Molecule of the Month
May 2026

PROTACs and Molecular Glue Degraders

Therapeutic molecules that target proteins for degradation

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3D View:  5T35

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Irving Geis (1908-1997) was a gifted artist who helped illuminate the field of structural biology with his iconic images. The Geis Digital Archive features many of his illustrations in the context of their molecular structures.

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Hemoglobin S

Induced Lac Repressor

Cytochrome c (unbound)

DPG-Hemoglobin Complex

Trypsin

Lac Repressor

Transfer Ribonucleic Acid (tRNA)

Immunoglobulin G (IgG)

A-DNA

Intermolecular Contacts in Hemoglobin S

Oxyhemoglobin

Carboxypeptidase A

Crambin

Ribonuclease S

Myohemerythrin

Z-DNA

DNA

Aspartate Transcarbamoylase (ATCase)

B-DNA

Hemoglobin

Hemoglobin (1000)

Myoglobin Fold

Lysozyme (512)

Deoxyhemoglobin

Tomato Bushy Stunt Virus (TBSV)

Deoxyribonucleic Acid (DNA)

Myoglobin

TATA-Binding Protein (TBP)

Cytochrome c

Collagen

Lysozyme (488)

The Molecular Landscapes by David S. Goodsell integrate information from structural biology, microscopy and biophysics to simulate detailed views of the molecular structure of living cells.

Illustrations are free for use under a CC-BY-4.0 license

Ebola Virus

Lipid Droplets

Biosites: Blood Plasma

Biosites: Muscle

Escherichia coli

Collagen and Extracellular Matrix

Insulin Action

Vascular Endothelial Growth Factor (VegF) Signaling

CytoSkeleton

Model of a Mycoplasma Cell

Red Blood Cell Cytoskeleton

Caulobacter Polar Microdomain

Abiogenesis

Zika Virus

Coronavirus Life Cycle

Immunological Synapse

HIV Vaccine

HIV in Blood Plasma

Blood

Biosites: Nucleus

Influenza Vaccine

Excitatory and Inhibitory Synapses

RecA and DNA

Last Universal Common Ancestor

Transfer RNA and Gag Protein

Influenza Virus

Mycoplasma mycoides

Cellulose Synthase

Bacteriophage T4 Infection

Coronavirus

Chloroplast

Casein Micelle and Fat Globule in Milk

SARS-CoV-2 and Neutralizing Antibodies

JCVI-syn3A Minimal Cell

Biosites: Red Blood Cell

Respiratory Droplet

Myoglobin in a Whale Muscle Cell

Measles Virus Proteins

Poliovirus Neutralization

Insulin Release

Biosites: Cytoplasm

Phage-based COVID-19 Vaccine

HIV-Infected Cell

Kinetochore

Autophagy

SARS-CoV-2 mRNA Vaccine

Escherichia coli Bacterium

SARS-CoV-2 Fusion

Biosites: Basement Membrane

Myelin