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.

Ribonuclease S

Collagen

Deoxyhemoglobin

Lysozyme (512)

Z-DNA

Myoglobin Fold

Carboxypeptidase A

A-DNA

DPG-Hemoglobin Complex

Deoxyribonucleic Acid (DNA)

TATA-Binding Protein (TBP)

Cytochrome c

Aspartate Transcarbamoylase (ATCase)

Hemoglobin

Immunoglobulin G (IgG)

B-DNA

Tomato Bushy Stunt Virus (TBSV)

Lysozyme (488)

Transfer Ribonucleic Acid (tRNA)

Intermolecular Contacts in Hemoglobin S

DNA

Hemoglobin S

Lac Repressor

Cytochrome c (unbound)

Induced Lac Repressor

Trypsin

Oxyhemoglobin

Myohemerythrin

Myoglobin

Hemoglobin (1000)

Crambin

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

Kinetochore

Collagen and Extracellular Matrix

Red Blood Cell Cytoskeleton

HIV Vaccine

Coronavirus Life Cycle

Measles Virus Proteins

RecA and DNA

Bacteriophage T4 Infection

Escherichia coli

Ebola Virus

Last Universal Common Ancestor

Transfer RNA and Gag Protein

Coronavirus

Poliovirus Neutralization

Influenza Virus

Mycoplasma mycoides

Phage-based COVID-19 Vaccine

Chloroplast

Excitatory and Inhibitory Synapses

Blood

Biosites: Basement Membrane

Insulin Action

JCVI-syn3A Minimal Cell

Biosites: Blood Plasma

Respiratory Droplet

Casein Micelle and Fat Globule in Milk

Immunological Synapse

Caulobacter Polar Microdomain

Abiogenesis

Zika Virus

Cellulose Synthase

Vascular Endothelial Growth Factor (VegF) Signaling

HIV-Infected Cell

Model of a Mycoplasma Cell

Biosites: Nucleus

SARS-CoV-2 and Neutralizing Antibodies

Insulin Release

Escherichia coli Bacterium

HIV in Blood Plasma

Lipid Droplets

Biosites: Muscle

Influenza Vaccine

SARS-CoV-2 mRNA Vaccine

Biosites: Cytoplasm

Biosites: Red Blood Cell

Autophagy

SARS-CoV-2 Fusion

Myoglobin in a Whale Muscle Cell

Myelin

CytoSkeleton