Proline - Pro - nonessential amino acid - structure, properties ...
网页2023年11月23日 · Proline. Proline was the second amino acid synthesized before its presence as a product of the hydrolysis of the protein molecule was established. Willstatter, investigating the position of the carboxyl group in N-methylproline, first obtained this amino acid in 1900. Next year, Fischer published a synthesis of Proline from phthalimide ...
脯氨酸 - 维基百科，自由的百科全书
网页脯氨酸 （Proline，縮寫為 Pro 或 P ）是一個α- 氨基酸，又是一個環狀胺基酸，20個 DNA 編碼的其中之一。 它极易溶于水，微溶于乙醇、丙酮、苯，不溶于乙醚、丙醇。 虽然属于 蛋白胺基酸，并不是 伯胺 而是 仲胺 （旧称为 亞胺酸），因此具有特殊構象剛性，影響肽的 二級結構。 其對應 密碼子 為CCU、CCC、CCA和CCG。 脯氨酸不是一種 必需氨基酸，人體可以自行合成。 在20個蛋白質形成氨基酸中，其最特別之處在於胺氮被綁定到並非一個而是 …
Proline - Wikipedia
网页Proline is the only proteinogenic secondary amino acid which is a secondary amine, as the nitrogen atom is attached both to the α-carbon and to a chain of three carbons that together form a five-membered ring. History and etymology.
脯氨酸 - 百度百科
网页脯氨酸（Proline，缩写为Pro 或P），化学式为C5H9NO2，分子量为115.13，是一种环状的亚氨基酸。 α-亚氨基酸，中性，等电点为6.30，水中溶解度比任何氨基酸都大，25℃时100g水中可溶162g左右。
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Proline | Amino Acid, Protein Structure & Peptide Bonds
网页proline, an amino acid obtained by hydrolysis of proteins. Its molecule contains a secondary amino group (>NH) rather than the primary amino group (>NH 2) characteristic of most amino acids. Unlike other amino acids, proline, first isolated from casein (1901), is readily soluble in alcohol.
Proline | C5H9NO2 | CID 145742 - PubChem
网页Proline is one of the twenty amino acids used in living organisms as the building blocks of proteins. Proline is sometimes called an imino acid, although the IUPAC definition of an imine requires a carbon-nitrogen double bond. Proline is a non-essential amino acid that is synthesized from glutamic acid. It is an essential component of collagen ...
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Proline: The Distribution, Frequency, Positioning, and Common ...
网页2013年1月25日 · Proline is an anomalous amino acid. Its nitrogen atom is covalently locked within a ring, thus it is the only proteinogenic amino acid with a constrained phi angle. Sequences of three consecutive prolines can fold into polyproline helices, structures that join alpha helices and beta pleats as architectural motifs in protein configuration.
Proline metabolism and redox; maintaining a balance in health …
网页2021年7月22日 · Proline is a non-essential amino acid with key roles in protein structure/function and maintenance of cellular redox homeostasis. It is available from dietary sources, generated de novo within cells, and released from protein structures; a noteworthy source being collagen.