A Box


Also found in: Idioms.

A Box

A highly conserved (i.e., the DNA nucleotide sequence is similar among many eukaryotic species) region located between base pairs +10 and +20 "upstream" on the tRNA gene, which have the dual role of encoding functional tRNA and promoting tRNA transcription, and acting as a site of receptive protein binding.
References in classic literature ?
"Do they imagine that, because they have been managers of the Opera, we are going to let them have a box for an indefinite period?"
"The stimulus (object) to which the child often responds, a box, e.g.
That evening the Rostovs went to the Opera, for which Marya Dmitrievna had taken a box.
It would be difficult to suppose that there ever was a box which was opened and shut so many times within four-and-twenty hours, as that which contained his wardrobe and necessaries; and certainly there never was one which to two small eyes presented such a mine of clothing, as this mighty chest with its three shirts and proportionate allowance of stockings and pocket-handkerchiefs, disclosed to the astonished vision of little Jacob.
"Surely," said Albert, as the door of a box on the first circle opened, "that must be the Countess G
While he was inwardly praying (he always prayed when he was much frightened)-- "Oh, save me this once, and I'll never get into danger again!"--he was thrusting his hand into his pocket in search of a box of yellow lozenges, which he had brought with him from Brigford among other delicacies of the same portable kind, as a means of conciliating proud beauty, and more particularly the beauty of Miss Sarah Lunn.