Structure of PDB 3tk5 Chain A

Receptor sequence
>3tk5A (length=233) Species: 9606 (Homo sapiens) [Search protein sequence]
IVGGQECKDGECPWQALLINEENEGFCGGTILSEFYILTAAHCLYQAKRF
KVRVGDRNTEQEEGGEAVHEVEVVIKHNRFTKETYDFDIAVLRLKTPITF
RMNVAPACLPERDWAESTLMTQKTGIVSGFGRTHEKGRQSTRLKMLEVPY
VDRNSCKLSSSFIITQNMFCAGYDTKQEDACQGDSGGPHVTRFKDTYFVT
GIVSWGEGCARKGKYGIYTKVTAFLKWIDRSMK
3D structure
PDB3tk5 Zwitter ionic potent durable orally active Factor Xa inhibitor.
ChainA
Resolution2.2 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) H57 D102 Q192 G193 D194 S195 G196
Catalytic site (residue number reindexed from 1) H42 D88 Q182 G183 D184 S185 G186
Enzyme Commision number 3.4.21.6: coagulation factor Xa.
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 CA A Y185 D185A R222 K224 Y173 D174 R211 K214
BS02 CA A D70 N72 Q75 E80 D56 N58 Q61 E66
BS03 D1Q A E97 T98 Y99 F174 D189 A190 V213 W215 G216 E217 G218 C220 G226 I227 Y228 E83 T84 Y85 F162 D179 A180 V203 W205 G206 E207 G208 C209 G216 I217 Y218 BindingDB: IC50=1.3nM
Gene Ontology
Molecular Function
GO:0004252 serine-type endopeptidase activity
Biological Process
GO:0006508 proteolysis

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Molecular Function
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Biological Process
External links
PDB RCSB:3tk5, PDBe:3tk5, PDBj:3tk5
PDBsum3tk5
PubMed
UniProtP00742|FA10_HUMAN Coagulation factor X (Gene Name=F10)

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