Subject: Re: Helping FlyBase: ADRC-245A dear rachel - it is a pleasure to help flybase, especially on the matter of the the gene cid (for centromere identifier) was reported in Henikoff, S., K. Ahmad, J. S. Platero, and B. van Steensel (2000). Heterochromatic deposition of centromeric histone H3-like proteins. PNAS 97:716-721 . the gene sequence is contained within a Berkeley Genome Project sequence, AC005652, and is at 50A on the cytological map, between the arr and drk genes (defined by sequence analysis and more recently by complementation with deficiencies in the region - this latter stuff is not yet published). is this the info that you need? -yours, kami