Structure of PDB 2rtg Chain D Binding Site BS01

Receptor Information
>2rtg Chain D (length=121) Species: 1895 (Streptomyces avidinii) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
AEAGITGTWYNQLGSTFIVTAGADGALTGTYESAVGNAESRYVLTGRYDS
APATDGSGTALGWTVAWKNNYRNAHSATTWSGQYVGGAEARINTQWLLTS
GTTEANAWKSTLVGHDTFTKV
Ligand information
Ligand IDBTN
InChIInChI=1S/C10H16N2O3S/c13-8(14)4-2-1-3-7-9-6(5-16-7)11-10(15)12-9/h6-7,9H,1-5H2,(H,13,14)(H2,11,12,15)/t6-,7-,9-/m0/s1
InChIKeyYBJHBAHKTGYVGT-ZKWXMUAHSA-N
SMILES
SoftwareSMILES
CACTVS 3.385OC(=O)CCCC[CH]1SC[CH]2NC(=O)N[CH]12
CACTVS 3.385OC(=O)CCCC[C@@H]1SC[C@@H]2NC(=O)N[C@H]12
ACDLabs 12.01O=C1NC2C(SCC2N1)CCCCC(=O)O
OpenEye OEToolkits 1.7.6C1C2C(C(S1)CCCCC(=O)O)NC(=O)N2
OpenEye OEToolkits 1.7.6C1[C@H]2[C@@H]([C@@H](S1)CCCCC(=O)O)NC(=O)N2
FormulaC10 H16 N2 O3 S
NameBIOTIN
ChEMBLCHEMBL857
DrugBankDB00121
ZINCZINC000035024346
PDB chain2rtg Chain D Residue 301 [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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PDB2rtg Binding of biotin to streptavidin stabilizes intersubunit salt bridges between Asp61 and His87 at low pH.
Resolution1.39 Å
Binding residue
(original residue number in PDB)		L25 S27 Y43 S45 V47 N49 W79 T90 W108 D128
Binding residue
(residue number reindexed from 1)		L13 S15 Y31 S33 V35 N37 W67 T78 W96 D116
Annotation score4
Binding affinityBindingDB: Kd=1.000000nM
Enzymatic activity
Enzyme Commision number ?
Gene Ontology

View graph for
Molecular Function
External links
PDB RCSB:2rtg, PDBe:2rtg, PDBj:2rtg
PDBsum2rtg
PubMed9405158
UniProtP22629|SAV_STRAV Streptavidin

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