What's the difference between pecker and pucker?

Pecker


Definition:

  • (n.) One who, or that which, pecks; specif., a bird that pecks holes in trees; a woodpecker.
  • (n.) An instrument for pecking; a pick.

Example Sentences:

  • (1) We have recently reported that glucagon activated the L-type Ca2+ channel current in frog ventricular myocytes and showed that this was linked to the inhibition of a membrane-bound low-Km cAMP phosphodiesterase (PDE) (Méry, P. F., Brechler, V., Pavoine, C., Pecker, F., and Fischmeister, R. (1990) Nature 345, 158-161).
  • (2) I’ve always called him Cold Pecker and I always will.” I mishear her.
  • (3) These properties of Ca2+ transport by vesicles reconstituted from liver plasma membranes suggest that this ATP-dependent Ca2+ transport component is different from the high affinity (Ca2+-Mg2+)-ATPase found in the same membrane preparation (Lotersztajn, S., Hanoune, J. and Pecker, F. (1981) J. Biol.
  • (4) A clinical classification of this traumatic pathology according to the epidural hematoma classification of Pecker et al is proposed.
  • (5) They mostly boil down to inter-male rivalries and hierarchies of masculinity – the pecker pecking order, if you will: the bigger the mister, the bigger the man.
  • (6) Friday on Morning Joe, Scarborough claimed several top White House staffers had warned him that an article in the National Enquirer, a tabloid controlled by Trump ally David Pecker, would unmask the couple’s relationship.
  • (7) 256, 11209-11215; Lotersztajn, S. and Pecker, F. (1982) J. Biol.
  • (8) magazine is a very important strategic acquisition for AMI, as it increases our market share in newsstand unit sales from 30% to 36%," said David Pecker, AMI chairman, president and chief executive.
  • (9) We have recently shown that nanomolar concentrations of glucagon-(19-29), which can derive from native glucagon by proteolytic cleavage of the dibasic doublet Arg17-Arg18, inhibit the Ca2+ pump in liver plasma membrane vesicles independently of adenylyl cyclase activation (Mallat, A., Pavoine, C., Dufour, M., Lotersztajn, S., Bataille, D., and Pecker, F. (1987) Nature 325, 620-622).
  • (10) The morphology of the follicular epithelium during the course of oogenesis in poultry (duck goose, hen, turkey) and at the first stages of oocyte growth in some wild birds (finch, totmit, wood-pecker, pigeon) was studied.
  • (11) The purified (Ca2+-Mg2+)-ATPase from rat liver plasma membranes (Lotersztajn, S., Hanoune, J., and Pecker, F. (1981) J. Biol.

Pucker


Definition:

  • (v. t. & i.) To gather into small folds or wrinkles; to contract into ridges and furrows; to corrugate; -- often with up; as, to pucker up the mouth.
  • (n.) A fold; a wrinkle; a collection of folds.
  • (n.) A state of perplexity or anxiety; confusion; bother; agitation.

Example Sentences:

  • (1) As in the protein sample, a tendency for the cis-proline residues to have the DOWN pucker was observed, but the effect was less pronounced.
  • (2) The ultrastructural findings of the macular pucker removed by vitreoretinal surgery are demonstrated.
  • (3) Sugar puckers and proton distances are very sensitive criteria to monitor molecular dynamics.
  • (4) Intranucleotide proton-proton distances combined with the knowledge of sugar puckers have been used to fix the glycosidic bond torsion angle (chi).
  • (5) High proliferative activities were found in 4 of 5 PVR membranes, in 9 of 14 PDR membranes, in 6 of 11 recurrent membranes after intraocular silicone oil tamponade, and in 2 of 6 macular pucker membranes.
  • (6) No "flips" to the opposite puckering for this ring were found in the simulations starting from the global minimum, although such a transition was observed for a trajectory initiated with one of the higher local minimum energy conformations.
  • (7) Thus, flexibility in psi as well as in omega and omega, and in the sugar pucker is indicated.
  • (8) These facts suggest that astrocytes play an important role in preretinal membrane formation in macular pucker.
  • (9) The free duplex adopts a regular right-handed B-type conformation in which all glycosidic bond angles are anti and all sugar puckers lie in the C2'-endo range.
  • (10) All cases occurred in eyes with existing retinal holes or tears, including eight cases of macular pucker after previous retinal detachment.
  • (11) The conformations of the terminal residues of helix I, which corresponds to bases (-1)-11 and 108-120 of native 5S RNA, are less well-determined, and their sugar puckers are intermediate between C2' and C3'-endo, on average.
  • (12) Different ester substituents affect 1,4-dihydropyridine ring puckering to a small extent in most cases.
  • (13) Scalar couplings from correlated experiments and interproton distances from NOESY experiments at short mixing times have been used to determine glycosidic angles, sugar puckers, and other conformational features.
  • (14) There appeared to be a possibility that this muscular thickening might give rise to the rectosigmoidal mucosal puckering often seen through a sigmoidoscope.
  • (15) Intranucleotide NOEs from the sugar protons H1', H2', and H3' to the base protons were used to determine the conformation of each nucleotide (puckers and glycosidic torsion angles).
  • (16) The most flexible conformational angles in the structure are the glycosidic angle and the sugar pucker.
  • (17) Of these, 89% of the cis-proline residues exhibit the DOWN pucker, while the trans-proline residues, on average, are about evenly distributed between the two forms.
  • (18) The folding of the polynucleotide chain is accomplished either solely by rotations around the P-O bonds or in concert with rotations around the nucleotide C4'-C5' bond with or without changes in the sugar ring pucker.
  • (19) Postoperative proliferative vitreoretinopathy occurred in six eyes (10%) and macular pucker in two (3%).
  • (20) The glycosidic torsional angle, chiCN = -28.4 degrees, is in the anti region; the sugar pucker is C(2')exo-C(3')endo in a nearly pure 32H twist; and the conformation of C(4')-C(5') is gauche-gauche.

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