1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 0000-0002-9386-841X Dang, V.T. 0000-0003-4137-6453 Nguyen, A.I. McElheny, D. http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic 90.00 90.00 90.00 1.000 1.000 1.000 C6 H10 N3 O2 1 156.162 y HISTIDINE L-peptide linking C6 H13 N O2 131.173 y ISOLEUCINE L-peptide linking C5 H12 N2 O2 132.161 n L-ornithine L-peptide linking C9 H11 N O2 165.189 y PHENYLALANINE L-peptide linking C3 H7 N O2 89.093 n SARCOSINE peptide linking C3 H7 N O3 105.093 y SERINE L-peptide linking C11 H12 N2 O2 204.225 y TRYPTOPHAN L-peptide linking N 1 N N N 2 S C N 3 N C N 4 N O N 5 N C Y 6 N C Y 7 N N Y 8 N C Y 9 N C Y 10 N N N 11 N O N 12 N H N 13 N H N 14 N H N 15 N H N 16 N H N 17 N H N 18 N H N 19 N H N 20 N H N 21 N H N 22 N N N 23 S C N 24 N C N 25 N O N 26 S C N 27 N C N 28 N C N 29 N C N 30 N O N 31 N H N 32 N H N 33 N H N 34 N H N 35 N H N 36 N H N 37 N H N 38 N H N 39 N H N 40 N H N 41 N H N 42 N H N 43 N H N 44 N N N 45 S C N 46 N C N 47 N C N 48 N C N 49 N N N 50 N C N 51 N O N 52 N O N 53 N H N 54 N H N 55 N H N 56 N H N 57 N H N 58 N H N 59 N H N 60 N H N 61 N H N 62 N H N 63 N H N 64 N H N 65 N N N 66 S C N 67 N C N 68 N O N 69 N C Y 70 N C Y 71 N C Y 72 N C Y 73 N C Y 74 N C Y 75 N C N 76 N O N 77 N H N 78 N H N 79 N H N 80 N H N 81 N H N 82 N H N 83 N H N 84 N H N 85 N H N 86 N H N 87 N H N 88 N N N 89 N C N 90 N C N 91 N O N 92 N C N 93 N O N 94 N H N 95 N H N 96 N H N 97 N H N 98 N H N 99 N H N 100 N H N 101 N N N 102 S C N 103 N C N 104 N O N 105 N C N 106 N O N 107 N O N 108 N H N 109 N H N 110 N H N 111 N H N 112 N H N 113 N H N 114 N H N 115 N N N 116 S C N 117 N C N 118 N O N 119 N C Y 120 N C Y 121 N C Y 122 N C Y 123 N N Y 124 N C Y 125 N C Y 126 N C Y 127 N C Y 128 N C N 129 N O N 130 N H N 131 N H N 132 N H N 133 N H N 134 N H N 135 N H N 136 N H N 137 N H N 138 N H N 139 N H N 140 N H N 141 N H N 1 N sing N 2 N sing N 3 N sing N 4 N sing N 5 N sing N 6 N sing N 7 N doub N 8 N sing N 9 N sing N 10 N sing N 11 N sing Y 12 N sing Y 13 N doub Y 14 N doub N 15 N sing Y 16 N sing N 17 N sing Y 18 N sing N 19 N sing N 20 N sing N 21 N sing N 22 N sing N 23 N sing N 24 N sing N 25 N sing N 26 N sing N 27 N sing N 28 N doub N 29 N sing N 30 N sing N 31 N sing N 32 N sing N 33 N sing N 34 N sing N 35 N sing N 36 N sing N 37 N sing N 38 N sing N 39 N sing N 40 N sing N 41 N sing N 42 N sing N 43 N sing N 44 N sing N 45 N sing N 46 N sing N 47 N sing N 48 N sing N 49 N sing N 50 N sing N 51 N sing N 52 N sing N 53 N sing N 54 N sing N 55 N sing N 56 N sing N 57 N sing N 58 N sing N 59 N sing N 60 N doub N 61 N sing N 62 N sing N 63 N sing N 64 N sing N 65 N sing N 66 N sing N 67 N sing N 68 N sing N 69 N doub N 70 N sing N 71 N sing N 72 N sing N 73 N sing Y 74 N doub Y 75 N sing Y 76 N sing N 77 N sing Y 78 N doub N 79 N sing Y 80 N doub N 81 N sing Y 82 N sing N 83 N sing N 84 N sing N 85 N sing N 86 N sing N 87 N sing N 88 N sing N 89 N sing N 90 N sing N 91 N sing N 92 N doub N 93 N sing N 94 N sing N 95 N sing N 96 N sing N 97 N sing N 98 N sing N 99 N sing N 100 N sing N 101 N sing N 102 N sing N 103 N sing N 104 N doub N 105 N sing N 106 N sing N 107 N sing N 108 N sing N 109 N sing N 110 N sing N 111 N sing N 112 N sing N 113 N sing N 114 N sing N 115 N sing N 116 N sing N 117 N doub N 118 N sing N 119 N sing N 120 N sing N 121 N sing Y 122 N doub Y 123 N sing Y 124 N sing N 125 N sing Y 126 N doub Y 127 N sing Y 128 N sing N 129 N sing Y 130 N sing Y 131 N doub N 132 N sing Y 133 N doub N 134 N sing Y 135 N sing N 136 N sing N 137 N sing N 138 N sing UK Chem.Commun.(Camb.) 1364-548X 62 2304 2308 10.1039/d5cc06640a 41489626 beta-barrels from short macrocyclic peptides. 2026 10.2210/pdb9q63/pdb pdb_00009q63 10.13018/BMR31265 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 1550.765 MC4H PEPTIDE MACROCYCLE 1 syn polymer no yes FHSH(ORN)FIH(SAR)H(ORN)W FHSHAFIHGHAW A polypeptide(L) n n n n n n n n n n n n citation citation_author citation citation_author repository Initial release Database references Database references 1 0 2026-01-07 1 1 2026-01-14 1 2 2026-02-11 _citation.pdbx_database_id_PubMed _citation.title _citation_author.identifier_ORCID _citation.journal_volume _citation.page_first _citation.page_last _citation_author.identifier_ORCID United States National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) 1R35GM154793-01 andyn@uic.edu 0000-0003-4137-6453 Andy Nguyen I principal investigator/group leader Solid state SC-XRD structure of MC4H tetramer Peptide Macrocycle MC4H N RCSB Y RCSB 2025-08-21 REL REL ORN ORN SUBJECT OF INVESTIGATION SAR SAR SUBJECT OF INVESTIGATION 32630 synthetic construct sample 1 12 Y Y A ORN 5 Named protein modification A ORN 5 ORN 1 1_555 Ornithine A SAR 9 Named protein modification A SAR 9 GLY SAR 1 1_555 Methylation A ORN 11 Named protein modification A ORN 11 ORN 1 1_555 Ornithine A PHE 1 Non-standard linkage N A PHE 1 A TRP 12 C A TRP 12 1_555 1_555 None A HIS 4 Non-standard linkage C A HIS 4 A ORN 5 NE A ORN 5 1_555 1_555 None A HIS 10 Non-standard linkage C A HIS 10 A ORN 11 NE A ORN 11 1_555 1_555 None structures with the lowest energy 100 10 isotropic 1 2D 1H-1H NOESY isotropic 1 2D 1H-1H TOCSY 2.2 mM natural abundance 50 mM natural abundance 2.2 mM Peptide in 0.05 M KPi (Phosphate Buffer) pH 6.8 and 10% D2O at 280 K. 50 mM 2DNMR_Cond_1 6.8 pH 1 atm 280 K molecular dynamics 1 lowest energy 2.2 mM MC4H PEPTIDE MACROCYCLE, 50 mM KPi (Phosphate Buffer) pH 6.8, 90% H2O/10% D2O 2.2 mM Peptide in 0.05 M KPi (Phosphate Buffer) pH 6.8 and 10% D2O at 280 K. 1H 90% H2O/10% D2O solution Case, Darden, Cheatham III, Simmerling, Wang, Duke, Luo, and Kollman refinement Amber Guntert, Mumenthaler and Wuthrich structure calculation CYANA 750 Bruker AVANCE III PHE 1 n 1 PHE 1 A HIS 2 n 2 HIS 2 A SER 3 n 3 SER 3 A HIS 4 n 4 HIS 4 A ORN 5 n 5 ORN 5 A PHE 6 n 6 PHE 6 A ILE 7 n 7 ILE 7 A HIS 8 n 8 HIS 8 A SAR 9 n 9 SAR 9 A HIS 10 n 10 HIS 10 A ORN 11 n 11 ORN 11 A TRP 12 n 12 TRP 12 A author_and_software_defined_assembly 1 monomeric not applicable NMR Distance Restraints 1.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 1.0 1_555 x,y,z identity operation 0.0 0.0 0.0 A N HIS 2 A N HIS 2 A O HIS 8 A O HIS 8 5 A HIS 2 -83.69 46.22 N Peptide Macrocycle MC4H 1 N N covale 1.326 both A PHE 1 A N PHE 1 1_555 A TRP 12 A C TRP 12 1_555 covale 1.337 both A HIS 4 A C HIS 4 1_555 A ORN 5 A NE ORN 5 1_555 covale 1.337 both A ORN 5 A C ORN 5 1_555 A PHE 6 A N PHE 6 1_555 covale 1.350 both A HIS 8 A C HIS 8 1_555 A SAR 9 A N SAR 9 1_555 covale 1.338 both A SAR 9 A C SAR 9 1_555 A HIS 10 A N HIS 10 1_555 covale 1.332 both A HIS 10 A C HIS 10 1_555 A ORN 11 A NE ORN 11 1_555 covale 1.336 both A ORN 11 A C ORN 11 1_555 A TRP 12 A N TRP 12 1_555 DE NOVO PROTEIN CYCLIC PEPTIDE, DE NOVO PROTEIN 9Q63 PDB 1 1 9Q63 1 12 9Q63 1 12 9Q63 A 1 1 12 2 anti-parallel A HIS 2 A HIS 2 A SER 3 A SER 3 A ILE 7 A ILE 7 A HIS 8 A HIS 8 1 P 1