putrescine

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putrescine:

see decay of organic matterdecay of organic matter
or putrefaction,
process whereby heterotrophic organisms, including some bacteria, fungi, saprophytic plants, and lower animals, utilize the remains of once-living tissue as a source of nutrition.
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Putrescine

 

(1,4-tetramethylenediamine), NH2(CH2)4NH2, one of the biogenic amines. Putrescine is a crystalline substance, with a melting point of 27°-28°C. It was first discovered in the products of the putrefactive decomposition of proteins. It is formed during the bacterial decarboxylation of the amino acid ornithine. In organic tissue, putrescine serves as the source compound for the synthesis of the physiologically active poly-amines spermidine and spermine. These substances, together with putrescine, cadaverine, and other diamines, are constituents of ribosomes and help support the ribosome structure.

References in periodicals archive ?
In another experiment, the concentration of 1,4-diaminobutane monomer was varied from 0.25M to 2.0M (step 2 Figure 1) to study the effect of monomer concentration.
The binding capacity of RC membrane grafted with 1,4-diaminobutane monomer is higher than 1,2-diaminoethane monomer as shown in Table 1.
1,5-Diaminopentane and 1,4-diaminobutane caused the largest changes in signal: the maximum oxygen sensor signal change in the case of the most efficient substrate, 1,5-diaminopentane, was 0.76 or 76% of the whole working range of the sensor.
The values of [K.sub.m] for 1,4-diaminobutane and 1,5-diaminopentane, 1.15 [+ or -] 0.16 and 1.92 [+ or -] 0.42 mmol/L respectively, were similar to earlier results, obtained with an oxygen sensor [16], but larger in comparison with spectrophotometric measurements [15, 16, 20, 21].
Progressively increasing the size of chelation rings to compounds with the potential to form 7-atom ring complexes with copper, such as 1,4-diaminobutane, led to much lower reactivity.
A detailed description of the modification of HDPE films, grafted with 0.13 wt% MA, with 1,4-diaminobutane in near critical propane has been reported earlier [16].
The standard BioLure bait dispensers (Suterra Inc., Bend, OR) for the Mediterranean fruit fly contain ammonium acetate, putrescine (1,4-diaminobutane), and trimethylamine hydrochloride, while a bait dispenser for Anastrepha spp.