1N4D - Sequence, Chains, Asymmetric and Biological Units

• Title: THE LIGAND-FREE STRUCTURE OF E COLI BTUF, THE PERIPLASMIC BINDING PROTEIN FOR VITAMIN B12
• Keywords: ABC TRANSPORTER, VITAMIN B12, PERIPLASMIC BINDING PROTEIN, TRANSMEMBRANE TRANSPORT, TRANSPORT PROTEIN
• Experiment: X-ray diffraction
• Number of Models: 1

Database	ID code	Status	Coordinate files
			Header	Asymmetric unit	Biological unit
PDB	1N4D	released	available	available	Quaternary Structure Server

Asymmetric unit from PDB

Unit	Type	Name	Chain ID	Residues	Atoms	Hetatoms
1	Protein	VITAMIN B12 TRANSPORT PROTEIN BTUF	A	244	1886	16
2	Protein	VITAMIN B12 TRANSPORT PROTEIN BTUF	B	227	1743	16
total				471	3629	32

Proteins

Unit 1

ALA 1 PRO 2 ARG 3 VAL 4 ILE 5 THR 6 LEU 7 SER 8 PRO 9 ALA 10 ASN 11 THR 12 GLU 13 LEU 14 ALA 15 PHE 16 ALA 17 ALA 18 GLY 19 ILE 20 THR 21 PRO 22 VAL 23 GLY 24 VAL 25 SER 26 SER 27 TYR 28 SER 29 ASP 30 TYR 31 PRO 32 PRO 33 GLN 34 ALA 35 GLN 36 LYS 37 ILE 38 GLU 39 GLN 40 VAL 41 SER 42 THR 43 TRP 44 GLN 45 GLY 46 MSE 47 ASN 48 LEU 49 GLU 50 ARG 51 ILE 52 VAL 53 ALA 54 LEU 55 LYS 56 PRO 57 ASP 58 LEU 59 VAL 60 ILE 61 ALA 62 TRP 63 ARG 64 GLY 65 GLY 66 ASN 67 ALA 68 GLU 69 ARG 70 GLN 71 VAL 72 ASP 73 GLN 74 LEU 75 ALA 76 SER 77 LEU 78 GLY 79 ILE 80 LYS 81 VAL 82 MSE 83 TRP 84 VAL 85 ASP 86 ALA 87 THR 88 SER 89 ILE 90 GLU 91 GLN 92 ILE 93 ALA 94 ASN 95 ALA 96 LEU 97 ARG 98 GLN 99 LEU 100 ALA 101 PRO 102 TRP 103 SER 104 PRO 105 GLN 106 PRO 107 ASP 108 LYS 109 ALA 110 GLU 111 GLN 112 ALA 113 ALA 114 GLN 115 SER 116 LEU 117 LEU 118 ASP 119 GLN 120 TYR 121 ALA 122 GLN 123 LEU 124 LYS 125 ALA 126 GLN 127 TYR 128 ALA 129 ASP 130 LYS 131 PRO 132 LYS 133 LYS 134 ARG 135 VAL 136 PHE 137 LEU 138 GLN 139 PHE 140 GLY 141 ILE 142 ASN 143 PRO 144 PRO 145 PHE 146 THR 147 SER 148 GLY 149 LYS 150 GLU 151 SER 152 ILE 153 GLN 154 ASN 155 GLN 156 VAL 157 LEU 158 GLU 159 VAL 160 CYS 161 GLY 162 GLY 163 GLU 164 ASN 165 ILE 166 PHE 167 LYS 168 ASP 169 SER 170 ARG 171 VAL 172 PRO 173 TRP 174 PRO 175 GLN 176 VAL 177 SER 178 ARG 179 GLU 180 GLN 181 VAL 182 LEU 183 ALA 184 ARG 185 SER 186 PRO 187 GLN 188 ALA 189 ILE 190 VAL 191 ILE 192 THR 193 GLY 194 GLY 195 PRO 196 ASP 197 GLN 198 ILE 199 PRO 200 LYS 201 ILE 202 LYS 203 GLN 204 TYR 205 TRP 206 GLY 207 GLU 208 GLN 209 LEU 210 LYS 211 ILE 212 PRO 213 VAL 214 ILE 215 PRO 216 LEU 217 THR 218 SER 219 ASP 220 TRP 221 PHE 222 GLU 223 ARG 224 ALA 225 SER 226 PRO 227 ARG 228 ILE 229 ILE 230 LEU 231 ALA 232 ALA 233 GLN 234 GLN 235 LEU 236 CYS 237 ASN 238 ALA 239 LEU 240 SER 241 GLN 242 VAL 243 ASP 244

Unit 2

ALA 1001 PRO 1002 ARG 1003 VAL 1004 ILE 1005 THR 1006 LEU 1007 SER 1008 PRO 1009 ALA 1010 ASN 1011 THR 1012 GLU 1013 LEU 1014 ALA 1015 PHE 1016 ALA 1017 ALA 1018 GLY 1019 ILE 1020 THR 1021 PRO 1022 VAL 1023 GLY 1024 VAL 1025 SER 1026 SER 1027 TYR 1028 SER 1029 ASP 1030 TYR 1031 PRO 1032 PRO 1033 GLN 1034 ALA 1035 GLN 1036 LYS 1037 ILE 1038 GLU 1039 GLN 1040 VAL 1041 SER 1042 THR 1043 TRP 1044 GLN 1045 GLY 1046 MSE 1047 ASN 1048 LEU 1049 GLU 1050 ARG 1051 ILE 1052 VAL 1053 ALA 1054 LEU 1055 LYS 1056 PRO 1057 ASP 1058 LEU 1059 VAL 1060 ILE 1061 ALA 1062 TRP 1063 ARG 1064 GLY 1065 GLY 1066 ASN 1067 ALA 1068 GLU 1069 ARG 1070 GLN 1071 VAL 1072 ASP 1073 GLN 1074 LEU 1075 ALA 1076 SER 1077 LEU 1078 GLY 1079 ILE 1080 LYS 1081 VAL 1082 MSE 1083 TRP 1084 VAL 1085 ASP 1086 ALA 1087 THR 1088 SER 1089 ILE 1090 GLU 1091 GLN 1092 ILE 1093 ALA 1094 ASN 1095 ALA 1096 LEU 1097 ARG 1098 GLN 1099 LEU 1100 ALA 1101 PRO 1102 TRP 1103 SER 1104 PRO 1105 GLN 1106 PRO 1107 ASP 1108 LYS 1109 ALA 1110 GLU 1111 GLN 1112 ALA 1113 ALA 1114 GLN 1115 SER 1116 LEU 1117 LEU 1118 ASP 1119 GLN 1120 TYR 1121 ALA 1122 GLN 1123 LEU 1124 LYS 1125 ALA 1126 GLN 1127 TYR 1128 ALA 1129 ASP 1130 LYS 1131 PRO 1132 LYS 1133 LYS 1134 ARG 1135 VAL 1136 PHE 1137 LEU 1138 GLN 1139 PHE 1140 GLY 1141 ILE 1142 ASN 1143 PRO 1144 PRO 1145 PHE 1146 THR 1147 SER 1148 GLY 1149 LYS 1150 GLU 1151 SER 1152 ILE 1153 GLN 1154 ASN 1155 GLN 1156 VAL 1157 LEU 1158 GLU 1159 VAL 1160 CYS 1161 GLY 1162 GLY 1163 GLU 1164 ASN 1165 ILE 1166 PHE 1167 LYS 1168 ASP 1169 SER 1170 ARG 1171 VAL 1172 PRO 1173 TRP 1174 PRO 1175 GLN 1176 VAL 1177 SER 1178 ARG 1179 GLU 1180 GLN 1181 VAL 1182 LEU 1183 ALA 1184 ARG 1185 SER 1186 PRO 1187 GLN 1188 ALA 1189 ILE 1190 VAL 1191 ILE 1192 THR 1193 GLY 1194 ILE 1212 PRO 1213 VAL 1214 ILE 1215 PRO 1216 LEU 1217 THR 1218 SER 1219 ASP 1220 TRP 1221 PHE 1222 GLU 1223 ARG 1224 ALA 1225 SER 1226 PRO 1227 ARG 1228 ILE 1229 ILE 1230 LEU 1231 ALA 1232 ALA 1233 GLN 1234 GLN 1235 LEU 1236 CYS 1237 ASN 1238 ALA 1239 LEU 1240 SER 1241 GLN 1242 VAL 1243 ASP 1244