Deleted in azoospermia protein 2is aproteinthat in humans is encoded by theDAZ2gene.[5][6]
This gene is a member of theDAZ gene familyand is a candidate for the human Y-chromosomalazoospermia factor(AZF). Itsexpressionis restricted to premeioticgerm cells,particularly inspermatogonia.It encodes an RNA-binding protein that is important forspermatogenesis.Four copies of this gene are found onchromosome Ywithin palindromic duplications; one pair of genes is part of the P2 palindrome and the second pair is part of the P1 palindrome. Each gene contains a 2.4 kb repeat including a 72-bp exon, called the DAZ repeat; the number of DAZ repeats is variable and there are several variations in the sequence of the DAZ repeat. Each copy of the gene also contains a 10.8 kb region that may be amplified; this region includes fiveexonsthat encode anRNA recognition motif(RRM) domain. This gene contains one copy of the 10.8 kb repeat.Alternative splicingresults in multiple transcript variants encoding differentisoforms.[6]
^"Human PubMed Reference:".National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:".National Center for Biotechnology Information, U.S. National Library of Medicine.
^Saxena R, de Vries JW, Repping S, Alagappan RK, Skaletsky H, Brown LG, Ma P, Chen E, Hoovers JM, Page DC (Sep 2000). "Four DAZ genes in two clusters found in the AZFc region of the human Y chromosome".Genomics.67(3): 256–67.doi:10.1006/geno.2000.6260.PMID10936047.
Foresta C, Ferlin A, Moro E, et al. (2002). "[Microdeletion of chromosome Y in male infertility: role of the DAZ gene]".Ann. Ital. Med. Int.16(2): 82–92.PMID11688365.
Fox MS, Reijo Pera RA (2002). "Male infertility, genetic analysis of the DAZ genes on the human Y chromosome and genetic analysis of DNA repair".Mol. Cell. Endocrinol.184(1–2): 41–9.doi:10.1016/S0303-7207(01)00646-3.PMID11694340.S2CID54277826.
Vogt PH, Fernandes S (2003). "Polymorphic DAZ gene family in polymorphic structure of AZFc locus: Artwork or functional for human spermatogenesis?".APMIS.111(1): 115–26, discussion 126–7.doi:10.1034/j.1600-0463.2003.11101161.x.PMID12752250.S2CID41326783.
Reijo R, Lee TY, Salo P, et al. (1995). "Diverse spermatogenic defects in humans caused by Y chromosome deletions encompassing a novel RNA-binding protein gene".Nat. Genet.10(4): 383–93.doi:10.1038/ng0895-383.PMID7670487.S2CID2917750.
Saxena R, Brown LG, Hawkins T, et al. (1996). "The DAZ gene cluster on the human Y chromosome arose from an autosomal gene that was transposed, repeatedly amplified and pruned".Nat. Genet.14(3): 292–9.doi:10.1038/ng1196-292.PMID8896558.S2CID34964224.
Yen PH, Chai NN, Salido EC (1997). "The human DAZ genes, a putative male infertility factor on the Y chromosome, are highly polymorphic in the DAZ repeat regions".Mamm. Genome.8(10): 756–9.doi:10.1007/s003359900560.PMID9321470.S2CID33258251.
Tsui S, Dai T, Roettger S, et al. (2000). "Identification of two novel proteins that interact with germ-cell-specific RNA-binding proteins DAZ and DAZL1".Genomics.65(3): 266–73.doi:10.1006/geno.2000.6169.PMID10857750.
Ruggiu M, Cooke HJ (2000). "In vivo and in vitro analysis of homodimerisation activity of the mouse Dazl1 protein".Gene.252(1–2): 119–26.doi:10.1016/S0378-1119(00)00219-5.PMID10903443.
Ferlin A, Moro E, Rossi A, Foresta C (2002). "A novel approach for the analysis of DAZ gene copy number in severely idiopathic infertile men".J. Endocrinol. Invest.25(1): RC1–3.doi:10.1007/bf03343952.PMID11883873.S2CID24737444.