1.   e.51.1        Urocanase    
                   Urocanase 3 domains; d1: alpha+beta [alpha(2)-beta(3); mixed sheet: 213]; d2: alpha/beta of the NAD(P)-binding Rossmann-fold superfamily (scop_sf 51735, most similar to scop_fa 51883 and scop_fa 51736); d3: alpha+beta of the glutamine synthetase/guanido kinase fold (scop_cf 55930); d1 and d3 form a single beta-sheet
                   1uwk  d1uwka_  A:24-39,61-75,77-85,86-96,100-106
                   1w1u  d1w1ua_  A:24-39,61-75,77-85,86-96,100-106
                   1uwl  d1uwla_  A:24-39,61-75,77-85,86-96,100-106
                   1uwl  d1uwlb_  B:24-39,61-75,77-85,86-96,100-106
                   1uwk  d1uwkb_  B:24-39,61-75,77-85,86-96,100-106
                   1w1u  d1w1ub_  B:24-39,61-75,77-85,86-96,100-106
                   1x87  d1x87b_  B:19-34,56-70,72-80,81-91,95-102
                   1x87  d1x87a_  A:19-34,56-70,72-80,81-91,95-104