Molecule of the Month
January 2025

Assembly Line Polyketide Synthases

Large multienzyme complexes that synthesize diverse small molecules in a stepwise manner.

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3D View:  7S6C

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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.

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Cytochrome c

Deoxyhemoglobin

A-DNA

Hemoglobin S

Myoglobin

Hemoglobin

Lysozyme (488)

Z-DNA

Lysozyme (512)

Oxyhemoglobin

Aspartate Transcarbamoylase (ATCase)

Tomato Bushy Stunt Virus (TBSV)

Collagen

Hemoglobin (1000)

DNA

Transfer Ribonucleic Acid (tRNA)

Immunoglobulin G (IgG)

Carboxypeptidase A

Cytochrome c (unbound)

Deoxyribonucleic Acid (DNA)

Myohemerythrin

Lac Repressor

Myoglobin Fold

B-DNA

DPG-Hemoglobin Complex

Induced Lac Repressor

TATA-Binding Protein (TBP)

Intermolecular Contacts in Hemoglobin S

Trypsin

Crambin

Ribonuclease S

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

Myelin

Last Universal Common Ancestor

CytoSkeleton

Insulin Action

Zika Virus

Biosites: Nucleus

Escherichia coli

Bacteriophage T4 Infection

Poliovirus Neutralization

Influenza Vaccine

Biosites: Cytoplasm

SARS-CoV-2 Fusion

HIV-Infected Cell

Vascular Endothelial Growth Factor (VegF) Signaling

Mycoplasma mycoides

Biosites: Basement Membrane

Model of a Mycoplasma Cell

Escherichia coli Bacterium

Kinetochore

Red Blood Cell Cytoskeleton

Biosites: Red Blood Cell

Excitatory and Inhibitory Synapses

Chloroplast

Caulobacter Polar Microdomain

Transfer RNA and Gag Protein

Lipid Droplets

Insulin Release

Phage-based COVID-19 Vaccine

JCVI-syn3A Minimal Cell

Blood

RecA and DNA

HIV Vaccine

Cellulose Synthase

Influenza Virus

Myoglobin in a Whale Muscle Cell

Measles Virus Proteins

Biosites: Blood Plasma

Casein Micelle and Fat Globule in Milk

Autophagy

Coronavirus

SARS-CoV-2 and Neutralizing Antibodies

Respiratory Droplet

Coronavirus Life Cycle

Ebola Virus

HIV in Blood Plasma

Collagen and Extracellular Matrix

Abiogenesis

Immunological Synapse

SARS-CoV-2 mRNA Vaccine

Biosites: Muscle