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[15-Hydroxyprostaglandin dehydrogenase from human placenta. 1. Isolation and characterization]
Hoppe-Seyler'S Zeitschrift Fur Physiologische Chemie
|June 1, 1975
Summary
15-Hydroxyprostaglandin dehydrogenase was purified from human placenta, yielding a stable enzyme preparation. This research confirms no isoenzymes exist for this prostaglandin-metabolizing enzyme.
Area of Science:
- Biochemistry
- Enzymology
Context:
- Prostaglandins play crucial roles in various physiological processes.
- 15-Hydroxyprostaglandin dehydrogenase (15-PGDH) is key in prostaglandin metabolism.
- Understanding 15-PGDH is vital for studying prostaglandin-related functions.
Purpose:
- To isolate and purify 15-hydroxyprostaglandin dehydrogenase from human term placenta.
- To characterize the enzyme's properties, including stability, activity, and molecular weight.
- To investigate the potential existence of isoenzymes for 15-PGDH.
Summary:
- 15-Hydroxyprostaglandin dehydrogenase was purified 380-fold from human term placenta.
- The enzyme preparation demonstrated stability in glycerol and 2-mercaptoethanol for over a year.
- Polyacrylamide gel electrophoresis and activity staining confirmed a single protein band, indicating no isoenzymes were detected.
- Kinetic and physical properties, including pH optimum, temperature dependence, and molecular weight (32,000 ± 3,000 Da), were determined.
Impact:
- Provides a highly purified and stable 15-hydroxyprostaglandin dehydrogenase for further research.
- Establishes the absence of detectable isoenzymes, simplifying future studies on prostaglandin metabolism.
- Offers insights into the biochemical characteristics of 15-PGDH, relevant to prostaglandin signaling and therapeutic targets.