polyamine

pol·y·am·ine

(pol'ē-am'ēn), Although this word is correctly stressed on the second-last syllable, U.S. usage often stresses it on the last syllable.

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 polyamines arise by bacterial action on protein; many are normally occurring body constituents of wide distribution or are essential growth factors for microorganisms.

[G. polys, much, many + amine]

polyamine

/poly·am·ine/ (-am´ēn) any compound, e.g., spermine or spermidine, containing two or more amino groups.

polyamine

(pŏl′ē-ə-mēn′, -ăm′ēn)

Any of a group of organic compounds, such as spermine and spermidine, composed of only carbon, nitrogen, and hydrogen and containing two or more amino groups.

polyamine

[pol′ē·am′ēn]

any compound that contains two or more amine groups, such as spermidine, spermine, and putrescine that are normally found in human tissue. Many polyamines function as essential growth factors in microorganisms such as in DNA synthesis and gene expression.

pol·y·am·ine

(pol'ē-am'ēn) Although this word is correctly stressed on the second-last syllable, U.S. usage often stresses it on the last syllable.

Many arise from bacterial action on protein; others are normally occurring body constituents of wide distribution or are essential growth factors for microorganisms.

[G. polys, much, many + amine]

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References in periodicals archive ?

AdoMet acts as methyl donor to DNA, RNA, proteins and small molecules, as a propylamine donor in the synthesis of the polyamines (PAs).

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Lei and Wang developed explosive-detection polymers that include a polyamine polymer functionalized with a small fluorophore.

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In recent years, we have seen a steady increase in the number of studies examining the role of intracellular polyamine metabolism in tumor development.

The Dysregulation of Polyamine Metabolism in Colorectal Cancer Is Associated with Overexpression of c-Myc and C/EBP[beta] rather than Enterotoxigenic Bacteroides fragilis Infection

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3), (8) Polyamines are critical for the effective regulation of normal cell growth, (3), (9) and evidence suggests they play a role in programmed cell death (apoptosis).

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Hydroxylated polyamines can be considered suitable starting materials for the preparation of liquid crystalline polyamines by means of chemical modification, which can combine the existence of an ordered structure with the presence of basic and coordinative positions.

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Although MTX indeed suppresses polyamine levels in lymphocytes of rheumatoid arthritis patients, this effect is also reversed by folic acid.

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Scientists in Singapore have discovered that precise regulation of polyamine levels is critical for embryonic stem cell (ESC) self-renewal, the ability of ESCs to divide indefinitely, and for directed differentiation.

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Component A within this product contains the pigment and epoxy resin which is then blended seamlessly with component B, which is a non-pigmented Polyamine, which acts as a hardener or curing agent for component A.