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.

Ribonuclease S

Immunoglobulin G (IgG)

DPG-Hemoglobin Complex

Deoxyhemoglobin

Lysozyme (488)

Crambin

Myoglobin Fold

Z-DNA

Oxyhemoglobin

Cytochrome c

Induced Lac Repressor

Intermolecular Contacts in Hemoglobin S

Deoxyribonucleic Acid (DNA)

Myohemerythrin

Transfer Ribonucleic Acid (tRNA)

Aspartate Transcarbamoylase (ATCase)

Collagen

Tomato Bushy Stunt Virus (TBSV)

Hemoglobin (1000)

Lysozyme (512)

TATA-Binding Protein (TBP)

Trypsin

Hemoglobin

Cytochrome c (unbound)

Lac Repressor

Myoglobin

Hemoglobin S

A-DNA

B-DNA

DNA

Carboxypeptidase A

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

Model of a Mycoplasma Cell

Biosites: Blood Plasma

HIV Vaccine

Collagen and Extracellular Matrix

Casein Micelle and Fat Globule in Milk

Biosites: Basement Membrane

JCVI-syn3A Minimal Cell

Escherichia coli Bacterium

Biosites: Red Blood Cell

RecA and DNA

Blood

Immunological Synapse

Abiogenesis

Bacteriophage T4 Infection

Poliovirus Neutralization

Myoglobin in a Whale Muscle Cell

Last Universal Common Ancestor

Influenza Vaccine

Red Blood Cell Cytoskeleton

Biosites: Cytoplasm

Respiratory Droplet

SARS-CoV-2 Fusion

Mycoplasma mycoides

SARS-CoV-2 and Neutralizing Antibodies

Coronavirus Life Cycle

Measles Virus Proteins

SARS-CoV-2 mRNA Vaccine

Kinetochore

Coronavirus

Biosites: Nucleus

Caulobacter Polar Microdomain

Phage-based COVID-19 Vaccine

Biosites: Muscle

Ebola Virus

Myelin

HIV-Infected Cell

Zika Virus

HIV in Blood Plasma

Excitatory and Inhibitory Synapses

CytoSkeleton

Autophagy

Lipid Droplets

Escherichia coli

Chloroplast

Insulin Release

Cellulose Synthase

Transfer RNA and Gag Protein

Influenza Virus

Vascular Endothelial Growth Factor (VegF) Signaling