› 3ck9

X-ray diffraction
2.2Å resolution

B. thetaiotaomicron SusD with maltoheptaose

Released:
DOI: 10.2210/pdb3ck9/pdb
PDB entry 3ck9 coloured by chain, front view.
PDB entry 3ck9 coloured by chain, side view.
PDB entry 3ck9 coloured by chain, top view.
Source organism: Bacteroides thetaiotaomicron VPI-5482
Primary publication:
Starch catabolism by a prominent human gut symbiont is directed by the recognition of amylose helices.
Koropatkin NM, Martens EC, Gordon JI, Smith TJ
Structure 16 1105-15 (2008)
PMID: 18611383

Function and Biology Details

Biochemical function:
Biological process:
Cellular component:
Sequence domains:
Structure domain:

Structure analysis Details

Assembly composition:
monomeric (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-183613 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecules (3 distinct):
Starch-binding protein SusD Chains: A, B
Molecule details ›
Chains: A, B
Length: 527 amino acids
Theoretical weight: 59.78 KDa
Source organism: Bacteroides thetaiotaomicron VPI-5482
Expression system: Escherichia coli
UniProt:
  • Canonical: Q8A1G2 (Residues: 26-551; Coverage: 100%)
Gene names: BT_3701, susD
Sequence domains: SusD family
Structure domains:

Ligands and Environments

Carbohydrate polymer : NEW Components: GLC
Carbohydrate polymer
Carbohydrate polymer : NEW Components: GLC
Carbohydrate polymer
2 bound ligands:
Ligand CA 4 x CA
Ligand EDO 13 x EDO
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: OTHER
Spacegroup: P1
Unit cell:
a: 59.61Å b: 73.22Å c: 83.38Å
α: 65.06° β: 72.19° γ: 69.73°
R-values:
R R work R free
0.185 0.185 0.222
Expression system: Escherichia coli

Quick links

Citations

16 review citations

Microbial degradation of complex carbohydrates in the gut.
Flint et al. (2012)
15 more

6 mentions without citation

The Sus operon: a model system for starch uptake by the human gut Bacteroidetes.
Foley et al. (2016)
5 more