Among the given statements, which one(s) is/are correct about alpha keratin? I. It is the primary structural protein of the skin. It. It's structure is reinforced by disulfide bridges from methionine residues. III. It is made up of 2 right-handed helices that are twisted together to form a sinistral super helix. Select the correct response: I only Ill only land lI Il only  I. Il, and III  land Ill • Il and III

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