RESIDUE PRO 18 CONECT N 4 CA CD HT1 HT2 CONECT CA 4 N C CB HA CONECT C 3 CA O OXT CONECT O 1 C CONECT CB 4 CA CG 1HB 2HB CONECT CG 4 CB CD 1HG 2HG CONECT CD 4 N CG 1HD 2HD CONECT OXT 2 C HXT CONECT HT1 1 N CONECT HT2 1 N CONECT HA 1 CA CONECT 1HB 1 CB CONECT 2HB 1 CB CONECT 1HG 1 CG CONECT 2HG 1 CG CONECT 1HD 1 CD CONECT 2HD 1 CD CONECT HXT 1 OXT END HET PRO 18 HETNAM PRO PROLINE FORMUL PRO C5 H10 N1 O2