▁ch el at ase ▁are ▁known ▁including ▁c ob alt ▁ch el at ase , ▁mag nes ium ▁ch el at ase , ▁and ▁ferro ch el at ase . ▁ ▁Nick el ▁insert ion ▁into ▁a ▁si ro h ydro ch lor in ▁also ▁requires ▁a ▁ch el at ase ▁as ▁part ▁of ▁the ▁b ios yn thesis ▁of ▁c of actor ▁F 4 3 0 . ▁ ▁Appar ently ▁that ▁ch el at ase ▁is ▁identical ▁to ▁the ▁c ob alt ▁ch el at ase . ▁ ▁References ▁ ▁Category : L ig ases ▁Category : Organ omet all ic ▁chem istry <0x0A> </s> ▁J ab al ▁M ana ' ▁() ▁is ▁a ▁large ▁mountain , ▁located ▁in ▁the ▁T ann um ah ▁area ▁of ▁B ani ▁Sh ahr , ▁in ▁the ▁As ir ▁region ▁in ▁the ▁south western ▁of ▁Sa udi ▁Arab ia , ▁with ▁a ▁height ▁of ▁ 2 , 7 8 2 ▁meters ▁( 9 , 1 2 7 ▁feet ). ▁ ▁The ▁mountain ▁has ▁a ▁circum ference ▁at ▁the ▁base ▁estimated ▁at ▁ten ▁kilom eters . ▁There ▁are ▁several ▁pet rog lyph s ▁including ▁ins cri ptions ▁of ▁a ▁s nake ▁and ▁gi ants . ▁The ▁interpretation ▁of ▁the ▁g lyph s ▁is ▁still ▁uncertain . ▁ ▁Near ▁the ▁top ▁of ▁the ▁mountain ▁there ▁is ▁a ▁large ▁cave ▁with ▁ins cri ptions ▁on ▁the ▁ce iling . ▁The ▁cave ▁r ises ▁above ▁a ▁mos que ▁on ▁the ▁hill top . ▁▁ ▁It ▁is ▁considered ▁one ▁of ▁the