Spangles form when this metal solidifies from its molten state in one use.
This element is used in a reaction which produces beta hydroxy esters from a ketone and a beta bromo-ester, and one structure containing this element, along with a helix-turn-helix, forms a common DNA binding domain. This element is bonded to three imidazole rings in the active site of a certain enzyme. Spangles form when this metal solidifies from its molten state in one use. This metal's most common ore is sphalarite, and it is used as a catalyst in the Reformatsky reaction. This element is used in the hot dip method of a certain process in which it is used to coat iron. For 10 points, name this element that galvanizes steel, which has atomic number 30 and symbol Zn.
This element is used in a reaction which produces beta hydroxy esters from a ketone and a beta bromo-ester, and one structure containing this element, along with a helix-turn-helix, forms a common DNA binding domain.
zinc [accept Zn]