Have you ever been sick with strep-throat? Pneumonia? Food poisoning? A UTI? You visit your doctor and she says your illness is a bacterial infection, so she is prescribing you some antibiotics. She instructs you to take your entire round of antibiotics, all the way to the last dose, even if you start feeling better. …
Meet Amyloid Precursor Protein!
It often goes by the nickname "APP" for short. APP has been extensively studied because of its association with Alzheimer's disease. Despite being studied so intensely, APP's role is complex and there is a lot that researchers just have not figured out yet. (But I will share some of what we do know!) APP lives …
What are all those squiggly lines you keep showing us? (How to “Read” a Protein Structure)
If you look at any of my posts introducing a specific protein, you will always see an image like this one: 3D Model of Hemoglobin Maybe you see these images and ask, "What are all these squiggly lines you keep showing us?" These squiggly lines are three-dimensional representations of proteins. Every protein has a structure, …
Meet Keratin!
You have probably heard of keratin before--it is the protein that makes up your hair and nails. It also makes up hooves, antlers, horns, and feathers. It is classified as a filamentous protein (because it forms filaments). Keratin is found in structures such as horns, hooves, and hair. Keratin filaments look a bit like rope …
Meet Rubisco!
Rubisco is found in the chloroplasts of plant cells where it plays a key role in photosynthesis. Rubisco works in the chloroplasts of plant cells Remember that photosynthesis is the process plants (and some bacteria) use to build glucose sugar molecules using CO2 and energy from light. Plants can't just stitch a bunch of raw …
Meet DNA Polymerase!
DNA Polymerase lives and works in the cell's nucleus where it is the star of DNA replication. In the cell nucleus, DNA Polymerase makes a copy of DNA to prepare for cell division. When a cell divides into two cells, it needs to make a copy of its DNA so that each resulting cell has …
Meet E Cadherin!
E Cadherin is a membrane protein that helps cells stick to other cells at cell junctions. Cell junctions are critical for forming and maintaining healthy tissues. Could you imagine if your skin cells suddenly couldn't stick together?! E Cadherin is one of the proteins that makes sure our skin, and every other part of our …
What is a protein?? (P.S. science is for you)
This blog is all about proteins, but what even is a protein? Think about how you would define "protein" for a moment. Feel free to comment and share your definition. Now that it's in the open, throw it in the garbage. If you ask Google to "define protein," this is what you will find: "Pro•tein …
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Meet ATP Synthase!
ATP synthase is a really, really important protein for life. That's because it makes ATP molecules, which are like the energy currency of the molecular world. (Essentially, ATP = Energy!) As you may expect, ATP synthase works in the inner membranes of mitochondria. If mitochondria are the powerhouses of the cell, ATP synthase is the …
Meet Na+/K+ ATPase!
Its name is pronounced "sodium-potassium A. T. P. ay-ss" but it more commonly goes by "sodium-potassium pump" or "Na+/K+ pump." It works at the cell membrane and is named for its job: pumping sodium and potassium ions using energy from ATP. Animal cell The amounts of these positively-charged ions in the cell needs to stay …
