aminoacid

Amino acids (/ÉËmiËnoÊ/, /ÉËmaÉªnoÊ/, or /ËÃ¦mÉªnoÊ/) are biologically important organic compounds made from amine (-NH2) and carboxylic acid (-COOH) functional groups, along with a side-chain specific to each amino acid. The key elements of an amino acid are carbon, hydrogen, oxygen, and nitrogen, though other elements are found in the side-chains of certain amino acids. About 500 amino acids are known[1] and can be classified in many ways. Structurally they can be classified according to the functional groups' locations as alpha- (Î±-), beta- (Î²-), gamma- (Î³-) or delta- (Î´-) amino acids; other categories relate to polarity, pH level, and side chain group type (aliphatic, acyclic, aromatic, containing hydroxyl or sulfur, etc.) In the form of proteins, amino acids comprise the second largest component (after water) of human muscles, cells and other tissues.[2] Outside proteins, amino acids perform critical roles in processes such as neurotransmitter transport and biosynthesis.

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ZME Science posts about aminoacid

Origin of life needs some serious rethinking, researchers argue

Wed, Dec 12, 2012

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Scientists trying to pinpoint the origin of life have been looking at it the wrong way, a new study claims. A new perspective Instead of recreating the chemical building blocks that led to the emergence of life 3.7 billion years ago, they argue scientists should use key differences in the way that living creatures store [...]

aminoacid, dna, mathematical model, Mathematics, petri dish, primordial soup

Advanced dinosaurs might rule other planets, some researchers claim

Wed, Apr 11, 2012

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I don’t know if you’re thinking it, but I definitely am: lizardmen! I’m scared of lizardmen just like the next guy, but all my life I’ve lived with the idea that they are just figments of the imagination which sometimes occur in Star Trek episodes or RPG games – but according to Ronald Breslow, Ph.D., [...]

aminoacid, chirality, lizardmen

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