Molecule of the Month
July 2025

Capturing Beta-Lactamase in Action

Researchers visualize the mechanism of antibiotic resistance

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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.

Induced Lac Repressor

Carboxypeptidase A

TATA-Binding Protein (TBP)

Myohemerythrin

Cytochrome c (unbound)

Myoglobin

Hemoglobin

B-DNA

Cytochrome c

Crambin

Intermolecular Contacts in Hemoglobin S

Ribonuclease S

Transfer Ribonucleic Acid (tRNA)

Oxyhemoglobin

Collagen

Deoxyhemoglobin

Immunoglobulin G (IgG)

Tomato Bushy Stunt Virus (TBSV)

Hemoglobin (1000)

Lysozyme (512)

Aspartate Transcarbamoylase (ATCase)

Trypsin

Myoglobin Fold

Deoxyribonucleic Acid (DNA)

A-DNA

DNA

DPG-Hemoglobin Complex

Lac Repressor

Z-DNA

Hemoglobin S

Lysozyme (488)

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

Red Blood Cell Cytoskeleton

SARS-CoV-2 mRNA Vaccine

Biosites: Muscle

Biosites: Cytoplasm

Biosites: Red Blood Cell

SARS-CoV-2 Fusion

Insulin Action

HIV-Infected Cell

Vascular Endothelial Growth Factor (VegF) Signaling

Model of a Mycoplasma Cell

SARS-CoV-2 and Neutralizing Antibodies

Coronavirus

Cellulose Synthase

Coronavirus Life Cycle

Immunological Synapse

Last Universal Common Ancestor

Biosites: Blood Plasma

RecA and DNA

Excitatory and Inhibitory Synapses

Influenza Virus

Influenza Vaccine

Kinetochore

Lipid Droplets

Respiratory Droplet

JCVI-syn3A Minimal Cell

Blood

Chloroplast

Biosites: Basement Membrane

Abiogenesis

Collagen and Extracellular Matrix

Caulobacter Polar Microdomain

CytoSkeleton

HIV in Blood Plasma

Myoglobin in a Whale Muscle Cell

Biosites: Nucleus

HIV Vaccine

Mycoplasma mycoides

Phage-based COVID-19 Vaccine

Autophagy

Insulin Release

Ebola Virus

Transfer RNA and Gag Protein

Bacteriophage T4 Infection

Zika Virus

Poliovirus Neutralization

Measles Virus Proteins

Myelin

Casein Micelle and Fat Globule in Milk

Escherichia coli Bacterium

Escherichia coli