Dihydrofolate reductase and folic acid
Dihydrofolate reductase and methotrexate
DNA clamp and DNA, molecular model
DNA polymerase bound with DNA
Galactoside acetyltransferase molecule
Fatty acid synthase in complex with NADP+
Oxoguanine glycosylase complex
PolyA polymerase and RNA
DNA clamp, molecular model
Epidermal growth factor and receptor complex, illustration
Enzyme catalysing DNA recombination
Multidrug transporter molecule
Pyridoxal phosphate molecule
PolyA polymerase, molecular model
Lysozyme complexed with antibody
RNA exosome complex, molecular model
Glycosylation enzyme molecule
Human RNA exosome complex, molecular mode
Heat shock protein 90 chaperone complex
Fat mass and obesity-associated protein
TATA box-binding protein complex
DNA-RNA hybrid molecule
Methyl-coenzyme M reductase
Hammerhead ribozyme molecule
Glycogen phosphorylase molecule
PhaB reductase complex, molecular model
Succinyl-CoA synthetase enzyme
Hexokinase enzyme binding to glucose, illustration
Ovarian tumour complexed with ubiquitin, molecular model
Carbon monoxide bound to horseradish peroxidase, illustration
Palladium bound to cellulase active site, illustration
Transaldolase, illustation
Plant serotonin N-acetyltransferase complex, illustration
Dihydrofolate reductase complex
Serotonin N-acetyltransferase complex
RuBisCO-RuBP complex, illustration
Pit-1 transcription factor bound to DNA
Importin heterodimer protein
Nuclear import complex molecule
Acetyltransferase complex
Glycogen phosphorylase active site
HIV enzyme protein, molecular model
RNA Polymerase II, illustration
AlkB in complex with 1-methyl adenine
RNA polymerase II and TFIIB
Anthrax bacillus glms ribozyme
Haemophore protein, illustration
Histone methylation, molecular model
Type I topoisomerase bound to DNA
Lead atoms complexed with ALAD enzyme, illustration
Hepatitis C virus NS5A domain, molecular model
Insulin-degrading enzyme and inhibitor
RNA duplex molecule
HIV reverse transcription enzyme, illustration
Citrate synthase molecule
Glutathione transferase complex, molecular model
Methyltransferase-tRNA complex, molecular model
Human ARTD2 complexed with DNA, illustration
GABA-B receptor activation, molecular model
Active membrane transport, illustration
Retinal dehydrogenase molecule
GTP cyclohydrolase I molecule
Folic acid, molecular model
DNA polymerase III holoenzyme
RecBCD enzyme complex unwinding DNA, illustration
Methyltransferase complexed with DNA
Haemoglobin subunit, illustration
Protein folding, illustration
Foot-and-mouth disease virus drug complex
Human FasL and DcR3 complex
Rituximab antibody complex, molecular model
Interleukin-Briakinumab complex, molecular model
Bacteriophage T7 capsid, molecular model
Lac-repressor, illustration
Trypsinogen molecule with inhibitor
Heterotrimeric G protein complex molecule
SV40 antigen and tumor suppressor
G protein complex
TNA polymerase complexed with DNA TNA, molecular model
Hepatitis C polymerase enzyme molecule
Aldehyde dehydrogenase enzyme structure
K-Ras GTP complex
V-ATPase molecule, molecular model
Myoglobin molecule
Aspartate transcarbamylase complex, molecular model
Rhodopsin molecule
Human dihydrofolate reductase
Antibiotic complexed with topoisomerase IV, illustration
Enalapril drug bound to ACE, illustration
Hepatitis C virus enzyme complex, molecular model
Hepatitis C virus polymerase complex, molecular model
Urea channel molecule
Tumour suppressor p53 degraded by proteasome, illustration
Hexokinase sugar enzyme
Citrate acid cycle enzyme
Pyruvate dehydrogenase complex enzyme
Elongation factors Tu and Ts
DNA gyrase protein segment
Proteinase inhibitor molecule
HGPRTase molecule