amide backbone:H :H1 :H2 :H3 : ACE 3 CH3 C O 1 5 1 2 3 HT1 HT2 HT3 AME 3 N H CA 1 5 3 2 1 HT1 HT2 HT3 ALA 5 CA N C O CB 2 12 1 2 3 5 HA 5 5 1 2 HB1 HB2 HB3 ARG 11 CA N C O CB CG CD NE CZ NH1 NH2 7 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 2 6 5 7 HG3 HG2 2 7 6 8 HD3 HD2 8 8 7 9 HE 9 10 9 8 11 HH11 HH12 9 11 9 8 10 HH21 HH22 ASN 8 CA N C O CB CG OD1 ND2 3 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 9 8 6 5 7 HD22 HD21 ASP 8 CA N C O CB CG OD1 OD2 2 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 CYH 9 CA N C O CB SG SG2 CB2 CA2 4 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 2 8 7 9 ? ? 5 9 8 7 ? ? CYS 6 CA N C O CB SG 2 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 GLN 9 CA N C O CB CG CD OE1 NE2 4 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 2 6 5 7 HG3 HG2 9 9 7 6 8 HE22 HE21 GLU 9 CA N C O CB CG CD OE1 OE2 3 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 2 6 5 7 HG3 HG2 GLY 4 CA N C O 1 11 1 2 3 HA3 HA2 HEM 44 CHA C1A C2A CAA CBA CGA C3A CMA C4A CHB C1B C2B CMB C3B CAB CBB C4B CHC C1C C2C CMC C3C CAC CBC C4C CHD C1D C2D CMD C3D CAD CBD CGD C4D CA N C O CB CG ND1 CE1 NE2 CD2 21 1 1 2 34 HGM 2 4 3 5 HP72 HP71 2 5 4 6 HP73 HP74 6 8 7 3 9 HM81 HM83 HM82 1 10 9 11 HDM 6 13 12 11 14 HM11 HM13 HM12 1 15 14 16 HV2A 4 16 15 14 12 HV2T HV2C 1 18 17 19 HAM 6 21 20 19 22 HM31 HM33 HM32 1 23 22 24 HV4A 4 24 23 22 20 HV4T HV4C 1 26 25 27 HBM 6 29 28 27 30 HM51 HM53 HM52 2 31 30 32 HP62 HP61 2 32 31 33 HP64 HP63 12 35 36 37 39 HA 2 39 35 40 HB3 HB2 8 41 40 42 HD1 1 42 41 43 HE1 1 44 43 40 HD2 HID 10 CA N C O CB CG ND1 CE1 NE2 CD2 5 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 8 7 6 8 HD1 1 8 7 9 HE1 1 10 9 6 HD2 HIE 10 CA N C O CB CG ND1 CE1 NE2 CD2 5 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 1 8 7 9 HE1 8 9 8 10 HE2 1 10 9 6 HD2 HIP 10 CA N C O CB CG ND1 CE1 NE2 CD2 6 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 8 7 6 8 HD1 1 8 7 9 HE1 8 9 8 10 HE2 1 10 9 6 HD2 HIC 11 CA N C O CB CG ND1 CU CE1 NE2 CD2 5 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 1 9 7 10 ? 8 10 9 11 ? 1 11 10 6 ? HIS 10 CA N C O CB CG ND1 CE1 NE2 CD2 5 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 8 7 6 8 HD1 1 8 7 9 HE1 1 10 9 6 HD2 ILE 8 CA N C O CB CG2 CG1 CD1 5 12 1 2 3 5 HA 3 5 1 6 7 HB 5 6 5 1 HG21 HG22 HG23 2 7 5 8 HG13 HG12 5 8 7 5 HD11 HD12 HD13 LEU 8 CA N C O CB CG CD1 CD2 5 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 3 6 5 7 8 HG 5 7 6 5 HD11 HD12 HD13 5 8 6 5 HD21 HD22 HD23 LYS 9 CA N C O CB CG CD CE NZ 6 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 2 6 5 7 HG3 HG2 2 7 6 8 HD3 HD2 2 8 7 9 HE3 HE2 10 9 8 7 HZ1 HZ2 HZ3 MET 8 CA N C O CB CG SD CE 4 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 2 6 5 7 HG3 HG2 5 8 7 6 HE1 HE2 HE3 MTX 33 CA N CT O1 O2 CB CG CD OE1 OE2 C O C11 C12 C13 C14 C15 C16 N10 CM C9 C6 N5 C4A C4 NA4 N3 C2 NA2 N1 C8A N8 C7 13 12 1 2 3 6 2 6 1 7 2 7 6 8 1 14 13 15 1 15 14 16 1 17 16 18 1 18 13 17 5 20 19 16 2 21 19 22 9 26 25 24 9 29 28 27 8 30 28 31 1 33 22 32 PHE 11 CA N C O CB CG CD1 CE1 CZ CE2 CD2 7 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 1 7 6 8 HD1 1 8 7 9 HE1 1 9 8 10 HZ 1 10 9 11 HE2 1 11 10 6 HD2 PRO 7 CA N C O CB CG CD 4 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 2 6 5 7 HG3 HG2 2 7 6 2 HD3 HD2 SER 6 CA N C O CB OG 3 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 7 6 5 1 HG THR 7 CA N C O CB CG2 OG1 4 12 1 2 3 5 HA 3 5 1 6 7 HB 5 6 5 1 HG21 HG22 HG23 7 7 5 1 HG1 TRP 14 CA N C O CB CG CD1 NE1 CE2 CZ2 CH2 CZ3 CE3 CD2 8 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 1 7 6 8 HD1 8 8 7 9 HE1 1 10 9 11 HZ2 1 11 10 12 HH2 1 12 11 13 HZ3 1 13 12 14 HE3 TYR 12 CA N C O CB CG CD1 CE1 CZ CE2 CD2 OH 7 12 1 2 3 5 HA 2 5 1 6 HB3 HB2 1 7 6 8 HD1 1 8 7 9 HE1 1 10 9 11 HE2 1 11 10 6 HD2 7 12 9 8 HH VAL 7 CA N C O CB CG1 CG2 4 12 1 2 3 5 HA 3 5 1 6 7 HB 5 6 5 1 HG11 HG12 HG13 5 7 5 1 HG21 HG22 HG23 GUA 22 P O1P O2P O3' O5' C1' C2' C3' C4' C5' O4' N2 O6 C6 C5 N7 C8 N9 C4 N3 C2 N1 8 12 9 10 8 11 H4' 2 10 9 5 H5'1 H5'2 12 8 7 9 4 H3' 2 7 6 8 H2'1 H2'2 12 6 7 11 18 H1' 1 17 16 18 H8 8 22 21 14 H1 9 12 21 22 20 H21 H22 ADE 21 P O1P O2P O3' O5' C1' C2' C3' C4' C5' O4' N6 C6 C5 N7 C8 N9 C4 N3 C2 N1 8 12 9 10 8 11 H4' 2 10 9 5 H5'1 H5'2 12 8 7 9 4 H3' 2 7 6 8 H2'1 H2'2 12 6 7 11 17 H1' 1 16 15 17 H8 1 20 19 21 H2 9 12 13 21 14 H61 H62 CYT 19 P O1P O2P O3' O5' C1' C2' C3' C4' C5' O4' N4 C4 N3 C2 O2 N1 C6 C5 8 12 9 10 8 11 H4' 2 10 9 5 H5'1 H5'2 12 8 7 9 4 H3' 2 7 6 8 H2'1 H2'2 12 6 7 11 17 H1' 1 18 17 19 H6 1 19 18 13 H5 9 12 13 14 19 H41 H42 THY 20 P O1P O2P O3' O5' C1' C2' C3' C4' C5' O4' O4 C4 N3 C2 O2 N1 C6 C5 C7 8 12 9 10 8 11 H4' 2 10 9 5 H5'1 H5'2 12 8 7 9 4 H3' 2 7 6 8 H2'1 H2'2 12 6 7 11 17 H1' 1 18 17 19 H6 8 14 15 13 H3 6 20 19 18 13 H71 H72 H73