+# if ires[0] != 1:
+# ssbond=[ [e[0]-ires[0]+1,e[1]-ires[0]+1] for e in ssbond]
+ i=0
+ for c in chain:
+ unres_shift[c]=i+chain_start[c]
+ i=i-(chain_end[c]-chain_start[c])-3
+ ssbond=[ [e[0]-unres_shift[c[0]]+1,e[1]-unres_shift[c[1]]+1] for e,c in zip(ssbond,ssbond_ch)]
+
+ return seq,json.dumps(ssbond)