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.

Tomato Bushy Stunt Virus (TBSV)

Collagen

DPG-Hemoglobin Complex

Hemoglobin (1000)

A-DNA

Myohemerythrin

Lysozyme (512)

TATA-Binding Protein (TBP)

Deoxyribonucleic Acid (DNA)

Hemoglobin

Ribonuclease S

Crambin

Aspartate Transcarbamoylase (ATCase)

Myoglobin Fold

Transfer Ribonucleic Acid (tRNA)

Cytochrome c

Lysozyme (488)

Deoxyhemoglobin

Z-DNA

Myoglobin

Cytochrome c (unbound)

Lac Repressor

Hemoglobin S

B-DNA

DNA

Induced Lac Repressor

Immunoglobulin G (IgG)

Carboxypeptidase A

Trypsin

Oxyhemoglobin

Intermolecular Contacts in Hemoglobin S

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

Biosites: Muscle

Collagen and Extracellular Matrix

Last Universal Common Ancestor

HIV in Blood Plasma

Insulin Release

Biosites: Basement Membrane

Caulobacter Polar Microdomain

Influenza Virus

RecA and DNA

SARS-CoV-2 mRNA Vaccine

Biosites: Cytoplasm

Bacteriophage T4 Infection

Red Blood Cell Cytoskeleton

JCVI-syn3A Minimal Cell

Blood

SARS-CoV-2 and Neutralizing Antibodies

Ebola Virus

Insulin Action

Influenza Vaccine

Biosites: Nucleus

Transfer RNA and Gag Protein

Coronavirus

SARS-CoV-2 Fusion

Kinetochore

HIV-Infected Cell

Escherichia coli

HIV Vaccine

Casein Micelle and Fat Globule in Milk

Myelin

Excitatory and Inhibitory Synapses

Immunological Synapse

CytoSkeleton

Biosites: Blood Plasma

Phage-based COVID-19 Vaccine

Respiratory Droplet

Biosites: Red Blood Cell

Zika Virus

Chloroplast

Vascular Endothelial Growth Factor (VegF) Signaling

Coronavirus Life Cycle

Poliovirus Neutralization

Measles Virus Proteins

Abiogenesis

Myoglobin in a Whale Muscle Cell

Autophagy

Model of a Mycoplasma Cell

Lipid Droplets

Mycoplasma mycoides

Cellulose Synthase

Escherichia coli Bacterium