FACTOID # 14: North Carolina has a larger Native American population than North Dakota, South Dakota and Montana combined.
 
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Encyclopedia > Threose

Image:D-threose_Fischer.png

Fischer projection of D-threose

D-Threose is a tetrose carbohydrate with the chemical formula C4H8O4. It has one aldehyde group and so is part of the aldose family.


  Results from FactBites:
 
BioEd Online: Meteorite molecules spin sugars (559 words)
Pizarello mixed the Murchison's proportions of isovaline with two carbon-based chemicals thought to have been abundant on the early Earth, glycoaldehyde and formaldehyde.
The reaction produced threose, a simple sugar common in living things.
Some researchers think it would have been easier for life to start with TNA as the basis of its genetic code, because threose is a simpler sugar than the equivalent found in DNA.
-Graduate Studies in Chemistry and Biochemistry, Chemistry, Biochemistry (367 words)
By determining the three-dimensional structure of these proteins, we will begin to examine the extent to which nature samples the total structural diversity available in protein sequence space.
In Vitro Evolution of TNA Aptamers & Enzymes: Threose nucleic acid (TNA) is a four-carbon sugar analogue of RNA that exhibits complementary Watson-Crick base pairing with DNA, RNA, and other TNA oligonucleotides.
This unusual property together with the chemical simplicity of threose, suggest that TNA might be a progenitor candidate of RNA.
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