6533b837fe1ef96bd12a202a
RESEARCH PRODUCT
Influence of antibody binding on oxygen binding behavior of Panulirus interruptus hemocyanin
Heinz DeckerFrank G. PertonJaap J. Beintemasubject
Protein ConformationStereochemistrymedicine.drug_classProtein subunitmedicine.medical_treatmentcooperativityBiophysicsCooperativityPlasma protein bindingmacromolecular substancesMonoclonal antibodyBiochemistryEpitopesImmunoglobulin Fab FragmentsProtein structureSUBUNIT-AStructural BiologyAMINO-ACID SEQUENCEGeneticsmedicineAnimalsCRYSTAL-STRUCTUREMolecular BiologyPanulirus interruptusChemistryImmunoglobulin Fab FragmentsAntibodies MonoclonalHemocyaninCell BiologyNephropidaeOxygenBiochemistryRESOLUTIONHemocyaninsoxygen bindingmonoclonal antibodieshemocyaninOxygen bindingProtein Bindingdescription
Oxygen binding behavior of monomeric subunit a and the hexameric form of this subunit of hemocyanin of Panulirus interruptus is influenced by the binding of various monoclonal antibodies. These antibodies react with other surface parts of the subunit than its second domain in which the oxygen binding site is located. The influence of three monoclonal antibodies and their antigen binding fragments (F-ab) has been investigated. Two antibodies increase the oxygen affinity of monomeric hemocyanin from that observed in its low affinity T-state, while the third has little influence on this property. F-ab fragments abolish almost completely the cooperativity of oxygen binding by the hexameric hemocyanin molecule. The two antibodies which increase the oxygen affinity of the monomeric molecule stabilize high-affinity states of the hexameric molecule, while the third stabilizes the low-affinity state. (C) 1997 Federation of European Biochemical Societies.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-05-19 |