The human genome encodes the blueprint of life, but the function of the vast majority of its nearly three billion bases is unknown. The Encyclopedia of DNA Elements (ENCODE) project has systematically mapped regions of transcription, transcription factor association, chromatin structure and histone modification. These data enabled us to assign biochemical functions for 80% of the genome, in particular outside of the well-studied protein-coding regions. Many discovered candidate regulatory elements are physically associated with one another and with expressed genes, providing new insights into the mechanisms of gene regulation. The newly identified elements also show a statistical correspondence to sequence variants linked to human disease, and can thereby guide interpretation of this variation. Overall, the project provides new insights into the organization and regulation of our genes and genome, and is an expansive resource of functional annotations for biomedical research.

/pdf/an-integrated-encyclopedia-of-dna-elements-in-the-human-52ukbi8ats.pdf

An integrated encyclopedia of DNA elements in the human genome

Molecular genetic maps are commonly constructed by analyzing the segregation of restriction fragment length polymorphisms (RFLPs) among the progeny of a sexual cross. Here we describe a new DNA polymorphism assay based on the amplification of random DNA segments with single primers of arbitrary nucleotide sequence. These polymorphisms, simply detected as DNA segments which amplify from one parent but not the other, are inherited in a Mendelian fashion and can be used to construct genetic maps in a variety of species. We suggest that these polymorphisms be called RAPD markers, after Random Amplified Polymorphic DNA.

/pdf/dna-polymorphisms-amplified-by-arbitrary-primers-are-useful-3dtvzw1rfi.pdf

DNA polymorphisms amplified by arbitrary primers are useful as genetic markers

Rapid improvements in sequencing and array-based platforms are resulting in a flood of diverse genome-wide data, including data from exome and whole-genome sequencing, epigenetic surveys, expression profiling of coding and noncoding RNAs, single nucleotide polymorphism (SNP) and copy number profiling, and functional assays. Analysis of these large, diverse data sets holds the promise of a more comprehensive understanding of the genome and its relation to human disease. Experienced and knowledgeable human review is an essential component of this process, complementing computational approaches. This calls for efficient and intuitive visualization tools able to scale to very large data sets and to flexibly integrate multiple data types, including clinical data. However, the sheer volume and scope of data pose a significant challenge to the development of such tools.

/pdf/integrative-genomics-viewer-b637hdfl11.pdf

Integrative genomics viewer

An integrated encyclopedia of DNA elements in the human genome.

CHAPTER 24 – Evolution of Protein Molecules

The kinetics of a conformational change which occurs in nucleosome core particles at about 1 mM ionic strength have been studied by observing changes in the fluorescence of labeled histone H3. The unfolding reaction is intramolecular since no concentration dependence is observed. However, the kinetics are unexpectedly complicated and reveal evidence of at least three relaxation times. It is possible to fit the kinetics observed under several conditions to a consistent four-state cyclic mechanism in which folded and unfolded forms can inter-convert by two parallel pathways, each involving a distinct intermediate. While the data are not sufficient to establish this mechanism as a unique choice, they exclude many simpler possibilities. The cyclic mechanism is quite reasonable in view of what is currently known about the structures of the folded and unfolded forms.

Kinetics of nucleosome unfolding at low ionic strength.

The occurrence of gaps in protein sequences.

Streptavidin-metallothionein chimeric proteins with biological recognition specificity in which the streptavidin moiety provides high affinity biotin binding and the metallothionein moiety provides a high affinity metal binding. The binding affinity of the streptavidin-metallothionein chimeric protein both for biotin and heavy metal ions allows specific incorporation into, conjugation with, or labelling of any biological material containing biotin with various heavy metal ions.

Recombinant streptavidin-metallothionein chimeric protein having biological recognition specificity

We developed a new model for initiating, coordinating, funding, and managing biomedical research projects. The concept involves engaging the patients with chronic conditions with no known cures into goal-oriented research activities. In this model, the patient seeks the help of a research organization to bring together a multidisciplinary team of research scientists and physicians to initiate research projects using the patient's grant funding, samples, as well as the management expertise. This model may be of interest to other research institutions because it has many benefits, including new sources of private research funding, when government funding is getting scarce, motivating scientists and physicians to work closely together on goal- and patient-oriented research projects, and using patients' management skills.

From personalized medicine to personalized science: uniting science and medicine for patient-driven, goal-oriented research.

The interaction of actinomycin D with (AT)nAGCT(AT)n (where n = 2, 3, or 4) was investigated using a combination of imino proton NMR and DNAse I digestion. The stoichiometry of the interaction appears to be one:one with the actinomycin chromophore intercalated between the two GC base pairs. This binding event facilitates the conversion of the flanking repetitive AT regions to an alternating conformation characterized by induced sensitivity of the ApT sequences to attack by DNAse I. The neighboring TpA sequences do not exhibit rate changes as a function of binding of the drug. The potential relevance of such ligand induced DNA structural alterations is discussed.

Actinomycin D facilitates transition of AT domains in molecules of sequence (AT)nAGCT(AT)n to a DNAse I detectable alternating structure

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