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Secondary cloverleaf structure of tRNA Phe from yeast.. The cloverleaf model of tRNA is a model that depicts the molecular structure of tRNA. [1] The model revealed that the chain of tRNA consists of two ends—sometimes called "business ends"—and three arms.
The clover's outer leaf structure varies in physical orientation. The record for most leaflets is 63, set on August 2, 2023, by Yoshiharu Watanabe in Japan. [ 14 ] The previous record holder, Shigeo Obara, had discovered an 18-leaf clover in 2002, [ 15 ] a 21-leaf clover in 2008 [ 16 ] and a 56-leaf clover in 2009, [ 17 ] also in Japan.
The cloverleaf structure becomes the 3D L-shaped structure through coaxial stacking of the helices, which is a common RNA tertiary structure motif. The lengths of each arm, as well as the loop 'diameter', in a tRNA molecule vary from species to species. [6] [7] The tRNA structure consists of the following:
A representation of the chemical structure of a transfer RNA molecule The IEC 60320 C5 , and C6 electrical power connectors, sometimes colloquially called cloverleaf connections Cloverleaf quasar , a rare example of a quadruply-lensed quasar
The first cloverleaf interchange patented in the US was by Arthur Hale, a civil engineer in Maryland, on February 29, 1916. [3] [4]A modified cloverleaf, with the adjacent ramps joined into a single two-way road, was planned in 1927 for the interchange between Lake Shore Drive and Irving Park Road in Chicago, Illinois, but a diamond interchange was built instead.
4-leaf white clover (Trifolium repens L.)The four-leaf clover is a rare variation of the common three-leaf clover that has four leaflets instead of three. According to traditional sayings, such clovers bring good luck, [1] a belief that dates back to at least the 17th century.
What we do know is that the four-leaf clover has been a symbol of luck for centuries. Just to name a few examples, it's mentioned in a book from the 1600s, it was carried as soldier's good-luck ...
Lespedeza virginica, known as slender bush clover or slender lespedeza, is a species of flowering plant native to much of the United States, as well as Ontario, Canada, [3] and Nuevo León, Mexico. [ 4 ] : 8–9 It is a member of the bean family, Fabaceae .