polyamine

Polycations at physiological pH, polyamines can bind and interact with various other molecules within the cell. In particular interact with DNA but also may modulate ion channels and act as growth factors. Spermine has four positive charges, spermidine has three. The precursor of both, putrescine, has two.

Polyamine

A polyamine is an organic compound having two or more primary amino groups {chem|–NH|2}. This class of compounds includes several synthetic substances that are important feedstocks for the chemical industry, such as ethylene diamine {chem|H|2|N–CH|2|–CH|2|–NH|2}, 1,3-diaminopropane {chem|H|2|N–(CH|2|)|3|–NH|2}, and hexamethylenediamine...
Found on http://en.wikipedia.org/wiki/Polyamine

polyamine

A polymer of an amine. Class name for substances of the general formula H2N(CH2)nNH2, H2N(CH2)nNH(CH2)nNH2, H2N(CH2)nNH(CH2)nNH(CH2)nNH2, where n = 3, 4, or 5. Many polyamine's arise by bacterial action on protein; many are normally occurring body constituents of wide distribution, or are essential growth factors for microorganisms. ... Origin: G. ...
Found on http://www.encyclo.co.uk/local/20973

Polyamine

A short chained, but highly charged water soluble cationic polymer. Used typically as organic coagulant in water treatment and as anionic trash control agent in papermaking.
Found on https://www.encyclo.co.uk/local/22436

polyamine

Type: Term Pronunciation: pol′ē-am′ēn Definitions: 1. Class name for substances of the general formula H2N(CH2)nNH2, H2N(CH2)nNH(CH2)nNH&...
Found on http://www.medilexicon.com/medicaldictionary.php?t=70797
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