A Scientific Census

A millennial myosin census.

The past decade has seen a remarkable explosion in our knowledge of the size and diversity of the myosin superfamily. Since these actin-based motors are candidates to provide the molecular basis for many cellular movements, it is essential that motility researchers be aware of the complete set of myosins in a given organism. The availability of cDNA and/or draft genomic sequences from humans, D...

A census of protein repeats.

In this study, we analyzed all known protein sequences for repeating amino acid segments. Although duplicated sequence segments occur in 14 % of all proteins, eukaryotic proteins are three times more likely to have internal repeats than prokaryotic proteins. After clustering the repetitive sequence segments into families, we find repeats from eukaryotic proteins have little similarity with prok...

A Census of Marine Life

A humanity has begun to explore Mars, we are still colonizing our home planet. The 70 percent of Earth beneath the oceans is twice the area of Mars and the moon combined, but it is not nearly as well mapped. Ninety-five percent of Earth’s biosphere volume is in the oceans, where life has thrived for billions of years. At the genetic level, the oceans contain the vast majority of Earth’s biodive...

A census of mammalian imprinting.

Genomic imprinting, the parent-of-origin-specific silencing of a small proportion of genes, introduces a paradoxical vulnerability of hemizygosity into the diploid mammalian genome. To facilitate the evaluation of the biological and evolutionary significance of imprinting, we have collated a census of known imprinted genes, listing 83 transcriptional units of which 29 are imprinted in both huma...

Spatial Distribution Of Iranian Population In Canada: A Portrait Using The 2001 Census Data