2jx3

NMR solution structure of the N-terminal domain of DEK

spinqualitylabelsall models 2jx3 Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2jx3 is a 1 chain structure with sequence from Homo sapiens. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Solution NMR Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Disease DEK_HUMAN Note=A chromosomal aberration involving DEK is found in a subset of acute myeloid leukemia (AML); also known as acute non-lymphocytic leukemia. Translocation t(6;9)(p23;q34) with NUP214/CAN. It results in the formation of a DEK-CAN fusion gene. Function DEK_HUMAN Involved in chromatin organization. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed The human DEK protein has a long-standing association with carcinogenesis since the DEK gene was originally identified in the t(6:9) chromosomal translocation in a subtype of patients with acute myelogenous leukemia (AML). Recent studies have partly unveiled DEK's cellular functions including apoptosis inhibition in primary cells as well as cancer cells, determination of 3' splice site of transcribed RNA, and suppression of transcription initiation by polymerase II. It has been previously shown that the N-terminal region of DEK, spanning residues 68-226, confers important in vitro and in vivo functions of DEK, which include double-stranded DNA (ds-DNA) binding, introduction of constrained positive supercoils into closed dsDNA, and apoptosis inhibition. In this paper, we describe the three-dimensional structure of the N-terminal domain of DEK (DEKntd) as determined using solution NMR. The C-terminal part of DEKntd, which contains a putative DNA-binding motif (SAF/SAP motif), folds into a helix-loop-helix structure. Interestingly, the N-terminal part of DEKntd shows a very similar structure to the C-terminal part, although the N-terminal and the C-terminal part differ distinctively in their amino acid sequences. As a consequence, the structure of DEKntd has a pseudo twofold plane symmetry. In addition, we tested dsDNA binding of DEKntd by monitoring changes of NMR chemical shifts upon addition of dsDNAs. We found that not only the C-terminal part containing the SAF/SAP motif but the N-terminal part is also involved in DEKntd's dsDNA binding. Our study illustrates a new structural variant and reveals novel dsDNA-binding properties for proteins containing the SAP/SAF motif. Solution NMR structure of the N-terminal domain of the human DEK protein.,Devany M, Kappes F, Chen KM, Markovitz DM, Matsuo H Protein Sci. 2008 Feb;17(2):205-15. PMID:18227428 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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