As workhorses of the cell ... similar functions within the cell. Proteins from the same family also often have long stretches of similar amino acid sequences within their primary structure.

The basic structure of a plant cell is shown below. Photosynthesis relies on many structures in the cell all working together, each playing its role. The diagram below shows the same plant cell ...

Some of the body's cells ... Biology, may improve some cancer treatments already in development, says first author Rui Gong, a research associate in the lab. "Understanding the structure of ...