Abstract
Seeds contain protective proteins which are able to preserve glucose-6-phosphate dehydrogenase (EC 1.1.1.49) activity upon co-dehydration of the enzyme with heat-stable seed protein extracts. Adenanthera pavonina L. (saga) seed extracts, in particular, have high levels of enzyme-preserving activity which not only alleviate the detrimental effects of desiccation in the presence of Tris–HCl and NaCl, but also stabilize enzyme activity in solution. Purification of Adenanthera seed extracts by reversed-phase and weak anion-exchange perfusion chromatography, followed by N-terminal protein sequencing have identified Kunitz-type trypsin inhibitors as the major proteins in one set of enzyme-preserving fractions. A quantitative comparison using various concentrations of purified proteins has demonstrated that soybean Kunitz trypsin inhibitor is as effective (on a mass basis) as bovine serum albumin in preserving enzyme activity, and may be an important protein permitting enzyme dehydration in a seed undergoing desiccation.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.