Related Experiment Video

Updated: Jul 11, 2026

Modifying Baculovirus Expression Vectors to Produce Secreted Plant Proteins in Insect Cells
09:14

Modifying Baculovirus Expression Vectors to Produce Secreted Plant Proteins in Insect Cells

Published on: August 20, 2018

Use of Bacillus brevis for synthesis and secretion of Des-B30 single-chain human insulin precursor

M Koh1, H Hanagata, S Ebisu

  • 1Institute for Applied Life Science, University of East Asia, Graduate School, Shimonoseki-shi, Yamaguchi, Japan.

Bioscience, Biotechnology, and Biochemistry
|July 6, 2000
PubMed

More Related Videos

Bacterial Peptide Display for the Selection of Novel Biotinylating Enzymes10:43

Bacterial Peptide Display for the Selection of Novel Biotinylating Enzymes

Published on: October 3, 2019

An Improved Protocol to Purify and Directly Mono-Biotinylate Recombinant BDNF in a Tube for Cellular Trafficking Studies in Neurons13:46

An Improved Protocol to Purify and Directly Mono-Biotinylate Recombinant BDNF in a Tube for Cellular Trafficking Studies in Neurons

Published on: July 11, 2020

Related Concept Videos

Recombinant DNA01:09

Recombinant DNA

Overview
Insulin Secretory Vesicles01:05

Insulin Secretory Vesicles

Insulin secretory vesicles release insulin to stimulate blood glucose uptake and regulate carbohydrate metabolism. When the blood glucose levels increase, glucose enters the pancreatic β-islet cells through glucose transporters. Once inside, glucose is metabolized through glycolysis, the citric acid cycle, and the electron transport chain, producing ATP. This increase in ATP concentration closes ATP-sensitive potassium channels, leading to depolarization of the membrane and the opening of...
The Central Dogma01:20

The Central Dogma

The central dogma explains the flow of genetic information from DNA nucleotides to the amino acid sequence of proteins.
RNA is the Missing Link Between DNA and Proteins
In the early 1900s, scientists discovered that DNA stores all the information needed for cellular functions and that proteins perform most of these functions. However, the mechanisms of converting genetic information into functional proteins remained unknown for many years. Initially, it was believed that a single gene is...
Insulin: Biosynthesis, Chemistry, and Preparation01:25

Insulin: Biosynthesis, Chemistry, and Preparation

The endoplasmic reticulum (ER) of pancreatic β-cells synthesizes preproinsulin, which consists of a signal peptide, A and B chains, and a C-peptide. Preproinsulin is then cleaved and folded into proinsulin, which translocates to the Golgi apparatus for sorting and packaging into secretory granules. In these granules, enzymatic clipping generates insulin and C-peptide.
Damage or functional impairment of β-cells inhibits insulin production, leading to diabetes. Diabetes treatment primarily uses...
Production of Pharmaceuticals01:30

Production of Pharmaceuticals

Industrial insulin production uses genetically engineered E. coli expressing a proinsulin gene controlled by a tryptophan promoter and containing a methionine linker for later cleavage. The cells also carry ampicillin resistance for selective growth. Seed cultures are stored at −80 °C and production begins by thawing a small amount to inoculate starter cultures, which are progressively scaled to a 50,000-L bioreactor. In the bioreactor, E. coli grow in nutrient-rich media under sterile, tightly...