1oyx

From Proteopedia

(Difference between revisions)

Revision as of 08:03, 15 February 2018

CRYSTAL STRUCTURE OF 3-MBT REPEATS OF LETHAL (3) MALIGNANT BRAIN TUMOR (SELENO-MET) AT 1.85 ANGSTROM

Structural highlights

1oyx is a 3 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
NonStd Res:
Related:	1oz2, 1oz3
Gene:	L3MBTL OR L3MBT OR KIAA0681 (HUMAN)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[LMBL1_HUMAN] Polycomb group (PcG) protein that specifically recognizes and binds mono- and dimethyllysine residues on target proteins, therey acting as a 'reader' of a network of post-translational modifications. PcG proteins maintain the transcriptionally repressive state of genes: acts as a chromatin compaction factor by recognizing and binding mono- and dimethylated histone H1b/HIST1H1E at 'Lys-26' (H1bK26me1 and H1bK26me2) and histone H4 at 'Lys-20' (H4K20me1 and H4K20me2), leading to condense chromatin and repress transcription. Recognizes and binds p53/TP53 monomethylated at 'Lys-382', leading to repress p53/TP53-target genes. Also recognizes and binds RB1/RB monomethylated at 'Lys-860'. Participates in the ETV6-mediated repression. Probably plays a role in cell proliferation. Overexpression induces multinucleated cells, suggesting that it is required to accomplish normal mitosis.^[1] ^[2] ^[3] ^[4]

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

We report on the X-ray structure of three 100-amino acid mbt repeats in h-l(3)mbt, a polycomb group protein involved in transcriptional repression, whose gene is located in a region of chromosome 20 associated with hematopoietic malignancies. Interdigitation between the extended arms and cores of the mbt repeats results in a three-leaved propeller-like architecture, containing a central cavity. We have identified one ligand binding pocket per mbt repeat, which accommodates either the morphilino ring of MES or the proline ring of the C-terminal peptide segment, within a cavity lined by aromatic amino acids. Strikingly, phenotypic alterations resulting from point mutations or deletions in the mbt repeats of the related Drosophila SCM protein are clustered in and around the ligand binding pocket.

Malignant brain tumor repeats: a three-leaved propeller architecture with ligand/peptide binding pockets.,Wang WK, Tereshko V, Boccuni P, MacGrogan D, Nimer SD, Patel DJ Structure. 2003 Jul;11(7):775-89. PMID:12842041^[5]

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

References

↑ Trojer P, Li G, Sims RJ 3rd, Vaquero A, Kalakonda N, Boccuni P, Lee D, Erdjument-Bromage H, Tempst P, Nimer SD, Wang YH, Reinberg D. L3MBTL1, a histone-methylation-dependent chromatin lock. Cell. 2007 Jun 1;129(5):915-28. PMID:17540172 doi:10.1016/j.cell.2007.03.048
↑ Kalakonda N, Fischle W, Boccuni P, Gurvich N, Hoya-Arias R, Zhao X, Miyata Y, Macgrogan D, Zhang J, Sims JK, Rice JC, Nimer SD. Histone H4 lysine 20 monomethylation promotes transcriptional repression by L3MBTL1. Oncogene. 2008 Jul 17;27(31):4293-304. doi: 10.1038/onc.2008.67. Epub 2008 Apr, 14. PMID:18408754 doi:10.1038/onc.2008.67
↑ Saddic LA, West LE, Aslanian A, Yates JR 3rd, Rubin SM, Gozani O, Sage J. Methylation of the retinoblastoma tumor suppressor by SMYD2. J Biol Chem. 2010 Nov 26;285(48):37733-40. doi: 10.1074/jbc.M110.137612. Epub, 2010 Sep 24. PMID:20870719 doi:10.1074/jbc.M110.137612
↑ West LE, Roy S, Lachmi-Weiner K, Hayashi R, Shi X, Appella E, Kutateladze TG, Gozani O. The MBT repeats of L3MBTL1 link set8 mediated p53 methylation at lysine 382 to target gene repression. J Biol Chem. 2010 Sep 24. PMID:20870725 doi:10.1074/jbc.M110.139527
↑ Wang WK, Tereshko V, Boccuni P, MacGrogan D, Nimer SD, Patel DJ. Malignant brain tumor repeats: a three-leaved propeller architecture with ligand/peptide binding pockets. Structure. 2003 Jul;11(7):775-89. PMID:12842041

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1oyx"

@@ Line 1: / Line 1: @@
 ==CRYSTAL STRUCTURE OF 3-MBT REPEATS OF LETHAL (3) MALIGNANT BRAIN TUMOR (SELENO-MET) AT 1.85 ANGSTROM==
 <StructureSection load='1oyx' size='340' side='right' caption='[[1oyx]], [[Resolution|resolution]] 1.85&Aring;' scene=''>
@@ Line 7: / Line 8: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1oz2|1oz2]], [[1oz3|1oz3]]</td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">L3MBTL OR L3MBT OR KIAA0681 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=1oyx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1oyx OCA], [http://pdbe.org/1oyx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1oyx RCSB], [http://www.ebi.ac.uk/pdbsum/1oyx PDBsum]</span></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=1oyx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1oyx OCA], [http://pdbe.org/1oyx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1oyx RCSB], [http://www.ebi.ac.uk/pdbsum/1oyx PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1oyx ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 15: / Line 16: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/oy/1oyx_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/oy/1oyx_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>

1oyx

From Proteopedia

Revision as of 08:03, 15 February 2018

CRYSTAL STRUCTURE OF 3-MBT REPEATS OF LETHAL (3) MALIGNANT BRAIN TUMOR (SELENO-MET) AT 1.85 ANGSTROM

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox