X-ray diffraction
2.5Å resolution

The crystal structure of PtcA from S. mutans

Source organism: Streptococcus mutans
Entry authors: Lei J, Liu X, Li L

Function and Biology Details

Structure analysis Details

Assembly composition:
homo trimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Putative PTS system, cellobiose-specific IIA component Chains: A, B, C, D, E, F, G, H
Molecule details ›
Chains: A, B, C, D, E, F, G, H
Length: 120 amino acids
Theoretical weight: 13.48 KDa
Source organism: Streptococcus mutans
Expression system: Escherichia coli
  • Canonical: Q8DT03 (Residues: 1-103; Coverage: 100%)
Gene names: SMU_1598, ptcA
Sequence domains: PTS system, Lactose/Cellobiose specific IIA subunit
Structure domains: Phosphotransferase system, lactose/cellobiose-type IIA subunit

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: BSRF BEAMLINE 1W2B
Spacegroup: R3
Unit cell:
a: 127.4Å b: 127.4Å c: 190.6Å
α: 90° β: 90° γ: 120°
R R work R free
0.24 0.208 0.28
Expression system: Escherichia coli