(a.) Inclining or dipping in opposite directions. See Synclinal.
(n.) The crest or line in which strata slope or dip in opposite directions.
Example Sentences:
(1) The Cl'--N1 distance, the chi CN torsion angle and the glycosidic conformation are 1.464 (8) A, -130.0 degrees and -anticlinal for molecule A and 1.506 (8) A, -168.9 degrees and -antiperiplanar for molecule B, respectively.
(2) The PMB foreshadowing the highly curved cell plates in meristemoids I of the mesoperigenous process, as well as in meristemoids I and II of the mesogenous one, are apposed only on one anticlinal wall and therefore do not encircle the nucleus or traverse the cell.
(3) In wild-type leaves the first sign of differentiation of the ligular region is a series of specialized anticlinal divisions in the adaxial epidermis.
(4) By using the technique of time-lapse cinemicrography, we have been able for the first time to directly examine the division planes of 8-cell blastomeres during fourth cleavage, and find that there are three, rather than two, major division plane orientations; anticlinal (perpendicular to the outer surface of the blastomere), periclinal (parallel to the outer surface of the blastomere), and oblique (at an angle between the other two).
(5) This stage ends when a row of cells in the preligule region divides more rapidly in both transverse and longitudinal anticlinal planes.
(6) The liguleless-1 homozygote shows no alteration in this overall pattern of growth, but does show distinct alteration in the anticlinal division pattern in the preligule region.
(7) In agreement with previous NMR studies and with classical potential calculations, the STO-3G* results indicate that both the gauche (phi = 53.1 degrees) and anticlinal (phi = 141.9 degrees) conformations are thermally accessible.
(8) The anticlinal divisions preceding ligule formation are altered in the mutant; therefore, the gene acts early in development, before the periclinal divisions, and possibly during basipetal vascularization.
(9) Moreover, it was found that the anticlinal wall of the epidermal cells is not bead--thickened, but cuticular peg formed by cuticle.
(10) In the crystal, the molecule adopts a conformation in which one of the two hydroxymethyl fragments is synplanar to S and the other is anticlinal to S. Although the two fragments are otherwise equivalent, the C-C-O bond angles in the two hydroxymethyl fragments are significantly different from each other [106.7 (3) and 110.7 (3) degrees].
(11) A new method is used to assess orientation of anticlinal division planes during development and to determine a division index based on recent epidermal cross-wall deposition.
(12) Evidence that the optimum dihedral +N-C-C-O angle in the transition state for acetylcholinesterase hydrolysis of acetylcholine analogs is positive and anticlinal is given.
(13) Subsequent anticlinal and periclinal divisions of the cells leads to enlargement of the sporangium and the formation of multiple locules.
Synclinal
Definition:
(a.) Inclined downward from opposite directions, so as to meet in a common point or line.
(a.) Formed by strata dipping toward a common line or plane; as, a synclinal trough or valley; a synclinal fold; -- opposed to anticlinal.
(n.) A synclinal fold.
Example Sentences:
(1) The two structures are mirror images and the central C--C--N--C--C chain adopts the anti-periplanar-synclinal conformation.
(2) In both monomeric and aggregated states the phosphocholine function of 1 adopts the synclinal conformation (alpha 5 torsional angle), in analogy with phosphatidylcholine (Hauser, H., Guyer, W., Pascher, I., Skrabal, P. and Sundell, S. (1980) Biochemistry 19, 366-373).
(3) The requirements of compounds in the cyclamate series for sweet taste stimulation are: synclinal conformation between NH and SO in the aminosulphonate group, length less than 0.7 nm of the group on the nitrogen, and hydrophobic character of the latter group.
(4) The alpha-methyl group is fully extended (antiplanar) whereas the amino group is orientated back towards the ring (synclinal).
(5) The compound is a potential antiarrhythmic and the molecule has the typical synclinal conformation for the -NH-CH-CH2-OH fragment of the side chain [tau CC = 56.5 (8) degrees] exhibited by these compounds.
(6) A comparison with the native crystal structure, where SO-4(2) is bound, revealed five changes: (a) a 0.10-nm shift of the anion-binding site; (b) a further closing of the flexible loop of the enzyme; (c) a 'swinging in' of the side chain of the catalytic Glu, that is chi 1 changes from (+) to (-) synclinal; (d) an altered water structure; (e) a disappearance of the conformational heterogeneity at the C-terminus of strand beta 7.
(7) One of these (rotamer A) is characterized by torsion angles theta 3 = antiperiplanar, theta 4 = +synclinal, and the other (rotamer B) by theta 3 = +synclinal, theta 4 = -synclinal.
(8) In both rotamers A and B the ester oxygens on the glycerol carbon atoms C(2) and C(3) are synclinal, and hence both types of rotamers readily allow the parallel alignment of the two hydrocarbon chains.
(9) The two fatty acid substituted glycerol oxygens have mutually a - synclinal rather than the more common + synclinal conformation.
(10) The X-ray crystal structure conformation for compound 22 (2-[2-(1H-indol-3-yl)ethyl]-3-]-3-(1-methylethoxy) phenyl]-4(3H)-quinazolinone, IC50 = 0.026 microM) is extended with the two heteroaromatic rings adopting an antiperiplanar arrangement around the central sigma bond of the ethane linker, whereas the solid-state conformation for a less active analogue 19 (2-[2-(1H-indol-3-yl)-1-methylethyl]-3-[3-(1- methylethoxy)phenyl]-4(3H)-quinazolinone, IC50 = 9.1 microM) is folded with the two heteroaromatic systems adopting a synclinal orientation.
(11) Whereas both solid-state (+-)-orphenadrine hydrochloride and diphenhydramine hydrochloride [(CH3)2NCH2CH2OCH(Ph)2.HCl] have synclinal N-C-C-O and antiperiplanar NC-C-O-CAr2 torsion angles, the former has a helical arrangement for Ar2CH, as expected, and the phenyl rings in the latter are disposed in a nonhelical, "open-book" arrangement.
(12) The conformation about the C1-C2 bond (theta 1 angle) of the sphingosine backbone is predominantly -synclinal, analogously to the conformation of the crystalline galactosyl cerebroside (Pascher, I. and Sundell, S. (1977) Chem.