Structure of V-Compound produced by Eremothecium Ashbyii

Some nutritional requirements for biosynthesis of riboflavin by Eremothecium ashbyii.

Eremothecium ashbyii Guilliermond is a remarkable organism because of its capability of synthesizing relatively large amounts of riboflavin under appropriate conditions. This vitamin is synthesized to a limited extent by a rather wide variety of microorganisms (Pridham, 1952), but those known particularly for their riboflavin producing abilities along with E. a&hbyii are Ashbya gosypi'i (Wicker...

Guanosine diphosphate glucose and guanosine diphosphate fructose in Eremothecium ashbyii.

Chaykin, S., Law, J., Phillips, A. H., Tchen, T. T. & Bloch, K. (1958). Proc. nat. Acad. Sci., Wash., 44, 998. Cornforth, J. W., Cornforth, R. H., Popjak, G. & Gore, I. Y. (1958). Biochem. J. 69, 146. de Waard, A. (1958). Doctoral Thesis: University of Utrecht, Holland; Investigations on the intermediates in the biosynthesis of fatty acids and cholesterol. Nijmegen: Drukkerij Gebr. Janssen. de ...

The effects of certain purines and pyrimidines upon the production of riboflavin by Eremothecium ashbyii.

Eremothecium ashbyii is one of a number of organisms which produce considerable amounts of riboflavin, most of which is secreted by the cells into the medium (Guilliermond, 1935). The investigations of Schopfer (1944) and Schopfer and Guilloud (1945) resulted in the development of a synthetic medium for this organism which permitted growth and riboflavin production to occur under chemically def...

Studies on the biosynthesis of riboflavin; nitrogen metabolism and flavinogenesis in Eremothecium ashbyii.

The utilization of the ureide carbon of adenine in the biosynthesis of riboflavin in Eremothecium ashbyii.

There is considerable evidence that a critical reaction in purine synthesis is the closure of the purine ring by the addition of a “formate” group to 4-amino-5-imidazolecarboxamide ribonucleotide (1). Apparently the “formate” is added as an active intermediate, since formate as such has little effect in stimulating purine synthesis. Indeed, there is a demonstrable difference in the utilization ...