(1) The crystallographic parameters of four different unit cells, all of which are based on hexagonal packing arrangements, indicate that the fundamental unit of the complex is composed of six gene 5 protein dimers.
(2) The molecular structure of the hexagonal crystal form of porcine pepsin (EC 3.4.23.1), an aspartic proteinase from the gastric mucosa, has been determined by molecular replacement using the fungal enzyme, penicillopepsin (EC 3.4.23.6), as the search model.
(3) The "hexagonal ribbon" model proposes that hexagonal profiles are true cross-sections of elongated hexagonal ribbons.
(4) Crystal structure analysis and refinement at 2.0 A resolution of a rhombohedral crystal form of human annexin V at high calcium concentration revealed a domain motion compared to the previously analysed hexagonal crystal form.
(5) Abnormalities included absence of a hexagonal pattern, incomplete portal tracts with dilated veins only, lack of bile ducts and canaliculi, and apparent failure of bile formation and glycogen deposition.
(6) Using a hexagonal electrode array and switching times of 75 min at 45 V for 14 days, nine bands could be resolved.
(7) The PENN-PET scanner consists of six hexagonally arranged position-sensitive Nal(TI) detectors.
(8) This result was quite the same as that of the hexagonal plate crystals.
(9) When negatively stained with uranyl acetate, LPSI was ribbon-like but LPSII exhibited hexagonal lattice structures.
(10) Endothelial specular photography during an attack reveals dramatic changes: large black nonreflecting areas between quite normal-looking hexagonal cells.
(11) It is suggested that distortion in the hexagonal lattice below the pretransition temperature previously reported by X-ray diffraction techniques may be responsible for interchain interactions which give rise to a Raman band observed only in the triclinic lattice of even-numbered n-alkanes.
(12) 31P-NMR and X-ray diffraction techniques are used to study the comparative ability of myelin basic protein (MBP) vs. other basic proteins to convert hexagonal (HII) phases to stable lamellar (L alpha) structures.
(13) The influence of the intercalation of ethidium bromide (EB) on the characteristics of the DNA cholesteric and hexagonal mesophases is studied by optical microscopy, circular dichroism, and X-ray diffraction.
(14) Wide angle X-ray diffraction results indicate no major effect of the protein on the 4.1 A spacing, characteristic of hexagonal packing of the hydrocarbon chains.
(15) After in vitro perfusion of cytochalasin D to the corneal endothelium, the F-actin became randomly distributed throughout the cytoplasm, the hexagonal shape of the endothelial cell was disrupted, and endothelial permeability to carboxyfluorescein increased.
(16) The thermophilic eubacterium Clostridium thermohydrosulfuricum L77-66 is covered by a crystalline surface layer composed of identical glycoprotein subunits which are arranged in a hexagonal lattice with centre-to-centre spacings of approx.
(17) Pyramidal, cubical or hexagonal magnetic grains could be seen in different species of bacteria.
(18) The six subunits form a hexagon which is skewed with respect to the main rows of hexagons in such a way that the subunits lie on rows which make an angle of approximately 37 degrees with the main rows.
(19) In the invaginating synapses of cone pedicles, the plasma membrane of the photoreceptor ending contains an aggregate of A-face particles, a hexagonal array of synaptic vesicle sites, and rows of coated vesicle sites, which are deployed in sequence from apex to base of the synaptic ridge.
(20) The design and construction of a transistor-driven hexagonal contour-clamped homogeneous electric field (CHEF) apparatus is discussed in detail.
Orthorhombic
Definition:
(a.) Noting the system of crystallization which has three unequal axes at right angles to each other; trimetric. See Crystallization.
Example Sentences:
(1) Based on the refined atomic coordinates of the tRNAphe in the orthorhombic crystal, on the recent advances in the distance dependence of the ring-current magnetic field effects and on the adopted values for the isolated hydrogen-bonded NH resonances, a computed spectrum consisting of 23 protons was constructed.
(2) 261, 16207-16209) that recombinant murine interferon-beta produced in Escherichia coli was crystallized in an orthorhombic space group C222(1) using polyethyleneglycol 8000 as precipitant, the crystals had an insufficient resolution and a marked tendency for orientational disorder around the c axis.
(3) The mutant proteins were screened for their ability to crystallize into the orthorhombic form and bind mercury ions isomorphously.
(4) In the orthorhombic crystal lattice, tRNA(Asp) molecules are associated by anticodon-anticodon interactions through a two-fold symmetry axis.
(5) The melamine forms disordered crystals of orthorhombic symmetry with a = 11.957(3), b = 17.267(3), c = 5.769(3)A.
(6) The crystals have a rhombic prismatic habit and belong to the orthorhombic space group C222(1) with unit cell dimensions a = 130 A, b = 213 A and c = 216 A. X-ray structure determination is underway.
(7) The subcell (HS1) is orthorhombic with as = 10.3, bs = 7.5 and cs = 2.54 A.
(8) N-Z-L-Pro-D-Ala-OMe, C17H22N2O5, Mr = 334.38, crystallizes in the orthorhombic space group P2(1)2(1)2(1), with the cell dimensions a = 5.005 (5), b = 17.690 (9) and c = 18.70 (1) A3, V = 1656.3 A3, Z = 4, Dx = 1.341 g cm-3, Cu K alpha, lambda = 1.54184 A, mu = 7.830 cm-1, F(000) = 712, T = 198 K, final R (on F) = 0.036 for 1575 observed reflections with I greater than or equal to 3 sigma(I).
(9) The crystals are orthorhombic, space group P212121, with a=8.611(2), B=6.138(2), And c=14.912(4) A. Least-squares refinements yielded a conventional R-factor of 0.036.
(10) The atomic coordinates of yeast phenylalanine transfer RNA (tRNA) as well as the torsion angles of the polynucleotide chain are presented as derived from an x-ray diffraction analysis of orthorhombic crystals.
(11) These crystals diffract to 3.4 A and the observed diffraction is consistent with orthorhombic space groups P4(1) and P4(3).
(12) Yeast phenylalanyl transfer RNA crystallizes in a simple orthorhombic unit cell (a = 33.2, b = 56.1, c = 161 A), and the crystal yields an x-ray diffraction pattern with a resolution of 2.3 A.
(13) Concanavalin A, a phytohemagglutinin isolated from the jack bean, crystallizes at pH 6.8 in the orthorhombic space group 1222 with a = 89.9, b = 87.2, and c = 63.1 A.
(14) C20H24O4, Mr = 328.41, orthorhombic, P2(1)2(1)2(1), a = 11.688 (3), b = 15.377 (5), c = 9.466 (2) A, V = 1701 (1) A3, Z = 4, Dx = 1.282 g cm-3, lambda (Mo K alpha) = 0.71073 A, mu = 0.823 cm-1, F(000) = 704, T = 298 K, R = 0.063 for 1921 reflections with F greater than 2 sigma (F).
(15) Above this temperature, this "orthorhombic" phase converts directly to the liquid-crystalline phase.
(16) The crystals exhibit strong F222 pseudo symmetry but belong to the orthorhombic space group C222 or C222(1), with cell parameters a = 73.8 A, b = 119.9 A and c = 133.2 A with two molecules per asymmetric unit.
(17) The crystal form is of the orthorhombic space group P2(1)2(1)2, with unit cell dimensions a = 150 A and b = 129 A.
(18) Crystals of methyl 3-O-beta-D-glucopyranosyl-beta-D-glucopyranoside (methyl beta-D-laminarabioside) belong to the orthorhombic system, space group P2(1)2(1)2, with a = 14.548(2), b = 24.252(7), c = 4.938(1) A, and Z = 4.
(19) The receptor fragment crystallizes in the orthorhombic space group P2(1)2(1)2(1), a = 105.5 A, b = 224.5 A, c = 363.5 A.
(20) 1-(2,6-Dihydroxy-4-methoxyphenyl)-3-(4-methoxyphenyl)-2-propen-1-o ne, C17H16O5, Mr = 300.31, orthorhombic, Pbca, a = 27.903 (3), b = 13.958 (2), c = 7.662 (1) A, V = 2984 (1) A3, Z = 8, D chi = 1.337 Mg m-3, lambda(Cu K alpha) = 1.5418 A, mu = 0.729 mm-1, F(000) = 1264, T = 295 K, R = 0.040 for 1702 observed reflections.