1zdt

From Proteopedia

Revision as of 00:55, 25 March 2013

Template:STRUCTURE 1zdt

The Crystal Structure of Human Steroidogenic Factor-1

Template:ABSTRACT PUBMED 15897460

Disease

[STF1_HUMAN] Defects in NR5A1 are a cause of 46,XY sex reversal type 3 (SRXY3) [MIM:612965]. A condition characterized by male-to-female sex reversal in the presence of a normal 46,XY karyotype.^[1][2][3][4] Defects in NR5A1 are a cause of adrenocortical insufficiency without ovarian defect (ACIWOD) [MIM:184757]. ACIWOD is characterized by severe 'slackness' muscular hypotonia. There is decreased sodium, increased potassium and elevated ACTH.^[5] Defects in NR5A1 are the cause of premature ovarian failure type 7 (POF7) [MIM:612964]. An ovarian disorder defined as the cessation of ovarian function under the age of 40 years. It is characterized by oligomenorrhea or amenorrhea, in the presence of elevated levels of serum gonadotropins and low estradiol.^[6] Defects in NR5A1 are the cause of spermatogenic failure type 8 (SPGF8) [MIM:613957]. SPGF8 is an infertility disorder characterized by spermatogenesis failure and severe oligozoospermia.^[7] [NCOA2_HUMAN] Note=Chromosomal aberrations involving NCOA2 may be a cause of acute myeloid leukemias. Inversion inv(8)(p11;q13) generates the KAT6A-NCOA2 oncogene, which consists of the N-terminal part of KAT6A and the C-terminal part of NCOA2/TIF2. KAT6A-NCOA2 binds to CREBBP and disrupts its function in transcription activation.

Function

[STF1_HUMAN] Transcriptional activator. Seems to be essential for sexual differentiation and formation of the primary steroidogenic tissues. Binds to the Ad4 site found in the promoter region of steroidogenic P450 genes such as CYP11A, CYP11B and CYP21B. Also regulates the AMH/Muellerian inhibiting substance gene as well as the AHCH and STAR genes. 5'-YCAAGGYC-3' and 5'-RRAGGTCA-3' are the consensus sequences for the recognition by NR5A1. The SFPQ-NONO-NR5A1 complex binds to the CYP17 promoter and regulates basal and cAMP-dependent transcriptional avtivity. Binds phosphatidylcholine (By similarity). Binds phospholipids with a phosphatidylinositol (PI) headgroup, in particular PI(3,4)P2 and PI(3,4,5)P3. Activated by the phosphorylation of NR5A1 by HIPK3 leading to increased steroidogenic gene expression upon cAMP signaling pathway stimulation.^[8] [NCOA2_HUMAN] Transcriptional coactivator for steroid receptors and nuclear receptors. Coactivator of the steroid binding domain (AF-2) but not of the modulating N-terminal domain (AF-1). Required with NCOA1 to control energy balance between white and brown adipose tissues.^[9]

About this Structure

1zdt is a 4 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

• Wang W, Zhang C, Marimuthu A, Krupka HI, Tabrizizad M, Shelloe R, Mehra U, Eng K, Nguyen H, Settachatgul C, Powell B, Milburn MV, West BL. The crystal structures of human steroidogenic factor-1 and liver receptor homologue-1. Proc Natl Acad Sci U S A. 2005 May 24;102(21):7505-10. Epub 2005 May 16. PMID:15897460

1. ↑ Achermann JC, Ito M, Ito M, Hindmarsh PC, Jameson JL. A mutation in the gene encoding steroidogenic factor-1 causes XY sex reversal and adrenal failure in humans. Nat Genet. 1999 Jun;22(2):125-6. PMID:10369247 doi:10.1038/9629
2. ↑ Achermann JC, Ozisik G, Ito M, Orun UA, Harmanci K, Gurakan B, Jameson JL. Gonadal determination and adrenal development are regulated by the orphan nuclear receptor steroidogenic factor-1, in a dose-dependent manner. J Clin Endocrinol Metab. 2002 Apr;87(4):1829-33. PMID:11932325
3. ↑ Lin L, Philibert P, Ferraz-de-Souza B, Kelberman D, Homfray T, Albanese A, Molini V, Sebire NJ, Einaudi S, Conway GS, Hughes IA, Jameson JL, Sultan C, Dattani MT, Achermann JC. Heterozygous missense mutations in steroidogenic factor 1 (SF1/Ad4BP, NR5A1) are associated with 46,XY disorders of sex development with normal adrenal function. J Clin Endocrinol Metab. 2007 Mar;92(3):991-9. Epub 2007 Jan 2. PMID:17200175 doi:10.1210/jc.2006-1672
4. ↑ Kohler B, Lin L, Ferraz-de-Souza B, Wieacker P, Heidemann P, Schroder V, Biebermann H, Schnabel D, Gruters A, Achermann JC. Five novel mutations in steroidogenic factor 1 (SF1, NR5A1) in 46,XY patients with severe underandrogenization but without adrenal insufficiency. Hum Mutat. 2008 Jan;29(1):59-64. PMID:17694559 doi:10.1002/humu.20588
5. ↑ Biason-Lauber A, Schoenle EJ. Apparently normal ovarian differentiation in a prepubertal girl with transcriptionally inactive steroidogenic factor 1 (NR5A1/SF-1) and adrenocortical insufficiency. Am J Hum Genet. 2000 Dec;67(6):1563-8. Epub 2000 Oct 18. PMID:11038323 doi:S0002-9297(07)63224-8
6. ↑ Lourenco D, Brauner R, Lin L, De Perdigo A, Weryha G, Muresan M, Boudjenah R, Guerra-Junior G, Maciel-Guerra AT, Achermann JC, McElreavey K, Bashamboo A. Mutations in NR5A1 associated with ovarian insufficiency. N Engl J Med. 2009 Mar 19;360(12):1200-10. doi: 10.1056/NEJMoa0806228. Epub 2009 , Feb 25. PMID:19246354 doi:10.1056/NEJMoa0806228
7. ↑ Bashamboo A, Ferraz-de-Souza B, Lourenco D, Lin L, Sebire NJ, Montjean D, Bignon-Topalovic J, Mandelbaum J, Siffroi JP, Christin-Maitre S, Radhakrishna U, Rouba H, Ravel C, Seeler J, Achermann JC, McElreavey K. Human male infertility associated with mutations in NR5A1 encoding steroidogenic factor 1. Am J Hum Genet. 2010 Oct 8;87(4):505-12. doi: 10.1016/j.ajhg.2010.09.009. PMID:20887963 doi:10.1016/j.ajhg.2010.09.009
8. ↑ Lan HC, Li HJ, Lin G, Lai PY, Chung BC. Cyclic AMP stimulates SF-1-dependent CYP11A1 expression through homeodomain-interacting protein kinase 3-mediated Jun N-terminal kinase and c-Jun phosphorylation. Mol Cell Biol. 2007 Mar;27(6):2027-36. Epub 2007 Jan 8. PMID:17210646 doi:10.1128/MCB.02253-06
9. ↑ Voegel JJ, Heine MJ, Tini M, Vivat V, Chambon P, Gronemeyer H. The coactivator TIF2 contains three nuclear receptor-binding motifs and mediates transactivation through CBP binding-dependent and -independent pathways. EMBO J. 1998 Jan 15;17(2):507-19. PMID:9430642 doi:10.1093/emboj/17.2.507