What is L-Pipecolic acid?

CAS No.: 3105-95-1

Molecular Formula: C6H11NO2

Molecular Weight: 129.16

Melting point: 272 °C(lit.)

Boiling point: 239.22°C (rough estimate)

Density: 1.1426 (rough estimate)

Appearance: White Powder

L-Pipecolic acid is a lysine metabolite; birthmark in its catabolism is complex in hyperpipecolic acidemia, cerebro-hepato-renal syndrome, neonatal access adrenoleukodystrophy, and baby Refsum disease.It is a metabolite of lysine. It has a role as a Human metabolite and a plant metabolite. It is a conjugate abject of a L-pipecolate. It is an enantiomer of a D-pipecolic acid. It is a tautomer of a L-pipecolic acid zwitterion.

L-pipecolic acid is a accustomed Human metabolite present in Human blood, area is present as the primary enantiomer of pipecolic acid. L-pipecolic acid is a circadian imino acid (contains both imino (> C=NH) and carboxyl produced during the abasement of lysine, accumulates in physique fluids of breed with ambiguous abiogenetic peroxisomal disorders, including Zellweger syndrome, neonatal adrenoleukodystrophy, and baby Refsum disease. L-pipecolic acid levels are aswell animated in patients with abiding alarmist diseases. L-pipecolic acid is the substrate of delta1-piperideine-2-carboxylate reductase in the alleyway of lysine degradation.

What is Fraser Broth Base?


Reaction of 5.49% w/v aqueous solution at 25°C. pH : 7.2±0.2


Cultural Response:

M1327: Cultural characteristics observed on addition of FD125I and FD141 after an incubation at 35-37°C for 24-48 hours.


Suspend 54.92 grams(equivalent weight of dehydrated medium per litre) in 1000 ml distilled water. Heat if necessary to dissolve the medium completely. Sterilize by autoclaving at 15 lbs pressure (121°C) for 15 minutes. Cool to 45-50°C and aseptically add rehydrated contents of 1 vial of Fraser Selective Supplement (FD125I) and 2 vials of Fraser Supplement (FD141) to 1000 ml medium for primary enrichment or 1 vial of each to 500 ml medium for secondary enrichment. Mix well and dispense as desired.

Fraser Broth Base with added supplement is recommended, as a primary as well as secondary enrichment medium, for the isolation and enumeration of Listeria monocytogenes from food and Human feeds.

What is Ecdysone?

Ecdysone is the above steroid hormone in insects and plays main roles in analogous adorning transitions such as abecedarian molting and alteration through its alive metabolite 20-hydroxyecdysone (20E). Although ecdysone is present throughout action in both males and females, its functions in developed analysis abide abundantly unknown. In this extraction we authenticate that ecdysone-mediated signaling in the developed is carefully complex in transitions amid the physiological states of beddy-bye and wakefulness. First, administering 20E to developed Drosophila melanogaster answer beddy-bye in a dose-dependent manner, and it did so primarily by altering the breadth of beddy-bye and deathwatch bouts afterwards affecting alive activity. Second, mutants for ecdysone amalgam displayed the “short-sleep phenotype,” and this was alleviated by administering 20E at the developed stage. Third, mutants for nuclear ecdysone receptors showed bargain sleep, and codicillary overexpression of wild-type ecdysone receptors in the developed augment bodies resulted in an isoform-specific access in sleep. Finally, autogenous ecdysone levels added afterwards beddy-bye deprivation, and mutants abnormal for ecdysone signaling displayed little beddy-bye rebound, suggesting that ecdysone is complex in homeostatic beddy-bye regulation. In ablaze of the contempo award that lethargus—a aeon at larval-stage transitions in the nematode bastard Caenorhabditis elegans—is a sleep-like state, our after-effects advance that beddy-bye is functionally and mechanistically affiliated to a genetically programmed, quiescent behavioral accompaniment during development.

Ecdysone is the steroidal prohormone of the above insect moulting hormone 20-hydroxyecdysone. It groups with its homologues the steroidal molting hormones in arthropods, but they aswell action in added phyla area they can play altered roles. Besides ecdysteroids arise in abounding plants mostly as aegis agents (toxins or antifeedants) adjoin herbivorous insects.