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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SciArt Galleries
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.

Myohemerythrin

Tomato Bushy Stunt Virus (TBSV)

Hemoglobin S

Cytochrome c (unbound)

Z-DNA

Hemoglobin

DPG-Hemoglobin Complex

Immunoglobulin G (IgG)

B-DNA

Deoxyribonucleic Acid (DNA)

Myoglobin Fold

Hemoglobin (1000)

Transfer Ribonucleic Acid (tRNA)

Aspartate Transcarbamoylase (ATCase)

Ribonuclease S

Lysozyme (488)

Induced Lac Repressor

Carboxypeptidase A

Crambin

Cytochrome c

A-DNA

Trypsin

Oxyhemoglobin

Deoxyhemoglobin

Intermolecular Contacts in Hemoglobin S

Lac Repressor

Lysozyme (512)

TATA-Binding Protein (TBP)

DNA

Myoglobin

Collagen

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

SARS-CoV-2 and Neutralizing Antibodies

Myelin

Biosites: Basement Membrane

Last Universal Common Ancestor

Transfer RNA and Gag Protein

Biosites: Muscle

HIV-Infected Cell

Myoglobin in a Whale Muscle Cell

Biosites: Red Blood Cell

Insulin Action

Zika Virus

Biosites: Blood Plasma

Phage-based COVID-19 Vaccine

Blood

Poliovirus Neutralization

Coronavirus

Respiratory Droplet

SARS-CoV-2 Fusion

Bacteriophage T4 Infection

Insulin Release

HIV in Blood Plasma

Escherichia coli

JCVI-syn3A Minimal Cell

Influenza Virus

Mycoplasma mycoides

SARS-CoV-2 mRNA Vaccine

HIV Vaccine

Coronavirus Life Cycle

Autophagy

RecA and DNA

Red Blood Cell Cytoskeleton

Measles Virus Proteins

Immunological Synapse

Vascular Endothelial Growth Factor (VegF) Signaling

Casein Micelle and Fat Globule in Milk

CytoSkeleton

Excitatory and Inhibitory Synapses

Chloroplast

Biosites: Nucleus

Kinetochore

Influenza Vaccine

Cellulose Synthase

Collagen and Extracellular Matrix

Lipid Droplets

Abiogenesis

Model of a Mycoplasma Cell

Ebola Virus

Caulobacter Polar Microdomain

Biosites: Cytoplasm

Escherichia coli Bacterium