Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:3.4.21.5 (thrombin)
 33,306 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A unique murine monoclonal antibody (LK-4) is described which differentiates PLA1/PLA1 platelet extracts from PLA2/PLA2 and PLA1/PLA2 platelet extracts on solid phase ELISA and immunoblot at the 100kD GPIIIa location, but not on intact platelets. LK-4 reacts equally with intact PLA1/PLA2 and PLA2/PLA2 platelets. Adsorbtion of LK-4 with PLA1/PLA1 platelets results in loss of reactivity for intact platelets as well as platelet extracts on ELISA or immunoblot. LK-4 inhibits platelet aggregation induced by ADP, epinephrine, collagen and thrombin, suggesting reactivity at or near the fibrinogen binding site on GPIIIa. It is suggested the LK-4 reacts with a conformation-induced common epitope for PLA1 and PLA2 on GPIIIa, with loss of this conformation for PLA2 GPIIIa following solubilization with Triton X-100.
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PMID:A monoclonal antibody (LK-4) which differentiates PLA1 from PLA2 platelet extracts but not intact platelets. 138 61