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Measuring Plasma Membrane Protein Endocytic Rates by Reversible Biotinylation
Published on: December 23, 2009
Iodination of soluble and membrane-bound proteins
1National Institute of Child Health and Human Development, Bethesda, Maryland.
Coupling of radioactive (125)I to soluble proteins is a critical step in a number of immunoassays. Chloramine T-catalyzed iodination of soluble proteins, such as immunoglobulins, is described in this unit. Protocols using lactoperoxidase-catalyzed iodination of soluble or membrane-bound proteins are also described.
Coupling of radioactive (125)I to soluble proteins is a critical step in a number of immunoassays. Chloramine T-catalyzed iodination of soluble proteins, such as immunoglobulins, is described in this unit. Protocols using lactoperoxidase-catalyzed iodination of soluble or membrane-bound proteins are also described.
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Broadly, these modifications can be categorized into four main categories — glycosylation, formation of disulfide bonds, assembly of protein subunits, and specific proteolytic cleavages like removal of signal sequences.

