The DNA sequence of human chromosome 22

TLDR

Knowledge of a complete genomic DNA sequence enables systematic definition of genetic components, access to all gene structures and regulatory elements, and provides a permanent resource for further biological studies and evolutionary comparisons. The next step is to obtain the complete sequence of the entire human genome. Here we report the sequence of the euchromatic part of human chromosome 22, consisting of 12 contiguous segments spanning 33.4 megabases and containing at least 545 genes and 134 pseudogenes. The euchromatic sequence of chromosome 22 comprises 33.4 megabases, 545 genes, 134 pseudogenes, and reveals complex chromosomal landscapes that will be seen in the rest of the genome.

Abstract

Knowledge of the complete genomic DNA sequence of an organism allows a systematic approach to defining its genetic components. The genomic sequence provides access to the complete structures of all genes, including those without known function, their control elements, and, by inference, the proteins they encode, as well as all other biologically important sequences. Furthermore, the sequence is a rich and permanent source of information for the design of further biological studies of the organism and for the study of evolution through cross-species sequence comparison. The power of this approach has been amply demonstrated by the determination of the sequences of a number of microbial and model organisms. The next step is to obtain the complete sequence of the entire human genome. Here we report the sequence of the euchromatic part of human chromosome 22. The sequence obtained consists of 12 contiguous segments spanning 33.4 megabases, contains at least 545 genes and 134 pseudogenes, and provides the first view of the complex chromosomal landscapes that will be found in the rest of the genome.