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Article

Cerium-based ultracytochemical localization of aspartate transcarbamylase activity in the cell membrane complex of Saccharomyces cerevisiae.

Micron (Oxford, England : 1993) - 1 Jun 1997

Vorísek J, Gas N, Denis-Duphil M

Abstract excerpt

Aspartate transcarbamylase (ATCase) activity was localized ultracytochemically in the yeast Saccharomyces cerevisiae by precipitation of its reaction product orthophosphate as cerium phosphate. We prefixed yeast cells with ice-cold 1% glutaraldehyde for 30 min which preserved 80% of ATCase activity. Cells were washed and incubated with ATCase substrates (aspartate, carbamyl phosphate) plus cerium chloride, and...

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PMID: 9332010
DOI: 10.1016/s0968-4328(97)00025-5

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