Purification and properties of acid phosphatase (EC 3.1.3.2) secreted by strain 74A of the mould Neurospora crassa
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
01/01/1996
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Resumo |
Both P-i-repressible acid phosphatases, IIb (mycelial) and IIc (extracellular), synthesized by Neurospora crassa and purified to apparent homogeneity by 7.5% PAGE, are monomers, are inhibited by 2 mM ZnCl2 and are nonspecifically stimulated by salts. However, the IIc form is activated by p-nitrophenylphosphate (in a negative cooperativity effect with a K-0.5 of 2.5 mM) whereas form IIb shows Michaelis kinetics, with a K-m of 0.5 mM. Thus, since both enzymatic forms may be expressed by the same gene (pho-3), it is possible that post-translational modifications lead to the excretion of an enzymatic form with altered Michaelis kinetics compared with the enzymatic form retained by the mycelium. |
Formato |
109-110 |
Identificador |
http://dx.doi.org/10.1007/BF00327816 World Journal of Microbiology & Biotechnology. London: Rapid Science Publishers, v. 12, n. 1, p. 109-110, 1996. 0959-3993 http://hdl.handle.net/11449/31569 10.1007/BF00327816 WOS:A1996TW25900027 |
Idioma(s) |
eng |
Publicador |
Rapid Science Publishers |
Relação |
World Journal of Microbiology & Biotechnology |
Direitos |
closedAccess |
Palavras-Chave | #acid phosphatase #enzyme secretion #fungi #Neurospora crassa #phosphate regulation |
Tipo |
info:eu-repo/semantics/article |