A team of players plays the following game. After a strategy session, each player is randomly fitted with a blue or red hat. Then, without further communication, everybody can try to guess simultaneously his or her own hat color by looking at the hat colors of other players. Visibility is defined by a directed graph; that is, vertices correspond to players, and a player can see each player to w...

. This paper discusses black-hat and hat-nonterm, two tools for locating and diagnosing non-termination errors in Haskell programs. Both of these tools give a small trace which is intended to illuminate the cause of the non-termination error. black-hat analyses programs which contain black holes, a particularly restricted kind of non-termination error, while hatnonterm applies the approach used...

Cleavage stimulation factor (CstF) is a heterotrimeric protein complex essential for polyadenylation of mRNA precursors. The 77 kDa subunit, CstF-77, is known to mediate interactions with the other two subunits of CstF as well as with other components of the polyadenylation machinery. We report here the crystal structure of the HAT (half a TPR) domain of murine CstF-77, as well as its C-termina...

The topic is the hat problem in which each of n players is randomly fitted with a blue or red hat. Then everybody can try to guess simultaneously his own hat color by looking at the hat colors of the other players. The team wins if at least one player guesses his hat color correctly, and no one guesses his hat color wrong; otherwise the team loses. The aim is to maximize the probability of winn...

Multiple structural, biochemical and in vivo studies have solidified the role that histone acetyltransferases (HATs) play in regulation of the p53 pathway. 1 HATs are known to modulate p53 functions in many ways, from regulating its stability to promoting acetyla-tion-dependent interactions with DnA as well as various co-factors and chromatin modi-fiers. 1 Of these, p300, CBP, PCAF and Tip60 ar...