Cloning and characterization of the rat homologues of the Inhibitor of Apoptosis protein 1, 2, and 3 genes.

Background Inhibitor of Apoptosis (IAP) proteins are key intrinsic regulators of apoptosis induced by a variety of triggers. We isolated the rat Inhibitor of Apoptosis genes 1, 2 and 3 and characterized their tissue distribution and expression. Results Rat iap-1 encodes a protein of 67.1 kDa with 73 % and 89.2 % homology to human and mouse iap-1 respectively. Rat iap-2 encodes a protein of 66.7 kDa with 81.6 % and 89.3 % homology to human and mouse iap-2 respectively. Rat iap-3 encodes a protein of 56.1 kDa with 89.5 % and 93.1 % homology to human and mouse iap-3 respectively. We have generated rabbit polyclonal antibodies against all three rat IAP genes. Northern and Western blot analysis detected rat IAP transcripts and proteins in majority of the tissues examined. In addition, a shorter, alternatively spliced transcript corresponding to iap-2 was found in testes. Conclusions We have identified three rat homologues of the IAP genes. The elevated expression of rat iap-1 and iap2 in testes suggests that these two genes play an important antiapoptotic role in spermatogenesis.

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                                            [
  "apoptosis-regulation",
  "gene-expression",
  "iap-proteins",
  "nih",
  "rat-model"
]
                                        

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  "009:033"
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                                            {
  "name": "National Institutes of Health",
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  "NIH"
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