Molecule of the Month
April 2026

Insect Odorant Receptors

Protein complexes that allow insects to detect a wide variety of volatile compounds

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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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Intermolecular Contacts in Hemoglobin S

Z-DNA

Deoxyribonucleic Acid (DNA)

Myoglobin

Cytochrome c

Collagen

Trypsin

Hemoglobin (1000)

Deoxyhemoglobin

DNA

Lysozyme (488)

DPG-Hemoglobin Complex

Induced Lac Repressor

A-DNA

TATA-Binding Protein (TBP)

Myohemerythrin

B-DNA

Immunoglobulin G (IgG)

Tomato Bushy Stunt Virus (TBSV)

Hemoglobin

Transfer Ribonucleic Acid (tRNA)

Carboxypeptidase A

Oxyhemoglobin

Hemoglobin S

Myoglobin Fold

Lysozyme (512)

Lac Repressor

Crambin

Aspartate Transcarbamoylase (ATCase)

Cytochrome c (unbound)

Ribonuclease S

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

Insulin Action

HIV Vaccine

CytoSkeleton

Biosites: Red Blood Cell

Escherichia coli Bacterium

Insulin Release

Biosites: Blood Plasma

Zika Virus

Red Blood Cell Cytoskeleton

Poliovirus Neutralization

Measles Virus Proteins

Last Universal Common Ancestor

Myelin

HIV in Blood Plasma

SARS-CoV-2 and Neutralizing Antibodies

HIV-Infected Cell

Biosites: Muscle

Escherichia coli

Immunological Synapse

Kinetochore

Coronavirus Life Cycle

Lipid Droplets

Collagen and Extracellular Matrix

JCVI-syn3A Minimal Cell

Biosites: Basement Membrane

Chloroplast

Bacteriophage T4 Infection

Transfer RNA and Gag Protein

Autophagy

Mycoplasma mycoides

Influenza Vaccine

Abiogenesis

Respiratory Droplet

Excitatory and Inhibitory Synapses

Myoglobin in a Whale Muscle Cell

Caulobacter Polar Microdomain

Biosites: Nucleus

Vascular Endothelial Growth Factor (VegF) Signaling

RecA and DNA

Casein Micelle and Fat Globule in Milk

SARS-CoV-2 mRNA Vaccine

Model of a Mycoplasma Cell

Coronavirus

Ebola Virus

Phage-based COVID-19 Vaccine

SARS-CoV-2 Fusion

Cellulose Synthase

Influenza Virus

Blood

Biosites: Cytoplasm