Studies on urease extracted from Ulva lactuca

descriptionPublicationkeyboard_double_arrow_right Article , Part of book or chapter of book 01 Jan 1984 English Publisher:Springer Science and Business Media LLCJournal:Hydrobiologia, volume 116-117, pages 580-583 (issn: 0018-8158, eissn: 1573-5117,

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Authors: I. A. Bekheet; K. M. Kandil; N. Z. Shaban;

doi: 10.1007/bf00027751 , 10.1007/978-94-009-6560-7_120

Studies on urease extracted from Ulva lactuca

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Abstract

Urea is an excellent nitrogen source for the growth of many algae (Syrett 1962; Naylor 1970). In algae, the enzymes which degrade urea are urease and ATP: urea amidolyase (U ALase) (Leftley & Syrett 1973). The properties of urease and U ALase are obviously different; consequently, they can be easily distinguished in extracts. U ALase requires ATP, Mg2+, K+ and is inhibited by avidin (Roon & Levenberg, 1968; Rognes et al. 1969). The purified enzyme has an absolute requirement for CO2 (Roon & Levenberg 1968). Urease does not require cations and is not stimulated by ATP or inhibited by avidin.

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Alexandria University
Egypt

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