B73 (CHLORATE RESISTANT 6); molybdenum ion binding. Identical to Molybdopterin biosynthesis protein CNX1 (CNX1) [Arabidopsis Thaliana] (GB:Q39054); similar to molybdenum cofactor biosynthesis protein [Zea mays] (GB:ABB30174.1); similar to molybdenum cofactor biosynthesis protein Cnx1 [Hordeum vulgare] (GB:AAF73075.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO67405.1); contains InterPro domain Molybdopterin binding; (InterPro:IPR001453); contains InterPro domain MoeA, N-terminal, domain I and II (InterPro:IPR005110); contains InterPro domain Molybdenum cofactor biosynthesis, conserved site; (InterPro:IPR008284); contains Int