(n.) The low murmuring sound made by a cat; pur. See Pur.
Example Sentences:
(1) Expression of glyA, encoding serine hydroxymethyltransferase activity, was elevated in a purR mutant compared with a wild-type strain.
(2) A bulldozer on rail wheels purrs up on the other line and begins pawing at the stones.
(3) At the place where adorable meets obnoxious and the purr becomes a shriek, Leslie Mann is waiting to unload a howitzer of funny in your face.
(4) Nitrogen control was found to be mediated by the glnLG gene products, and purine repression required a functional purR gene product.
(5) Though I could have sworn that you did actually purr,” Dave recalled.
(6) AMP but not GMP is needed for binding, and purR mutants are deficient in the binding substance.
(7) The PurR protein bound specifically to a DNA fragment carrying the glyA control region, as determined by gel retardation.
(8) Cross pathway regulation of pyrC by PurR may provide one mechanism to coordinate synthesis of purine and pyrimidine nucleotides.
(9) "Oh, the lords absolutely love Justin," purrs one senior peer.
(10) Both operator constitutive and repressor type (purR) mutations have been identified.
(11) The purR product functions in the common control of several genetically distinct enzymes that participate before the formation of IMP.
(12) The regulation of the guanine operon is regulated by some other mechanism independent of purR.
(13) A highly conserved sequence in the promoter regions of these two genes is similar to the pur operator, which is the binding site for the purine repressor (PurR).
(14) Gene purB is regulated threefold by the purine pool and purR.
(15) The purEK operon is regulated by the purR gene product, and a purR regulatory-protein-binding site related to the sequences found in other pur loci was identified in the purEK operon control region.
(16) In the film, there is a killingly funny vignette in which Joshua McGuire’s Ruskin, who cannot pronounce his Rs, purrs with self-satisfaction at his own ideas – the critic who got the cream.
(17) Analysis of a purR-lacZ transcriptional fusion indicated that purR expression is autoregulated.
(18) Mutations that changed the binding sequence toward the consensus sequence had no significant effect on either PurR binding or purine-mediated repression.
(19) Site-directed mutagenesis was used to change the PurR binding site in the control region of a glyA-lac gene fusion.
(20) Two independent purR mutations were isolated which abolished repression of purF and purF-lacZ.
Whirr
Definition:
Example Sentences:
(1) The machinery - the spinning gazebo, the train, the paddle-powered airship - whirrs along at the delicate yet exhilarating pace of clockwork.
(2) The mind whirrs away, and soon enough the demystification begins.
(3) The peculiar percussion in the song's middle-eight – helicopter blade whirrs, and a distant shouting army – sound especially fierce against Michael Stipe's distant, spoken-word testimony.
(4) A policewoman hops to the side, to avoid blocking our shot, and there's a chorus of clicks, whirrs and focus beeps.
(5) Then West Ham took over, their running, passing and imagination making the visitors look like mere bouncers amid a whirr of party people.
(6) Once the wheels began to whirr on Manchester United’s move for Radamel Falcao, with Welbeck told he could leave Old Trafford, the route south became a serious option.
(7) With that news still forthcoming, the rumour mill continues to whirr, particularly after Abrams confirmed that he'd had meetings with Jesse Plemons, the American actor known for roles in TV dramas Breaking Bad and Friday Night Lights.
(8) Part of the problem, I suspect, is that few of us doubt the behavioural or environmental threats of technology; our endless distractibility, the constant beeps and whirrs and notifications of modern life.
(9) Wembley itself was ringed with extra security for the occasion from the whirr of the helicopters parked against the clouds hours before kick-off, to the presence on the usually carefree Wembley Way of knots of armed policemen in bulky protective vests, automatic weapons strapped to their chests.
(10) "The population of Mogadishu is regaining confidence," he says as the air conditioner whirrs, dripping water on to sandbags outside his prefab office.
(11) But then, with a spiral, pulsing flutter, it grew to a hissing whirr, landing with ferocious blasts, with tremendous thumps and then their echoes, followed by the whine of fragments which cut into the trees, driving white scars in their trunks and filling the air with torn shreds of foliage.
(12) In a small-space game the Welshman was a whirr of pace and dribbling as the ball stuck to that famous left boot before up went his arms in mock-jubilation to tease the team-mates who could not dispossess him.
(13) Koeman was irritable about that; the time-wasting, which he felt the officials could have done more to stamp out; the disallowed goal; the result and the whirr of transfer speculation which tracked both Mané and Victor Wanyama into the game.