1hz4: Difference between revisions

From Proteopedia
Jump to navigation Jump to search
← Older edit
No edit summary
No edit summary
 
(11 intermediate revisions by the same user not shown)
Line 1: Line 1:
[[Image:1hz4.jpg|left|200px]]


<!--
==CRYSTAL STRUCTURE OF TRANSCRIPTION FACTOR MALT DOMAIN III==
The line below this paragraph, containing "STRUCTURE_1hz4", creates the "Structure Box" on the page.
<StructureSection load='1hz4' size='340' side='right'caption='[[1hz4]], [[Resolution|resolution]] 1.45&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[1hz4]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1HZ4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1HZ4 FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.45&#8491;</td></tr>
-->
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BEZ:BENZOIC+ACID'>BEZ</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
{{STRUCTURE_1hz4|  PDB=1hz4  |  SCENE= }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1hz4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1hz4 OCA], [https://pdbe.org/1hz4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1hz4 RCSB], [https://www.ebi.ac.uk/pdbsum/1hz4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1hz4 ProSAT]</span></td></tr>
 
</table>
'''CRYSTAL STRUCTURE OF TRANSCRIPTION FACTOR MALT DOMAIN III'''
== Function ==
 
[https://www.uniprot.org/uniprot/MALT_ECOLI MALT_ECOLI] Positively regulates the transcription of the maltose regulon whose gene products are responsible for uptake and catabolism of malto-oligosaccharides. Binds and recognizes a DNA motif (called the malT box): 5'-GGA[TG]GA-3'.[HAMAP-Rule:MF_01247]
 
== Evolutionary Conservation ==
==Overview==
[[Image:Consurf_key_small.gif|200px|right]]
BACKGROUND: MalT from Escherichia coli, the best-studied member of the MalT family of ATP-dependent transcriptional activators, regulates the genes for malto-oligosaccharide utilization. The active form of this 4 domain protein is a homooligomer, and its multimerization is induced by the binding of maltotriose. Domains II and III of MalT were suggested to mediate the oligomerization process, but its molecular mechanism and the specific functions of these domains remain to be identified. RESULTS: We solved the crystal structure of MalT domain III at 1.45 A resolution by multiple isomorphous replacement phasing. The structure reveals eight copies of a two-helix bundle motif arranged in a novel, right-handed superhelix fold with closed walls, followed by a small C-terminal subdomain. The MalT superhelix contains a potential maltotriose binding site and forms a large hydrophobic protein-protein interaction interface that mediates the contact between two MalT domain III molecules. Structure-based analysis of the two-helix bundle motifs revealed a novel degenerated sequence pattern, and repeats of this pattern could be identified in other regulator proteins. CONCLUSIONS: MalT domain III contains a novel superhelix fold. Its protein-protein interaction interface, however, resembles protein binding sites of other superhelical proteins, suggesting a model with domain III mediating MalT oligomerization. Maltotriose seems to modulate the interaction interface and MalT oligomerization by occupying the ligand binding site inside the superhelix. Similar structural and mechanistic features in other MalT protein-family members and unrelated regulator proteins are indicated by the reappearance of a novel sequence motif derived from the MalT domain III structure.
Check<jmol>
 
  <jmolCheckbox>
==About this Structure==
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/hz/1hz4_consurf.spt"</scriptWhenChecked>
1HZ4 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1HZ4 OCA].  
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
 
    <text>to colour the structure by Evolutionary Conservation</text>
==Reference==
  </jmolCheckbox>
Crystal structure of transcription factor MalT domain III: a novel helix repeat fold implicated in regulated oligomerization., Steegborn C, Danot O, Huber R, Clausen T, Structure. 2001 Nov;9(11):1051-60. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11709169 11709169]
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1hz4 ConSurf].
<div style="clear:both"></div>
__TOC__
</StructureSection>
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Clausen, T.]]
[[Category: Clausen T]]
[[Category: Danot, O.]]
[[Category: Danot O]]
[[Category: Huber, R.]]
[[Category: Huber R]]
[[Category: Steegborn, C.]]
[[Category: Steegborn C]]
[[Category: Helix repeat]]
[[Category: Protein superhelix]]
[[Category: Two-helix bundle]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May  2 19:23:03 2008''

Latest revision as of 10:31, 7 February 2024

CRYSTAL STRUCTURE OF TRANSCRIPTION FACTOR MALT DOMAIN IIICRYSTAL STRUCTURE OF TRANSCRIPTION FACTOR MALT DOMAIN III

Structural highlights

1hz4 is a 1 chain structure with sequence from Escherichia coli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.45Å
Ligands:, ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

MALT_ECOLI Positively regulates the transcription of the maltose regulon whose gene products are responsible for uptake and catabolism of malto-oligosaccharides. Binds and recognizes a DNA motif (called the malT box): 5'-GGA[TG]GA-3'.[HAMAP-Rule:MF_01247]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

1hz4, resolution 1.45Å

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA
Retrieved from "https://proteopedia.openfox.io/wiki/index.php?title=1hz4&oldid=4044701"