3KL6: Coagulation Factor X heavy chain

Discovery of Tetrahydropyrimidin-2(1H)-one derivative TAK-442: A potent, selective and orally active factor Xa inhibitor. Determined by X-ray diffraction at 1.45 Å resolution. Released 1 Dec 2009.

Method
X-ray diffraction
Resolution
1.45 Å
Organism
Homo sapiens
Chains
2
Atoms
2,458
Mol. weight
34.24 kDa
Ligands
443, CA
Released
1 Dec 2009

Explore 3KL6 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

3KL6 contains 13 α-helices and 27 β-strands across 2 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 12 helices, 23 β-strands

ElementResiduesLengthSheet
β-strand1711
β-strand20-2122
α-helix22-232
β-strand30-3453
β-strand40-4673
β-strand51-5443
α-helix56-605
β-strand65-6843
β-strand7214
β-strand81-8333
β-strand85-9063
β-strand104-10853
β-strand11515
β-strand11815
α-helix120-1212
β-strand12212
α-helix123-124A2
α-helix125-1273
α-helix128-131A5
β-strand135-14062
β-strand14316
α-helix149-1502
β-strand15116
α-helix1521
β-strand15414
β-strand156-16272
α-helix165-1706
α-helix175-1773
β-strand180-18342
β-strand18911
β-strand198-20362
β-strand206-215102
β-strand226-23052
α-helix231-2344
α-helix235-2417
Chain B: 1 helix, 4 β-strands
ElementResiduesLengthSheet
α-helix4-74
β-strand11-1557
β-strand18-2257
β-strand27-2938
β-strand36-3838

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
Coagulation Factor X heavy chainAprotein241Homo sapiensP00742 (AlphaFold model)
Coagulation Factor X light chainBprotein57Homo sapiensP00742 (AlphaFold model)
Sequence of entity 1 (A), FASTA
>3KL6_1 Coagulation Factor X heavy chain (chains A)
IVGGQECKDGECPWQALLINEENEGFCGGTILSEFYILTAAHCLYQAKRFKVRVGDRNTE
QEEGGEAVHEVEVVIKHNRFTKETYDFDIAVLRLKTPITFRMNVAPACLPERDWAESTLM
TQKTGIVSGFGRTHEKGRQSTRLKMLEVPYVDRNSCKLSSSFIITQNMFCAGYDTKQEDA
CQGDSGGPHVTRFKDTYFVTGIVSWGEGCARKGKYGIYTKVTAFLKWIDRSMKTRGLPKA
K
Sequence of entity 2 (B), FASTA
>3KL6_2 Coagulation Factor X light chain (chains B)
GRARKLCSLDNGDCDQFCHEEQNSVVCSCARGYTLADNGKACIPTGPYPCGKQTLER

Ligands and cofactors

IDNameFormulaCopies
4431-(1-{(2S)-3-[(6-chloronaphthalen-2-yl)sulfonyl]-2-hydroxypropanoyl}piperidin-4…C22 H26 Cl N3 O5 S1
CACalcium ionCa3

Water and common crystallization additives (EDO) are not listed.

Primary citation

Discovery of a tetrahydropyrimidin-2(1H)-one derivative (TAK-442) as a potent, selective, and orally active factor Xa inhibitor. Fujimoto, T., Imaeda, Y., Konishi, N. et al. J Med Chem (2010) 53:3517-3531. DOI 10.1021/jm901699j · PubMed

Other PDB entries of the same protein (UniProt P00742 (AlphaFold model), which also has an AlphaFold model), best resolution first:

Browse structure collections

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