Baculoviral IAP repeat-containing protein 1 is a protein that in humans is encoded by the NAIPgene.[5][6]
This gene is part of a 500 kb inverted duplication on chromosome 5q13. This duplicated region contains at least four genes and repetitive elements which make it prone to rearrangements and deletions. The repetitiveness and complexity of the sequence have also caused difficulty in determining the organization of this genomic region. This copy of the gene is full length; additional copies with truncations and internal deletions are also present in this region of chromosome 5q13. It is thought that this gene is a modifier of spinal muscular atrophy caused by mutations in a neighboring gene, SMN1.
The protein encoded by this gene contains regions of homology to two baculovirus inhibitor of apoptosis proteins, and it is able to suppress apoptosis induced by various signals. Alternatively spliced transcript variants encoding distinct isoforms have been found for this gene.[6]
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Chen Q, Baird SD, Mahadevan M, et al. (1998). "Sequence of a 131-kb region of 5q13.1 containing the spinal muscular atrophy candidate genes SMN and NAIP". Genomics. 48 (1): 121–7. doi:10.1006/geno.1997.5141. PMID9503025.
Monani UR, Lorson CL, Parsons DW, et al. (1999). "A single nucleotide difference that alters splicing patterns distinguishes the SMA gene SMN1 from the copy gene SMN2". Hum. Mol. Genet. 8 (7): 1177–83. doi:10.1093/hmg/8.7.1177. PMID10369862.
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Akutsu T, Nishio H, Sumino K, et al. (2002). "Molecular genetics of spinal muscular atrophy: contribution of the NAIP gene to clinical severity". Kobe Journal of Medical Sciences. 48 (1–2): 25–31. PMID11912351.
Xu M, Okada T, Sakai H, et al. (2002). "Functional human NAIP promoter transcription regulatory elements for the NAIP and PsiNAIP genes". Biochim. Biophys. Acta. 1574 (1): 35–50. doi:10.1016/S0167-4781(01)00343-8. PMID11955612.
Notarbartolo M, Cervello M, Dusonchet L, D'Alessandro N (2002). "NAIP-deltaEx10-11: a novel splice variant of the apoptosis inhibitor NAIP differently expressed in drug-sensitive and multidrug-resistant HL60 leukemia cells". Leuk. Res. 26 (9): 857–62. doi:10.1016/S0145-2126(02)00016-4. PMID12127562.
Lindholm D, Mercer EA, Yu LY, et al. (2002). "Neuronal apoptosis inhibitory protein: Structural requirements for hippocalcin binding and effects on survival of NGF-dependent sympathetic neurons". Biochim. Biophys. Acta. 1600 (1–2): 138–47. doi:10.1016/S1570-9639(02)00454-5. PMID12445469.