(1) The rate-limiting step for O2, NO, and isonitrile binding to all five proteins is ligand migration up to the initial geminate state, and the rate of this process determines the overall bimolecular association rate constant for these ligands.
(2) Analysis of the effect of photoselection by the linearly polarized excitation pulse indicates that a major contribution to the apparent geminate rebinding in the 50-ns relaxation arises from rotational diffusion of molecules containing unphotolyzed heme-CO complexes.
(3) This is due to the influence of the fluorine substituent(s) on the basicity of the amine function proximal to the fluoromethylene group, this effect being amplified by geminal disubstitution.
(4) Significant subnanosecond geminate recombination is observed in oxyhemoglobin down to 150 K, while below 100 K this geminate recombination disappears.
(5) In addition, the first prevalence statistics for the bilateral occurrence of fusion and gemination in the primary and permanent dentitions are determined.
(6) We discuss geminate recombination measurements of cyanomet hybrid hemoglobins with NO and consider these results in terms of alpha and beta subunit heterogeneity.
(7) The results were analyzed quantitatively in terms of a three-step reaction scheme, MbX in equilibrium B in equilibrium C in equilibrium Mb + X, where Mb is myoglobin, B represents a geminate state in which the ligand is present in the distal pocket but not covalently bound to the iron atom, and C, a state in which the ligand is still embedded in the protein but further away from the heme group.
(8) The picosecond geminate rebinding of molecular oxygen was monitored in a variety of different human, reptilian, and fish hemoglobins.
(9) Comparing the kinetic and thermodynamic process of the O2 geminate reaction among several Mbs, we concluded that the geminate O2 reaction with Mb is governed by the dynamic motion of the protein which is sensitively controlled by the static interaction of the heme moiety with the surroundings.
(10) The geminal nature of the magnitude-COSY detected partners to the resolved C beta H peaks is confirmed by strong NOESY cross-peaks.
(11) Typical geminate virus particles were observed in extracts of plants infected with ORF AC3 mutants indicating that this gene is not essential for coat protein synthesis or virus assembly but possibly acts by modulating virus levels in infected tissues.
(12) However, the rates of geminate recombination of NO and O2 and the affinity of myoglobin for O2 were dependent upon the basicity of residue 45.
(13) The vicinal (vic) isomer was excreted in a 2 times higher amount (16 nmol) than the geminal (gem) isomer (8 nmol).
(14) The fraction geminate signal was least at delays where the maximum proportion of liganded T state tetramer is expected.
(15) Geminate recombination phases were observed at 30 ns and 1 microsecond following photodissociation.
(16) It is suggested that all succedaneous teeth that are joined or fused together by dentin be referred to as fused teeth because of the frequent difficulty in differentiating fusion and gemination in the adult dentition.
(17) The geminal beta-methylene protons for the two cysteines bound to the iron(II) center were clearly identified, as well as the C alpha H and one C beta H for each of the cysteines bound to the iron(III).
(18) Measurement of the geminate process in the infrared CO-stretch bands shows distributed activation enthalpies with different distributions for each band, transitions between two bands that correspond to photolyzed ligands, and kinetic hole burning.
(19) The kinetics of geminate recombination for the diliganded species alpha 2CO beta 2 and alpha 2 beta 2CO of human hemoglobin were studied using flash photolysis.
(20) Flash photolysis kinetics of carbon monoxide hemoglobin show a decrease in the fraction of ligand recombination occurring as geminate when the hemoglobin has fewer ligands bound.
Group
Definition:
(n.) A cluster, crowd, or throng; an assemblage, either of persons or things, collected without any regular form or arrangement; as, a group of men or of trees; a group of isles.
(n.) An assemblage of objects in a certain order or relation, or having some resemblance or common characteristic; as, groups of strata.
(n.) A variously limited assemblage of animals or plants, having some resemblance, or common characteristics in form or structure. The term has different uses, and may be made to include certain species of a genus, or a whole genus, or certain genera, or even several orders.
(n.) A number of eighth, sixteenth, etc., notes joined at the stems; -- sometimes rather indefinitely applied to any ornament made up of a few short notes.
(n.) To form a group of; to arrange or combine in a group or in groups, often with reference to mutual relation and the best effect; to form an assemblage of.
Example Sentences:
(1) A group of interested medical personnel has been identified which has begun to work together.
(2) Once treatment began, no significant changes occurred in Group 1, but both PRA and A2 rose significantly in Groups 2 and 3.
(3) This trend appeared to reverse itself in the low dose animals after 3 hr, whereas in the high dose group, cardiac output continued to decline.
(4) All transplants were performed using standard techniques, the operation for the two groups differing only as described above.
(5) after operation for hip fracture, and merits assessment in other high-risk groups of patients.
(6) Seventeen patients (Group 1) had had no previous surgery, while 13 (Group 2) had had multiple previous operations.
(7) The effects of sessions, individual characteristics, group behavior, sedative medications, and pharmacological anticipation, on simple visual and auditory reaction time were evaluated with a randomized block design.
(8) Urinary ANF immunoreactivity was significantly enhanced by candoxatril in both groups (P less than 0.05 and P less than 0.01 in groups 1 and 2, respectively), with a more pronounced effect evident at the higher dose (P less than 0.01).
(9) The second group only with Haloperidol (same dose).
(10) A change in the pattern of care of children with IDDM, led to a pronounced decrease in hospital use by this patient group.
(11) If the method was taken into routine use in a diagnostic laboratory, the persistence of reverse passive haemagglutination reactions would enable grouping results to be checked for quality control purposes.
(12) We considered the days of the disease and the persistence of symptoms since the admission as peculiar parameters between the two groups.
(13) A group I subset (six animals), for which predominant cultivable microbiota was described, had a mean GI of 2.4.
(14) The half-life of 45Ca in the various calcium fractions of both types of bone was 72 hours in both the control and malnourished groups except the calcium complex portion of the long bone of the control group, which was about 100 hours.
(15) Between 22 HLA-identical siblings and 16 two-haplotype different siblings, a significant difference in concordance of reactions for the B-cell groups was noted.
(16) The cumulative incidence of grade II and III acute GVHD in the 'low dose' cyclosporin group was 42% compared to 51% in the 'standard dose' group (P = 0.60).
(17) The intrauterine mean active pressure (MAP) in the nulliparous group was 1.51 kPa (SD 0.45) in the first stage and 2.71 kPa (SD 0.77) in the second stage.
(18) Biden will meet with representatives from six gun groups on Thursday, including the NRA and the Independent Firearms Owners Association, which are both publicly opposed to stricter gun-control laws.
(19) Another interested party, the University of Miami, had been in talks with the Beckham group over the potential for a shared stadium project.
(20) However, the groups often paused less and responded faster than individual rats working under identical conditions.