Where can I get more information about selenoprotein identification?

Try any of these papers:

Lobanov AV, Gromer S, Salinas G, Gladyshev VN
Selenium metabolism in Trypanosoma: characterization of selenoproteomes and identification of a Kinetoplastida-specific selenoprotein
Nucleic Acids Res., 34, 4012-24 (2006)

Lobanov AV, Delgado C, Rahlfs S, Novoselov SV, Kryukov GV, Gromer S, Hatfield DL, Becker K, Gladyshev VN
The Plasmodium selenoproteome
Nucleic Acids Res., 34, 496-505 (2006)

Castellano S, Lobanov AV, Chapple C, Novoselov SV, Albrecht M, Hua D, Lescure A, Lengauer T, Krol A, Gladyshev VN, Guigo R
Diversity and functional plasticity of eukaryotic selenoproteins: identification and characterization of the SelJ family
Proc. Natl. Acad. Sci. USA, 102, 16188-93 (2005)

Obata T, Shiraiwa Y
A novel eukaryotic selenoprotein in the haptophyte alga Emiliania huxleyi
J. Biol. Chem., 280, 18462-8 (2005)

Taskov K, Chapple C, Kryukov GV, Castellano S, Lobanov AV, Korotkov KV, Guigo R, Gladyshev VN
Nematode selenoproteome: the use of the selenocysteine insertion system to decode one codon in an animal genome?
Nucleic Acids Res., 33, 2227-38 (2005)

Zhang Y, Gladyshev VN
An algorithm for identification of bacterial selenocysteine insertion sequence elements and selenoprotein genes
Bioinformatics, 21, 2580-9 (2005)

Castellano S, Novoselov SV, Kryukov GV, Lescure A, Blanco E, Krol A, Gladyshev VN, Guigo R
Reconsidering the evolution of eukaryotic selenoproteins: a novel nonmammalian family with scattered phylogenetic distribution
EMBO Rep., 5, 71-7 (2004)

Kryukov GV, Gladyshev VN
The prokaryotic selenoproteome
EMBO Rep., 5, 538-43 (2004)

Kryukov GV, Castellano S, Novoselov SV, Lobanov AV, Zehtab O, Guigo R, Gladyshev VN
Characterization of mammalian selenoproteomes
Science, 300, 1439-43 (2003)

Novoselov SV, Rao M, Onoshko NV, Zhi H, Kryukov GV, Xiang Y, Weeks DP, Hatfield DL, Gladyshev VN
Selenoproteins and selenocysteine insertion system in the model plant cell system, Chlamydomonas reinhardtii
EMBO J., 21, 3681-93 (2002)

Castellano S, Morozova N, Morey M, Berry MJ, Serras F, Corominas M, Guigo R.
In silico identification of novel selenoproteins in the Drosophila melanogaster genome
EMBO Rep., 2, 697-702 (2001)

Lescure A, Gautheret D, Carbon P, Krol A
Novel selenoproteins identified in silico and in vivo by using a conserved RNA structural motif
J. Biol. Chem., 274, 38147-54 (1999)

Kryukov GV, Kryukov VM, Gladyshev VN
New mammalian selenocysteine-containing proteins identified with an algorithm that searches for selenocysteine insertion sequence elements
J. Biol. Chem., 274, 33888-97 (1999)