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Sterile alpha motif domain-containing protein 9 is a 1,589-amino-acidprotein encoded by the SAMD9gene.[3] This cytoplasmic protein is a tumor suppressor but also plays a key role in cell proliferation and the innate immune response to viral infection. Like its paralog, SAMD9-like protein (SAMD9L),[4] its N-terminus contains a sterile alpha motif (SAM).
Deleterious mutations of this gene cause normophosphatemic familial tumoral calcinosis (NFTC).[4] On the other hand, mutations that increase the activity of SAMD9 cause myelodysplasia, infection, restriction of growth, adrenal hypoplasia (small adrenal glands), genital phenotypes, and enteropathy (MIRAGE) syndrome.[5] This can lead to loss of chromosome 7 as described for monosomy 7 and myelodysplastic syndrome and leukemia syndrome-2 (M7MLS2;.[6]
^Narumi S, Amano N, Ishii T, Katsumata N, Muroya K, Adachi M, Toyoshima K, Tanaka Y, Fukuzawa R, Miyako K, Kinjo S, Ohga S, Ihara K, Inoue H, Kinjo T, Hara T, Kohno M, Yamada S, Urano H, Kitagawa Y, Tsugawa K, Higa A, Miyawaki M, Okutani T, Kizaki Z, Hamada H, Kihara M, Shiga K, Yamaguchi T, Kenmochi M, Kitajima H, Fukami M, Shimizu A, Kudoh J, Shibata S, Okano H, Miyake N, Matsumoto N, Hasegawa T (July 2016). "SAMD9 mutations cause a novel multisystem disorder, MIRAGE syndrome, and are associated with loss of chromosome 7". Nature Genetics. 48 (7): 792–7. doi:10.1038/ng.3569. PMID27182967.
Maruyama K, Sugano S (January 1994). "Oligo-capping: a simple method to replace the cap structure of eukaryotic mRNAs with oligoribonucleotides". Gene. 138 (1–2): 171–4. doi:10.1016/0378-1119(94)90802-8. PMID8125298.
Suzuki Y, Yoshitomo-Nakagawa K, Maruyama K, Suyama A, Sugano S (October 1997). "Construction and characterization of a full length-enriched and a 5'-end-enriched cDNA library". Gene. 200 (1–2): 149–56. doi:10.1016/S0378-1119(97)00411-3. PMID9373149.
Dereure O (May 2007). "[SAMD9 mutation in normophosphatemic familial tumoral calcinosis]". Annales de Dermatologie et de Vénéréologie. 134 (5 Pt 1): 505. doi:10.1016/S0151-9638(07)89230-1. PMID17507861.
