Molecule of the Month
December 2025

FOXP3

A master transcriptional regulator of immune tolerance

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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.

A-DNA

Immunoglobulin G (IgG)

Crambin

Oxyhemoglobin

Deoxyhemoglobin

Carboxypeptidase A

Z-DNA

Hemoglobin (1000)

Myohemerythrin

Hemoglobin S

Deoxyribonucleic Acid (DNA)

TATA-Binding Protein (TBP)

Lac Repressor

Hemoglobin

Ribonuclease S

Lysozyme (512)

Cytochrome c

Tomato Bushy Stunt Virus (TBSV)

Myoglobin

Intermolecular Contacts in Hemoglobin S

Aspartate Transcarbamoylase (ATCase)

B-DNA

DPG-Hemoglobin Complex

Transfer Ribonucleic Acid (tRNA)

Collagen

Lysozyme (488)

Trypsin

Induced Lac Repressor

Cytochrome c (unbound)

Myoglobin Fold

DNA

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

Myoglobin in a Whale Muscle Cell

RecA and DNA

Biosites: Blood Plasma

Biosites: Basement Membrane

Abiogenesis

Influenza Virus

Model of a Mycoplasma Cell

Vascular Endothelial Growth Factor (VegF) Signaling

Immunological Synapse

Blood

Phage-based COVID-19 Vaccine

Influenza Vaccine

Respiratory Droplet

Mycoplasma mycoides

Zika Virus

Insulin Action

Myelin

Biosites: Red Blood Cell

HIV in Blood Plasma

Escherichia coli Bacterium

Poliovirus Neutralization

Biosites: Nucleus

Coronavirus

Insulin Release

Kinetochore

Ebola Virus

Autophagy

SARS-CoV-2 and Neutralizing Antibodies

Caulobacter Polar Microdomain

HIV Vaccine

SARS-CoV-2 mRNA Vaccine

Excitatory and Inhibitory Synapses

JCVI-syn3A Minimal Cell

Cellulose Synthase

Escherichia coli

Collagen and Extracellular Matrix

Transfer RNA and Gag Protein

Red Blood Cell Cytoskeleton

Chloroplast

HIV-Infected Cell

Lipid Droplets

Biosites: Cytoplasm

SARS-CoV-2 Fusion

Bacteriophage T4 Infection

Casein Micelle and Fat Globule in Milk

Coronavirus Life Cycle

CytoSkeleton

Measles Virus Proteins

Biosites: Muscle

Last Universal Common Ancestor