Oxidation of secondary alcohols to methyl ketones by immobilized yeast cells.

Huang, Tung-Li; Fang, Bing-Shiun; Fang, Hsin Yuan

doi:10.2323/jgam.31.125

Cited by 5 publications

(1 citation statement)

References 3 publications

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“…Interestingly, a regulatory role of calcium, both in unicellular and filamentous cyanobacteria, has recently been established. For instance, photosystem II activity is lower in Ca2+-depleted Anacystis [23]; inorganic phosphate uptake is stimulated by Ca 2+ in Oscillatoria [3]; Ca 2÷ protects nitrogenase from inactivation by 0 2 [24][25][26] and Ca z÷ modulates the heterocyst frequency in Nostoc [27]. Also, the intracellular Ca 2+ level is regulated by a Ca 2+dependent ATPase in Anabaena [28].…”

Section: Discussionmentioning

confidence: 99%

Calmodulin in heterocystous cyanobacteria: biochemical and immunological evidence

Pettersson

Bergman

1989

FEMS Microbiology Letters

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The occurrence activity and localization of calmodulin in three heterocystous cyanobacteria of the genus Anabaena were studied. Boiled crude extracts caused a Ca2+‐dependent stimulation of NAD kinase. Such a stimulation was blocked by EGTA and chlorpromazine. SDS‐PAGE and Western blot analysis using antiserum against eukaryotic spinach calmodulin, revealed a polypeptide of about 17 kDa. Immunogold localization of calmodulin gave a dense gold label both vegetative cells and heterocysts. The label was mainly confined to the centroplasm in vegetative cells, while it was evenly distributed in the cytoplasm of mature heterocysts.

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