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Further characterization and structural studies on human placenta lectin.
Journal of Biochemistry
|April 1, 1987
Summary
Human placenta beta-galactoside-binding lectin shares properties with chick lectins. Sequence analysis reveals conserved regions crucial for function, suggesting evolutionary links.
Area of Science:
- Biochemistry
- Molecular Biology
- Glycobiology
Background:
- Beta-galactoside-binding lectins play roles in cellular interactions.
- Human placenta lectins are involved in various biological processes.
Purpose of the Study:
- To characterize the biochemical and structural properties of human placenta beta-galactoside-binding lectin.
- To investigate its relationship with homologous lectins from other species.
Main Methods:
- Isoelectric focusing
- SDS-polyacrylamide gel electrophoresis
- High-performance gel chromatography
- Thiol modification assays
- Amino acid sequencing
Main Results:
- The lectin exhibited multiple bands on isoelectric focusing but was homogenous by SDS-PAGE.
- It exists primarily as a monomer with some dimer formation.
- The lectin showed homology to chick lectins, with a conserved functional region.
- Five free thiol groups were identified per subunit.
Conclusions:
- Human placenta beta-galactoside-binding lectin is structurally and evolutionarily related to chick lectins.
- A conserved amino acid sequence is likely important for lectin function.