Amino Acids: Structure and Distribution

Tschiersch, B.; Mothes, K.

doi:10.1016/b978-0-12-395546-3.50010-x

Cited by 13 publications

(2 citation statements)

References 665 publications

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“…The low arginine values are unexpected, since one would suppose arginine phosphate to be present in the muscles. Several, preliminary "long column" runs in the ammo acid analyzer revealed the presence of ornithme, a known metabolite of arginine hydrolysis (Tschiersch and Mothes, 1963), at levels up to 5 mM/kg tissue water in animals held at the acclimation salinity of 30%o. Thus, it is conceivable that much of the arginine was converted, through hydrolysis, to ornithine and other metabolites.…”

Section: Discussionmentioning

confidence: 99%

OSMOTIC ADJUSTMENT IN AN ESTUARINE POPULATION OFUROSALPINX CINEREA(SAY, 1822) (MURICIDAE, GASTROPODA)

Turgeon

1976

The Biological Bulletin

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Individuals from a subtidal, estuarine population of the common oyster drill, Urosalpinx cinerea (Say, 1822), were brought into the laboratory and tested for osmotic adjustment to changing salinity. Tissue variables monitored at seven experimental salinities ranging from 10 to 40% were tissue fluid osmolality, chloride, sodium, potassium, free amino acids (FAA), ninhydrin-positive substances (NPS) and water content. The results of this study demonstrate that the test animals did not exhibit anisosmotic regulation at any of the experimental salinities. However, the data do suggest a high degree of hyper-ionic regulation of potassium at all experimental salinities and a hyporegulation of sodium between the 25 and 40% salinities. Taurine, aspartic acid, alanine and glycine were the four FAA present in relatively consistent high amounts. These four amino acids comprised from 59.6 to 75.7% of the total FAA pools. It is postulated that the population does not maintain its euryhaline survival status through an osmoregulatory mechanism. Rather, the population has probably adapted physiologically to withstand dilution of its body fluids during spring conditions of low salinities.

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Section: Discussionmentioning

confidence: 99%

OSMOTIC ADJUSTMENT IN AN ESTUARINE POPULATION OFUROSALPINX CINEREA(SAY, 1822) (MURICIDAE, GASTROPODA)

Turgeon

1976

The Biological Bulletin

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“…Others for which information is available include a,y-diaminobutyric acid (XXI) from Lathyrus species [25] which exerts its toxicity in mammals by inhibiting the action of the urea cycle enzyme ornithine transcarbamylase [26]. /I-Cyanoalanine (XXII) from Vicia species which acts as a cystathionase inhibitor [27] and canavanine which has been shown to be toxic to mice when fed at concentrations of 200 mg/kg mouse [28].…”

Section: Plant Animal Relationshipsmentioning

confidence: 99%