Structure of PDB 1qhc Chain B Binding Site BS01

Receptor Information
>1qhc Chain B (length=124) Species: 9913 (Bos taurus) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
KETAAAKFERQHMDSSTSAASSSNYCNQMMKSRNLTKDRCKPVNTFVHES
LADVQAVCSQKNVACKNGQTNCYQSYSTMSITDCRETGSSKYPNCAYKTT
QANKHIIVACEGNPYVPVHFDASV
Ligand information
Ligand IDPUA
InChIInChI=1S/C19H27N7O20P4/c20-16-13-17(22-6-21-16)26(7-23-13)18-14(28)15(45-48(33,34)35)10(43-18)5-41-49(36,37)46-50(38,39)44-8-3-12(25-2-1-11(27)24-19(25)29)42-9(8)4-40-47(30,31)32/h1-2,6-10,12,14-15,18,28H,3-5H2,(H,36,37)(H,38,39)(H2,20,21,22)(H,24,27,29)(H2,30,31,32)(H2,33,34,35)/t8-,9+,10+,12+,14+,15+,18+/m0/s1
InChIKeyJIAJERGOUFOENU-LNAOLWRRSA-N
SMILES
SoftwareSMILES
OpenEye OEToolkits 1.5.0c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)CO[P@](=O)(O)O[P@](=O)(O)O[C@H]4C[C@@H](O[C@@H]4COP(=O)(O)O)N5C=CC(=O)NC5=O)OP(=O)(O)O)O)N
CACTVS 3.341Nc1ncnc2n(cnc12)[CH]3O[CH](CO[P](O)(=O)O[P](O)(=O)O[CH]4C[CH](O[CH]4CO[P](O)(O)=O)N5C=CC(=O)NC5=O)[CH](O[P](O)(O)=O)[CH]3O
OpenEye OEToolkits 1.5.0c1nc(c2c(n1)n(cn2)C3C(C(C(O3)COP(=O)(O)OP(=O)(O)OC4CC(OC4COP(=O)(O)O)N5C=CC(=O)NC5=O)OP(=O)(O)O)O)N
CACTVS 3.341Nc1ncnc2n(cnc12)[C@@H]3O[C@H](CO[P@@](O)(=O)O[P@@](O)(=O)O[C@H]4C[C@@H](O[C@@H]4CO[P](O)(O)=O)N5C=CC(=O)NC5=O)[C@@H](O[P](O)(O)=O)[C@H]3O
ACDLabs 10.04O=C1C=CN(C(=O)N1)C5OC(COP(=O)(O)O)C(OP(=O)(O)OP(=O)(O)OCC4OC(n3cnc2c(ncnc23)N)C(O)C4OP(=O)(O)O)C5
FormulaC19 H27 N7 O20 P4
NameADENYLATE-3'-PHOSPHATE-[[2'-DEOXY-URIDINE-5'-PHOSPHATE]-3'-PHOSPHATE];
U-PI-A-PI
ChEMBLCHEMBL401150
DrugBankDB03186
ZINCZINC000095613423
PDB chain1qhc Chain B Residue 902 [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]
PDB1qhc Toward rational design of ribonuclease inhibitors: high-resolution crystal structure of a ribonuclease A complex with a potent 3',5'-pyrophosphate-linked dinucleotide inhibitor.
Resolution1.7 Å
Binding residue
(original residue number in PDB)		K7 Q11 H12 N44 T45 C65 N67 Q69 N71 A109 V118 H119 F120
Binding residue
(residue number reindexed from 1)		K7 Q11 H12 N44 T45 C65 N67 Q69 N71 A109 V118 H119 F120
Annotation score1
Binding affinityMOAD: Ki=27nM
Enzymatic activity
Catalytic site (original residue number in PDB) H12 K41 H119 F120 D121
Catalytic site (residue number reindexed from 1) H12 K41 H119 F120 D121
Enzyme Commision number 4.6.1.18: pancreatic ribonuclease.
Gene Ontology
Molecular Function
GO:0003676 nucleic acid binding
GO:0004519 endonuclease activity
GO:0004522 ribonuclease A activity
GO:0004540 RNA nuclease activity
GO:0005515 protein binding
GO:0016829 lyase activity
Biological Process
GO:0050830 defense response to Gram-positive bacterium
Cellular Component
GO:0005576 extracellular region

View graph for
Molecular Function
View graph for
Biological Process
View graph for
Cellular Component
External links
PDB RCSB:1qhc, PDBe:1qhc, PDBj:1qhc
PDBsum1qhc
PubMed10441122
UniProtP61823|RNAS1_BOVIN Ribonuclease pancreatic (Gene Name=RNASE1)

[Back to BioLiP]