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1z0m

From Proteopedia

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Revision as of 09:30, 24 July 2019

the glycogen-binding domain of the AMP-activated protein kinase beta1 subunit

Structural highlights

1z0m is a 3 chain structure with sequence from Buffalo rat. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Related:	1z0n
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[AAKB1_RAT] Non-catalytic subunit of AMP-activated protein kinase (AMPK), an energy sensor protein kinase that plays a key role in regulating cellular energy metabolism. In response to reduction of intracellular ATP levels, AMPK activates energy-producing pathways and inhibits energy-consuming processes: inhibits protein, carbohydrate and lipid biosynthesis, as well as cell growth and proliferation. AMPK acts via direct phosphorylation of metabolic enzymes, and by longer-term effects via phosphorylation of transcription regulators. Also acts as a regulator of cellular polarity by remodeling the actin cytoskeleton; probably by indirectly activating myosin. Beta non-catalytic subunit acts as a scaffold on which the AMPK complex assembles, via its C-terminus that bridges alpha (PRKAA1 or PRKAA2) and gamma subunits (PRKAG1, PRKAG2 or PRKAG3).

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

AMP-activated protein kinase (AMPK) coordinates cellular metabolism in response to energy demand as well as to a variety of stimuli. The AMPK beta subunit acts as a scaffold for the alpha catalytic and gamma regulatory subunits and targets the AMPK heterotrimer to glycogen. We have determined the structure of the AMPK beta glycogen binding domain in complex with beta-cyclodextrin. The structure reveals a carbohydrate binding pocket that consolidates all known aspects of carbohydrate binding observed in starch binding domains into one site, with extensive contact between several residues and five glucose units. beta-cyclodextrin is held in a pincer-like grasp with two tryptophan residues cradling two beta-cyclodextrin glucose units and a leucine residue piercing the beta-cyclodextrin ring. Mutation of key beta-cyclodextrin binding residues either partially or completely prevents the glycogen binding domain from binding glycogen. Modeling suggests that this binding pocket enables AMPK to interact with glycogen anywhere across the carbohydrate's helical surface.

Structural basis for glycogen recognition by AMP-activated protein kinase.,Polekhina G, Gupta A, van Denderen BJ, Feil SC, Kemp BE, Stapleton D, Parker MW Structure. 2005 Oct;13(10):1453-62. PMID:16216577^[1]

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

References

↑ Polekhina G, Gupta A, van Denderen BJ, Feil SC, Kemp BE, Stapleton D, Parker MW. Structural basis for glycogen recognition by AMP-activated protein kinase. Structure. 2005 Oct;13(10):1453-62. PMID:16216577 doi:10.1016/j.str.2005.07.008

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1z0m"

@@ Line 1: / Line 1: @@
 ==the glycogen-binding domain of the AMP-activated protein kinase beta1 subunit==
-<StructureSection load='1z0m' size='340' side='right' caption='[[1z0m]], [[Resolution|resolution]] 1.91&Aring;' scene=''>
+<StructureSection load='1z0m' size='340' side='right'caption='[[1z0m]], [[Resolution|resolution]] 1.91&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[1z0m]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Buffalo_rat Buffalo rat]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Z0M OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1Z0M FirstGlance]. <br>
@@ Line 14: / Line 14: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/z0/1z0m_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/z0/1z0m_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
@@ Line 29: / Line 29: @@
 </div>
 <div class="pdbe-citations 1z0m" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[AMP-activated protein kinase 3D structures|AMP-activated protein kinase 3D structures]]
 == References ==
 <references/>
@@ Line 34: / Line 37: @@
 </StructureSection>
 [[Category: Buffalo rat]]
+[[Category: Large Structures]]
 [[Category: Denderen, B J.van]]
 [[Category: Feil, S C]]

1z0m

From Proteopedia

Revision as of 09:30, 24 July 2019

the glycogen-binding domain of the AMP-activated protein kinase beta1 subunit

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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