Catalyst University
Heroin & Morphine | Metabolism & Mechanism of Action
Heroin & Morphine | Metabolism & Mechanism of Action
Catalyst University
Prions | Mechanisms of Parkinson's Disease, Parkin Prion, and L-DOPA Treatment
Parkinson's disease is a neurodegenerative prion disease in which affected individuals (e.g., Michael J Fox [comedian]; Muhammad Ali [Heavyweight champ]) suffer cell death in the substantia nigra and tremors. In this video, I will...
Catalyst University
The Electron Transport Chain: Complex III
The Electron Transport Chain: Complex III
Catalyst University
Biotechniques | Principles of Primer Design for Full Gene Amplification
In this video, I will show you how to design primers to amplify the entire gene during a routine PCR.
Schooling Online
IB Biology: Cell Biology - Prokaryotic Cells
Biology can be pretty dry. You’re stuck in a classroom studying a textbook full of boring definitions and complicated diagrams... That’s why we’re going on a field trip with Sally! She’s visiting a floating city in the Pacific Ocean –...
Catalyst University
Using UNIPROT & GenBank to Locate Gene Sequences [Given a Known Protein]
In this video, I show you: 1) How to search UniProt for a protein of interest given its name or code. AND 2) How to access its XM number and gene sequence from UniProt.
Catalyst University
Flattening the Curve | What Does it Really Mean?
This dissects in detail the meaning of the phrase, " Flattening the Curve", with respect to the COVID-19 pandemic.
Catalyst University
The Mechanism of Insulin Release by Pancreatic β-cells
This video dissects the mechanism by which the Pancreatic β-cells sense blood glucose levels and secrete a proportional amount of insulin through negative feedback.
Catalyst University
Analyzing Gene Sequence Results with BLAST
In this video, I show you how to... 1) obtain gene sequences from a sequencing company (e.g., GeneWiz) 2) Select which part of the sequence is best for analysis 3) analyze results with BLAST
Catalyst University
Amino Acid Biosynthesis | Biosynthesis of Tryptophan
In this video, I discuss the biosynthesis of the third aromatic amino acid, Tryptophan, from chorismate which occurs in the plastid (chloroplast).
Catalyst University
Action Potential Physiology (FULL VIDEO)
Action Potential Physiology (FULL VIDEO)
Catalyst University
Biotechniques | Basics of Making His-Tags & Nickel Affinity Chromatography
As always, the steps of putting a gene insert into vector/plasmid AND nickel affinity chromatography depend on your specific lab and protocol. Here, we look at the general theory of engineering a poly-His tagged protein and Ni affinity...
Catalyst University
Prions | Mechanisms of Huntington's Disease & the Huntingtin Prion
Huntington's disease is a neurodegenerative prion disease in which affected individuals suffer destruction of neurons in the basal nuclei (e.g., GABAergic neurons) and rapid, involuntary movements as a result. In this video, I will...
Catalyst University
Vitamins and Minerals | Vitamin C Biosynthesis & the GULO Pseudogene
Here, we explore the biosynthetic pathway for vitamin C (ascorbic acid) from glucuronic acid. Also, we explore inability of some organisms (e.g., humans) to perform this biosynthesis due to the GULO pseudogene.
Catalyst University
Prions | Mechanism of Kuru & Relation to Creutzfeldt-Jakob Disease
In this video, I discuss the mechanism of transmission and development of Kuru, a prion disease derived from cannibalism of brains infected by either Creutzfeldt-Jakob Disease (cCJD) or others with Kuru.
Catalyst University
Nucleotide Metabolism | Pyrimidine Biosynthesis (UTP & CTP)
Nucleotide Metabolism | Pyrimidine Biosynthesis (UTP & CTP)
Catalyst University
Biotechniques | General Theory of Western Blotting
As always, the steps of Western blotting depend on your lab and protocol. Here, we look at the general theory of the Western blot and what it is used for in the lab.
Catalyst University
Prions | Mechanisms and Theories of Alzheimers Disease (Amyloid & Tau)
Alzheimer's disease is a neurodegenerative prion disease in which affected individuals suffer destruction of cortical neurons due to accumulation of prions of both beta-amyloid and Tau type. In this video, I will explain the acquisition...
Catalyst University
Nucleotide Metabolism | Purine Biosynthesis 1: Up to IMP
Nucleotide Metabolism | Purine Biosynthesis 1: Up to IMP
Catalyst University
The Biotin Cycle | Mammalian Biotin (Vitamin B7) Metabolism & Processing
This video explores the biotin cycle. How is biotin attached to an enzyme? How is it removed? Is biotin recycled?
Catalyst University
Nucleotide Metabolism | Myokinase & the Purine Nucleotide Cycle
Nucleotide Metabolism | Myokinase & the Purine Nucleotide Cycle
Catalyst University
Biological Fate of Artificial Sweeteners | Erythritol & Sorbitol
Did you ever wonder what happens to artificial sweeteners when you consume them in food? In this video, we track the fates of two of them (erythritol and sorbitol). They cause loose stool, but they can have other functions as well.