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)

Ribonuclease S

Z-DNA

Hemoglobin S

Lac Repressor

B-DNA

TATA-Binding Protein (TBP)

Collagen

Transfer Ribonucleic Acid (tRNA)

Tomato Bushy Stunt Virus (TBSV)

Induced Lac Repressor

Intermolecular Contacts in Hemoglobin S

Carboxypeptidase A

Lysozyme (512)

Immunoglobulin G (IgG)

Lysozyme (488)

Trypsin

Myohemerythrin

Cytochrome c

Myoglobin Fold

A-DNA

Deoxyribonucleic Acid (DNA)

Hemoglobin

Oxyhemoglobin

Myoglobin

DNA

Cytochrome c (unbound)

Hemoglobin (1000)

Crambin

Deoxyhemoglobin

DPG-Hemoglobin Complex

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

Abiogenesis

HIV-Infected Cell

Immunological Synapse

Chloroplast

Autophagy

SARS-CoV-2 mRNA Vaccine

Biosites: Red Blood Cell

Excitatory and Inhibitory Synapses

Biosites: Cytoplasm

Escherichia coli

Influenza Virus

Myelin

Cellulose Synthase

Model of a Mycoplasma Cell

Blood

HIV Vaccine

Biosites: Blood Plasma

Biosites: Muscle

Insulin Action

Casein Micelle and Fat Globule in Milk

Caulobacter Polar Microdomain

Phage-based COVID-19 Vaccine

Insulin Release

Kinetochore

JCVI-syn3A Minimal Cell

Red Blood Cell Cytoskeleton

Mycoplasma mycoides

Influenza Vaccine

RecA and DNA

Lipid Droplets

Coronavirus Life Cycle

Biosites: Nucleus

Measles Virus Proteins

Biosites: Basement Membrane

Last Universal Common Ancestor

Collagen and Extracellular Matrix

HIV in Blood Plasma

Ebola Virus

Coronavirus

SARS-CoV-2 and Neutralizing Antibodies

Poliovirus Neutralization

CytoSkeleton

Vascular Endothelial Growth Factor (VegF) Signaling

Zika Virus

SARS-CoV-2 Fusion

Transfer RNA and Gag Protein

Myoglobin in a Whale Muscle Cell

Respiratory Droplet

Bacteriophage T4 Infection

Escherichia coli Bacterium