Respiratory complex I
Succinyl-CoA synthetase enzyme
ATP-dependent protease molecule
Succinate dehydrogenase enzyme
Oxidoreductase enzyme complex
DNA gyrase protein segment
Bacterial protease molecule
Multidrug transporter molecule, illustration
Bacterial nanocompartment
70S ribosome, molecular model
Antibiotic resistance enzyme molecule
LAC repressor molecule
Bacterial protein-chaperone complex
Simian virus SV40 large T antigen
Flu virus surface protein molecule
Bacterial penicillin-binding protein
Phosphofructokinase bacterial enzyme
Cytochrome BC1 molecule
cAMP-dependent protein kinase molecule
ATP synthase rotor ring
Marburg viral protein 35 and RNA
FecA transmembrane channel
Ribosomal RNA-binding protein molecule
Bacterial regulator-DNA complex
Light-harvesting protein complex
Herpesvirus surface protein molecule
Double-stranded RNA-ribonuclease III
Human electron transfer flavoprotein
Serotonin N-acetyltransferase complex
Mutant insulin, molecular model
Manganese catalase enzyme molecule
Galactoside acetyltransferase molecule
Citrate acid cycle enzyme
Pyruvate dehydrogenase complex enzyme
Elongation factors Tu and Ts
Citrate synthase molecule
Elongation factor Tu and tRNA
Src protein molecule
Escherichia coli heat-labile enterotoxin
Cyclin-dependent kinase inhibitor complex
SV40 antigen and tumor suppressor
Anthrax oedema factor molecule
Adenovirus fibre shaft protein
Multidrug transporter molecule
MscS ion channel protein structure
Urea channel molecule
Bacteriophages infecting salmonella bacteria, illustration
Transcription activator and DNA
Fungal prion protein
Bacterial RNA plasmid loop-loop complex
Biotin ligase enzyme, molecular model
Resolvase complexed with DNA
Bacterial RNA-binding protein molecule
HU DNA binding protein molecule
Anthrax toxin prepore, molecular model
Yeast enzyme, molecular model
Dienoyl-coenzyme A isomerase molecule
Insulin-degrading enzyme and inhibitor
Isocitrate dehydrogenase kinase
Growth and differentiation factor 15 molecule, illustration
Lumazine synthase molecule
E. coli DNA mismatch repair complex
Heterotrimeric G protein complex molecule
Heterotrimeric G protein molecule
Transcription activation of IFN-beta gene
Transcription factor bound to DNA
H-NS chromatin-structuring protein
Methane monooxygenase enzyme
Dengue virus surface protein molecule
Nitrogen-fixing molybdenum iron enzyme
Glutamate transporter protein
Hexokinase sugar enzyme
Proteinase inhibitor molecule
PolyA polymerase, molecular model
HGPRTase molecule
Chitinase enzyme molecule
Calcium pumping ATPase muscle enzyme
Lysozyme complexed with antibody
Hammerhead ribozyme molecule
DNA transcription, molecular model
Amylase, molecular model
Uricase enzyme, molecular model
Scavenger mRNA-decapping enzyme
Carbonic anhydrase molecule
Hydroxysteroid dehydrogenase molecule
Bioluminescent enzyme molecule
Cytochrome P450 and erythromycin
Lysozyme molecule
RNA exosome complex, molecular model
PolyA polymerase and RNA
Family 84 glycoside hydrolase molecule
RNA interference molecules
DNA and MECP2 complex, molecular model
mRNA capping apparatus
Glycosylation enzyme molecule
DNA repair enzyme, molecular model
Iron-regulatory protein bound to RNA
Human lysine-specific demethylase
Methionine aminopeptidase molecule
Ribonuclease A molecule
Alcohol dehydrogenase molecule
Human RNA exosome complex, molecular mode
V-ATPase molecule, molecular model
Antibody fragment-lysozyme complex
Rhomboid protease enzyme
Bovine coronavirus enzyme
NpmA methyltransferase
Amylase enzyme
D-amino acid oxidase enzyme
Enzyme and quinazoline drug
RNA polymerase holoenzyme
Bacterial manganese catalase molecule
Bacterial sensor histidine kinase molecule
Bacterial rhomboid protease GlpG
Histidine kinase and response regulator
Carbapenemase KPC-2 molecule with inhibitor
New Delhi metallo-beta-lactamase molecule
Ribonuclease III complex
Beta-glucosidase molecule
Circadian clock molecule, molecular model
Phosphoglycolate phosphatase, illustration
Chaperonin folding protein
Cytochrome b6f complex, molecular model
Toll-like receptor 3 and RNA
Purple bacterium photosynthesis centre
Membrane proton pump
MHC protein-antigen complex
GSK3B enzyme complex with kinase inhibitor, illustration
GSK3B enzyme complex with ADP and inhibitor, illustration
Voltage-gated potassium channel
Cell metabolism, illustration
NAD-dependent DNA ligase molecule
Catalase, molecular model
Tobacco mosaic virus coat protein
Archaeal aminotransferase, molecular model
A-carboxysome RuBisCo enzyme, molecular model
Anthrax oedema factor molecule, illustration
Lambda repressor-operator complex
Ebola virus glycoprotein
Sendai virus phosphoprotein
Hepatitis C glycoprotein and antibody
Hepatitis C polymerase enzyme molecule
Glycogen phosphorylase active site
Nicotine addiction enzyme therapy, illustration
DNA clamp, molecular model
Yeast enzyme molecule
Caspase-9 with inhibitor, molecular model