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isoelectric
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isoelectric
isoelectric, a. (aɪsəʊɪˈlɛktrɪk) [f. iso- + electric a.] 1. Equal in electrical potential; containing or indicating no potential difference.1877 Rosenthal Muscles & Nerves 179 On the outside of the cylinder these iso-electric surfaces are exposed. 1901 J. H. Raymond Human Physiol. (ed. 2) 445 A norm...
Oxford English Dictionary
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Isoelectric
Isoelectric may refer to:
Isoelectric point, the pH at which a particular molecule carries no net electrical charge
Isoelectric focusing, a technique for separating different molecules by differences in their isoelectric point
Isoelectric line representing the absence of electrical activity on an
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Isoelectric point
The isoelectric point (pI, pH(I), IEP), is the pH at which a molecule carries no net electrical charge or is electrically neutral in the statistical mean.The standard nomenclature to represent the isoelectric point is pH(I). However, pI is also used. For brevity, this article uses pI.The net charge on the molecule is affected by pH of its surrounding environment and can become more positively ...
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isoionic
isoionic, a. Physical Chem. and Biochem. (aɪsəʊaɪˈɒnɪk) [f. iso- + ionic a.2] Of a solute or solution: giving rise to or containing no noncolloidal ions other than those formed by dissociation of the solvent; isoionic point, † isoionic reaction, the point (usually pH value) at which the average numb...
Oxford English Dictionary
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Isoelectric focusing
Isoelectric focusing (IEF), also known as electrofocusing, is a technique for separating different molecules by differences in their isoelectric point Isoelectric focusing can resolve proteins that differ in pI value by as little as 0.01.
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Ampholine
Ampholine, n. Biochem. (ˈæmfəliːn) Also ampholine. [a. Sw. ampholine, f. *ampholyte n. + -ine5.] A proprietary name for ampholytes used to establish stable pH gradients in isoelectric focusing.1968 Trade Marks Jrnl. 3 July 1077/1 Ampholine... Chemical products for industrial and scientific use in th...
Oxford English Dictionary
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Isoionic point
It is different from the isoelectric point (pI) in that pI is the pH value at which the net charge of the molecule, including bound ions is zero. Thus, the isoelectric and isoionic points are equal when the concentration of charged species is zero.
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IEF
IEF may refer to:
Index of Economic Freedom
Integrated Education Fund (Northern Ireland)
International Energy Forum
Isoelectric focusing
Islamic
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How do you calculate or predict the charge of a protein at pH 7? How do you calculate or predict the charge of a protein at pH 7 given a fasta sequence? Any papers or online servers to do this is well appreciated.
Bear in mind though, most tools will tell you the _isoelectric point_ of your protein. <
*Update
Here's the exact tool to calculate isoelectric points: <
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Quantitative Phosphoproteomics Methods Based on Isoelectric Focusing ...
Quantitative Phosphoproteomics Methods Based on Isoelectric Focusing and ~(18)O Labeling Method Q67331736) From Wikidata
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HECW1
In human it has 1606 amino acids (179.5 kDa) and isoelectric point of 5.18.
References
Further reading
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Hexaxial reference system
An alternative use is to locate the most isoelectric (or equiphasic) lead (I, II, III, aVR, aVL, or aVF) on a diagnostic quality ECG with proper lead placement For example, if the most isoelectric (or equiphasic) lead is aVL, the perpendicular lead on the hexaxial reference system is lead II.
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نقطة تساوي الكهربائية
المصادر
IPC – Isoelectric Point Calculator — calculate protein isoelectric point using over 15 method
CurTiPot — a suite of spreadsheets for computing polyacrylamide gel electrophoresis;~ 2,000 proteins
Proteome-pI — a proteome isoelectric point database; predicted isoelectric point for all proteins
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二分法 (数学)
Bisection Method Notes, PPT, Mathcad, Maple, Matlab, Mathematica
True example of using bisection method in computer programming free program to isoelectric
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Phallolysin
The protein itself is observed to come in 3 variations, with observed differences in isoelectric point. Physical properties
Phallolysin has three variations, which differ in observed isoelectric point.
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