Molecule of the Month
November 2026

Artificial Metalloenzymes

Engineering enzymes to catalyze reactions never seen in nature

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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.

Crambin

Lac Repressor

Aspartate Transcarbamoylase (ATCase)

Induced Lac Repressor

TATA-Binding Protein (TBP)

Hemoglobin S

Oxyhemoglobin

DNA

Immunoglobulin G (IgG)

DPG-Hemoglobin Complex

Lysozyme (512)

Ribonuclease S

B-DNA

Intermolecular Contacts in Hemoglobin S

A-DNA

Cytochrome c

Deoxyhemoglobin

Lysozyme (488)

Transfer Ribonucleic Acid (tRNA)

Myoglobin

Trypsin

Hemoglobin

Myoglobin Fold

Cytochrome c (unbound)

Carboxypeptidase A

Myohemerythrin

Collagen

Deoxyribonucleic Acid (DNA)

Tomato Bushy Stunt Virus (TBSV)

Hemoglobin (1000)

Z-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

Last Universal Common Ancestor

CytoSkeleton

Autophagy

Coronavirus Life Cycle

Phage-based COVID-19 Vaccine

Respiratory Droplet

Caulobacter Polar Microdomain

HIV-Infected Cell

Biosites: Cytoplasm

Insulin Action

SARS-CoV-2 mRNA Vaccine

Lipid Droplets

Escherichia coli Bacterium

Zika Virus

Biosites: Muscle

Model of a Mycoplasma Cell

Influenza Vaccine

HIV Vaccine

Collagen and Extracellular Matrix

Biosites: Basement Membrane

Mycoplasma mycoides

Biosites: Red Blood Cell

Red Blood Cell Cytoskeleton

HIV in Blood Plasma

Casein Micelle and Fat Globule in Milk

Chloroplast

Measles Virus Proteins

JCVI-syn3A Minimal Cell

Biosites: Blood Plasma

Transfer RNA and Gag Protein

Kinetochore

Escherichia coli

Bacteriophage T4 Infection

Immunological Synapse

Myelin

SARS-CoV-2 and Neutralizing Antibodies

Coronavirus

Blood

Biosites: Nucleus

Poliovirus Neutralization

Ebola Virus

Myoglobin in a Whale Muscle Cell

Abiogenesis

RecA and DNA

Excitatory and Inhibitory Synapses

Cellulose Synthase

Insulin Release

Influenza Virus

Vascular Endothelial Growth Factor (VegF) Signaling

SARS-CoV-2 Fusion