RESIDUE 1KH 27 CONECT O5 2 C4 H1 CONECT C4 4 O5 O4 C3 H14 CONECT O4 2 C4 H2 CONECT C3 4 C4 O3 C2 H3 CONECT O3 2 C3 H4 CONECT C2 4 C3 O2 C1 H5 CONECT O2 2 C2 H6 CONECT C1 4 C2 O1 C1P H7 CONECT O1 2 C1 H8 CONECT C1P 4 C1 AS H9 H10 CONECT AS 4 C1P O2P O4P O3P CONECT O2P 1 AS CONECT O4P 2 AS H12 CONECT O3P 2 AS H13 CONECT H1 1 O5 CONECT H2 1 O4 CONECT H3 1 C3 CONECT H4 1 O3 CONECT H5 1 C2 CONECT H6 1 O2 CONECT H7 1 C1 CONECT H8 1 O1 CONECT H9 1 C1P CONECT H10 1 C1P CONECT H12 1 O4P CONECT H13 1 O3P CONECT H14 1 C4 END HET 1KH 27 HETNAM 1KH arsenoribose FORMUL 1KH C5 H13 As1 O8