3CIX ADOMET BINDING PROTEIN, RADICAL ADOMET PROTEIN, FEFE-HYDROGENASE MATURATION, BETA BARREL, FE4S4 CLUSTER, THIOCYANATE, FE2S2 CLUSTER X-RAY STRUCTURE OF THE [FEFE]-HYDROGENASE MATURASE HYDE FROM THERMOTOGA MARITIMA IN COMPLEX WITH THIOCYANATE