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.

Aspartate Transcarbamoylase (ATCase)

Hemoglobin

Myohemerythrin

Tomato Bushy Stunt Virus (TBSV)

Collagen

Trypsin

Hemoglobin S

Myoglobin

Ribonuclease S

Lysozyme (488)

TATA-Binding Protein (TBP)

Carboxypeptidase A

Cytochrome c

Lysozyme (512)

Transfer Ribonucleic Acid (tRNA)

Cytochrome c (unbound)

Z-DNA

Deoxyribonucleic Acid (DNA)

Lac Repressor

Myoglobin Fold

DNA

Deoxyhemoglobin

A-DNA

Oxyhemoglobin

DPG-Hemoglobin Complex

Intermolecular Contacts in Hemoglobin S

Immunoglobulin G (IgG)

Crambin

Hemoglobin (1000)

Induced Lac Repressor

B-DNA

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

Biosites: Nucleus

Phage-based COVID-19 Vaccine

SARS-CoV-2 and Neutralizing Antibodies

Last Universal Common Ancestor

HIV in Blood Plasma

Insulin Action

Autophagy

Abiogenesis

Transfer RNA and Gag Protein

RecA and DNA

SARS-CoV-2 Fusion

CytoSkeleton

Immunological Synapse

Red Blood Cell Cytoskeleton

Myelin

Collagen and Extracellular Matrix

Model of a Mycoplasma Cell

Escherichia coli Bacterium

Blood

Zika Virus

Biosites: Cytoplasm

Coronavirus

Biosites: Muscle

Ebola Virus

Caulobacter Polar Microdomain

Vascular Endothelial Growth Factor (VegF) Signaling

Biosites: Red Blood Cell

Measles Virus Proteins

Influenza Virus

Excitatory and Inhibitory Synapses

Respiratory Droplet

Cellulose Synthase

Mycoplasma mycoides

Biosites: Blood Plasma

Insulin Release

Chloroplast

Kinetochore

JCVI-syn3A Minimal Cell

Lipid Droplets

Myoglobin in a Whale Muscle Cell

SARS-CoV-2 mRNA Vaccine

Escherichia coli

Coronavirus Life Cycle

Influenza Vaccine

Casein Micelle and Fat Globule in Milk

Poliovirus Neutralization

HIV Vaccine

HIV-Infected Cell

Biosites: Basement Membrane