4n1e

X-ray diffraction
2.23Å resolution

Structural evidence for antigen receptor evolution

Released:
Source organisms:
Primary publication:
Structural reconstruction of protein ancestry.
Proc Natl Acad Sci U S A 114 3897-3902 (2017)
PMID: 28356519

Function and Biology Details

Reaction catalysed:
Hydrolysis of (1->4)-beta-linkages between N-acetylmuramic acid and N-acetyl-D-glucosamine residues in a peptidoglycan and between N-acetyl-D-glucosamine residues in chitodextrins

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
PDBe Complex ID:
PDB-CPX-208273 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
immunoglobulin variable light chain domain Chains: A, B, C, D, E, F, G, H
Molecule details ›
Chains: A, B, C, D, E, F, G, H
Length: 109 amino acids
Theoretical weight: 11.78 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
Structure domains: Immunoglobulins
Lysozyme C Chains: I, J, K, L
Molecule details ›
Chains: I, J, K, L
Length: 129 amino acids
Theoretical weight: 14.33 KDa
Source organism: Gallus gallus
UniProt:
  • Canonical: P00698 (Residues: 19-147; Coverage: 100%)
Gene name: LYZ
Sequence domains: C-type lysozyme/alpha-lactalbumin family
Structure domains: Lysozyme

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: RIGAKU MICROMAX-007 HF
Spacegroup: P21
Unit cell:
a: 114.917Å b: 39.413Å c: 178.301Å
α: 90° β: 106.38° γ: 90°
R-values:
R R work R free
0.225 0.223 0.264
Expression system: Escherichia coli BL21(DE3)