hairpin


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

hair·pin

( hār'pin),
1. The structure formed by a polynucleic acid by base-pairing between neighboring complementary sequences of a single strand of either DNA or RNA.
2. The structure seen in a prostaglandin where two segments of the molecule fold back on one another.
Hairpinclick for a larger image
Fig. 187 Hairpin . (a) Hairpin. (b) Hairpin loop.

hairpin

a double-stranded structure found in single-stranded NUCLEIC ACID molecules, due to BASE PAIRING between adjacent complementary sequences. The two sequences are inversely arranged and may be directly adjacent, as in a PALINDROME, or interrupted by a non-complementary sequence. In the former case a double-stranded segment (hairpin) is generated; in the latter a hairpin-loop structure forms.

hairpin

a secondary structure that occurs in single-strand RNA during protein synthesis in which the strand turns back on itself. The structure is the result of base pairing and hydrogen bond formation.
References in periodicals archive ?
The EPO found that the patented DNA-delivered hairpin RNA technology was novel and inventive.
Under pressure, Rea ran wide at the Old Hairpin and Sykes took the lead to see out the win, despite Rea snatching the lap record along the way.
VIEWING: The cars are visible for almost two miles as they approach a fast downhill section before crossing a deep watersplash, a jump, the twisty section in the bowl and then finally a jump and hairpin turn into the stage finish.
A spokesman for Pembrey Racing Circuit said: "A 27-year-old female competitor, who fell from her Yamaha R6 motorcycle at Hatchets Hairpin.
And a slight mistake on the exit of the hairpin saw him give Byrne his big opportunity.
The Hairpin got hold of the actual birth certificate back in January.
A permanent fixture on the calendar since 1999, the Sepang circuit is one of the first F1 venues to have been designed by architect Hermann Tilke and features his trademark long straights, hairpins and fast esses.
Another method for genotyping separated loci is to design a bulge into the snapback hairpin, as demonstrated for exon 23 for variants p.
Recalling her hairpin ordeal she said: "After heating it up for a little while, he stuck it on my bum.
Hamilton regained the advantage after the first-round of pit-stops and, when Perez tried to go around the outside at the hairpin, the Sauber spun off into the gravel and out of the race.
Perez dropped behind Hamilton after running wide while trying to pass Felipe Massa but made a pass on the Briton at the hairpin in a cloud of tyre smoke as he locked up his left-front tyre.
Perez dropped behind Hamilton after running wide while trying to pass Ferrari's Felipe Massa, but made a pass on the Briton at the hairpin in a cloud of tyre smoke as he locked up his left-front tyre.