Final answer:
Both HSP-70 and HSP-90 share an ATPase domain which is involved in their functionality as heat shock proteins, essential in protein folding and repair mechanisms. The options given do not accurately represent the shared domains between these proteins, and a more precise biochemical analysis is required to determine their sequence and structural similarities.
Step-by-step explanation:
The similarity between HSP-70 and HSP-90 lies in the common domains they possess, which are involved in their functionality as heat shock proteins. Both HSP-70 and HSP-90 have an ATPase domain which enables them to hydrolyze ATP, a process crucial to their roles in protein folding and repair pathways. However, if we look at the options provided:
- A) Both have J Domains, ATPase Domain
- B) Shared H Domain, DNA Binding Domain
- C) Conserved S Domain, Peptide Binding Domain
- D) Common Nucleotide Binding Domain, C Domain
We can infer from the context given that while both proteins have domains involved in ATP binding and hydrolysis, the options do not precisely reflect the shared domains based on the standard nomenclature and known functionality of HSP-70 and HSP-90. Therefore, even though HSP-70 and HSP-90 share an ATPase activity, the answer requires more specific biochemical information about the domain structure of these proteins that is not provided in the current context. For an accurate comparison of their domain similarities, specific literature and structural analyses of HSP-70 and HSP-90 should be consulted.