Higher plant phosphoenolpyruvate carboxylase (PEPC) is subject to in vivo phosphorylation of a regulatory serine located in the N-terminal domain of the protein. Studies using synthetic peptide substrates and mutated phosphorylation domain photosynthetic PEPC (C4 PEPC) suggested that the interaction of phosphoenolpyruvate carboxylase kinase (PEPCk) with its target was not restricted to this dom...

A gram-scale synthesis of terminally-branched iso-fatty acids (iso-C12-C19) was developed commencing with methyl undec-10-enoate (methyl undecylenate) (for iso-C12-C14) or the C15 and C16 lactones pentadecanolide (for iso-C15-C17) and hexadecanolide (for iso-C18-C19). Central to the approaches outlined is the two-step construction of the terminal isopropyl group through addition of methylmagnes...

Abstract Research Issue In this commentary, we sought to highlight research opportunities in terms of how governance mechanisms, accounting regulation, and corporate disclosure were affected by Covid‐19 (C19) shaped the economic landscape post‐C19 period. Insights The outbreak C19 triggered significant researchers' interests fields business economics for two main reasons: first, social conseque...

The dorsal gland secretions of captive-reared male and female Chacoan peccaries (Catagonus wagneri) were analyzed by gas chromatography-mass spectrometry. C8-C19 carboxylic acids, squalene, cholesterol, cholestanol, and cholest-7-en-3-ol were present in both males and females. Heptylbenzene, C14-C18 methyl esters, and an isomer of springene were observed in males. C15-C19 aldehydes were observe...

The fascinating thing about the 'finding that measures taken to contain this pandemic in transport system have, on one hand, achieved a very short time precisely those effects qualified scientists have been demanding from politicians for decades and, other fact it has not possible realize same successes without C19, although human lives, hygiene and health are at stake both areas. Unfortunately...

Two new lycoctonine type C19-diterpenoid alkaloids, swatinine-A (1), and swatinine-B (2), along with four known C19-diterpenoid alkaloids, foresticine (3), neoline (4), delvestine (5), and chasmanine (6), were isolated from the aerial parts of the Aconitum laeve Royle. The structures of compounds 1 and 2 were deduced on the basis of spectroscopic techniques (EI-MS, HREI-MS, H NMR, C NMR, HMQC, ...

Three new C19-norditerpenoid alkaloids (1-3), along with two known C19-norditerpenoid alkaloids (4-5) have been isolated from Aconitum szechenyianum. Their structures were established by extensive spectroscopic techniques and chemical methods as szechenyianine A (1), szechenyianine B (2), szechenyianine C (3), N-deethyl-3-acetylaconitine (4), and N-deethyldeoxyaconitine (5). Additionally, compo...