PDBe 4dfl

X-ray diffraction
1.98Å resolution

Crystal structure of spleen tyrosine kinase complexed with a sulfonamidopyrazine piperidine inhibitor

Source organism: Homo sapiens
Primary publication:
Pyrazine-based Syk kinase inhibitors.
Bioorg. Med. Chem. Lett. 22 2784-8 (2012)
PMID: 22425453

Function and Biology Details

Reaction catalysed:
ATP + a [protein]-L-tyrosine = ADP + a [protein]-L-tyrosine phosphate
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Tyrosine-protein kinase SYK Chain: A
Molecule details ›
Chain: A
Length: 274 amino acids
Theoretical weight: 31.8 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
  • Canonical: P43405 (Residues: 363-635; Coverage: 43%)
Gene name: SYK
Sequence domains: Protein tyrosine kinase
Structure domains:

Ligands and Environments

3 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SLS BEAMLINE X06SA
Spacegroup: P212121
Unit cell:
a: 40.028Å b: 85.004Å c: 90.748Å
α: 90° β: 90° γ: 90°
R R work R free
0.199 0.196 0.243
Expression system: Escherichia coli