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.

Ribonuclease S

Transfer Ribonucleic Acid (tRNA)

A-DNA

Cytochrome c

B-DNA

Carboxypeptidase A

Immunoglobulin G (IgG)

Myohemerythrin

Hemoglobin S

Cytochrome c (unbound)

Z-DNA

Hemoglobin

Deoxyhemoglobin

Hemoglobin (1000)

Trypsin

Myoglobin Fold

Crambin

Myoglobin

Deoxyribonucleic Acid (DNA)

Collagen

TATA-Binding Protein (TBP)

Induced Lac Repressor

Aspartate Transcarbamoylase (ATCase)

Oxyhemoglobin

Lysozyme (488)

Tomato Bushy Stunt Virus (TBSV)

DPG-Hemoglobin Complex

Intermolecular Contacts in Hemoglobin S

Lysozyme (512)

Lac Repressor

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

Phage-based COVID-19 Vaccine

Biosites: Red Blood Cell

Transfer RNA and Gag Protein

Excitatory and Inhibitory Synapses

Coronavirus

HIV in Blood Plasma

Bacteriophage T4 Infection

Chloroplast

RecA and DNA

Last Universal Common Ancestor

Coronavirus Life Cycle

Myoglobin in a Whale Muscle Cell

Ebola Virus

Biosites: Cytoplasm

Lipid Droplets

Zika Virus

Respiratory Droplet

Vascular Endothelial Growth Factor (VegF) Signaling

Poliovirus Neutralization

Insulin Action

Blood

Immunological Synapse

Red Blood Cell Cytoskeleton

Mycoplasma mycoides

SARS-CoV-2 mRNA Vaccine

Collagen and Extracellular Matrix

Biosites: Blood Plasma

Cellulose Synthase

Escherichia coli Bacterium

Abiogenesis

Measles Virus Proteins

Biosites: Basement Membrane

SARS-CoV-2 and Neutralizing Antibodies

Escherichia coli

Biosites: Nucleus

SARS-CoV-2 Fusion

Biosites: Muscle

JCVI-syn3A Minimal Cell

Kinetochore

Casein Micelle and Fat Globule in Milk

HIV Vaccine

Caulobacter Polar Microdomain

Model of a Mycoplasma Cell

HIV-Infected Cell

Myelin

CytoSkeleton

Insulin Release

Influenza Virus

Autophagy