What's the difference between stretch and unfold?

Stretch


Definition:

  • (v. t.) To reach out; to extend; to put forth.
  • (v. t.) To draw out to the full length; to cause to extend in a straight line; as, to stretch a cord or rope.
  • (v. t.) To cause to extend in breadth; to spread; to expand; as, to stretch cloth; to stretch the wings.
  • (v. t.) To make tense; to tighten; to distend forcibly.
  • (v. t.) To draw or pull out to greater length; to strain; as, to stretch a tendon or muscle.
  • (v. t.) To exaggerate; to extend too far; as, to stretch the truth; to stretch one's credit.
  • (v. i.) To be extended; to be drawn out in length or in breadth, or both; to spread; to reach; as, the iron road stretches across the continent; the lake stretches over fifty square miles.
  • (v. i.) To extend or spread one's self, or one's limbs; as, the lazy man yawns and stretches.
  • (v. i.) To be extended, or to bear extension, without breaking, as elastic or ductile substances.
  • (v. i.) To strain the truth; to exaggerate; as, a man apt to stretch in his report of facts.
  • (v. i.) To sail by the wind under press of canvas; as, the ship stretched to the eastward.
  • (n.) Act of stretching, or state of being stretched; reach; effort; struggle; strain; as, a stretch of the limbs; a stretch of the imagination.
  • (n.) A continuous line or surface; a continuous space of time; as, grassy stretches of land.
  • (n.) The extent to which anything may be stretched.
  • (n.) The reach or extent of a vessel's progress on one tack; a tack or board.
  • (n.) Course; direction; as, the stretch of seams of coal.

Example Sentences:

  • (1) Tendon (T) and Hoffmann (H) reflexes were analyzed during static stretching (SS).
  • (2) An AT-rich stretch is centered at position -31 with respect to the transcription initiation site, and a potential CCAAT box is centered at position -138.
  • (3) Mechanosensitive ion channels may play a key role in transducing vascular smooth muscle (VSM) stretch into active force development.
  • (4) Endothelial release of the arachidonate derivative PGI2 may be increased in response to cyclic lung stretching.
  • (5) Differences in scar depression also supported the idea of more stretching in the Dexon group.
  • (6) The maximum force level reached during the stretch was affected very little.
  • (7) Cerebral angiogram displayed a contralateral shift and an unrolling of the anterior cerebral artery, a lateral stretch of middle cerebral artery, a downward stretch of anterior choroidal artery and a tumor stain fed by the Heubner artery.
  • (8) The results of conventional sciatic nerve stretching tests are usually evaluated regardless of patient age, gender or movements of the hip joint and spine.
  • (9) Phycomyces sporangiophores respond to four distinct physical stimuli: gravity, light, stretch, and an avoidance stimulus.
  • (10) Increase in activity of pulmonary stretch receptors causes inhibition of inspiration and bronchodilation.
  • (11) The stiffness of the fibre first rose abruptly in response to stretch and then started to decrease linearly while the stretch went on; after the completion of stretch the stiffness decreased towards a steady value which was equal to that during the isometric tetanus at the same sarcomere length, indicating that the enhancement of isometric force is associated with decreased stiffness.
  • (12) During ischaemia M1 stretch responses showed a more rapid and pronounced decline than did M2 responses and were abolished before voluntary power was appreciably affected.
  • (13) The stretch reflex in man has a direct role in compensating for small disturbances during motor tasks.
  • (14) I personally felt grateful that British TV set itself apart from its international rivals in this way, not afraid to challenge, to stretch the mind and imagination.
  • (15) Cubitus valgus or instability due to a pseudarthrosis of the lateral epicondyle or to ligamentous injury may stretch the nerve.
  • (16) The media's image of a "gamer" might still be of a man in his teens or 20s sitting in front of Call of Duty for six-hour stretches, but that stereotype is now more inaccurate than ever.
  • (17) The presence of a form of stretch reflex, previously described in the arm by other authors, has been confirmed in the gastrocnemius muscle of the human leg.
  • (18) The influence of stretch and radial compression on the width of mechanically skinned fibers from the semitendinosus muscle of the frog (R. pipiens) was examined in relaxing solutions with high-power light microscopy.
  • (19) The bent DNA has been localized to a 40-55 base pair (bp) segment and contains six (A)3-5 stretches (that is, six poly(A) stretches, three to five nucleotides in length) phased approximately every 10.5 bp.
  • (20) This figure suggests that, unless there are substantial stretches of free DNA, the polyoma nucleoprotein complex contains about 26 nucleosomes.

Unfold


Definition:

  • (v. t.) To open the folds of; to expand; to spread out; as, to unfold a tablecloth.
  • (v. t.) To open, as anything covered or close; to lay open to view or contemplation; to bring out in all the details, or by successive development; to display; to disclose; to reveal; to elucidate; to explain; as, to unfold one's designs; to unfold the principles of a science.
  • (v. t.) To release from a fold or pen; as, to unfold sheep.
  • (v. i.) To open; to expand; to become disclosed or developed.

Example Sentences:

  • (1) The estimated DNA compaction ratio (approximately 3-fold) is consistent with a significant degree of nucleosome unfolding in the hyperstimulated BR genes.
  • (2) This formalism allows resolution of the intrinsic protein folding-unfolding parameters (enthalpy, entropy, and heat capacity changes) as well as the ligand interaction parameters (binding stoichiometry, enthalpy, entropy, and heat capacity changes).
  • (3) The kinetics of inactivation of the Mg(2+)-containing enzyme in 8 M-urea at higher temperatures suggest a partially unfolded Mg-A-B* dimer intermediate with 50% activity, followed by irreversible inactivation coincident with the appearance of unfolded monomer.
  • (4) When RNAase is partially unfolded Au(III) causes oxidation of methionines to the sulphoxide, and leads to almost complete unfolding (at molar equivalent ratios).
  • (5) In the context of a simplified diamond lattice model of a six-member, Greek key beta-barrel protein that is closely related in topology to plastocyanin, the nature of the folding and unfolding pathways have been investigated using dynamic Monte Carlo techniques.
  • (6) The efficiency of energy transfer between probes attached to residues 1 and 15 in the reduced state is higher than that found for the same pair of sites in the native state or reduced unfolded (in 6 M Gdn.HCl) state.
  • (7) Coombs's theory of data (1952, 1964) and his unfolding theory of preferential choice (1950, 1964) provided the conceptualization of metacognition in this psychophysical task context.
  • (8) Yet what has been unfolding in the past 15 months or so should make even the most ardent pro-European think about an orderly mechanism for making member states exit: the euro crisis and, less obviously, Hungary's backsliding from liberal democracy to a soft form of authoritarianism, or what an American paper recently called " Lukashenko lite ".
  • (9) Circular dichroism studies show that the conformation of each subunit is unusually resistant to change in 6 M guanidine HC1 at 25 degrees C. This suggests that exposure of the epitope by dissociation requires minimal or no unfolding of subunits.
  • (10) The data relative to the guanidine-induced unfolding show a sigmoidal increase of the distribution width, which is due to the transition of the protein structure from the native to the random-coiled state.
  • (11) The data suggest that the assessment of early trauma needs to employ a variety of measures, especially those which are related to the unfolding skills appropriate for the particular age group studied.
  • (12) In contrast to the biphasic unfolding of the wild-type nuclease, the unfolding of the mutant is represented by a single-phase reaction, indicating that the biphasic unfolding for the wild-type protein is caused by cis-trans isomerization about the prolyl peptide bond in the native state.
  • (13) 4) The unfolded map diagnosis with apical display obtained from long-axis tomogram was useful to diagnose left anterior descending coronary (LAD) lesion, which improve not only the sensitivity of LAD but also specificity of right coronary artery single vessel disease.
  • (14) The replacement of Arg171 by Tyr stabilizes the enzyme against thermal inactivation and unfolding.
  • (15) These findings and the dense structure of the scleral spur suggest that in monkey eyes, and at least in some human eyes, contraction of the ciliary muscle causes unfolding of the trabecular meshwork, not so much through the movement of the scleral spur as by movement of the interconnecting trabecular beams and fibers.
  • (16) The principal parameter under scrutiny was the denaturing or unfolding effects caused by the interaction of the protein with the adsorptive surfaces in each assay system.
  • (17) For here we see the depravity to which man can sink, the barbarity that unfolds when we begin to see our fellow human beings as somehow less than us, less worthy of dignity and life; we see how evil can, for a moment in time, triumph when good people do nothing."
  • (18) In contrast, import of the surface-bound unfolded precursor requires ATP, but no potential; it is accompanied by a refolding inside the mitochondria.
  • (19) These experiments show that yeast cells can activate a transcription factor that stimulates expression of a nuclear gene in response to the accumulation of unfolded proteins in another cellular compartment.
  • (20) In the present study, the reversibility of the unfolding-refolding process induced by guanidine hydrochloride was investigated for the intact protein and the isolated domains.