Interaction of metal ions with uridine 5' -monophosphate: Existence of possible intramolecular interactions

855-860Interaction of Cu2+, NF+, Zn2+, Co2+, Mg2+, Ca2+, La3+, Pr3+, Nd3+, Gd3+ monophosphate (5'-UMP) as the primary ligand and glycine (gly), histidine (histi) and histamine (hista) as secondary ligands in 1: 1 and 1:1:1 ratio has been investigated potentiometrically at 35°C and 0.10 M (KNO3) ionic strength. The stability constants of binary (1:1) and ternary (1:1:1) systems are compared to assess the influence of charge of the metal ions and the nature of secondary ligands on the structure and stabilities of these complexes. The stabilisation of the ternary complexes is measured in terms of log K which is the difference between the stabilities of binary and ternary complexes in solution. Based on geometry of metal-5'-UMP complexes, coordination number of the metal ions concerned and the sterle factors, it has been concluded that O(4) is also involved in coordination in addition to the known phosphate binding in binary complexes. However, in ternary systems only phosphate is involved in metal coordination

A REVIEW ON THE PHARMACOLOGICAL PROFILE OF TEPHROSIA CALOPHYLLA

Tephrosia calophylla is commonly known as Adavivempali and dumpavempali. This plant is usually grows in the form of shrubs. It is widely distributed in tropical, subtropical and arid regions of the world and it is specifically found in Andhra Pradesh. The different parts of the plant like leaves, seeds and root of this plant have been used in Ayurvedic medicine. The plant has been used in treatment of different disorders and it is having the various activities like hepatoprotective, antidiabetic, antioxidant, antibacterial, antifungal, antidiuretic, and hypolipidemic properties with a wide range of safety. It has various active compounds. The pharmacologically active compounds that have been identified are Calophione -A, B and C, Tephcalostan, Tephcalostan A, Tephcalostan C and Betulinic acid. The present objective of the study is to discuss about the various chemical constituents and their pharmacological activities of the plant against numerous disorders. Key words: Tephrosia calophylla, Betulinic acid, Tephcalostan A and Adavivempali

YouTube and Food Allergy: An Appraisal of the Educational Quality of Information

Zufferey Nicolas. Hans van Ess, Politik und Gelehrsamkeit in der Zeit der Han. Die Alttext/Neutext-Kontroverse (Politique et lettres à l'époque Han. La controverse entre textes anciens et textes modernes), Wiesbaden, Harrassowitz, 1993. In: Études chinoises, vol. 16, n°1, Printemps 1997. pp. 145-153