Molecule of the Month
January 2025

Assembly Line Polyketide Synthases

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

More

3D View:  7S6C

Style

Color

Spin

Learn
PDB data help explain fundamental biology, biomedicine, bioengineering/biotechnology, and energy sciences
Health Focus
Use PDB-101 resources to learn about the structural biology of athletics and well-being
Teach
The RCSB PDB Curricula provide authentic, hands-on teaching materials, individual and group activities and assessment suggestions
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.

Cytochrome c (unbound)

Transfer Ribonucleic Acid (tRNA)

Lysozyme (512)

Myohemerythrin

Oxyhemoglobin

B-DNA

Myoglobin Fold

Z-DNA

DPG-Hemoglobin Complex

TATA-Binding Protein (TBP)

A-DNA

Carboxypeptidase A

Aspartate Transcarbamoylase (ATCase)

DNA

Induced Lac Repressor

Ribonuclease S

Lac Repressor

Trypsin

Tomato Bushy Stunt Virus (TBSV)

Intermolecular Contacts in Hemoglobin S

Hemoglobin (1000)

Collagen

Deoxyribonucleic Acid (DNA)

Hemoglobin S

Crambin

Cytochrome c

Deoxyhemoglobin

Immunoglobulin G (IgG)

Myoglobin

Lysozyme (488)

Hemoglobin

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

Biosites: Muscle

Cellulose Synthase

Influenza Virus

Phage-based COVID-19 Vaccine

Blood

HIV Vaccine

Measles Virus Proteins

Escherichia coli Bacterium

Excitatory and Inhibitory Synapses

SARS-CoV-2 Fusion

Casein Micelle and Fat Globule in Milk

HIV-Infected Cell

Biosites: Blood Plasma

Lipid Droplets

Escherichia coli

Respiratory Droplet

Zika Virus

HIV in Blood Plasma

Coronavirus Life Cycle

Insulin Release

Influenza Vaccine

Transfer RNA and Gag Protein

Vascular Endothelial Growth Factor (VegF) Signaling

Model of a Mycoplasma Cell

SARS-CoV-2 mRNA Vaccine

Coronavirus

Myoglobin in a Whale Muscle Cell

Caulobacter Polar Microdomain

Immunological Synapse

Biosites: Red Blood Cell

Poliovirus Neutralization

Insulin Action

CytoSkeleton

Biosites: Nucleus

Bacteriophage T4 Infection

Red Blood Cell Cytoskeleton

Biosites: Basement Membrane

SARS-CoV-2 and Neutralizing Antibodies

Abiogenesis

Collagen and Extracellular Matrix

Chloroplast

Biosites: Cytoplasm

JCVI-syn3A Minimal Cell

Autophagy

Last Universal Common Ancestor

Kinetochore

Mycoplasma mycoides

Myelin

Ebola Virus

RecA and DNA