Search

Top

March 2023

Jeannette Pickering Rankin (June 11, 1880 – May 18, 1973) was an American politician and women's rights advocate who became the first woman to hold federal office in the United States in 1917. She was elected to the U.S. House of Representatives as a Republican from Montana in 1916; she

Vernon Lyman Kellogg was an American entomologist, evolutionary biologist, and science administrator. He established the Department of Zoology at Stanford University in 1894, and served as the first permanent secretary of the National Research Council in Washington, DC. "Vernon Lyman Kellogg". Phthiraptera Myspecies. Retrieved 2023-03-07. Early life and influences His father

Peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1ι) is a protein that in humans is encoded by the PPARGC1A gene. PPARGC1A is also known as human accelerated region 20 (HAR20). It may, therefore, have played a key role in differentiating humans from apes. Esterbauer H, Oberkofler H, Krempler F, Patsch

The bile acid receptor (BAR), also known as farnesoid X receptor (FXR) or NR1H4 (nuclear receptor subfamily 1, group H, member 4), is a nuclear receptor that is encoded by the NR1H4 gene in humans. "Entrez Gene: NR1H4 nuclear receptor subfamily 1, group H, member 4". Forman BM, Goode E, Chen J,

20-Hydroxyecdysone (ecdysterone or 20E) is a naturally occurring ecdysteroid hormone which controls the ecdysis (moulting) and metamorphosis of arthropods. It is therefore one of the most common moulting hormones in insects, crabs, etc. It is also a phytoecdysteroid produced by various plants, including Cyanotis vaga, Ajuga turkestanica and Rhaponticum carthamoides where its purpose is presumably to disrupt the development and reproduction of

Bursicon (from the Greek bursikos, pertaining to tanning) is an insect hormone which mediates tanning in the cuticle of adult flies. Structure The molecular structure of the hormone has been characterized rather recently. Bursicon is a 30 kDa neurohormone heterodimeric protein which is encoded by CG13419 gene and made of two cysteine knot subunits, Burs-Îą and Burs-β. Dewey

Prothoracicotropic hormone (PTTH) was the first insect hormone to be discovered. The chemical symbol for prothoracicotropic hormone is (C64H102N16O19S2). It was originally described simply as "brain hormone" by early workers such as Stefan Kopeć (1922) and Vincent Wigglesworth (1934), who realized that ligation of the head of immature insects could prevent molting or pupation of

Fat body is a highly dynamic insect tissue composed primarily of storage cells. It is distributed throughout the insect's internal body cavity; the haemocoel, in close proximity to the epidermis, digestive organs and ovaries. Its main functions are nutrient storage and metabolism, for which it is commonly compared to a combination

Phytoecdysteroids are plant-derived ecdysteroids. Phytoecdysteroids are a class of chemicals that plants synthesize for defense against phytophagous (plant eating) insects. These compounds are mimics of hormones used by arthropods in the molting process known as ecdysis. When insects eat the plants with these

The halloween genes are a set of genes identified in Drosophila melanogaster that influence embryonic development. All of the genes code for cytochrome P450 enzymes in the ecdysteroidogenic pathway (biosynthesis of ecdysone from cholesterol). Ecdysteroids such as 20-hydroxyecdysone and ecdysone influence many of the morphological, physiological, biochemical changes that occur during molting in insects. Gilbert LI, Rybczynski R,

Chrysolina coerulans commonly known as the Blue Mint Beetle or Blue Mint Leaf Beetle. Coerulans is a form of the Latin noun caeruleus meaning "turning blue", or coeruleus meaning 'blue.' These beetles should not to be confused with the 'Green Mint Beetle' (or Chrysolina herbacea), as it is greener in appearance

Xylose is the first saccharide added to the serine or threonine in the proteoglycan type O-glycosylation, and, so, it is the first saccharide in biosynthetic pathways of most anionic polysaccharides such as heparan sulfate and chondroitin sulfate. Buskas, Therese; Ingale, Sampat; Boons, Geert-Jan (2006), "Glycopeptides as versatile tool for glycobiology", Glycobiology, 16 (8): 113R–36R, doi:10.1093/glycob/cwj125, PMID 16675547 Definitions Proteoglycans are proteins that are heavily glycosylated.

Xylose (cf. Ancient Greek: ξύλον, xylon, "wood") is a sugar first isolated from wood, and named for it. Xylose is classified as a monosaccharide of the aldopentose type, which means that it contains five carbon atoms and includes an aldehyde functional group. It is derived from hemicellulose, one of the main constituents of biomass.

Xylitol, a natural sugar alcohol, has gained popularity as a low-calorie sweetener and the peddlers have attributed numerous health benefits to their product. This post is going to focus on one that doesn't get nearly enough attention except in the