amino acid

noun Biochemistry.

any of a class of organic compounds that contains at least one amino group, –NH2, and one carboxyl group, –COOH: the alpha-amino acids, RCH(NH2)COOH, are the building blocks from which proteins are constructed.

Compare essential amino acid.

Origin of amino acid

First recorded in 1895–1900

Words nearby amino acid

aminate, Amindivi Islands, amine, amino, aminoacetic acid, amino acid, amino-acid dating, amino acid dehydrogenase, aminoacidemia, amino acid oxidase, amino acids

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for amino acid

Peptides provide a cheese with its distinct flavor, based on the configuration of these amino-acid chains.
Why We Love Stinky Cheese|Stacey Slate|January 14, 2010|DAILY BEAST

British Dictionary definitions for amino acid

amino acid

noun

any of a group of organic compounds containing one or more amino groups, -NH 2, and one or more carboxyl groups, -COOH. The alpha-amino acids RCH(NH 2)COOH (where R is either hydrogen or an organic group) are the component molecules of proteins; some can be synthesized in the body (nonessential amino acids) and others cannot and are thus essential components of the diet (essential amino acids)

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for amino acid

amino acid

n.

Any of various organic acids containing both an amino group and a carboxyl group, especially any of the 20 or more compounds that link together to form proteins.

Scientific definitions for amino acid

amino acid

Any of a large number of compounds found in living cells that contain carbon, oxygen, hydrogen, and nitrogen, and join together to form proteins. Amino acids contain a basic amino group (NH2) and an acidic carboxyl group (COOH), both attached to the same carbon atom. Since the carboxyl group has a proton available for binding with the electrons of another atom, and the amino group has electrons available for binding with a proton from another atom, the amino acid behaves as an acid and a base simultaneously. Twenty of the naturally occurring amino acids are the building blocks of proteins, which they form by being connected to each other in chains. Eight of those twenty, called essential amino acids, cannot be synthesized in the cells of humans and must be consumed as part of the diet. The remaining twelve are nonessential amino acids.

单词	amino acid
释义	amino acid noun Biochemistry. any of a class of organic compounds that contains at least one amino group, –NH2, and one carboxyl group, –COOH: the alpha-amino acids, RCH(NH2)COOH, are the building blocks from which proteins are constructed. Compare essential amino acid. Origin of amino acid First recorded in 1895–1900 Words nearby amino acid aminate, Amindivi Islands, amine, amino, aminoacetic acid, amino acid, amino-acid dating, amino acid dehydrogenase, aminoacidemia, amino acid oxidase, amino acids Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for amino acid Peptides provide a cheese with its distinct flavor, based on the configuration of these amino-acid chains. Why We Love Stinky Cheese\|Stacey Slate\|January 14, 2010\|DAILY BEAST British Dictionary definitions for amino acid amino acid noun any of a group of organic compounds containing one or more amino groups, -NH 2, and one or more carboxyl groups, -COOH. The alpha-amino acids RCH(NH 2)COOH (where R is either hydrogen or an organic group) are the component molecules of proteins; some can be synthesized in the body (nonessential amino acids) and others cannot and are thus essential components of the diet (essential amino acids) Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for amino acid amino acid n. Any of various organic acids containing both an amino group and a carboxyl group, especially any of the 20 or more compounds that link together to form proteins. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for amino acid amino acid Any of a large number of compounds found in living cells that contain carbon, oxygen, hydrogen, and nitrogen, and join together to form proteins. Amino acids contain a basic amino group (NH2) and an acidic carboxyl group (COOH), both attached to the same carbon atom. Since the carboxyl group has a proton available for binding with the electrons of another atom, and the amino group has electrons available for binding with a proton from another atom, the amino acid behaves as an acid and a base simultaneously. Twenty of the naturally occurring amino acids are the building blocks of proteins, which they form by being connected to each other in chains. Eight of those twenty, called essential amino acids, cannot be synthesized in the cells of humans and must be consumed as part of the diet. The remaining twelve are nonessential amino acids. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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