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.

Hemoglobin S

DNA

Oxyhemoglobin

Crambin

Carboxypeptidase A

Intermolecular Contacts in Hemoglobin S

A-DNA

DPG-Hemoglobin Complex

Deoxyribonucleic Acid (DNA)

Tomato Bushy Stunt Virus (TBSV)

Myoglobin Fold

Trypsin

Lysozyme (512)

Induced Lac Repressor

Lysozyme (488)

Ribonuclease S

TATA-Binding Protein (TBP)

Deoxyhemoglobin

Cytochrome c (unbound)

B-DNA

Z-DNA

Immunoglobulin G (IgG)

Lac Repressor

Cytochrome c

Myoglobin

Myohemerythrin

Aspartate Transcarbamoylase (ATCase)

Hemoglobin

Hemoglobin (1000)

Transfer Ribonucleic Acid (tRNA)

Collagen

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

HIV Vaccine

Phage-based COVID-19 Vaccine

SARS-CoV-2 mRNA Vaccine

CytoSkeleton

HIV in Blood Plasma

Caulobacter Polar Microdomain

Blood

Respiratory Droplet

Immunological Synapse

Kinetochore

Biosites: Muscle

Autophagy

RecA and DNA

Biosites: Cytoplasm

Chloroplast

Abiogenesis

SARS-CoV-2 Fusion

Insulin Release

SARS-CoV-2 and Neutralizing Antibodies

Escherichia coli

Biosites: Red Blood Cell

Measles Virus Proteins

Cellulose Synthase

Escherichia coli Bacterium

Model of a Mycoplasma Cell

Biosites: Basement Membrane

Transfer RNA and Gag Protein

Insulin Action

Biosites: Blood Plasma

Casein Micelle and Fat Globule in Milk

Vascular Endothelial Growth Factor (VegF) Signaling

HIV-Infected Cell

Myoglobin in a Whale Muscle Cell

Coronavirus Life Cycle

Influenza Virus

Myelin

Biosites: Nucleus

Bacteriophage T4 Infection

Red Blood Cell Cytoskeleton

Ebola Virus

JCVI-syn3A Minimal Cell

Mycoplasma mycoides

Collagen and Extracellular Matrix

Zika Virus

Coronavirus

Lipid Droplets

Excitatory and Inhibitory Synapses

Influenza Vaccine

Last Universal Common Ancestor

Poliovirus Neutralization