Individual exchange rate forecasts and expected fundamentals

This paper suggests that exchange rates are related to economic fundamentals over medium-term horizons, such as a month or longer. We find from a large panel of individual professionals' forecasts that good exchange rate forecasts benefit from the proper understanding of fundamentals, specifically good interest rate forecasts. This relation is robust to individual fixed effects and further controls. Reassuringly, this relation is stronger during obvious fundamental misalignment. This occurs when exchange rates substantially deviate from their PPP values, when interest rate differentials are high and when exchange rates are less influenced by strong momentum. --Exchange Rate Determination,Individual Expectations,Macroeconomic Fundamentals

Posttranslational modifications of the retinoblastoma tumor suppressor protein as determinants of function

The retinoblastoma tumor suppressor protein (pRB) plays an integral role in G1-S checkpoint control and consequently is a frequent target for inactivation in cancer. The RB protein can function as an adaptor, nucleating components such as E2Fs and chromatin regulating enzymes into the same complex. For this reason, pRB\u27s regulation by posttranslational modifications is thought to be critical. pRB is phosphorylated by a number of different kinases such as cyclin dependent kinases (Cdks), p38 MAP kinase, Chk1/2, Abl, and Aurora b. Although phosphorylation of pRB by Cdks has been extensively studied, activities regulated through phosphorylation by other kinases are just starting to be understood. As well as being phosphorylated, pRB is acetylated, methylated, ubiquitylated, and SUMOylated. Acetylation, methylation, and SUMOylation play roles in pRB mediated gene silencing. Ubiquitinylation of pRB promotes its degradation and may be used to regulate apoptosis. Recent proteomic data have revealed that pRB is posttranslationally modified to a much greater extent than previously thought. This new information suggests that many unknown pathways affect pRB regulation. This review focuses on posttranslational modifications of pRB and how they influence its function. The final part of the review summarizes new phosphorylation sites from accumulated proteomic data and discusses the possibilities that might arise from this data. © The Author(s) 2013

Amiodarone in Pediatric Patients

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/75189/1/j.1540-8167.1986.tb01730.x.pd

Individual exchange rate forecasts and expected fundamentals

This paper suggests that exchange rates are related to economic fundamentals over medium-term horizons, such as a month or longer. We find from a large panel of individual professionals' forecasts that good exchange rate forecasts benefit from the proper understanding of fundamentals, specifically good interest rate forecasts. This relation is robust to individual fixed effects and further controls. Reassuringly, this relation is stronger during obvious fundamental misalignment. This occurs when exchange rates substantially deviate from their PPP values, when interest rate differentials are high and when exchange rates are less influenced by strong momentum

Exchange rate forecasts and expected fundamentals

Using a large panel of individual professionals' forecasts, this paper demonstrates that good exchange rate forecasts are related to a proper understanding of fundamentals, specifically good interest rate forecasts. This relationship is robust to individual fixed effects and further controls. Reassuringly, the relationship is stronger during phases when the impact from fundamentals is more obvious, e.g., when exchange rates substantially deviate from their PPP values. Finally, forecasters largely agree that an interest rate increase relates to a currency appreciation, but only good forecasters get expected interest rates right

Phosphorylation of the RB C-terminus regulates condensin II release from chromatin

The retinoblastoma tumor suppressor protein (RB) plays an important role in biological processes such as cell cycle control, DNA damage repair, epigenetic regulation, and genome stability. The canonical model of RB regulation is that cyclin-CDKs phosphorylate and render RB inactive in late G1/S, promoting entry into S phase. Recently, monophosphorylated RB species were described to have distinct cell-cycle-independent functions, suggesting that a phosphorylation code dictates diversity of RB function. However, a biologically relevant, functional role of RB phosphorylation at non-CDK sites has remained elusive. Here, we investigated S838/T841 dual phosphorylation, its upstream stimulus, and downstream functional output. We found that mimicking T-cell receptor activation in Jurkat leukemia cells induced sequential activation of downstream kinases including p38 MAPK and RB S838/ T841 phosphorylation. This signaling pathway disrupts RB and condensin II interaction with chromatin. Using cells expressing a WT or S838A/T841A mutant RB fragment, we present evidence that deficiency for this phosphorylation event prevents condensin II release from chromatin

Theta functions and arithmetic quotients of loop groups

In this paper we observe that isomorphism classes of certain metrized vector bundles over P^1-{0,infinity} can be parameterized by arithmetic quotients of loop groups. We construct an asymptotic version of theta functions, which are defined on these quotients. Then we prove the convergence and extend the theta functions to loop symplectic groups. We interpret them as sections of line bundles over an infinite dimensional torus, discuss the relations with loop Heisenberg groups, and give an asymptotic multiplication formula.Comment: 16 page