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.

DNA

Deoxyhemoglobin

Carboxypeptidase A

DPG-Hemoglobin Complex

Cytochrome c (unbound)

Lysozyme (488)

Immunoglobulin G (IgG)

Hemoglobin (1000)

Oxyhemoglobin

Transfer Ribonucleic Acid (tRNA)

Aspartate Transcarbamoylase (ATCase)

B-DNA

A-DNA

TATA-Binding Protein (TBP)

Ribonuclease S

Myohemerythrin

Hemoglobin S

Induced Lac Repressor

Collagen

Myoglobin

Lac Repressor

Deoxyribonucleic Acid (DNA)

Crambin

Tomato Bushy Stunt Virus (TBSV)

Myoglobin Fold

Z-DNA

Cytochrome c

Intermolecular Contacts in Hemoglobin S

Lysozyme (512)

Hemoglobin

Trypsin

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

Bacteriophage T4 Infection

HIV in Blood Plasma

Biosites: Red Blood Cell

HIV Vaccine

Autophagy

Lipid Droplets

Model of a Mycoplasma Cell

Excitatory and Inhibitory Synapses

Biosites: Basement Membrane

Influenza Virus

Myelin

Poliovirus Neutralization

Coronavirus Life Cycle

Mycoplasma mycoides

Biosites: Muscle

Escherichia coli

Caulobacter Polar Microdomain

SARS-CoV-2 and Neutralizing Antibodies

Biosites: Cytoplasm

Last Universal Common Ancestor

SARS-CoV-2 mRNA Vaccine

JCVI-syn3A Minimal Cell

Vascular Endothelial Growth Factor (VegF) Signaling

Biosites: Blood Plasma

Immunological Synapse

Insulin Action

RecA and DNA

Abiogenesis

Escherichia coli Bacterium

Coronavirus

Measles Virus Proteins

Chloroplast

Respiratory Droplet

Transfer RNA and Gag Protein

Casein Micelle and Fat Globule in Milk

Collagen and Extracellular Matrix

Influenza Vaccine

Insulin Release

SARS-CoV-2 Fusion

Phage-based COVID-19 Vaccine

Kinetochore

Zika Virus

HIV-Infected Cell

Biosites: Nucleus

CytoSkeleton

Red Blood Cell Cytoskeleton

Ebola Virus

Blood

Cellulose Synthase

Myoglobin in a Whale Muscle Cell