -amino group, as well as the a -carbon. This makes the amino group a secondary amine, and so proline is described as an imino acid. Has strong influence on secondary structure of proteins and is much more abundant in collagens than in other proteins, occurring especially in the sequence glycine-proline hydroxyproline. A proline-rich region seems to characterize the binding site of SH3 domains. See Table A2.
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(Pro) Type: Term Pronunciation: prō′lēn Definitions: 1. the l-isomer is found in proteins, especially the collagens. Synonyms: pyrrolidine-2-carboxylate
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http://www.medilexicon.com/medicaldictionary.php?t=72679

Proline: An amino acid, one of the 20 building blocks of protein. A dietary nonessential amino acid, proline is a major constituent of collagen. Symbol: Pro.
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[
n] - an amino acid that is found in many proteins (especially collagen)
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http://www.webdictionary.co.uk/definition.php?query=proline
noun an amino acid that is found in many proteins (especially collagen)
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https://www.encyclo.co.uk/local/20974

an alcohol-soluble amino acid, CHNHCOOH, occurring in high concentration in collagen. Abbr.: Pro; Symbol: P
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https://www.infoplease.com/dictionary/proline
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