Molecule of the Month
September 2026

Biofilms

Bacterial communities glued together and protected by biological polymers

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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.

Intermolecular Contacts in Hemoglobin S

Immunoglobulin G (IgG)

Collagen

Aspartate Transcarbamoylase (ATCase)

TATA-Binding Protein (TBP)

Ribonuclease S

DNA

Crambin

Myoglobin

Deoxyribonucleic Acid (DNA)

Myohemerythrin

Induced Lac Repressor

Lac Repressor

Hemoglobin

Hemoglobin S

Carboxypeptidase A

Z-DNA

Myoglobin Fold

Transfer Ribonucleic Acid (tRNA)

Trypsin

Oxyhemoglobin

DPG-Hemoglobin Complex

Lysozyme (488)

Cytochrome c

A-DNA

Cytochrome c (unbound)

B-DNA

Tomato Bushy Stunt Virus (TBSV)

Hemoglobin (1000)

Lysozyme (512)

Deoxyhemoglobin

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

Poliovirus Neutralization

JCVI-syn3A Minimal Cell

Myelin

Excitatory and Inhibitory Synapses

Zika Virus

Biosites: Red Blood Cell

Red Blood Cell Cytoskeleton

Abiogenesis

Coronavirus

SARS-CoV-2 Fusion

Vascular Endothelial Growth Factor (VegF) Signaling

Escherichia coli Bacterium

Mycoplasma mycoides

HIV in Blood Plasma

Influenza Vaccine

Model of a Mycoplasma Cell

Transfer RNA and Gag Protein

RecA and DNA

HIV Vaccine

Collagen and Extracellular Matrix

Blood

Caulobacter Polar Microdomain

Biosites: Basement Membrane

SARS-CoV-2 and Neutralizing Antibodies

SARS-CoV-2 mRNA Vaccine

CytoSkeleton

Casein Micelle and Fat Globule in Milk

Coronavirus Life Cycle

Myoglobin in a Whale Muscle Cell

Biosites: Blood Plasma

Immunological Synapse

Ebola Virus

Measles Virus Proteins

Insulin Action

Escherichia coli

Biosites: Muscle

Bacteriophage T4 Infection

Kinetochore

Phage-based COVID-19 Vaccine

Biosites: Cytoplasm

Influenza Virus

Autophagy

Cellulose Synthase

Biosites: Nucleus

Respiratory Droplet

Lipid Droplets

Insulin Release

Chloroplast

Last Universal Common Ancestor

HIV-Infected Cell