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311.
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E G Hayman B K Pal M M Lai P Roy-Burman 《Biochemical and biophysical research communications》1977,78(4):1156-1161
The 19,000 dalton phosphoprotein (pp19) of avian sarcoma virus strain B77 isolated by guanidine-agarose chromatography was further resolved into multiple charged species by DEAE-cellulose chromatography. A comparison of the tryptic peptide maps of 125I-iodinated lowly phosphorylated and highly phosphorylated species of the pp19 suggested that the same polypeptide occurs in the virion in different phosphorylated states. 相似文献
313.
314.
Ernest P. Hayman Henry Yokoyama Clinton O. Chichester Kenneth L. Simpson 《Journal of bacteriology》1974,120(3):1339-1343
It was determined that lycopene could be cyclized directly by Rhodotorula glutinis. It was also shown the the temperature effect (i.e., increased beta-carotene synthesis in response to lower incubation temperatures) in R. glutinis was controlled by changes in enzyme concentration. 相似文献
315.
Topsoil stockpiled for 4 years resulted in an accumulation of NH4-N at depths of 1m or more in mound, as measured by an ammonia gas-sensing electrode. When leached with water these soils were also found to contain high concentrations of dissolved organic C below 1m. Both NH4-N and DOC were products of microbial mineralisation of soil organic matter that accumulated under anaerobic conditions. When these soils were restored a flush of decomposition took place, fuelled by labile organic matter and soluble nitrogen.Stockpiled soil which underwent an ammonium-rich perfusion regime in the laboratory indicated that in-mound soils rapidly attained greater nitrification potential than surface mound soils and also had greater potential for further mineralisation of organic matter to NH4-N. This further production was seen as a contribution from the bacterial flush, stimulated by the large labile-C pool already present.As the bulk of stored soil was anaerobic, restored soils were seen as potentially wasteful of their N-reserves; the fate of nitrogen and soluble carbon compounds in restored soils is discussed. 相似文献