(v. t.) To remove a band from; to set free from shackles or fastenings; to unite; to unfasten; to loose; as, unbind your fillets; to unbind a prisoner's arms; to unbind a load.
Example Sentences:
(1) Thus, although the fast sodium inactivation process is not required for tonic and use-dependent block of INa by disopyramide, it contributes to the fast phase of block development and unbinding from use-dependent block.
(2) Two calcium antagonistic drugs, nifedipine and mesudipine, were investigated and as a result averaged rate constants of binding and unbinding were evaluated.
(3) Physical theories have been developed to describe many aspects of their conformational behaviour, such as the preferred shapes and shape transformations of closed vesicles, and the shape fluctuations, random-surface configurations, and adhesion and unbinding of interacting membranes.
(4) Assuming a reversible one-to-one binding reaction, the time course of DHO binding and unbinding was analysed under a variety of conditions.
(5) Sanguinarine may produce a K+-like effect upon the Na pump with consequent unbinding of ouabain.
(6) The rate constants for binding and unbinding of ATP were estimated from the dependence of the mean open time on [ATP] and from the Ki.
(7) The rate for unbinding during depolarization was independent of pHo.
(8) We suggest that these conformational changes arise from the unbinding to DNA of certain basic tails of histone(s), and that a competition for DNA binding locations exists upon the reassociation.
(9) These findings suggest than AN-132 has use dependent inhibitory action on the fast sodium channel by binding to the channel mainly during its activated state and that the unbinding rate of the drug during diastole is very slow.
(10) Because in most cases these fit a single exponential with a mean open duration like that of modified channels, we conclude that voltage-dependent toxin unbinding produced a mixed population of unmodified and modified openings.
(11) The extent of the contribution of the process of agonist binding and unbinding to adenylate cyclase activation has not been demonstrated or quantified.
(12) It is interesting that encainide and flecainide unbind slowly (15-20 seconds), whereas lidocaine and moricizine unbind rapidly (0.2-1.3 seconds).
(13) Therefore, sodium channel states regulate the binding and unbinding behaviour of antiarrhythmic drugs.
(14) Such [Ca2+]i-transients in muscle are actually subcellular spatio-temporal events that are determined dynamically by i) diffusional fluxes of Ca2+, ii) by the binding or unbinding of Ca2+ to ligands such as troponin c and calmodulin, and iii) by the various cellular processes, such as release of Ca2+ from sarcoplasmic reticulum, that produce fluxes of Ca2+ across the membranes bounding organelles or the cell.
(15) According to the model, RAC109-I and RAC109-II have significantly different unbinding rate constants for channels when they exist predominantly in rested, activated, or inactivated states, as well as significantly different binding rate constants when channels are activated.
(16) We conclude that binding and unbinding of one molecule of ATP determine the gating of ATP-sensitive K+ channel.
(17) The dissociation rate constant of DHO unbinding remained unchanged (approximately 0.06 s-1).
(18) Estimates of binding and unbinding rate constants for the sodium channel during the action potential plateau and after repolarization were of the same order as previous results obtained using microelectrode methods in vitro.
(19) Increasing the concentration of drug increased the rate of binding but had little or no effect on unbinding, as expected for a simple bimolecular reaction.
(20) Binding and unbinding of MK-801 seems to be possible only if the N-Me-D-Asp-operated channel is in the transmitter-activated state: MK-801 was effective only when applied simultaneously with N-Me-D-Asp, and recovery from MK-801 blockade was speeded by continuous exposure to N-Me-D-Asp [time constant (tau) approximately equal to 90 min at -70 to -80 mV].
Unwind
Definition:
(v. t.) To wind off; to loose or separate, as what or convolved; to untwist; to untwine; as, to unwind thread; to unwind a ball of yarn.
(v. t.) To disentangle.
(v. i.) To be or become unwound; to be capable of being unwound or untwisted.
Example Sentences:
(1) Unlike cisplatin, bis(platinum) complex binding does not unwind supercoiled DNA.
(2) Of the 47 compounds that were positive or equivocal in the alkaline unwinding assay, only carbon tetrachloride and prednisolone were negative in the mouse lymphoma assay, while 12 of the 19 compounds that were negative in the alkaline unwinding assay were positive in the mouse lymphoma assay.
(3) As suggested from the high level of sequence similarity of these viral proteins with the recently described superfamilies of helicase-like proteins (3-5), the NTBM-containing cylindrical inclusion (CI) protein from plum pox virus (PPV), which belongs to the potyvirus group of positive strand RNA viruses, is shown to be able to unwind RNA duplexes.
(4) This limited unwinding of heterologous duplex DNA, termed heterologous unwinding, was detected within 30 seconds and reached a steady state within a few minutes.
(5) Comparison of the superhelix densities obtained by both methods permits a calculation of an unwinding angle for ethidium.
(6) The exposure of the cells from mussel haemolymph and from mouse L1210 to a genotoxic compound such as dimethylsulfate results in DNA damage and consequently in a reduction of the unwinding time.
(7) As for unwinding, the rituals of it give a satisfying end to the shape of my day.
(8) Chromosome replication appears to initiate in E. coli when the dnaA boxes in oriC become filled with DnaA protein, which could simultaneously mediate both the unwinding of the origin for the start of polymerization and the attachment of oriC to the cell envelope (Bramhill and Kornberg, 1988; Løbner-Olesen et al., 1989; Pierucci et al., 1989).
(9) The protein fraction containing the 93 000 dalton protein had considerable unwinding activity, depressing the melting temperature of poly(dA-dT) by 39 degrees C. The protein fraction containing the bulk of the 35 000 dalton protein did not have unwinding activity.
(10) The required cellular protein may be a eukaryotic single-stranded-DNA-binding protein (SSB), since unwinding of the template is also observed when Escherichia coli SSB is substituted for the HeLa protein fraction.
(11) Evidence is presented that the first step in initiation of SV40 DNA replication involves the specific binding of T antigen to the origin, followed by the local unwinding of the two strands of the template.
(12) Complex formation leads to very little, if any, unwinding of the duplex.
(13) It is suggested that the gene D product may function in replicative form DNA unwinding to expose the template for transcription.
(14) Topotecan (SK&F 104864) is a novel antitumor agent whose mechanism of action is inhibition of the DNA unwinding protein topoisomerase I.
(15) We used an RNA unwinding assay to compare the activities of these factors from the different species.
(16) The extension and unwinding of the DNA helix brought about by the intercalating chromophore of the dye molecules are not requirements for the entrapment process.
(17) Second, mutant T antigens with impaired ATPase function also showed a reduced DNA unwinding activity.
(18) Analysts at UBS said: “After Friday’s ... market plunge, many turned to the authorities for support measures as concerns rose that the rapid unwinding of margin trades was fuelling the sell-off.
(19) It is proposed that the DNA-unwinding activity causes the efficient recombination, DNA repair, and SOS induction (after application of nalidixic acid) in recD mutants.
(20) But within minutes of the five-year-old video of Obama being released by the Daily Caller website on Tuesday night , the "exclusive" began to unwind amid criticism that much of it had been reported at the time and the content was anything but explosive.