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Prediction of the coding sequences of unidentified human genes. XVIII. The complete sequences of 100 new cDNA clones from brain which code for large proteins in vitro.

Nagase T., Kikuno R., Nakayama M., Hirosawa M., Ohara O.

In our series of human cDNA projects for accumulating sequence information on the coding sequences of unidentified genes, we herein present the entire sequences of 100 cDNA clones of unidentified genes, named KIAA1544 to KIAA1643, 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 4.6 kb and 2.8 kb (930 amino acid residues), respectively. By computer-assisted database search of the deduced amino acid sequences, 48 predicted gene products were classified into the five functional categories of proteins relating to cell signaling/communication, nucleic acid management, cell structure/motility, protein management and metabolism. Homology search against the databases for proteins deduced from yeast, nematode and fly full genome sequences revealed only one gene (KIAA1630) was entirely conserved among human and these three organisms in the 100 genes reported here. Additionally, their chromosomal loci were determined by using human-rodent hybrid panels unless they were already assigned in the public databases. Furthermore, 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.

DNA Res. 7:273-281(2000) [PubMed] [Europe PMC]

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