GENOME ANNOTATION

Genome annotation is defined as the process of identifying the locations of genes and all of the coding regions in a genome .Here annotation indicates a note added by way of explanation or commentary. Once a genome is sequenced, it needs to be annotated to make sense of it.So genome annotation is the process of attaching biological information to sequences.

This process is of two steps:

1- identifying elements on the genome.

2- attaching biological information to these elements.

This field is an active area of investigation and involves a number of different organizations in the life science community which publish the results of their efforts in publicly available biological databases accessible via the web and other electronic means and a variety of software tools have been developed to permit scientists to view and share genome annotations.If we go further deep into this field we have again two types: structural annotation and functional annotation.