› 6x3q

X-ray diffraction
2.15Å resolution

Hsa Siglec and Unique domains in complex with 3'sialyl-N-acetyllactosamine trisaccharide

Released:
DOI: 10.2210/pdb6x3q/pdb
PDB entry 6x3q coloured by chain, front view.
PDB entry 6x3q coloured by chain, side view.
PDB entry 6x3q coloured by chain, top view.
Source organism: Streptococcus gordonii str. Challis
Primary publication:
Origins of glycan selectivity in streptococcal Siglec-like adhesins suggest mechanisms of receptor adaptation.
Bensing BA, Stubbs HE, Agarwal R, Yamakawa I, Luong K, Solakyildirim K, Yu H, Hadadianpour A, Castro MA, Fialkowski KP, Morrison KM, Wawrzak Z, Chen X, Lebrilla CB, Baudry J, Smith JC, Sullam PM, Iverson TM
Nat Commun 13 2753 (2022)
PMID: 35585145

Function and Biology Details

Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned
Sequence domains:

Structure analysis Details

Assembly composition:
monomeric (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-108566 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecules (2 distinct):
Streptococcal hemagglutinin Chain: A
Molecule details ›
Chain: A
Length: 234 amino acids
Theoretical weight: 25.84 KDa
Source organism: Streptococcus gordonii str. Challis
Expression system: Escherichia coli
UniProt:
  • Canonical: A8AWU7 (Residues: 220-453; Coverage: 11%)
Gene names: SGO_0966, hsa
Sequence domains:

Ligands and Environments

Carbohydrate polymer : NEW Components: NAG, GAL, SIA
Carbohydrate polymer
1 bound ligand:
Ligand NA 2 x NA
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRL BEAMLINE BL9-2
Spacegroup: P212121
Unit cell:
a: 45.743Å b: 57.738Å c: 75.86Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.207 0.206 0.233
Expression system: Escherichia coli

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Citations

1 review citation

Mutexa: A Computational Ecosystem for Intelligent Protein Engineering.
Yang et al. (2023)