Molecular mass by sodium dodecylsulfategel electrophoresis. Ferritin is a hollow
Chapter 25, Problem 25-40(choose chapter or problem)
Molecular mass by sodium dodecylsulfategel electrophoresis. Ferritin is a hollow iron-storage protein61 consisting of 24 subunits that are a variable mixture of heavy (H) or light (L) chains, arranged in octahedral symmetry. The hollow center, with a diameter of 8 nm, can hold up to 4 500 iron atoms in the approximate form of the mineral ferrihydrite (5Fe2O3 9H2O). Iron(II) enters the protein through eight pores located on the threefold
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