Prediction of the coding sequences of unidentified human genes. XVI. The complete sequences of 150 new cDNA clones from brain which code for large proteins in vitro.

We have carried out a human cDNA sequencing project to accumulate information regarding the coding sequences of unidentified human genes. As an extension of the preceding reports, we herein present the entire sequences of 150 cDNA clones of unknown human genes, named KIAA1294 to KIAA1443, from two sets of size-fractionated human adult and fetal brain cDNA libraries. The average sizes of the inserts and corresponding open reading frames of cDNA clones analyzed here reached 4.8 kb and 2.7 kb (910 amino acid residues), respectively. From sequence similarities and protein motifs, 73 predicted gene products were functionally annotated and 97% of them were classified into the following four functional categories: cell signaling/communication, nucleic acid management, cell structure/motility and protein management. Additionally, the chromosomal loci of the genes were assigned by using human-rodent hybrid panels for those genes whose mapping data were not available in the public databases. The expression profiles of the genes were also studied in 10 human tissues, 8 brain regions, spinal cord, fetal brain and fetal liver by reverse transcription-coupled polymerase chain reaction, products of which were quantified by enzyme-linked immunosorbent assay.

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