Zur Kenntnis der Synthese von Eiweißstoffen und ihrer Bausteine bei höheren Pflanzen

Björkstén, Johan

doi:10.1007/978-3-662-31489-0

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“…It is clear that for the formation of protein from asparagine two carbon atoms must be supplied from other sources, presumably carbohydrate or its breakdown products, for each atom of nitrogen used. The work of Bjorksten (1930) and of Bjorksten & Himberg (1930) (see p. 41) shows that amides may take part in protein synthesis without the formation of free ammonia, though there is still no direct evidence that the carbon chain of the amide is used in the synthesis, as was suggested by E. Schulze. It is clear that our views on this matter must ultimately depend on our knowledge of the structure of the plant proteins.…”

Section: Coohmentioning

confidence: 99%

A Review of Recent Work on the Nitrogen Metabolism of Plants, Part Ii

McKee

1937

New Phytologist

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With I figure in the text) THE ACID AMIDES I N her 1929 review M. E. Robinson summarized the work of E.Schulze and of Pryanishnikov on the role of the acid amides, especially asparagine, in the plant's protein metabolism. Schulze held that asparagine was an essential stage in the synthesis of protein, while Pryanishnikov regarded it rather as a means of storing ammonia in a harmless form, its function thus being similar to that of urea in the animal, except that the latter is excreted and the nitrogen of the asparagine is still available for protein synthesis. The analogy of function between asparagine and urea has also been stressed by Murneek (1935) in a review of work on the metabolism of amides in the plant. The schemes he gives for their formation must now be regarded as unlikely, but this, of course, does not affect the functional analogy. Pryanishnikov's views on the position of asparagine in plant metabolism may be indicated in the following diagram, which is quoted from M. E. Robinson. Amino-acids >• Protein >.Amino-acids t i HNO, ^NH3-« Asparagine -< NHj COOH COOH COj CHNHj CO CHO COOH COOH

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Section: Coohmentioning

confidence: 99%

A Review of Recent Work on the Nitrogen Metabolism of Plants, Part Ii

McKee

1937

New Phytologist

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Zur Kenntnis der Synthese von Eiweißstoffen und ihrer Bausteine bei höheren Pflanzen

Cited by 1 publication

References 0 publications

A Review of Recent Work on the Nitrogen Metabolism of Plants, Part Ii

A Review of Recent Work on the Nitrogen Metabolism of Plants, Part Ii

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