This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

6jb7

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Current revision

Crystal structure of Ub-conjugated Ube2K C92K&K97A mutant (isopeptide linkage), 2.1 A resolution

Structural highlights

6jb7 is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.1Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

UBE2K_HUMAN Accepts ubiquitin from the E1 complex and catalyzes its covalent attachment to other proteins. In vitro, in the presence or in the absence of BRCA1-BARD1 E3 ubiquitin-protein ligase complex, catalyzes the synthesis of 'Lys-48'-linked polyubiquitin chains. Does not transfer ubiquitin directly to but elongates monoubiquitinated substrate protein. Mediates the selective degradation of short-lived and abnormal proteins, such as the endoplasmic reticulum-associated degradation (ERAD) of misfolded lumenal proteins. Ubiquitinates huntingtin. May mediate foam cell formation by the suppression of apoptosis of lipid-bearing macrophages through ubiquitination and subsequence degradation of p53/TP53. Proposed to be involved in ubiquitination and proteolytic processing of NF-kappa-B; in vitro supports ubiquitination of NFKB1. In case of infection by cytomegaloviruses may be involved in the US11-dependent degradation of MHC class I heavy chains following their export from the ER to the cytosol. In case of viral infections may be involved in the HPV E7 protein-dependent degradation of RB1.^[1] ^[2] ^[3] ^[4] ^[5] ^[6] ^[7] ^[8]

References

↑ Kalchman MA, Graham RK, Xia G, Koide HB, Hodgson JG, Graham KC, Goldberg YP, Gietz RD, Pickart CM, Hayden MR. Huntingtin is ubiquitinated and interacts with a specific ubiquitin-conjugating enzyme. J Biol Chem. 1996 Aug 9;271(32):19385-94. PMID:8702625
↑ Kikuchi J, Furukawa Y, Kubo N, Tokura A, Hayashi N, Nakamura M, Matsuda M, Sakurabayashi I. Induction of ubiquitin-conjugating enzyme by aggregated low density lipoprotein in human macrophages and its implications for atherosclerosis. Arterioscler Thromb Vasc Biol. 2000 Jan;20(1):128-34. PMID:10634809
↑ Furukawa Y, Kubo N, Kikuchi J, Tokura A, Fujita N, Sakurabayashi I. Regulation of macrophage-specific gene expression by degenerated lipoproteins. Electrophoresis. 2000 Jan;21(2):338-46. PMID:10675012 doi:<338::AID-ELPS338>3.0.CO;2-9 http://dx.doi.org/10.1002/(SICI)1522-2683(20000101)21:2<338::AID-ELPS338>3.0.CO;2-9
↑ Yamada M, Ohnishi J, Ohkawara B, Iemura S, Satoh K, Hyodo-Miura J, Kawachi K, Natsume T, Shibuya H. NARF, an nemo-like kinase (NLK)-associated ring finger protein regulates the ubiquitylation and degradation of T cell factor/lymphoid enhancer factor (TCF/LEF). J Biol Chem. 2006 Jul 28;281(30):20749-60. Epub 2006 May 19. PMID:16714285 doi:http://dx.doi.org/10.1074/jbc.M602089200
↑ Flierman D, Coleman CS, Pickart CM, Rapoport TA, Chau V. E2-25K mediates US11-triggered retro-translocation of MHC class I heavy chains in a permeabilized cell system. Proc Natl Acad Sci U S A. 2006 Aug 1;103(31):11589-94. Epub 2006 Jul 25. PMID:16868077 doi:http://dx.doi.org/0605215103
↑ Christensen DE, Brzovic PS, Klevit RE. E2-BRCA1 RING interactions dictate synthesis of mono- or specific polyubiquitin chain linkages. Nat Struct Mol Biol. 2007 Oct;14(10):941-8. Epub 2007 Sep 16. PMID:17873885 doi:http://dx.doi.org/10.1038/nsmb1295
↑ David Y, Ziv T, Admon A, Navon A. The E2 ubiquitin conjugating enzymes direct polyubiquitination to preferred lysines. J Biol Chem. 2010 Jan 8. PMID:20061386 doi:M109.089003
↑ Oh KJ, Kalinina A, Bagchi S. Destabilization of Rb by human papillomavirus E7 is cell cycle dependent: E2-25K is involved in the proteolysis. Virology. 2010 Jan 5;396(1):118-24. doi: 10.1016/j.virol.2009.10.018. Epub 2009, Nov 10. PMID:19906396 doi:http://dx.doi.org/10.1016/j.virol.2009.10.018

1 Structural highlights
2 Function
3 See Also
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/6jb7"

@@ Line 1: / Line 1: @@
-'''Unreleased structure'''
-The entry 6jb7 is ON HOLD
+==Crystal structure of Ub-conjugated Ube2K C92K&K97A mutant (isopeptide linkage), 2.1 A resolution==
+<StructureSection load='6jb7' size='340' side='right'caption='[[6jb7]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[6jb7]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6JB7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6JB7 FirstGlance]. <br>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.1&#8491;</td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=6jb7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6jb7 OCA], [https://pdbe.org/6jb7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6jb7 RCSB], [https://www.ebi.ac.uk/pdbsum/6jb7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6jb7 ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/UBE2K_HUMAN UBE2K_HUMAN] Accepts ubiquitin from the E1 complex and catalyzes its covalent attachment to other proteins. In vitro, in the presence or in the absence of BRCA1-BARD1 E3 ubiquitin-protein ligase complex, catalyzes the synthesis of 'Lys-48'-linked polyubiquitin chains. Does not transfer ubiquitin directly to but elongates monoubiquitinated substrate protein. Mediates the selective degradation of short-lived and abnormal proteins, such as the endoplasmic reticulum-associated degradation (ERAD) of misfolded lumenal proteins. Ubiquitinates huntingtin. May mediate foam cell formation by the suppression of apoptosis of lipid-bearing macrophages through ubiquitination and subsequence degradation of p53/TP53. Proposed to be involved in ubiquitination and proteolytic processing of NF-kappa-B; in vitro supports ubiquitination of NFKB1. In case of infection by cytomegaloviruses may be involved in the US11-dependent degradation of MHC class I heavy chains following their export from the ER to the cytosol. In case of viral infections may be involved in the HPV E7 protein-dependent degradation of RB1.<ref>PMID:8702625</ref> <ref>PMID:10634809</ref> <ref>PMID:10675012</ref> <ref>PMID:16714285</ref> <ref>PMID:16868077</ref> <ref>PMID:17873885</ref> <ref>PMID:20061386</ref> <ref>PMID:19906396</ref>
-Authors: Lee, J.-G., Youn, H.-S., Lee, Y., An, J.Y., Park, K.R., Kang, J.Y., Mun, S.A., Park, J., Park, T., Jin, M.W., Yang, J., Eom, S.H.
+==See Also==
+*[[3D structures of ubiquitin|3D structures of ubiquitin]]
-Description: Crystal structure of Ub-conjugated Ube2K C92K&K97A mutant (isopeptide linkage), 2.1 A resolution
+*[[3D structures of ubiquitin conjugating enzyme|3D structures of ubiquitin conjugating enzyme]]
-[[Category: Unreleased Structures]]
+== References ==
-[[Category: An, J.Y]]
+<references/>
-[[Category: Youn, H.-S]]
+__TOC__
-[[Category: Park, T]]
+</StructureSection>
-[[Category: Park, K.R]]
+[[Category: Homo sapiens]]
-[[Category: Mun, S.A]]
+[[Category: Large Structures]]
-[[Category: Kang, J.Y]]
+[[Category: An JY]]
-[[Category: Yang, J]]
+[[Category: Eom SH]]
-[[Category: Park, J]]
+[[Category: Jin MW]]
-[[Category: Lee, J.-G]]
+[[Category: Kang JY]]
-[[Category: Lee, Y]]
+[[Category: Lee J-G]]
-[[Category: Eom, S.H]]
+[[Category: Lee Y]]
-[[Category: Jin, M.W]]
+[[Category: Mun SA]]
+[[Category: Park J]]
+[[Category: Park KR]]
+[[Category: Park T]]
+[[Category: Yang J]]
+[[Category: Youn H-S]]

6jb7

From Proteopedia

Current revision

Crystal structure of Ub-conjugated Ube2K C92K&K97A mutant (isopeptide linkage), 2.1 A resolution

Structural highlights

Function

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox