The proteasome is a large, highly conserved protein complex whose main function is to enzymatically degrade target proteins. The eukaryotic proteasome houses six protease sites that are located deep w...

Protein translocation is the process by which peptides are transported across a membrane bilayer. Translocation of proteins across the membrane of the endoplasmic reticulum (ER) is know to occur in on...

Zooplankton

Protein translocation is the process by which peptides are transported across a membrane bilayer. Translocation of proteins across the membrane of the endoplasmic reticulum (ER) is know to occur in on...

Scanning electron micrograph of a fragment of surface of diatom cell. Diatoms have a silica cell wall also called a frustule that has regularly repeating features.

Darkfield illumination image of a diatom from a oamaru fossil. Honorable Mention, 2010 Olympus BioScapes Digital Imaging Competition®.

Scanning electron micrograph of a diatom frustule. The frustule is the hard and porous cell wall or external layer of diatoms.

Differential interference contrast image of a diatom with tiny bits of shell from other diatoms on it. Honorable Mention, 2010 Olympus BioScapes Digital Imaging Competition®.

Scanning electron micrograph of a diatom showing the two silica based frustule (cell walls). Image also illustrates the regular pattern on the frustule.

Scanning electron micrograph of a diatom frustule. The frustule is the hard and porous cell wall or external layer of diatoms.