Extraction and Purification of Laccases from Rice Stems
BIO-PROTOCOL(2019)
摘要
Laccases are found in cell walls of plants in very low amounts. This protocol provides an efficient method to purify laccases from rice stems. The method involves three steps: 1) Isolation of total protein from rice stems using buffers with high salt concentration to extract protein from cell walls; 2) Purification of laccases using concanavalin-A beads; and, 3) In-gel staining of laccases with 4-hydroxyindole. Concanavalin-A specifically binds to internal or non-reducing terminal alpha-D-mannosyl and alpha-D-glucosyl groups found in glycoproteins and glycolipids. Laccases being glycoproteins binds to concanavalin-A during purification process and eluted with mannose.
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关键词
Laccase,Lignin,Cell wall,Phenylpropanoid pathway,Rice,Plants
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