Multiple Assemblies exist for SMTL entry 1dr2
2.3 ANGSTROMS CRYSTAL STRUCTURE OF CHICKEN LIVER DIHYDROFOLATE REDUCTASE COMPLEXED WITH THIONADP+ AND BIOPTERIN; X-RAY DIFFRACTION 2.30 Å

SMTL ID
1dr2.1
Ligands
CALCIUM ION; 7-THIONICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
Polypeptides
DIHYDROFOLATE REDUCTASE
Oligo-state
monomer
SMTL ID
1dr2.2
Ligands
CALCIUM ION; 7-THIONICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
Polypeptides
DIHYDROFOLATE REDUCTASE
Oligo-state
homo-dimer