Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Comparison of the specific activity of ribulose‐1,5‐bis‐phosphate carboxylase‐oxygenase from some C3 and C4 plants
AU - Rintamäki, Eevi
AU - Keys, Alfred J.
AU - Parry, Martin A.J.
PY - 1988/10
Y1 - 1988/10
N2 - The specific activity of ribulose‐1,5‐bisphosphate carboxylase‐oxygenase (Rubisco, EC 4.1.1.39) was measured from the crude extracts of five C3 plants consisting of wheat (Triticum aestivum L. cv. Maris Mink), spinach (Spinacia oleracea L.), pea (Pisum sativum L. cv. Greenfeast), pumpkin (Cucurbita pepo L. cv. Jättiläismeloni) and Ceratodon purpureus (Hedw.) Brid., and two C4 plants, maize (Zea mays L. ETA F1) and sugar sorghum [Sorghum saccharatum (L. emend, L.) Moench]. The amount of Rubisco in the crude extracts was estimated by polyacrylamide gel electro‐phoresis with the Coomassie Brilliant Blue staining procedure. The amounts of the dye bound to the purified Rubisco of different higher plants were similar. The method gave a linear response for both purified enzyme and crude extracts, and the results agreed with those observed by immunochemical methods. The addition of positive effectors such as inorganic phosphate was necessary to obtain maximal activity in the crude extracts of all the studied plants except in that of maize. No significant differences in the specific carboxylase activity at 25°C were found between the C3 and C4 plants.
AB - The specific activity of ribulose‐1,5‐bisphosphate carboxylase‐oxygenase (Rubisco, EC 4.1.1.39) was measured from the crude extracts of five C3 plants consisting of wheat (Triticum aestivum L. cv. Maris Mink), spinach (Spinacia oleracea L.), pea (Pisum sativum L. cv. Greenfeast), pumpkin (Cucurbita pepo L. cv. Jättiläismeloni) and Ceratodon purpureus (Hedw.) Brid., and two C4 plants, maize (Zea mays L. ETA F1) and sugar sorghum [Sorghum saccharatum (L. emend, L.) Moench]. The amount of Rubisco in the crude extracts was estimated by polyacrylamide gel electro‐phoresis with the Coomassie Brilliant Blue staining procedure. The amounts of the dye bound to the purified Rubisco of different higher plants were similar. The method gave a linear response for both purified enzyme and crude extracts, and the results agreed with those observed by immunochemical methods. The addition of positive effectors such as inorganic phosphate was necessary to obtain maximal activity in the crude extracts of all the studied plants except in that of maize. No significant differences in the specific carboxylase activity at 25°C were found between the C3 and C4 plants.
KW - C plants
KW - Ceratodon purpureus
KW - Cucurbita pepo
KW - inorganicphosphate
KW - Pisum sativum
KW - polyacrylamide gel electrophoresis
KW - ribulose‐1,5‐bisphosphate carboxylase‐oxygenase
KW - Rubisco
KW - Sorghum saccharatum
KW - specific activity
KW - Spinacia oleracea
KW - Triticum aestivum
KW - Zea mays
U2 - 10.1111/j.1399-3054.1988.tb00638.x
DO - 10.1111/j.1399-3054.1988.tb00638.x
M3 - Journal article
AN - SCOPUS:84989682259
VL - 74
SP - 326
EP - 331
JO - Physiologia Plantarum
JF - Physiologia Plantarum
SN - 0031-9317
IS - 2
ER -