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.

Lysozyme (512)

Crambin

Myoglobin

Immunoglobulin G (IgG)

DPG-Hemoglobin Complex

Hemoglobin (1000)

Aspartate Transcarbamoylase (ATCase)

Deoxyhemoglobin

TATA-Binding Protein (TBP)

DNA

Collagen

Intermolecular Contacts in Hemoglobin S

Cytochrome c

Trypsin

Hemoglobin

Transfer Ribonucleic Acid (tRNA)

Lysozyme (488)

Ribonuclease S

Myoglobin Fold

Hemoglobin S

Z-DNA

Myohemerythrin

Tomato Bushy Stunt Virus (TBSV)

Induced Lac Repressor

A-DNA

Carboxypeptidase A

B-DNA

Oxyhemoglobin

Cytochrome c (unbound)

Deoxyribonucleic Acid (DNA)

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

Chloroplast

Last Universal Common Ancestor

Respiratory Droplet

Biosites: Blood Plasma

Biosites: Red Blood Cell

Biosites: Muscle

Biosites: Basement Membrane

Coronavirus Life Cycle

Biosites: Nucleus

Escherichia coli Bacterium

Insulin Action

HIV-Infected Cell

SARS-CoV-2 Fusion

Influenza Vaccine

SARS-CoV-2 and Neutralizing Antibodies

Kinetochore

Lipid Droplets

Zika Virus

Escherichia coli

HIV in Blood Plasma

Model of a Mycoplasma Cell

Insulin Release

Immunological Synapse

Transfer RNA and Gag Protein

Caulobacter Polar Microdomain

Blood

Collagen and Extracellular Matrix

Phage-based COVID-19 Vaccine

Myelin

Vascular Endothelial Growth Factor (VegF) Signaling

HIV Vaccine

Ebola Virus

Autophagy

Coronavirus

Red Blood Cell Cytoskeleton

Myoglobin in a Whale Muscle Cell

Cellulose Synthase

JCVI-syn3A Minimal Cell

RecA and DNA

Abiogenesis

Excitatory and Inhibitory Synapses

Bacteriophage T4 Infection

Mycoplasma mycoides

Poliovirus Neutralization

CytoSkeleton

SARS-CoV-2 mRNA Vaccine

Biosites: Cytoplasm

Influenza Virus

Measles Virus Proteins

Casein Micelle and Fat Globule in Milk