▁found ▁in ▁H omo ▁s api ens . ▁ ▁The ▁predicted ▁mole cular ▁weight ▁of ▁is o form ▁A ▁in ▁H omo ▁s api ens ▁is ▁ 1 4 9 . 6 ▁k dal . ▁ ▁Com position ▁ ▁K I AA 1 1 0 7 ▁has ▁a ▁higher ▁frequency ▁of ▁Ser ine ▁and ▁Asp art ate ▁and ▁a ▁lower ▁frequency ▁of ▁Ty ros ine ▁than ▁in ▁the ▁average ▁protein ▁in ▁H omo ▁s api ens . ▁Un character ized ▁protein ▁is ▁composed ▁of ▁ 7 . 5 % ▁Asp art ate ▁and ▁ 1 4 . 0 % ▁Ser ine , ▁which ▁constit utes ▁it ▁as ▁a ▁Ser ine - rich ▁protein . ▁This ▁protein ▁also ▁consists ▁of ▁ 0 . 7 % ▁Ty ros ine , ▁which ▁is ▁considered ▁to ▁be ▁below ▁average ▁in ▁human ▁prote ins . ▁ ▁m R NA ▁ ▁I so forms ▁ ▁Trans cription ▁of ▁K I AA 1 1 0 7 ▁produces ▁ 6 ▁different ▁m R N As , ▁with ▁ 4 ▁altern atively ▁sp lic ed ▁variants ▁and ▁ 2 ▁un sp lic ed ▁forms . ▁Vari ant ▁A ▁is ▁the ▁most ▁commonly ▁occurr ing ▁and ▁longest ▁variant ▁of ▁K I AA 1 1 0 7 ▁in ▁humans . ▁ ▁Vari ant ▁A ▁contains ▁nine ▁ex ons ▁( 1 - 9 ) ▁present ▁in ▁their ▁standard ▁form . ▁Vari ant ▁B ▁contains ▁seven ▁ex ons ▁( 3 - 9 ) ▁present ▁in ▁standard ▁form . ▁Vari ant ▁C - U ▁contains ▁one ▁ex