from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A pentose sugar, C5H10O5, occurring as a component of riboflavin, nucleotides, and nucleic acids.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A naturally occurring pentose sugar, which is a component of the nucleosides and nucleotides that comprise the nucleic acid biopolymer, RNA. It is also found in riboflavin.
from The Century Dictionary and Cyclopedia
- n. A syrupyl pentose, C5H10O5, formed by reducing ribonic acid with sodium amalgam and very dilute sulphuric acid.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a pentose sugar important as a component of ribonucleic acid
One of the most beneficial mutations, seen repeatedly in separate cultures, was the bacterium’s loss of the ability to make a sugar called ribose, which is a component of RNA.
The energy in your body is stored in packets called ATP as well as phosphocreatine, which are made up of a number of chemicals including a sugar called ribose, adenine which used to be called vitamin B4, and derivatives of B vitamins.
The second part of the first problem involves the production of ribose, one of the constituents of RNA.
But he did in Catalina, and the ribose did not immediately start the usual quick slide into tar when a pinch of boron was added.
Instead it stayed clear, and a very excited Benner believed he had found a way to allow the essential ribose to be created on early Earth while still keeping water in the picture.
This is a significant issue in the origins-of-life world because ribose is the R of RNA, and it has to be stable enough at some point to bond with the other elements.
Benner long knew that the element boron at least temporarily blocked the decomposition of ribose in water, but he had never before thought to throw it into the origin-of-life chemical mix.
Benner had been on Catalina Island, off Los Angeles, with a group of geologists, and he was leading them through some experiments involving the sugar ribose, a mineral with calcium in it, and water.
Another problem to overcome in building a cell is that the individual elements of the genetic material (ribose, a sugar) and of the proteins (amino acids) are “hostile” to each other.
Qian JJ, Duncan BW, Adzick NS, Bhatnagar RS: Regulation of prolyl hydroxylase by ascorbic acid is mediated by polyADP-ribose synthesis.
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