Structure of PDB 1qhr Chain B

Receptor sequence
>1qhrB (length=259) Species: 9606 (Homo sapiens) [Search protein sequence]
IVEGSDAEIGMSPWQVMLFRKSPQELLCGASLISDRWVLTAAHCLLYPPW
DKNFTENDLLVRIGKHSRTRYERNIEKISMLEKIYIHPRYNWRENLDRDI
ALMKLKKPVAFSDYIHPVCLPDRETAASLLQAGYKGRVTGWGNLKETWTA
NVGKGQPSVLQVVNLPIVERPVCKDSTRIRITDNMFCAGYKPDEGKRGDA
CEGDSGGPFVMKSPFNNRWYQMGIVSWGEGCDRDGKYGFYTHVFRLKKWI
QKVIDQFGE
3D structure
PDB1qhr Crystal structures of thrombin complexed to a novel series of synthetic inhibitors containing a 5,5-trans-lactone template.
ChainB
Resolution2.2 Å
3D
structure
Catalytic site residues are labeled in the structure
[Spin on]
[Spin off]
[Reset orientation]

[High quality]
[Low quality]

[White background]
[Black background]

[Download]
[Download structure with residue number starting from 1]
Enzymatic activity
Catalytic site (original residue number in PDB) H57 D102 E192 G193 D194 S195 G196
Catalytic site (residue number reindexed from 1) H43 D99 E202 G203 D204 S205 G206
Enzyme Commision number 3.4.21.5: thrombin.
Interaction with ligand
Site
#		 Ligand Ligand
chain		 Binding residues on receptor
(original residue number in PDB)		 Binding residues on receptor
(residue number reindexed from 1)		 Binding affinity
BS01 peptide B F34 K36 L65 R73 T74 Y76 K81 I82 M84 F19 K21 L60 R68 T69 Y71 K77 I78 M80
BS02 157 B H57 W60D W148 D189 A190 C191 E192 G193 S195 V213 G216 H43 W50 W148 D199 A200 C201 E202 G203 S205 V225 G228 PDBbind-CN: -logKd/Ki=6.89,IC50=130nM
BindingDB: IC50=130nM
Gene Ontology
Molecular Function
GO:0004252 serine-type endopeptidase activity
GO:0005509 calcium ion binding
Biological Process
GO:0006508 proteolysis
GO:0007596 blood coagulation

View graph for
Molecular Function
View graph for
Biological Process
External links
PDB RCSB:1qhr, PDBe:1qhr, PDBj:1qhr
PDBsum1qhr
PubMed10387040
UniProtP00734|THRB_HUMAN Prothrombin (Gene Name=F2)

[Back to BioLiP]