The cyclin D1.CDK4-pRb (retinoblastoma protein) pathway plays a central role in the cell cycle, and its deregulation is correlated with many types of cancers. As a major drug target, we purified dimeric cyclin D1.CDK4 complex to near-homogeneity by a four-step procedure from a recombinant baculovirus-infected insect culture. We optimized the kinase activity and stability and developed a reprodu...

Purified al-proteolytic inhibitor from human plasma was shown to inhibit trypsin, chymotrypsin, plasmin, and thrombin. This inhibitor is probably identical with the inhibitor previously known as serum trypsin inhibitor, al-antitrypsin, or antiplasmin. The enzymes were affected by the inhibitor via two different mechanisms. Trypsin and chymotrypsin reacted instantaneously in stoichiometric manne...

A time scale analysis of the homogeneous flame inhibition problem is carried out to identify main parameters controlling gas phase chemical interaction alkali metal inhibitors with chemistry. First, kinetic sub-models for metals are analyzed show that a simplified 2-step cycle can capture essential features this interaction. Second, it shown auto-catalytic, which explains high efficiency in inh...

Urease inhibitor [N-(n-butyl) thiophosphoric triamide (NBPT)] and nitrification (NI) (3,4-dimethylpyrazole phosphate) have been used to reduce nitrogen (N) losses from urea-based fertilizers. This study evaluated the effect of temperature, NBPT, NI on kinetic thermodynamic properties urea hydrolysis in six soils. Soils were amended (250 kg N·ha ?1 ) with (UR), NBPT treated (UR ), or + DI incuba...

allopurinol, the xanthine oxidase inhibitor, is the only drug available for the treatment of gout. we examined the xanthine oxidase inhibitory activity of some commercially available flavonoids such asepigallocatechin, acacatechin, myricetin, naringenin, daidzein and glycitein by virtual screening and in-vitro studies. the interacting residues within the complex model and their contact types we...

Lavendustin-A was reported to be a potent tyrosine kinase inhibitor of the epidermal growth factor (EGF) receptor (Onoda, T., Iinuma, H., Sasaki, Y., Hamada, M., Isshibi, K., Naganawa, H., Takeuchi, T., Tatsuta, K., and Umezawa, K. (1989) J. Nat. Prod. 52, 1252-1257). Its inhibition kinetics was studied in detail using the baculovirus-expressed recombinant intracellular domain of the EGF recept...

Allopurinol, the xanthine oxidase inhibitor, is the only drug available for the treatment of gout. We examined the xanthine oxidase inhibitory activity of some commercially available flavonoids such asepigallocatechin, acacatechin, myricetin, naringenin, daidzein and glycitein by virtual screening and in-vitro studies. The interacting residues within the complex model and their contact types we...

Allopurinol, the xanthine oxidase inhibitor, is the only drug available for the treatment of gout. We examined the xanthine oxidase inhibitory activity of some commercially available flavonoids such asepigallocatechin, acacatechin, myricetin, naringenin, daidzein and glycitein by virtual screening and in-vitro studies. The interacting residues within the complex model and their contact types we...

E-learning is popularized so fast and Collaborative Learning (CL) becomes so important an instructional strategy. There are huge Group Session (GS) texts needed to be analyzed to evaluate CL, thus the automatic or semi-automatic methods of analyzing the GS texts become very important. In this paper we present a method called Interaction Analysis depended on Knowledge Extraction (IAKE) to analyz...

We discuss various properties of the ground state of a Bose-condensed dilute gas confined by an external potential. We devote particular attention to the role played by the interaction in determining the kinetic energy of the system and the aspect ratio of the velocity distribution. The structure of the wave function near the classical turning point is discussed and the drawback of the Thomas-F...