7JUX: KSR1:MEK1

Crystal Structure of KSR1:MEK1 in complex with AMP-PNP, and allosteric MEK inhibitor Trametinib. Determined by X-ray diffraction at 3.34 Å resolution. Released 30 Sept 2020.

Method
X-ray diffraction
Resolution
3.34 Å
Organisms
Homo sapiens, Oryctolagus cuniculus
Chains
2
Atoms
4,768
Mol. weight
83.37 kDa
Ligands
QOM, MG, ANP
Released
30 Sept 2020

Explore 7JUX in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

7JUX contains 37 α-helices and 21 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: 17 helices, 10 β-strands

ElementResiduesLengthSheet
α-helix603-6053
β-strand614-62181
β-strand626-63161
β-strand635-64281
α-helix650-66213
β-strand66912
β-strand672-67871
β-strand681-68771
α-helix688-6903
β-strand692-69322
α-helix694-6985
α-helix707-72620
α-helix736-7383
β-strand739-74242
β-strand745-74842
α-helix753-7553
β-strand769-77243
α-helix773-7764
α-helix781-7866
α-helix793-7953
α-helix800-81617
α-helix826-83510
α-helix837-8459
α-helix850-85910
α-helix864-8663
α-helix868-8692
α-helix870-8789
Chain C: 20 helices, 11 β-strands
ElementResiduesLengthSheet
α-helix44-5714
α-helix65-673
β-strand68-7694
β-strand81-8774
β-strand93-10084
α-helix105-11511
α-helix116-1194
β-strand12315
β-strand12615
β-strand129-13574
β-strand138-14474
β-strand15015
α-helix151-1588
α-helix163-17917
α-helix180-1845
α-helix193-1953
β-strand196-19835
β-strand204-20635
α-helix213-2186
β-strand221-22443
α-helix232-2354
α-helix243-25816
α-helix265-2673
α-helix268-2736
α-helix310-31910
α-helix321-3233
α-helix332-34110
α-helix350-3512
α-helix352-3565
α-helix359-3668
α-helix371-3799

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
Kinase suppressor of Ras 1Aprotein334Homo sapiensQ8IVT5 (AlphaFold model)
Dual specificity mitogen-activated protein kinase kinase 1Cprotein384Oryctolagus cuniculusP29678 (AlphaFold model)
Sequence of entity 1 (A), FASTA
>7JUX_1 Kinase suppressor of Ras 1 (chains A)
MSYYHHHHHHDYDIPTTENLYFQGAPISRKASQTSVYLQEWDIPFEQVELGEPIGQGRWG
RVHRGRWHGEVAIRLLEMDGHNQDHLKLFKKEVMNYRQTRHENVVLFMGACMNPPHLAII
TSFCKGRTLHSFVRDPKTSLDINKTRQIAQEIIKGMGYLHAKGIVHKDLKSKNVFYDNGK
VVITDFGLFGISGVVREGRRENQLKLSHDWLCYLAPEIVREMTPGKDEDQLPFSKAADVY
AFGTVWYELQARDWPLKNQAAEASIWQIGSGEGMKRVLTSVSLGKEVSEILSACWAFDLQ
ERPSFSLLMDMLEKLPKLNRRLSHPGHFWKSAEI
Sequence of entity 2 (C), FASTA
>7JUX_2 Dual specificity mitogen-activated protein kinase kinase 1 (chains C)
MSYYHHHHHHDYDIPTTENLYFQGAKKLEELELDEQQRKRLEAFLTQKQKVGELKDDDFE
KISELGAGNGGVVFKVSHKPSGLVMARKLIHLEIKPAIRNQIIRELQVLHECNSPYIVGF
YGAFYSDGEISICMEHMDGGSLDQVLKKAGRIPEQILGKVSIAVIKGLTYLREKHKIMHR
DVKPSNILVNSRGEIKLCDFGVSGQLIDSMANSFVGTRSYMSPERLQGTHYSVQSDIWSM
GLSLVEMAVGRYPIPPPDAKELELMFGCQVEGDAAETPPRPRTPGRPLSSYGMDSRPPMA
IFELLDYIVNEPPPKLPSAVFSLEFQDFVNKCLIKNPAERADLKQLMVHAFIKRSDAEEV
DFAGWLCSTIGLNQPSTPTHAAGV

Ligands and cofactors

IDNameFormulaCopies
QOMTrametinibC26 H23 F I N5 O41
MGMagnesium ionMg1
ANPPhosphoaminophosphonic acid-adenylate esterC10 H17 N6 O12 P32

Primary citation

Structural basis for the action of the drug trametinib at KSR-bound MEK. Khan, Z.M., Real, A.M., Marsiglia, W.M. et al. Nature (2020) 588:509-514. DOI 10.1038/s41586-020-2760-4 · PubMed

Other PDB entries of the same protein (UniProt Q8IVT5 (AlphaFold model), which also has an AlphaFold model), best resolution first:

Browse structure collections

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