Biosynthesis - Catabolism and Excretion of Cortical Hormone Secretory

Auxin Biosynthesis and Catabolism

Auxin concentrations in plants are tightly regulated through both biosynthesis and degradation. In the past few years, much progress was made in the area of auxin metabolism. Genetic and biochemical studies in Arabidopsis unequivocally established a complete tryptophan (Trp)-dependent two-step auxin biosynthesis pathway in which Trp is first converted into indole-3-pyruvate (IPA) by the TAA fam...

Catabolism and excretion of fibrinopeptide-A.

Mean urinary excretion of fibrinopeptide-A (FPA) in 51 normal individuals ranging in age from 7 to 92 yr was 1 .67 ± .1 (SE) tg/24 hr with no significant differences related to age or sex, though children tended to excrete less FPA. Calculation suggests that FPA urinary excretion represents O.2%-O.5% of total FPA released from fibrinogen/24 hr. Urinary FPA eluted from gel permeation columns in ...

Gibberellin signaling: biosynthesis, catabolism, and response pathways.

Neil Olszewski, a,1 Tai-ping Sun, b and Frank Gubler c a Department of Plant Biology and Plant Molecular Genetics Institute, University of Minnesota, St. Paul, Minnesota 551081095 b Developmental, Cell, and Molecular Biology Group, Department of Biology, Duke University, Durham, North Carolina 27708-1000 c Commonwealth Scientific and Industrial Research Organization, Plant Industry, GPO Box 160...

Haem biosynthesis and excretion of porphyrins

20 Lluis JM, Colell A, Garcia-Ruiz C et al. (2003) Acetaldehyde impairs mitochondrial glutathione transport in HepG2 cells through endoplasmic reticulum stress. Gastroenterology 124, 708–724 21 Mari M, Colell A, Morales A et al. (2004) Acidic sphingomyelinase downregulates the liver-specific methionine adenosyltransferase 1A, contributing to tumor necrosis factor-induced lethal hepatitis. J Cli...

Urinary growth hormone excretion.

Distribution, biosynthesis and catabolism of methylxanthines in plants.

Methylxanthines and methyluric acids are purine alkaloids that are synthesized in quantity in a limited number of plant species, including tea, coffee and cacao. This review summarizes the pathways, enzymes and related genes of caffeine biosynthesis. The main biosynthetic pathway is a sequence consisting of xanthosine → 7-methylxanthosine → 7-methylxanthine → theobromine → caffeine. Catabolism ...