4b2d

From Proteopedia

(Difference between revisions)

Revision as of 16:36, 29 January 2020

human PKM2 with L-serine and FBP bound.

Structural highlights

4b2d is a 4 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, ,
Related:	1t5a
Activity:	Pyruvate kinase, with EC number 2.7.1.40
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[KPYM_HUMAN] Glycolytic enzyme that catalyzes the transfer of a phosphoryl group from phosphoenolpyruvate (PEP) to ADP, generating ATP. Stimulates POU5F1-mediated transcriptional activation. Plays a general role in caspase independent cell death of tumor cells. The ratio betwween the highly active tetrameric form and nearly inactive dimeric form determines whether glucose carbons are channeled to biosynthetic processes or used for glycolytic ATP production. The transition between the 2 forms contributes to the control of glycolysis and is important for tumor cell proliferation and survival.^[1] ^[2] ^[3]

Publication Abstract from PubMed

Cancer cells exhibit several unique metabolic phenotypes that are critical for cell growth and proliferation. Specifically, they overexpress the M2 isoform of the tightly regulated enzyme pyruvate kinase (PKM2), which controls glycolytic flux, and are highly dependent on de novo biosynthesis of serine and glycine. Here we describe a new rheostat-like mechanistic relationship between PKM2 activity and serine biosynthesis. We show that serine can bind to and activate human PKM2, and that PKM2 activity in cells is reduced in response to serine deprivation. This reduction in PKM2 activity shifts cells to a fuel-efficient mode in which more pyruvate is diverted to the mitochondria and more glucose-derived carbon is channelled into serine biosynthesis to support cell proliferation.

Serine is a natural ligand and allosteric activator of pyruvate kinase M2.,Chaneton B, Hillmann P, Zheng L, Martin AC, Maddocks OD, Chokkathukalam A, Coyle JE, Jankevics A, Holding FP, Vousden KH, Frezza C, O'Reilly M, Gottlieb E Nature. 2012 Oct 14. doi: 10.1038/nature11540. PMID:23064226^[4]

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

References

↑ Stetak A, Veress R, Ovadi J, Csermely P, Keri G, Ullrich A. Nuclear translocation of the tumor marker pyruvate kinase M2 induces programmed cell death. Cancer Res. 2007 Feb 15;67(4):1602-8. PMID:17308100 doi:10.1158/0008-5472.CAN-06-2870
↑ Lee J, Kim HK, Han YM, Kim J. Pyruvate kinase isozyme type M2 (PKM2) interacts and cooperates with Oct-4 in regulating transcription. Int J Biochem Cell Biol. 2008;40(5):1043-54. doi: 10.1016/j.biocel.2007.11.009., Epub 2007 Nov 29. PMID:18191611 doi:10.1016/j.biocel.2007.11.009
↑ Luo W, Hu H, Chang R, Zhong J, Knabel M, O'Meally R, Cole RN, Pandey A, Semenza GL. Pyruvate kinase M2 is a PHD3-stimulated coactivator for hypoxia-inducible factor 1. Cell. 2011 May 27;145(5):732-44. doi: 10.1016/j.cell.2011.03.054. PMID:21620138 doi:10.1016/j.cell.2011.03.054
↑ Chaneton B, Hillmann P, Zheng L, Martin AC, Maddocks OD, Chokkathukalam A, Coyle JE, Jankevics A, Holding FP, Vousden KH, Frezza C, O'Reilly M, Gottlieb E. Serine is a natural ligand and allosteric activator of pyruvate kinase M2. Nature. 2012 Oct 14. doi: 10.1038/nature11540. PMID:23064226 doi:http://dx.doi.org/10.1038/nature11540

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/4b2d"

@@ Line 1: / Line 1: @@
 ==human PKM2 with L-serine and FBP bound.==
-<StructureSection load='4b2d' size='340' side='right' caption='[[4b2d]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
+<StructureSection load='4b2d' size='340' side='right'caption='[[4b2d]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[4b2d]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4B2D OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4B2D FirstGlance]. <br>
@@ Line 22: / Line 22: @@
 ==See Also==
-*[[Pyruvate Kinase|Pyruvate Kinase]]
+*[[Pyruvate kinase 3D structures|Pyruvate kinase 3D structures]]
 == References ==
 <references/>
@@ Line 28: / Line 28: @@
 </StructureSection>
 [[Category: Human]]
+[[Category: Large Structures]]
 [[Category: Pyruvate kinase]]
 [[Category: Chaneton, B]]

4b2d

From Proteopedia

Revision as of 16:36, 29 January 2020

human PKM2 with L-serine and FBP bound.

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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