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. 1983 Apr;71(4):966–968. doi: 10.1104/pp.71.4.966

Ploidy Effects in Isogenic Populations of Alfalfa (Medicago sativa L.) 1

IV. Similarity in Physical and Kinetic Properties of Ribulose-1,5-bisphosphate Carboxylase/Oxygenase

Steven P Meyers 1,2,3, A Chris Brinegar 1,2,3, Larry E Schrader 1,2,3,2, Douglas B Jordan 1,2,3, William L Ogren 1,2,3
PMCID: PMC1066152  PMID: 16662937

Abstract

Ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBPCase) was isolated from isogenic diploid-tetraploid and tetraploid-octoploid sets of alfalfa (Medicago sativa L.) leaves. Molecular weights of RuBPCase subunits were similar across ploidy levels of both isogenic sets with subunits of 52,000 and 14,000. Apparent Km(CO2) values and substrate specificity factors (VcKo/VoKc) of RuBPCase were similar across ploidy levels of both isogenic sets. These results indicate that ploidy had no effect on the kinetic properties of RuBPCase in alfalfa.

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Selected References

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