<prompt> tafsiri zifuatazo kutoka kwa swahili hadi kiingereza.protini nyingi hupitia mabadliko mengi ya muundo baada ya kutafsiriwa, wakati makundi ya ziada ya kemikali yanaposhikanishwa na asidi amino katika protini.  <response>: many proteins undergo a range of posttranslational modificationswhen additional chemical groups are attached to the amino acids in proteins. 