Subunit structure of Ca++ dependent soluble goat hepatic lectin: evidence that it has antigenic structural relationship with soluble 14K lectin family.
The subunit structure of soluble goat hepatic lectin was studied by determining molecular weight under nondenaturing conditions by gel filtration and denaturing conditions by SDS PAGE. Affinity purified lectin was subjected to HPLC on asahipack column equilibrated with 10 mM Tris-HCl pH 7.5, containing 1 mM CaCl2, 1mM 2-mercaptoethanol and 0.1M NaCl. The lectin was eluted under single peak at retention time of 12 min. corresponding to molecular weight of 38Kd. On SDS-PAGE in the presence and absence of 2-mercaptoethanol protein moved as single band with Rm 0.45, which corresponds to molecular weight of 20 Kd. The results suggest that soluble goat hepatic lectin is a dimmer of identical subunits which are linked together by noncovalent interactions. The interaction of monoclonal antibodies raised against soluble goat hepatic lectin (MGHL/20) with hemagglutinin from different species as sheep, human, rat, bovine and chicken was studied in PBS by solid phase binding assay. MGHL/20 showed 29.89% binding with these lectin. However no binding was found with Ca++ dependent membrane bound lectin. These results indicate that soluble goat hepatic lectin possesses antigenic structural relationship with soluble 14 K lectin family.[1]References
- Subunit structure of Ca++ dependent soluble goat hepatic lectin: evidence that it has antigenic structural relationship with soluble 14K lectin family. Ali, N., Ola, S., Bhat, R. Biochem. Mol. Biol. Int. (1996) [Pubmed]
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