1DYH
ISOMORPHOUS CRYSTAL STRUCTURES OF ESCHERICHIA COLI DIHYDROFOLATE REDUCTASE COMPLEXED WITH FOLATE, 5-DEAZAFOLATE AND 5,10-DIDEAZATETRAHYDROFOLATE: MECHANISTIC IMPLICATIONS
Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0004146 | molecular_function | dihydrofolate reductase activity |
| A | 0005515 | molecular_function | protein binding |
| A | 0005542 | molecular_function | folic acid binding |
| A | 0005829 | cellular_component | cytosol |
| A | 0006730 | biological_process | one-carbon metabolic process |
| A | 0009257 | biological_process | 10-formyltetrahydrofolate biosynthetic process |
| A | 0009410 | biological_process | response to xenobiotic stimulus |
| A | 0016491 | molecular_function | oxidoreductase activity |
| A | 0031427 | biological_process | response to methotrexate |
| A | 0044281 | biological_process | small molecule metabolic process |
| A | 0046452 | biological_process | dihydrofolate metabolic process |
| A | 0046654 | biological_process | tetrahydrofolate biosynthetic process |
| A | 0046655 | biological_process | folic acid metabolic process |
| A | 0046656 | biological_process | folic acid biosynthetic process |
| A | 0046677 | biological_process | response to antibiotic |
| A | 0050661 | molecular_function | NADP binding |
| A | 0051870 | molecular_function | methotrexate binding |
| A | 0051871 | molecular_function | dihydrofolic acid binding |
| A | 0070401 | molecular_function | NADP+ binding |
| A | 0070402 | molecular_function | NADPH binding |
| B | 0004146 | molecular_function | dihydrofolate reductase activity |
| B | 0005515 | molecular_function | protein binding |
| B | 0005542 | molecular_function | folic acid binding |
| B | 0005829 | cellular_component | cytosol |
| B | 0006730 | biological_process | one-carbon metabolic process |
| B | 0009257 | biological_process | 10-formyltetrahydrofolate biosynthetic process |
| B | 0009410 | biological_process | response to xenobiotic stimulus |
| B | 0016491 | molecular_function | oxidoreductase activity |
| B | 0031427 | biological_process | response to methotrexate |
| B | 0044281 | biological_process | small molecule metabolic process |
| B | 0046452 | biological_process | dihydrofolate metabolic process |
| B | 0046654 | biological_process | tetrahydrofolate biosynthetic process |
| B | 0046655 | biological_process | folic acid metabolic process |
| B | 0046656 | biological_process | folic acid biosynthetic process |
| B | 0046677 | biological_process | response to antibiotic |
| B | 0050661 | molecular_function | NADP binding |
| B | 0051870 | molecular_function | methotrexate binding |
| B | 0051871 | molecular_function | dihydrofolic acid binding |
| B | 0070401 | molecular_function | NADP+ binding |
| B | 0070402 | molecular_function | NADPH binding |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE CL A 401 |
| Chain | Residue |
| A | GLY43 |
| A | HIS45 |
| A | THR46 |
| A | GLY96 |
| A | HOH468 |
| site_id | AC2 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE CL B 405 |
| Chain | Residue |
| B | GLY43 |
| B | HIS45 |
| B | THR46 |
| B | GLY96 |
| site_id | AC3 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE CA B 420 |
| Chain | Residue |
| A | HOH488 |
| B | SER135 |
| B | HOH461 |
| B | HOH462 |
| B | HOH464 |
| B | HOH476 |
| site_id | AC4 |
| Number of Residues | 17 |
| Details | BINDING SITE FOR RESIDUE DZF A 161 |
| Chain | Residue |
| A | ILE5 |
| A | ALA6 |
| A | ALA7 |
| A | ASP27 |
| A | LEU28 |
| A | PHE31 |
| A | THR46 |
| A | ILE50 |
| A | ARG52 |
| A | ARG57 |
| A | ILE94 |
| A | THR113 |
| A | HOH403 |
| A | HOH405 |
| A | HOH501 |
| A | HOH560 |
| A | HOH566 |
| site_id | AC5 |
| Number of Residues | 18 |
| Details | BINDING SITE FOR RESIDUE DZF B 161 |
| Chain | Residue |
| B | ILE5 |
| B | ALA6 |
| B | ALA7 |
| B | ASP27 |
| B | LEU28 |
| B | PHE31 |
| B | LYS32 |
| B | ILE50 |
| B | ARG52 |
| B | ARG57 |
| B | ILE94 |
| B | TYR100 |
| B | THR113 |
| B | HOH426 |
| B | HOH459 |
| B | HOH518 |
| B | HOH570 |
| B | HOH612 |
Functional Information from PROSITE/UniProt
| site_id | PS00075 |
| Number of Residues | 23 |
| Details | DHFR_1 Dihydrofolate reductase (DHFR) domain signature. VIGmenaMPWnlpa.DlawFkrnT |
| Chain | Residue | Details |
| A | VAL13-THR35 |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 314 |
| Details | Domain: {"description":"DHFR","evidences":[{"source":"PROSITE-ProRule","id":"PRU00660","evidenceCode":"ECO:0000255"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI2 |
| Number of Residues | 10 |
| Details | Binding site: {"evidences":[{"source":"PubMed","id":"9012674","evidenceCode":"ECO:0000305"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI3 |
| Number of Residues | 34 |
| Details | Binding site: {"evidences":[{"source":"PubMed","id":"19374017","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
Catalytic Information from CSA
| site_id | CSA1 |
| Number of Residues | 7 |
| Details | Annotated By Reference To The Literature 1ra2 |
| Chain | Residue | Details |
| A | LEU54 | |
| A | LEU28 | |
| A | PHE31 | |
| A | ASP27 | |
| A | ILE5 | |
| A | MET20 | |
| A | ILE94 |
| site_id | CSA2 |
| Number of Residues | 7 |
| Details | Annotated By Reference To The Literature 1ra2 |
| Chain | Residue | Details |
| B | LEU54 | |
| B | LEU28 | |
| B | PHE31 | |
| B | ASP27 | |
| B | ILE5 | |
| B | MET20 | |
| B | ILE94 |
