Certain Polycomb group (PcG) genes are themselves targets of PcG complexes. Two of these constitute the Drosophila Psc-Su(z)2 locus, a region whose chromatin is enriched for H3K27me3 and contains several putative Polycomb response elements (PREs) that bind PcG proteins. To understand how PcG mechanisms regulate this region, the repressive function of the PcG protein binding sites was analyzed u...

Polycomb group response elements (PREs) in Drosophila are DNA-elements that recruit Polycomb proteins (PcG) to chromatin and regulate gene expression. PREs are easily recognizable in the Drosophila genome as strong peaks of PcG-protein binding over discrete DNA fragments; many small but statistically significant PcG peaks are also observed in PcG domains. Surprisingly, in vivo deletion of the f...

A graph G is a star-k-PCG if there exists non-negative edge weighted star tree S and k mutually exclusive intervals $$I_1, I_2, \ldots , I_k$$ of reals such that each vertex corresponds to leaf an between two vertices in the distance their corresponding leaves lies $$I_1\cup I_2\cup \cup . These graphs are related different well-studied classes as PCGs multithreshold graphs. It well known for a...

PCG signal pattern classification, also known as auscultation pattern recognition, was one of the efficient computer-based methods applied to medical decision making. PCG Pattern recognition generally is interpreted in two ways. The most general definition includes recognition of patterns in any type of PCG dataset and is called uniform PCG pattern classification this discriminate peaks of hear...

PURPOSE To screen cytochrome P4501B1 (CYP1B1) for causative mutations in Omani patients with a clinical diagnosis of primary congenital glaucoma (PCG) METHODS: Nine PCG families were recruited for the study. All patients underwent detailed clinical examinations to confirm the diagnosis of PCG. The families of index patients were also examined. Genealogical information was obtained by pedigree a...

Polycomb group (PcG) and trithorax Group (trxG) proteins maintain the "OFF" and "ON" transcriptional states of HOX genes and other targets by modulation of chromatin structure. In Drosophila, PcG proteins are bound to DNA fragments called Polycomb group response elements (PREs). The prevalent model holds that PcG proteins bind PREs only in cells where the target gene is "OFF". Another model pos...

Polycomb-group (PcG) genes encode chromatin proteins involved in stable and heritable transcriptional silencing. PcG proteins participate in distinct multimeric complexes that deposit, or bind to, specific histone modifications (e.g., H3K27me3 and H2AK119ub1) to prevent gene activation and maintain repressed chromatin domains. PcG proteins are evolutionary conserved and play a role in processes...

The future of procedural content generation (PCG) lies beyond the dominant motivations of “replayability” and creating large environments for players to explore. This paper explores both the past and potential future for PCG, identifying five major lenses through which we can view PCG and its role in a game: data vs. process intensiveness, the interactive extent of the content, who has control ...

Posttranslational modifications of histone proteins represent a fundamental means to define distinctive epigenetic states and regulate gene expression during development and differentiation. Aberrations in various chromatin-modulation pathways are commonly used by tumors to initiate and maintain oncogenesis, including lymphomagenesis. Recently, increasing evidence has demonstrated that polycomb...

Polycomb group (PcG) proteins are transcriptional repressors, which regulate proliferation and cell fate decisions during development, and their deregulated expression is a frequent event in human tumours. The Polycomb repressive complex 2 (PRC2) catalyzes trimethylation (me3) of histone H3 lysine 27 (K27), and it is believed that this activity mediates transcriptional repression. Despite the r...