PDBe 4m64

X-ray diffraction
3.35Å resolution

3D crystal structure of Na+/melibiose symporter of Salmonella typhimurium


Function and Biology Details

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Melibiose carrier protein Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 486 amino acids
Theoretical weight: 54.24 KDa
Source organism: Salmonella enterica subsp. enterica serovar Typhimurium str. LT2
Expression system: Escherichia coli
  • Canonical: P30878 (Residues: 1-476; Coverage: 100%)
Gene names: STM4299, melB
Sequence domains: MFS/sugar transport protein

Ligands and Environments

No bound ligands

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ALS BEAMLINE 5.0.2
Spacegroup: P32
Unit cell:
a: 127.206Å b: 127.206Å c: 206.303Å
α: 90° β: 90° γ: 120°
R R work R free
0.314 0.312 0.359
Expression system: Escherichia coli