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)

Deoxyhemoglobin

Myoglobin

Immunoglobulin G (IgG)

Lysozyme (488)

Intermolecular Contacts in Hemoglobin S

Hemoglobin (1000)

Oxyhemoglobin

Deoxyribonucleic Acid (DNA)

Transfer Ribonucleic Acid (tRNA)

Lac Repressor

Z-DNA

Collagen

Carboxypeptidase A

Trypsin

Hemoglobin

DPG-Hemoglobin Complex

Myohemerythrin

Myoglobin Fold

Ribonuclease S

Tomato Bushy Stunt Virus (TBSV)

B-DNA

DNA

Cytochrome c (unbound)

Lysozyme (512)

Crambin

Aspartate Transcarbamoylase (ATCase)

Hemoglobin S

A-DNA

Cytochrome c

Induced Lac Repressor

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

Vascular Endothelial Growth Factor (VegF) Signaling

Mycoplasma mycoides

Biosites: Basement Membrane

Kinetochore

Immunological Synapse

Autophagy

Influenza Virus

Cellulose Synthase

Ebola Virus

Blood

HIV Vaccine

Measles Virus Proteins

HIV-Infected Cell

Collagen and Extracellular Matrix

Last Universal Common Ancestor

Influenza Vaccine

Red Blood Cell Cytoskeleton

Biosites: Nucleus

CytoSkeleton

Poliovirus Neutralization

Insulin Release

Myoglobin in a Whale Muscle Cell

Biosites: Cytoplasm

SARS-CoV-2 mRNA Vaccine

Chloroplast

Respiratory Droplet

Caulobacter Polar Microdomain

SARS-CoV-2 Fusion

Myelin

Coronavirus Life Cycle

Insulin Action

Model of a Mycoplasma Cell

Biosites: Red Blood Cell

Excitatory and Inhibitory Synapses

Coronavirus

Abiogenesis

Zika Virus

Biosites: Muscle

Lipid Droplets

HIV in Blood Plasma

RecA and DNA

Phage-based COVID-19 Vaccine

SARS-CoV-2 and Neutralizing Antibodies

Casein Micelle and Fat Globule in Milk

Biosites: Blood Plasma

Bacteriophage T4 Infection

Transfer RNA and Gag Protein

Escherichia coli

Escherichia coli Bacterium

JCVI-syn3A Minimal Cell