Structure of PDB 4lkj Chain A Binding Site BS01

Receptor Information
>4lkj Chain A (length=314) Species: 11320 (Influenza A virus) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
ICLGHHAVSNGTKVNTLTERGVEVVNATETVERTNIPRICSKGKRTVDLG
QCGLLGTITGPPQCDQFLEFSADLIIERREGSDVCYPGKFVNEEALRQIL
RESGGIDKEAMGFTYSGIRTNGATSACRRSGSSFYAEMKWLLSNTDNAAF
PQMTKSYKNTRKSPALIVWGIHHSVSTAEQTKLYGSGNKLVTVGSSNYQQ
SFVPSPGARPQVNGQSGRIDFHWLMLNPNDTVTFSFNGAFIAPDRASFLR
GKSMGIQSGVQVDANCEGDCYHSGGTIISNLPFQNIDSRAVGKCPRYVKQ
RSLLLATGMKNVPE
Ligand information
Ligand IDSIA
InChIInChI=1S/C11H19NO9/c1-4(14)12-7-5(15)2-11(20,10(18)19)21-9(7)8(17)6(16)3-13/h5-9,13,15-17,20H,2-3H2,1H3,(H,12,14)(H,18,19)/t5-,6+,7+,8+,9+,11+/m0/s1
InChIKeySQVRNKJHWKZAKO-YRMXFSIDSA-N
SMILES
SoftwareSMILES
CACTVS 3.341CC(=O)N[CH]1[CH](O)C[C](O)(O[CH]1[CH](O)[CH](O)CO)C(O)=O
OpenEye OEToolkits 1.5.0CC(=O)NC1C(CC(OC1C(C(CO)O)O)(C(=O)O)O)O
OpenEye OEToolkits 1.5.0CC(=O)N[C@@H]1[C@H](C[C@@](O[C@H]1[C@@H]([C@@H](CO)O)O)(C(=O)O)O)O
ACDLabs 10.04O=C(O)C1(O)OC(C(O)C(O)CO)C(NC(=O)C)C(O)C1
CACTVS 3.341CC(=O)N[C@@H]1[C@@H](O)C[C@@](O)(O[C@H]1[C@H](O)[C@H](O)CO)C(O)=O
FormulaC11 H19 N O9
NameN-acetyl-alpha-neuraminic acid;
N-acetylneuraminic acid;
sialic acid;
alpha-sialic acid;
O-SIALIC ACID
ChEMBLCHEMBL1234621
DrugBankDB03721
ZINCZINC000004081651
PDB chain4lkj Chain C Residue 3 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
Global viewLocal viewStructure summary

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PDB4lkj Structures and receptor binding of hemagglutinins from human-infecting H7N9 influenza viruses
Resolution2.798 Å
Binding residue
(original residue number in PDB)		Y88 A125 T126 W142 H174 Q217
Binding residue
(residue number reindexed from 1)		Y86 A123 T124 W140 H172 Q215
Annotation score4
Binding affinityPDBbind-CN: -logKd/Ki=6.70,Kd=0.20uM
Enzymatic activity
Enzyme Commision number ?
Gene Ontology
Molecular Function
GO:0046789 host cell surface receptor binding
Biological Process
GO:0019062 virion attachment to host cell
GO:0019064 fusion of virus membrane with host plasma membrane
GO:0039654 fusion of virus membrane with host endosome membrane
GO:0046718 symbiont entry into host cell
GO:0075512 clathrin-dependent endocytosis of virus by host cell
Cellular Component
GO:0005886 plasma membrane
GO:0016020 membrane
GO:0016324 apical plasma membrane
GO:0019031 viral envelope
GO:0020002 host cell plasma membrane

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:4lkj, PDBe:4lkj, PDBj:4lkj
PDBsum4lkj
PubMed24009358
UniProtV5IRV5

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