2BOK: Factor Xa - cation

Factor Xa - cation. Determined by X-ray diffraction at 1.64 Å resolution. Released 16 Jun 2005.

Method
X-ray diffraction
Resolution
1.64 Å
Organism
HOMO SAPIENS
Chains
2
Atoms
2,421
Mol. weight
33.66 kDa
Ligands
784
Released
16 Jun 2005

Explore 2BOK in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

2BOK contains 10 α-helices and 25 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: 9 helices, 21 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-strand82-8323
β-strand85-9063
β-strand104-10853
β-strand11514
β-strand11814
α-helix120-1212
β-strand12212
α-helix123-124A3
α-helix125-1273
α-helix128-131A5
β-strand135-14062
β-strand14315
β-strand15115
β-strand156-16382
α-helix165-1717
β-strand180-18342
β-strand18911
β-strand198-20362
β-strand206-215102
β-strand226-23052
α-helix231-2344
α-helix235-2428
Chain L: 1 helix, 4 β-strands
ElementResiduesLengthSheet
α-helix92-954
β-strand99-10136
β-strand108-11036
β-strand115-11737
β-strand124-12637

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
Coagulation factor XAprotein241HOMO SAPIENSP00742 (AlphaFold model)
Coagulation factor XLprotein55HOMO SAPIENSP00742 (AlphaFold model)
Sequence of entity 1 (A), FASTA
>2BOK_1 COAGULATION FACTOR X (chains A)
IVGGQECKDGECPWQALLINEENEGFCGGTILSEFYILTAAHCLYQAKRFKVRVGDRNTE
QEEGGEAVHEVEVVIKHNRFTKETYDFDIAVLRLKTPITFRMNVAPACLPERDWAESTLM
TQKTGIVSGFGRTHEKGEQSTRLKMLEVPYVDRNSCKLSSSFIITQNMFCAGYDTKQEDA
CQGDSGGPHVTRFKDTYFVTGIVSWGEGCARKGKYGIYTKVTAFLKWIDRSMKTRGLPKA
K
Sequence of entity 2 (L), FASTA
>2BOK_2 COAGULATION FACTOR X (chains L)
RKLCSLDNGDCDQFCHEEQNSVVCSCARGYTLADNGKACIPTGPYPCGKQTLERR

Ligands and cofactors

IDNameFormulaCopies
784[amino (4-{(3AS,4R,8AS,8BR)-1,3-dioxo-2- [3-(trimethylammonio)…C22 H32 N5 O21

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

Primary citation

Quantification of Cation-Pi Interactions in Protein-Ligand Complexes: Crystal-Structure Analysis of Factor Xa Bound to a Quaternary Ammonium Ion Ligand. Scharer, K., Morgenthaler, M., Paulini, R. et al. Angew Chem Int Ed Engl (2005) 44:4400. DOI 10.1002/ANIE.200500883 · 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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