The word 'helical' is correct and usable in written English.
It is an adjective used to describe something having the shape of a helix - a spiral like a twisted rope or a corkscrew. For example, "The DNA molecule has a helical structure."
Because all of the amino acids, except glycine, are asymmetric L-amino acids, the peptide chain tends to assume an asymmetric helical shape; some of the fibrous proteins consist of elongated helices around a straight screw axis.
The vertical helical structure, which gives the device its name, provides a stability that previous designs lacked.
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Indeed, it was fear that Pauling would trump them that drove the pair on.Related items James Watson: Determined from birthApr 24th 2003 The art of DNA: Back to basesApr 24th 2003 Climbing the helical staircaseMar 27th 2003 DNA: A double twistFeb 27th 2003 Scientific lives: Account paidJun 13th 2002They themselves did no experimental work on DNA's structure.
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His "helical airscrew" (c.
These nucleotides contain four nucleobases (adenine, guanine, cytosine and thymine) that form base-pairs and give the DNA molecule its famous double-helical structure.
RNA molecules are single-stranded copies of the double-helical DNA genes in the cell nucleus.
Dr Watson, co-discoverer with Francis Crick of the double-helical structure of DNA, was responsible for suggesting the human-genome project in the first place.
In truth, Dr Watson, co-discoverer of the double-helical structure of DNA back in the 1950s, had a point.
Correction to this articleIN 1958 Francis Crick, one of the co-discoverers of the double-helical structure of DNA, spelled out what came to be called the "central dogma" of molecular biology.
