Isolation and identification of a novel cDNA that encodes human yrdC protein.

In the course of detecting the interaction protein of RBBP10 by yeast two-hybridization, we isolated a novel cDNA that encodes a putative human protein with yrdC domain. It is named human yrdC protein. Because the cDNA contains an open reading fragment (ORF) without a 5' in- frame stop codon, 5' RACE and 3' RACE were proceeded to produce the full-length cDNA. An 1825 bp cDNA was isolated from human placenta, which encodes a putative protein of 279 amino acids. The protein contains a sua5-yciO-yrdC domain. Blast analysis against the human genome database of Genbank revealed that the gene contains five exons, and assigned the gene to human chromosome 1p34.2. A transcript about 2.5 kb is ubiquitously expressed in human tissues. The gene is highly conserved during evolution.