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)

Hemoglobin

Collagen

Intermolecular Contacts in Hemoglobin S

Deoxyhemoglobin

Myoglobin

Crambin

Aspartate Transcarbamoylase (ATCase)

Trypsin

Induced Lac Repressor

Deoxyribonucleic Acid (DNA)

Lac Repressor

Hemoglobin S

Ribonuclease S

TATA-Binding Protein (TBP)

Myohemerythrin

Lysozyme (488)

Lysozyme (512)

Transfer Ribonucleic Acid (tRNA)

Carboxypeptidase A

DPG-Hemoglobin Complex

Z-DNA

Cytochrome c

Cytochrome c (unbound)

A-DNA

Oxyhemoglobin

Myoglobin Fold

Hemoglobin (1000)

B-DNA

DNA

Immunoglobulin G (IgG)

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

Autophagy

Escherichia coli

Red Blood Cell Cytoskeleton

SARS-CoV-2 and Neutralizing Antibodies

Casein Micelle and Fat Globule in Milk

Zika Virus

Abiogenesis

Biosites: Basement Membrane

Last Universal Common Ancestor

Coronavirus

Measles Virus Proteins

Model of a Mycoplasma Cell

Phage-based COVID-19 Vaccine

Coronavirus Life Cycle

HIV in Blood Plasma

Vascular Endothelial Growth Factor (VegF) Signaling

HIV-Infected Cell

Bacteriophage T4 Infection

Biosites: Muscle

Biosites: Cytoplasm

Excitatory and Inhibitory Synapses

Cellulose Synthase

Respiratory Droplet

Transfer RNA and Gag Protein

Lipid Droplets

Myelin

Insulin Release

HIV Vaccine

Myoglobin in a Whale Muscle Cell

Blood

Collagen and Extracellular Matrix

Ebola Virus

SARS-CoV-2 mRNA Vaccine

SARS-CoV-2 Fusion

Biosites: Red Blood Cell

CytoSkeleton

JCVI-syn3A Minimal Cell

Caulobacter Polar Microdomain

Biosites: Nucleus

Escherichia coli Bacterium

Immunological Synapse

Influenza Vaccine

Insulin Action

Biosites: Blood Plasma

Mycoplasma mycoides

Poliovirus Neutralization

Influenza Virus

Kinetochore

Chloroplast

RecA and DNA