ÆäËûÖÐÎÄÃû³Æ £º Á×õ¥Ã¸A2
Ó¢ÎÄÃû³Æ £º PLA2
ÆäËûÓ¢ÎÄÃû³Æ £º Lecithinase A£»Phosphatidylcholine 2-acylhydrolase£»Phospholipase A2
C A S £º 9001-84-7
¼¶ ±ð £º BR
À´ Ô´ £º Crotalus durissus terrificus venom
Activity £º ¡Ý200u/mg
»îÁ¦¶¨Òå £º One Unit releases one micromole of acid from soybean lecithin per minute at 25¡æ, pH 8.9
²úÆ·ÃèÊö £º Phospholipase A2 is a member of the class of heat-stable, calcium-dependent enzymes catalyzing the hydrolysis of the 2-acyl bond of 3-n-phosphoglycerides. The enzyme has a molecular weight of 30,000 daltons. Phospholipase A2 is activated by Ca2+. It is inhibited by zinc, barium, and manganese ions. Activity values for phospholipase A preparations which are derived from titrimetric assay procedures can be quite dependent on source and type of lecithin, its preparation as a substrate emulsion, other components of the reaction mixture, and the method and instrumentation used
À´ Ô´ £º honey bee venom
Activity £º 600¡«2400u/mg protein
À´ Ô´ £º porcine pancreas
Activity £º ¡Ý600 units/mg protein
»îÁ¦¶¨Òå £º One unit will hydrolyze 1.0 ¦Ìmole of soybean L-¦Á-phosphatidylcholine to L-¦Á-lysophosphatidylcholine and a fatty acid per min at pH 8.0 at 37 ¡ãC
ÐÔ ×´ £º °×É«»òÀà°×É«Ðü¸¡Òº¡£Suspension in 3.2 M (NH4)2SO4 solution, pH 5.5 ¡£EC3.1.1.4
ÐÔ ×´ £º ·ÛÄ©¡£EC3.1.1.4
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