Protein Size and Structure
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Proteins can exist as monomers that consist of a single folded peptide strand or multimers consisting of more than one folded peptide strand. Multimers have a consistent naming scheme that denotes how many subunits a protein has and whether or not those subunits are the same. For example, a dimer consists of two subunits, a trimer three, a tetramer four, so on and so forth. The homo and hetero prefix then denotes whether the subunits are identical or not. For example, a homodimer is composed of two identical protein subunits while a heterodimer would be composed of two different protein subunits.
Given this information what is the total weight of a homotetrameric hemoglobin protein if its monomers weigh 75-kDa each?
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