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.

Carboxypeptidase A

Cytochrome c (unbound)

Hemoglobin (1000)

Hemoglobin

Cytochrome c

Lac Repressor

A-DNA

Deoxyhemoglobin

Collagen

B-DNA

Myoglobin

Tomato Bushy Stunt Virus (TBSV)

Transfer Ribonucleic Acid (tRNA)

DPG-Hemoglobin Complex

Crambin

Aspartate Transcarbamoylase (ATCase)

Oxyhemoglobin

Deoxyribonucleic Acid (DNA)

Induced Lac Repressor

Lysozyme (488)

Hemoglobin S

Z-DNA

Intermolecular Contacts in Hemoglobin S

DNA

Ribonuclease S

Lysozyme (512)

Myoglobin Fold

Myohemerythrin

Trypsin

TATA-Binding Protein (TBP)

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

Vascular Endothelial Growth Factor (VegF) Signaling

JCVI-syn3A Minimal Cell

Escherichia coli

SARS-CoV-2 Fusion

Myoglobin in a Whale Muscle Cell

HIV-Infected Cell

Autophagy

Coronavirus Life Cycle

Biosites: Red Blood Cell

Biosites: Cytoplasm

Biosites: Blood Plasma

Model of a Mycoplasma Cell

Collagen and Extracellular Matrix

Escherichia coli Bacterium

Myelin

Biosites: Muscle

Casein Micelle and Fat Globule in Milk

Blood

Influenza Virus

Last Universal Common Ancestor

Excitatory and Inhibitory Synapses

Biosites: Basement Membrane

Lipid Droplets

Insulin Release

Mycoplasma mycoides

Zika Virus

Red Blood Cell Cytoskeleton

Insulin Action

HIV Vaccine

SARS-CoV-2 mRNA Vaccine

Ebola Virus

SARS-CoV-2 and Neutralizing Antibodies

Kinetochore

Abiogenesis

Caulobacter Polar Microdomain

CytoSkeleton

Biosites: Nucleus

Phage-based COVID-19 Vaccine

Influenza Vaccine

Transfer RNA and Gag Protein

RecA and DNA

Immunological Synapse

Respiratory Droplet

Poliovirus Neutralization

HIV in Blood Plasma

Cellulose Synthase

Measles Virus Proteins

Bacteriophage T4 Infection

Chloroplast

Coronavirus