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.

Images used with permission from the Howard Hughes Medical Institute (www.hhmi.org). All rights reserved.

DNA

Myoglobin

Lysozyme (512)

Aspartate Transcarbamoylase (ATCase)

TATA-Binding Protein (TBP)

Hemoglobin S

Myoglobin Fold

Transfer Ribonucleic Acid (tRNA)

A-DNA

Lysozyme (488)

Ribonuclease S

Immunoglobulin G (IgG)

Oxyhemoglobin

B-DNA

Hemoglobin (1000)

Cytochrome c (unbound)

Crambin

Lac Repressor

Tomato Bushy Stunt Virus (TBSV)

Collagen

Intermolecular Contacts in Hemoglobin S

Carboxypeptidase A

Induced Lac Repressor

Z-DNA

DPG-Hemoglobin Complex

Hemoglobin

Deoxyribonucleic Acid (DNA)

Myohemerythrin

Trypsin

Deoxyhemoglobin

Cytochrome c

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

SARS-CoV-2 and Neutralizing Antibodies

Biosites: Blood Plasma

Collagen and Extracellular Matrix

RecA and DNA

Biosites: Nucleus

Respiratory Droplet

Biosites: Basement Membrane

JCVI-syn3A Minimal Cell

Poliovirus Neutralization

Model of a Mycoplasma Cell

Myoglobin in a Whale Muscle Cell

Excitatory and Inhibitory Synapses

Influenza Vaccine

Insulin Release

Escherichia coli Bacterium

HIV Vaccine

SARS-CoV-2 mRNA Vaccine

Mycoplasma mycoides

Phage-based COVID-19 Vaccine

Vascular Endothelial Growth Factor (VegF) Signaling

Chloroplast

Blood

Escherichia coli

Zika Virus

Lipid Droplets

Coronavirus Life Cycle

Autophagy

Biosites: Muscle

Biosites: Red Blood Cell

Casein Micelle and Fat Globule in Milk

Bacteriophage T4 Infection

HIV-Infected Cell

Immunological Synapse

Myelin

Caulobacter Polar Microdomain

Measles Virus Proteins

Insulin Action

Red Blood Cell Cytoskeleton

Kinetochore

SARS-CoV-2 Fusion

Transfer RNA and Gag Protein

CytoSkeleton

Last Universal Common Ancestor

Abiogenesis

Coronavirus

Biosites: Cytoplasm

Cellulose Synthase

Influenza Virus

HIV in Blood Plasma