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Dictionary » I » Isoelectric point

Isoelectric point

Definition

noun

The pH wherein a zwitterion or amphoteric molecule has no net electric charge since it has equal number of cations and anions as well as the net charge of its bound ions is also zero.


Supplement

Word origin: iso- means equal

Abbreviation: pI

Compare: isoionic point


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Results from our forum


Isoelectric points of selenocysteine and pyrrolysin

Hallo, I am looking for the isoelectric points of selenocysteine and pyrrolysin, but so far, I was unable to find them. All sources I have found ...

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by 3of8
Sat Feb 27, 2010 12:00 am
 
Forum: Molecular Biology
Topic: Isoelectric points of selenocysteine and pyrrolysin
Replies: 0
Views: 743

Re: Isoelectric Point

... The other problem is estimation of pK values. More info about this you can find on http://isoelectric.ovh.org/ There you will be able to calculate IP for given sequence using different pKs or download all PDB database with calculated isoelectric ...

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by biotechatrocketmail
Wed Nov 19, 2008 9:42 am
 
Forum: Molecular Biology
Topic: Isoelectric Point
Replies: 5
Views: 3100

Isoelectric Point

I am no expert, but an isoelectric point determination program should work with PDB files, as you need to know its 3D shape. It doesn't matter ...

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by MrMistery
Thu Nov 29, 2007 8:06 pm
 
Forum: Molecular Biology
Topic: Isoelectric Point
Replies: 5
Views: 3100

Isoelectric Point

Can someone tell me how to find the theoretical isoelectric point of a given protein? Is there an equation? Or a search tool? I tried pubmed but I couldn't find ...

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by rikajaj
Thu Nov 29, 2007 2:12 am
 
Forum: Molecular Biology
Topic: Isoelectric Point
Replies: 5
Views: 3100

protein please...

... topic. Umm, I wanna ask about protein's behavior when it reaches its isoelectric point. My assistant said that at its isoelectric point, protein will become a zwitter ion where ...

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by victor
Sun Nov 12, 2006 1:14 pm
 
Forum: Molecular Biology
Topic: protein please...
Replies: 7
Views: 2891
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