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4cyc

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Revision as of 02:44, 11 December 2016

CRYSTAL STRUCTURE OF A UBX-EXD-DNA COMPLEX INCLUDING THE HEXAPEPTIDE AND UBDA MOTIFS

Structural highlights

4cyc is a 4 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[UBX_DROME] Sequence-specific transcription factor which is part of a developmental regulatory system that provides cells with specific positional identities on the anterior-posterior axis. Binds the consensus region 5'-TTAAT[GT][GA]-3'. This homeotic protein controls development of the cells in the posterior thoracic and first abdominal segments. It activates the synthesis of the decapentaplegic (DPP) growth factor. [EXD_DROME] Transcription factor which acts with the selector homeodomain proteins altering the regulation of downstream target genes such as wingless (wg), teashirt (tsh) and decapentaplegic (dpp), thus affecting segmental identity. Delimits the eye field and prevent inappropriate eye development. Required for proper localization of chordotonal organs within the peripheral nervous system.^[1] ^[2] ^[3] ^[4] ^[5] ^[6]

Publication Abstract from PubMed

The patterning function of Hox proteins relies on assembling protein complexes with PBC proteins, which often involves a protein motif found in most Hox proteins, the so-called Hexapeptide (HX). Hox/PBC complexes likely gained functional diversity by acquiring additional modes of interaction. Here, we structurally characterize the first HX alternative interaction mode based on the paralogue-specific UbdA motif and further functionally validate structure-based predictions. The UbdA motif folds as a flexible extension of the homeodomain recognition helix and defines Hox/PBC contacts that occur, compared with those mediated by the HX motif, on the opposing side of the DNA double helix. This provides a new molecular facet to Hox/PBC complex assembly and suggests possible mechanisms for the diversification of Hox protein function.

A Flexible Extension of the Drosophila Ultrabithorax Homeodomain Defines a Novel Hox/PBC Interaction Mode.,Foos N, Maurel-Zaffran C, Mate MJ, Vincentelli R, Hainaut M, Berenger H, Pradel J, Saurin AJ, Ortiz-Lombardia M, Graba Y Structure. 2015 Feb 3;23(2):270-9. doi: 10.1016/j.str.2014.12.011. PMID:25651060^[7]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Rauskolb C, Peifer M, Wieschaus E. extradenticle, a regulator of homeotic gene activity, is a homolog of the homeobox-containing human proto-oncogene pbx1. Cell. 1993 Sep 24;74(6):1101-12. PMID:8104703
↑ Flegel WA, Singson AW, Margolis JS, Bang AG, Posakony JW, Murre C. Dpbx, a new homeobox gene closely related to the human proto-oncogene pbx1 molecular structure and developmental expression. Mech Dev. 1993 May;41(2-3):155-61. PMID:8100142
↑ Rauskolb C, Wieschaus E. Coordinate regulation of downstream genes by extradenticle and the homeotic selector proteins. EMBO J. 1994 Aug 1;13(15):3561-9. PMID:7914871
↑ Rieckhof GE, Casares F, Ryoo HD, Abu-Shaar M, Mann RS. Nuclear translocation of extradenticle requires homothorax, which encodes an extradenticle-related homeodomain protein. Cell. 1997 Oct 17;91(2):171-83. PMID:9346235
↑ Kurant E, Pai CY, Sharf R, Halachmi N, Sun YH, Salzberg A. Dorsotonals/homothorax, the Drosophila homologue of meis1, interacts with extradenticle in patterning of the embryonic PNS. Development. 1998 Mar;125(6):1037-48. PMID:9463350
↑ Pai CY, Kuo TS, Jaw TJ, Kurant E, Chen CT, Bessarab DA, Salzberg A, Sun YH. The Homothorax homeoprotein activates the nuclear localization of another homeoprotein, extradenticle, and suppresses eye development in Drosophila. Genes Dev. 1998 Feb 1;12(3):435-46. PMID:9450936
↑ Foos N, Maurel-Zaffran C, Mate MJ, Vincentelli R, Hainaut M, Berenger H, Pradel J, Saurin AJ, Ortiz-Lombardia M, Graba Y. A Flexible Extension of the Drosophila Ultrabithorax Homeodomain Defines a Novel Hox/PBC Interaction Mode. Structure. 2015 Feb 3;23(2):270-9. doi: 10.1016/j.str.2014.12.011. PMID:25651060 doi:http://dx.doi.org/10.1016/j.str.2014.12.011

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/4cyc"

@@ Line 1: / Line 1: @@
 ==CRYSTAL STRUCTURE OF A UBX-EXD-DNA COMPLEX INCLUDING THE HEXAPEPTIDE AND UBDA MOTIFS==
 <StructureSection load='4cyc' size='340' side='right' caption='[[4cyc]], [[Resolution|resolution]] 2.36&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[4cyc]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4CYC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4CYC FirstGlance]. <br>
-</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4cyc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4cyc OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4cyc RCSB], [http://www.ebi.ac.uk/pdbsum/4cyc PDBsum]</span></td></tr>
+</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4cyc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4cyc OCA], [http://pdbe.org/4cyc PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4cyc RCSB], [http://www.ebi.ac.uk/pdbsum/4cyc PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4cyc ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 15: / Line 16: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 4cyc" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>

4cyc

From Proteopedia

Revision as of 02:44, 11 December 2016

CRYSTAL STRUCTURE OF A UBX-EXD-DNA COMPLEX INCLUDING THE HEXAPEPTIDE AND UBDA MOTIFS

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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