▁is ▁grass land ▁( ste ppe ), ▁and ▁ 1 2 % ▁is ▁forest ▁( most ly ▁in ▁rav ines ▁and ▁along ▁rivers ). ▁ ▁Public ▁use ▁As ▁a ▁strict ▁nature ▁reserve , ▁Prov all ia ▁Ste ppe ' s ▁primary ▁purpose ▁is ▁protection ▁of ▁nature ▁and ▁scientific ▁study . ▁ ▁There ▁is ▁no ▁public ▁access , ▁and ▁as ▁of ▁ 2 0 1 4 ▁the ▁site ▁was ▁not ▁under ▁government ▁control . ▁ ▁See ▁also ▁ ▁List s ▁of ▁Nature ▁Pres erves ▁of ▁Ukraine ▁( class ▁I a ▁protected ▁areas ) ▁ ▁National ▁Park s ▁of ▁Ukraine ▁( class ▁II ▁protected ▁areas ) ▁ ▁References ▁ ▁External ▁links ▁ ▁Map ▁of ▁Prov all ia ▁Ste ppe ▁Nature ▁Reserve ▁on ▁Open St reet Map . org ▁ ▁Category : N ature ▁res erves ▁in ▁Ukraine <0x0A> </s> ▁Com plement ▁component ▁ 5 ▁is ▁a ▁protein ▁that ▁in ▁humans ▁is ▁encoded ▁by ▁the ▁C 5 ▁gene . ▁ ▁Com plement ▁component ▁ 5 ▁is ▁involved ▁in ▁the ▁complement ▁system . ▁It ▁is ▁cle aved ▁into ▁C 5 a ▁and ▁C 5 b : ▁ ▁C 5 a ▁plays ▁an ▁important ▁role ▁in ▁chem ot axis . ▁ ▁C 5 b ▁forms ▁the ▁first ▁part ▁of ▁the ▁complement ▁memb rane ▁attack ▁complex . ▁ ▁Def ic iency ▁is ▁thought ▁to ▁cause ▁Le iner ' s ▁disease . ▁ ▁Function ▁▁ ▁Com plement ▁component ▁ 5 ▁is ▁the ▁fifth ▁component ▁of ▁complement , ▁which ▁plays ▁an ▁important ▁role ▁in ▁infl am mat ory ▁and ▁cell ▁killing