TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A unit of linear measurement in the centimeter-gram-second system equivalent to 10^-10 metre, i.e. 1/10 000 000 000 metre.  6, record 1, English, - angstrom

Record number: 1, Textual support number: 1 OBS

Named in honour of Swedish physicist Anders J. Angström(1814-1874).... It equals 10^-10 metre, 10^-8 centimetre, 10^-4 micron, or 10^-1 millimicron. Such ultramicroscopic distances as the dimensions of atoms, molecules, unit cells and short wavelengths are expressed in angstroms.  2, record 1, English, - angstrom

Record number: 1, Textual support number: 2 OBS

As a unit, the initial letter of angstrom is sometimes capitalized.  2, record 1, English, - angstrom

Record number: 1, Textual support number: 3 OBS

The closest "equivalent" SI unit is the nanometre (1 nm = 10 Å). (SI: International System of Units).  6, record 1, English, - angstrom

Record number: 1, Textual support number: 4 OBS

AU; A.U.: These abbreviations could be confused with the symbols for "astronomical unit" and the chemical element "gold."  6, record 1, English, - angstrom

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Unité de longueur employée en microphysique, valant un dix-millième de micron.  3, record 1, French, - angstr%C3%B6m

Record number: 1, Textual support number: 1 CONT

Des études récentes [...] ont montré que dans les verres volcaniques où les cristaux sont pourtant absents, l'altération progresse d'une façon analogue, entre des particules sphériques de quelques centaines à quelques milliers d'angströms.  4, record 1, French, - angstr%C3%B6m

Record number: 1, Textual support number: 1 OBS

Unité de longueur mesurant 10^-8 cm.  5, record 1, French, - angstr%C3%B6m

Record number: 1, Textual support number: 2 OBS

Cette unité ne fait pas partie du Système international d'unités (SI). Les unités reconnues par le SI, qui peuvent être utilisées à la place de l'ångström sont le picomètre (1 Å = 100 pm) et le nanomètre (1 Å = 0,1 nm). Il semblerait que le picomètre remplace l'ångström pour mesurer les longueurs des liaisons chimiques.  6, record 1, French, - angstr%C3%B6m

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 DEF

Medida de longitud que equivale a una diezmillonésima de milímetro.  3, record 1, Spanish, - %C3%A5ngstr%C3%B6m

Record number: 1, Textual support number: 1 CONT

El tamaño de un virus varía de 100 a 2000 angströms, por lo que únicamente se pueden observar con la ayuda de un microscopio electrónico.  4, record 1, Spanish, - %C3%A5ngstr%C3%B6m

Record number: 1, Textual support number: 1 OBS

Sirve para medir la longitud de onda de las radiaciones luminosas así como las dimensiones atómicas.  2, record 1, Spanish, - %C3%A5ngstr%C3%B6m

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

Triggered conformational changes... are the motions of groups of atoms(i. e. individual side-chains) or whole sections of a protein(i. e. loops of chain, domains of secondary and tertiary structure, or subunit), which occur as a response to a specific stimulus. The distance moved can be as much as 10 [angstrom unit] or more. The time scale can be estimated by studies of the rate of binding or turnover reactions. The energy for triggered conformational change comes from specific interactions, such as electrostatic attractions or hydrogen bonding interactions. The best-known example of a triggered conformational change is the transition in tertiary structure that occurs when ligands bind to the iron atoms of hemoglobin.  1, record 2, English, - triggered%20conformational%20change

Record number: 2, Textual support number: 1 OBS

The types of substances whose binding can trigger a specific conformational change include substrates (dihydroxyacetone phosphate in triose phosphate isomerase), coenzymes (NAD binding to lactate dehydrogenase), allosteric effectors (CTP and ATP in aspartic transcarbamylase), inhibitors (statine-containing polypeptide inhibitors of acid proteases) and even protons (the Bohr effect in hemoglobin; pH-dependent conformational changes in adenylate kinase).  1, record 2, English, - triggered%20conformational%20change

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Modification de la conformation des protéines provoquée par la fixation de ligands à leur surface. Parmi ces ligands, notons les substrats, activateurs, inhibiteurs et coenzymes.  2, record 2, French, - changement%20de%20conformation%20prot%C3%A9ique%20induit

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

Planetary Parallax. Suppose observers at Earth's North Pole and South Pole use a transit of the Sun by Venus to discover that the angular size of Earth as viewed from Venus would be 62. 8 arcseconds. Earth's radius is 6378 km. Estimate the distance between Venus and Earth in km and AU [angstrom unit].  1, record 3, English, - planetary%20parallax

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

Rappelons que la «parallaxe» d'une planète est l'angle sous lequel on voit le rayon terrestre du centre de cette planète. Il convient de ne pas confondre la définition d'une parallaxe planétaire avec celle d'une parallaxe stellaire.  1, record 3, French, - parallaxe%20plan%C3%A9taire

Record 3,  Textual support,  Spanish