Structural highlights
Disease
[STAR_HUMAN] Non-classic congenital lipoid adrenal hyperplasia due to STAR deficency;Classic congenital lipoid adrenal hyperplasia due to STAR deficency;Familial glucocorticoid deficiency. The disease is caused by mutations affecting the gene represented in this entry.
Function
[STAR_HUMAN] Plays a key role in steroid hormone synthesis by enhancing the metabolism of cholesterol into pregnenolone. Mediates the transfer of cholesterol from the outer mitochondrial membrane to the inner mitochondrial membrane where it is cleaved to pregnenolone.
Publication Abstract from PubMed
BACKGROUND: Steroidogenic acute regulatory (StAR) protein related lipid transfer (START) domains are small globular modules that form a cavity where lipids and lipid hormones bind. These domains can transport ligands to facilitate lipid exchange between biological membranes, and they have been postulated to modulate the activity of other domains of the protein in response to ligand binding. More than a dozen human genes encode START domains, and several of them are implicated in a disease. PRINCIPAL FINDINGS: We report crystal structures of the human STARD1, STARD5, STARD13 and STARD14 lipid transfer domains. These represent four of the six functional classes of START domains. SIGNIFICANCE: Sequence alignments based on these and previously reported crystal structures define the structural determinants of human START domains, both those related to structural framework and those involved in ligand specificity. ENHANCED VERSION: This article can also be viewed as an enhanced version in which the text of the article is integrated with interactive 3D representations and animated transitions. Please note that a web plugin is required to access this enhanced functionality. Instructions for the installation and use of the web plugin are available in Text S1.
Comparative structural analysis of lipid binding START domains.,Thorsell AG, Lee WH, Persson C, Siponen MI, Nilsson M, Busam RD, Kotenyova T, Schuler H, Lehtio L PLoS One. 2011;6(6):e19521. Epub 2011 Jun 30. PMID:21738568[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Thorsell AG, Lee WH, Persson C, Siponen MI, Nilsson M, Busam RD, Kotenyova T, Schuler H, Lehtio L. Comparative structural analysis of lipid binding START domains. PLoS One. 2011;6(6):e19521. Epub 2011 Jun 30. PMID:21738568 doi:10.1371/journal.pone.0019521
