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Chromosome 9 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome, as they normally do with all chromosomes. Chromosome 9 spans about 138 million base pairs of nucleic acids (the building blocks of DNA) and represents between 4 and 4.5 percent of the total DNA in cells. Identifying genes on each chromosome is an active area of genetic research. Because researchers use different approaches to predict the number of genes on each chromosome, the estimated number of genes varies. Chromosome 9 likely contains between 800 and 1,200 genes. ==Genes== The following are some of the genes located on chromosome 9: * ABO: ABO histo-blood group glycosyltransferases * ADAMTS13: ADAM metallopeptidase with thrombospondin type 1 motif, 13 * ALAD: aminolevulinate, delta-, dehydratase * ALS4: amyotrophic lateral sclerosis 4 * ASS: argininosuccinate synthetase * CCL21: chemokine (C-C motif) ligand 21, SCYA21 * CCL27: chemokine (C-C motif) ligand 27, SCYA27 * COL5A1: collagen, type V, alpha 1 * ENG: endoglin (Osler-Rendu-Weber syndrome 1) * FXN: frataxin * GALT: galactose-1-phosphate uridylyltransferase * GLE1L: Nucleoporin GLE1 * GRHPR: glyoxylate redasductase/hydroxypyruvate reductase * IKBKAP: inhibitor of kappa light polypeptide gene enhancer in B-cells, kinase complex-associated protein * MGC50722: Protein MGC50722, Uncharacterized Protein LOC399693 * TGFBR1: transforming growth factor beta, receptor type I * TMC1: transmembrane channel-like 1 * TSC1: tuberous sclerosis 1 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Chromosome 9 (human)」の詳細全文を読む スポンサード リンク
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