JCVI-syn3A Minimal Cell
Insulin Release
HIV Vaccine
Caulobacter Polar Microdomain
HIV-Infected Cell
Collagen and Extracellular Matrix
Escherichia coli Bacterium
Myoglobin in a Whale Muscle Cell
Cellulose Synthase
Transfer RNA and Gag Protein
RecA and DNA
Casein Micelle and Fat Globule in Milk
Model of a Mycoplasma Cell
Phage-based COVID-19 Vaccine
Immunological Synapse
SARS-CoV-2 Fusion
Red Blood Cell Cytoskeleton
SARS-CoV-2 and Neutralizing Antibodies
Respiratory Droplet
SARS-CoV-2 mRNA Vaccine
Coronavirus Life Cycle
Influenza Vaccine
Measles Virus Proteins
Lipid Droplets
Poliovirus Neutralization
Excitatory and Inhibitory Synapses
Last Universal Common Ancestor
Zika Virus
Insulin Action
Ebola Virus
Mycoplasma mycoides
Vascular Endothelial Growth Factor (VegF) Signaling
Biosites: Muscle
Biosites: Basement Membrane
Biosites: Red Blood Cell
Biosites: Nucleus
Biosites: Blood Plasma
Biosites: Cytoplasm
Escherichia coli
HIV in Blood Plasma

Molecular Landscapes by David S. Goodsell

Myoglobin in a Whale Muscle Cell, 2021

Acknowledgement: Illustration by David S. Goodsell, RCSB Protein Data Bank. doi: 10.2210/rcsb_pdb/goodsell-gallery-032

Whale muscles contain many myoglobin molecules (red) to store oxygen during their deep dives. This cross section shows the space between two muscle sarcomeres, which are shown at right and left with actin thin filaments in yellow and myosin thick filaments in tan. The space also includes many glycolytic enzymes and other other enzymes involved in energy production (blue) and glycogen granules (purple). A tubule of the sarcoplasmic reticulum is shown at the bottom, with many calcium pumps (blue molecules in the membrane) and calcium storage proteins (green) that concentrate calcium inside, for use in control of muscle contraction. This painting was created as part of the celebration of the 50th anniversary of the Protein Data Bank.

Selected References

  • Gros G, Wittenberg BA & Jue T (2010) Myoglobin's old and new clothes: from molecular structure to function in living cells. J. Exp. Biol. 213, 2713-2725.
  • Maughan DW, Henkin JA & Vigoreaux JO (2005) Concentrations of glycolytic enzymes and other cytosolic proteins in the diffusible fraction of a vertebrate muscle proteome. Mol. Cell. Proteomics 4, 1541-1549.