Molecule of the Month
March 2026

Lenacapavir

A potent and long-acting drug that targets the HIV capsid

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PDB data help explain fundamental biology, biomedicine, bioengineering/biotechnology, and energy sciences
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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.

Myoglobin

Deoxyhemoglobin

Oxyhemoglobin

Ribonuclease S

Myoglobin Fold

Collagen

Lysozyme (512)

Carboxypeptidase A

A-DNA

Cytochrome c (unbound)

B-DNA

Hemoglobin (1000)

Crambin

Hemoglobin

Lac Repressor

Myohemerythrin

Lysozyme (488)

DNA

Intermolecular Contacts in Hemoglobin S

Z-DNA

Tomato Bushy Stunt Virus (TBSV)

Immunoglobulin G (IgG)

Trypsin

DPG-Hemoglobin Complex

Induced Lac Repressor

Transfer Ribonucleic Acid (tRNA)

TATA-Binding Protein (TBP)

Cytochrome c

Hemoglobin S

Aspartate Transcarbamoylase (ATCase)

Deoxyribonucleic Acid (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

Influenza Vaccine

SARS-CoV-2 Fusion

Myelin

Biosites: Cytoplasm

Model of a Mycoplasma Cell

Excitatory and Inhibitory Synapses

SARS-CoV-2 and Neutralizing Antibodies

Insulin Action

Autophagy

Phage-based COVID-19 Vaccine

Immunological Synapse

Insulin Release

HIV Vaccine

Transfer RNA and Gag Protein

Chloroplast

Biosites: Basement Membrane

Lipid Droplets

Escherichia coli Bacterium

Biosites: Muscle

Coronavirus

Ebola Virus

Casein Micelle and Fat Globule in Milk

Red Blood Cell Cytoskeleton

Last Universal Common Ancestor

CytoSkeleton

Kinetochore

Collagen and Extracellular Matrix

Mycoplasma mycoides

Respiratory Droplet

Biosites: Red Blood Cell

RecA and DNA

JCVI-syn3A Minimal Cell

Myoglobin in a Whale Muscle Cell

Blood

Abiogenesis

Influenza Virus

Escherichia coli

Coronavirus Life Cycle

Caulobacter Polar Microdomain

Measles Virus Proteins

Vascular Endothelial Growth Factor (VegF) Signaling

HIV in Blood Plasma

Cellulose Synthase

HIV-Infected Cell

Biosites: Blood Plasma

Bacteriophage T4 Infection

Biosites: Nucleus

SARS-CoV-2 mRNA Vaccine

Zika Virus

Poliovirus Neutralization