erg

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erg

(ûrg), unit of workwork,
in physics and mechanics, transfer of energy by a force acting to displace a body. Work is equal to the product of the force and the distance through which it produces movement.
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 or energyenergy,
in physics, the ability or capacity to do work or to produce change. Forms of energy include heat, light, sound, electricity, and chemical energy. Energy and work are measured in the same units—foot-pounds, joules, ergs, or some other, depending on the system of
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 in the cgs systemcgs system,
system of units of measurement based on the metric system and having the centimeter of length, the gram of mass, and the second of time as its fundamental units. Other cgs units are the dyne of force and the erg of work or energy.
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 of units, which is based on the metric systemmetric system,
system of weights and measures planned in France and adopted there in 1799; it has since been adopted by most of the technologically developed countries of the world.
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; it is the work done or energy expended by a force of 1 dyne acting through a distance of 1 centimeter. In terms of the joulejoule
, abbr. J, unit of work or energy in the mks system of units, which is based on the metric system; it is the work done or energy expended by a force of 1 newton acting through a distance of 1 meter. The joule is named for James P. Joule.
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, the unit of work or energy in the mks system, 1 erg equals 0.0000001 joule.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Erg

 

a unit of work or energy in the centimeter-gram-second system. The symbol is erg. One erg is equal to the work done by a force of 1 dyne when the point at which the force is applied is displaced 1 cm in the direction of the force. One erg equals 10–7 joule = 6.24 × 1011 electron volts.


Erg

 

a general name for sand masses in the deserts of North Africa. Ergs are usually confined to low-lying parts of the relief. The largest are the Grand Erg Occidental and the Grand Erg Oriental. The relief consists mainly of dunes, which rise to 200–300 m in height, stretching in the direction of the prevailing trade winds.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

erg

[ərg]
(geography)
A large expanse of the earth's surface that is covered with sand, generally blown by wind into dune formations.
(physics)
A unit of energy or work in the centimeter-gram-second system of units, equal to the work done by a force of magnitude of 1 dyne when the point at which the force is applied is displaced 1 centimeter in the direction of the force. Also known as dyne centimeter (dyne-cm).

ERG

(medicine)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

erg

A unit of energy in the CGS system. It is equal to .0000001 joule in the MKS system. See CGS system.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
Using short interfering RNA, the authors managed to decrease the RNA level of a mutant KCNH2 (hERG) allele (c.G1681A) by 61.8%, thereby increasing probability of formation of functional hERG tetramer by 4.5 times.
The genetic screening showed that the patient had the c.A2987T (p.N996I) mutation in KCNH2. In order to verify the role of this mutation in LQT syndrome development, two pairs of isogenic pluripotent cell lines that had the same genetic background and differed only by one point mutation were used.
Although iPSC-CMs express relevant ion channel genes (SCN5A, KCNJ2, CACNA1C, KCNQ1, and KCNH2), structural genes (MYH6, MYLPF, MYBPC3, DES, TNNT2, and TNNI3), and transcription factors (NKX2.5, GATA4, and GATA6) [77], they differ from adult ventricular cardiomyocytes in a number of properties.
Fukuda, "The generation of induced pluripotent stem cells from a patient with KCNH2 G603D, without LQT2 disease associated symptom," Journal of Medical and Dental Sciences, vol.
Six exons had low coverage in all samples examined by all methods [APOB (apolipoprotein B) exon 1, KCNH2 exon 13, KCNQ1 (potassium voltage-gated channel, KQT-like subfamily, member 1) exon 1, RYR1 (ryanodine receptor 1 [skeletal]) exon 90, SCN5A (sodium channel, voltage-gated, type V, [alpha] subunit) exon 1, TGFBR1 (transforming growth factor, [beta] receptor 1) exon 1].
generated hiPSC-CMs from both symptomatic and asymptomatic patients with a G1681 mutation in KCNH2 and put more emphasis on iPS-based disease modelling as a drug screen platform.
Here we describe a rapid single-strand conformation polymorphism-heteroduplex (SSCP-HD) analysis method for screening for mutations in all coding regions of the KCNH2 and KCNE2 genes, and identify 11 KCNH2 mutations, 6 of which were novel, and several polymorphisms in 40 families with LQTS.
Intronic PCR primer sequences were designed for robust amplification of the KCNH2 and KCNE1 exons, without nesting or additives (19, 20), under identical thermocycling conditions.
Forty probands were screened for KCNH2 and KCNE2 mutations using SSCP-HD analysis.
A rare allelic variant of KCNH2 encoding an Arg1047Leu amino acid variant was found in 3 of 80 wild-type alleles (Table 3).
We also identified eight different single-nucleotide polymorphisms (SNPs) in KCNH2 and one SNP in KCNE2 among the patients and the wild-type controls (Table 3).
The 29 probands without mutations in KCNH2 were also screened for mutations in KCNQ1, KCNE1, and SCN5A, and several additional mutations were found (M.