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Abstract:

Chloroplast fructose-1,6-bisphosphatase d-fructose 1,6-bisphosphate 1-phosphohydrolase, EC 3.1.3.11) isolated from spinach leaves, was activated by preincubation with fructose 1,6-bisphosphate. The rate of activation was slower than the rate of catalysis, and dependent upon the temperature and the concentration of fructose 1,6-bisphosphate. The addition of other sugar diphosphates, sugar monophosphates or intermediates of the reductive pentose phosphate cycle neither replaced fructose 1,6-bisphosphate nor modified the activation process. Upon activation with the effector the enzyme was less sensitive to trypsin digestion and insensitive to mercurials. The activity of chloroplast fructose-1,6-bisphosphatase, preincubated with fructose 1,6-bisphosphate, returned to its basal activity after the concentration of the effector was lowered in the preincubation mixture. The results provide evidence that fructose-1,6-bisophosphatase resembles other regulatory enzymes involved in photosynthetic CO2 assimilation in its activation by chloroplast metabolites. © 1980.

Registro:

Documento: Artículo
Título:Studies on the regulation of chloroplast fructose-1,6-bisphosphatase. Activation by fructose 1,6-bisphosphate
Autor:Chehebar, C.; Wolosiuk, R.A.
Filiación:Instituto de Investigaciones Bioquímicas, 'Fundación Campomar', Obligado 2490, 1428 Buenos Aires Argentina
Palabras clave:(Chloroplast); Activation; Fructose 1,6-bisphosphate; Fructose-1,6-bisphosphatase; Regulation; fructose bisphosphatase; fructose bisphosphate; hexose phosphate; article; chloroplast; drug effect; enzyme activation; enzymology; kinetics; metabolism; plant; Chloroplasts; Enzyme Activation; Fructose-Bisphosphatase; Fructosediphosphates; Hexosediphosphates; Kinetics; Plants
Año:1980
Volumen:613
Número:2
Página de inicio:429
Página de fin:438
DOI: http://dx.doi.org/10.1016/0005-2744(80)90097-2
Título revista:BBA - Enzymology
ISSN:00052744
CAS:fructose bisphosphatase, 9001-52-9; Fructose-Bisphosphatase, EC 3.1.3.11; Fructosediphosphates; Hexosediphosphates
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00052744_v613_n2_p429_Chehebar

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Citas:

---------- APA ----------
Chehebar, C. & Wolosiuk, R.A. (1980) . Studies on the regulation of chloroplast fructose-1,6-bisphosphatase. Activation by fructose 1,6-bisphosphate. BBA - Enzymology, 613(2), 429-438.
http://dx.doi.org/10.1016/0005-2744(80)90097-2
---------- CHICAGO ----------
Chehebar, C., Wolosiuk, R.A. "Studies on the regulation of chloroplast fructose-1,6-bisphosphatase. Activation by fructose 1,6-bisphosphate" . BBA - Enzymology 613, no. 2 (1980) : 429-438.
http://dx.doi.org/10.1016/0005-2744(80)90097-2
---------- MLA ----------
Chehebar, C., Wolosiuk, R.A. "Studies on the regulation of chloroplast fructose-1,6-bisphosphatase. Activation by fructose 1,6-bisphosphate" . BBA - Enzymology, vol. 613, no. 2, 1980, pp. 429-438.
http://dx.doi.org/10.1016/0005-2744(80)90097-2
---------- VANCOUVER ----------
Chehebar, C., Wolosiuk, R.A. Studies on the regulation of chloroplast fructose-1,6-bisphosphatase. Activation by fructose 1,6-bisphosphate. 1980;613(2):429-438.
http://dx.doi.org/10.1016/0005-2744(80)90097-2