Calcium Transport in Prokaryotes

作者: ANITA R. LYNN , BARRY P. ROSEN

DOI: 10.1016/B978-0-12-596935-2.50008-6

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摘要: Publisher Summary This chapter focuses on calcium transport in prokaryotes. Calcium is the fifth most abundant (3.6% by weight) element earth's crust, of alkali and alkaline earth metals. Metallic reactive thus, it not found free state but only as divalent cation. A number exoenzymes require for activation. a required cofactor converts apoenzyme into functional enzyme such instances α-amylase Bacillus subtilis thermolysin thermoproteolyticus. Azotobacter vinelandii also requires encystment. An extracellular requiring activity involved synthesis alginic acid polymers which cyst constructed. In Escherichia coli, cobalamin across outer membrane apparently high-affinity binding to its receptor. cases, magnesium generally cannot replace calcium. reasonable present cytosol could lead intracellular activation these enzymes and, some breakdown products.

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