ðiːz tˈuː pɹˈoʊtiːnz ʃˈɛɹ mˈʌtʃ ʌv ðɛɹ fˈɪzɪkəl stɹˈʌktʃɚ bˌʌt kəntˈeɪn lˈɛs ðɐn hˈæf ʌvðə sˈeɪm ɐmˈiːnoʊ ˈæsɪd sˈiːkwəns ænd ðˈɛɹfoːɹ vˈɛɹi ɪn fˈʌŋkʃən dɹˈæstɪkli.
These two proteins share much of their physical structure but contain less than half of the same amino acid sequence and therefore vary in function drastically.