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.

TATA-Binding Protein (TBP)

Hemoglobin

Carboxypeptidase A

Oxyhemoglobin

Deoxyhemoglobin

Deoxyribonucleic Acid (DNA)

Ribonuclease S

Myoglobin

Trypsin

B-DNA

Z-DNA

Immunoglobulin G (IgG)

Lysozyme (512)

Intermolecular Contacts in Hemoglobin S

Cytochrome c

Hemoglobin (1000)

Hemoglobin S

Myoglobin Fold

Tomato Bushy Stunt Virus (TBSV)

Aspartate Transcarbamoylase (ATCase)

A-DNA

Collagen

Lysozyme (488)

Crambin

Transfer Ribonucleic Acid (tRNA)

Induced Lac Repressor

DNA

Myohemerythrin

Lac Repressor

Cytochrome c (unbound)

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

Escherichia coli

HIV-Infected Cell

Ebola Virus

Measles Virus Proteins

Phage-based COVID-19 Vaccine

Coronavirus Life Cycle

Biosites: Nucleus

Biosites: Basement Membrane

Vascular Endothelial Growth Factor (VegF) Signaling

Myoglobin in a Whale Muscle Cell

SARS-CoV-2 Fusion

Escherichia coli Bacterium

RecA and DNA

Caulobacter Polar Microdomain

Casein Micelle and Fat Globule in Milk

Insulin Action

Blood

CytoSkeleton

Biosites: Cytoplasm

Coronavirus

Zika Virus

Transfer RNA and Gag Protein

HIV in Blood Plasma

Immunological Synapse

Mycoplasma mycoides

Insulin Release

Influenza Vaccine

Biosites: Muscle

Collagen and Extracellular Matrix

Autophagy

SARS-CoV-2 mRNA Vaccine

JCVI-syn3A Minimal Cell

Red Blood Cell Cytoskeleton

Lipid Droplets

Kinetochore

Myelin

Excitatory and Inhibitory Synapses

SARS-CoV-2 and Neutralizing Antibodies

Respiratory Droplet

Poliovirus Neutralization

Influenza Virus

HIV Vaccine

Biosites: Red Blood Cell

Model of a Mycoplasma Cell

Cellulose Synthase

Chloroplast

Abiogenesis

Biosites: Blood Plasma

Bacteriophage T4 Infection

Last Universal Common Ancestor