Structure of PDB 1ohk Chain A Binding Site BS02

Receptor Information
>1ohk Chain A (length=186) Species: 9606 (Homo sapiens) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
VGSLNCIVAVSQNMGIGKNGDLPWPPLRNEFRYFQRMTTTSSVEGKQNLV
IMGKKTWFSIPEKNRPLKGRINLVLSRELKEPPQGAHFLSRSLDDALKLT
EQPELANKVDMVWIVGGSSVYKEAMNHPGHLKLFVTRIMQDFESDTFFPE
IDLEKYKLLPEYPGVLSDVQEEKGIKYKFEVYEKND
Ligand information
Ligand IDCOP
InChIInChI=1S/C27H27N9O6/c28-21-20-22(36-27(29)35-21)32-13-16(33-20)12-31-15-9-7-14(8-10-15)23(37)34-19(26(41)42)6-3-11-30-24(38)17-4-1-2-5-18(17)25(39)40/h1-2,4-5,7-10,13,19,31H,3,6,11-12H2,(H,30,38)(H,34,37)(H,39,40)(H,41,42)(H4,28,29,32,35,36)/t19-/m0/s1
InChIKeyNYQPLPNEESYGNO-IBGZPJMESA-N
SMILES
SoftwareSMILES
CACTVS 3.341Nc1nc(N)c2nc(CNc3ccc(cc3)C(=O)N[CH](CCCNC(=O)c4ccccc4C(O)=O)C(O)=O)cnc2n1
OpenEye OEToolkits 1.5.0c1ccc(c(c1)C(=O)NCCCC(C(=O)O)NC(=O)c2ccc(cc2)NCc3cnc4c(n3)c(nc(n4)N)N)C(=O)O
OpenEye OEToolkits 1.5.0c1ccc(c(c1)C(=O)NCCC[C@@H](C(=O)O)NC(=O)c2ccc(cc2)NCc3cnc4c(n3)c(nc(n4)N)N)C(=O)O
CACTVS 3.341Nc1nc(N)c2nc(CNc3ccc(cc3)C(=O)N[C@@H](CCCNC(=O)c4ccccc4C(O)=O)C(O)=O)cnc2n1
ACDLabs 10.04O=C(O)c1ccccc1C(=O)NCCCC(C(=O)O)NC(=O)c2ccc(cc2)NCc3nc4c(nc3)nc(nc4N)N
FormulaC27 H27 N9 O6
NameN-(4-CARBOXY-4-{4-[(2,4-DIAMINO-PTERIDIN-6-YLMETHYL)-AMINO]-BENZOYLAMINO}-BUTYL)-PHTHALAMIC ACID;
PT523
ChEMBLCHEMBL590985
DrugBankDB06178
ZINCZINC000003807186
PDB chain1ohk Chain A Residue 188 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
Global viewLocal viewStructure summary

[Spin on] [Spin off] [Reset]
[High quality] [Low quality]
[White background] [Black background]
[Spin on] [Spin off] [Reset]
[High quality] [Low quality]
[White background] [Black background]
PDB1ohk Comparison of two independent crystal structures of human dihydrofolate reductase ternary complexes reduced with nicotinamide adenine dinucleotide phosphate and the very tight-binding inhibitor PT523.
Resolution2.5 Å
Binding residue
(original residue number in PDB)		I7 V8 L22 R28 E30 F31 R32 F34 R70 V115
Binding residue
(residue number reindexed from 1)		I7 V8 L22 R28 E30 F31 R32 F34 R70 V115
Annotation score1
Binding affinityBindingDB: IC50=12nM,Ki=0.350000nM
Enzymatic activity
Catalytic site (original residue number in PDB) L22 E30
Catalytic site (residue number reindexed from 1) L22 E30
Enzyme Commision number 1.5.1.3: dihydrofolate reductase.
Gene Ontology
Molecular Function
GO:0000900 mRNA regulatory element binding translation repressor activity
GO:0003723 RNA binding
GO:0003729 mRNA binding
GO:0004146 dihydrofolate reductase activity
GO:0005542 folic acid binding
GO:0016491 oxidoreductase activity
GO:0050661 NADP binding
GO:0070402 NADPH binding
GO:1990825 sequence-specific mRNA binding
Biological Process
GO:0006729 tetrahydrobiopterin biosynthetic process
GO:0006730 one-carbon metabolic process
GO:0017148 negative regulation of translation
GO:0031103 axon regeneration
GO:0031427 response to methotrexate
GO:0046452 dihydrofolate metabolic process
GO:0046653 tetrahydrofolate metabolic process
GO:0046654 tetrahydrofolate biosynthetic process
GO:0046655 folic acid metabolic process
GO:0051000 positive regulation of nitric-oxide synthase activity
GO:2000121 regulation of removal of superoxide radicals
Cellular Component
GO:0005737 cytoplasm
GO:0005739 mitochondrion
GO:0005829 cytosol

View graph for
Molecular Function
View graph for
Biological Process
View graph for
Cellular Component
External links
PDB RCSB:1ohk, PDBe:1ohk, PDBj:1ohk
PDBsum1ohk
PubMed9374868
UniProtP00374|DYR_HUMAN Dihydrofolate reductase (Gene Name=DHFR)

[Back to BioLiP]