if there is a novel protein, how would you know the amino acid sequence and how would you determine the number of subunits and the function of that protein?

Specifically what molecular techniques we can use to identify the novel protein?

Basically, this is a question asked during a biochemistry interview? It will be helpful, if someone just clarify it

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    $\begingroup$ What do you know about the protein? $\endgroup$ – canadianer Mar 26 '20 at 17:27
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    $\begingroup$ This is very broad and sounds like a homework question. In any case you should show what attempts you have made to find an answer yourself. $\endgroup$ – David Mar 26 '20 at 22:19