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.

6rir

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 07:16, 15 April 2020

Crystal structure of phosphorylated Rab8a in complex with the Rab-binding domain of RILPL2

Structural highlights

6rir 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:	, ,
NonStd Res:
Gene:	RAB8A, MEL, RAB8 (HUMAN), RILPL2, RLP2 (HUMAN)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[RAB8A_HUMAN] May be involved in vesicular trafficking and neurotransmitter release. Together with RAB11A, RAB3IP, the exocyst complex, PARD3, PRKCI, ANXA2, CDC42 and DNMBP promotes transcytosis of PODXL to the apical membrane initiation sites (AMIS), apical surface formation and lumenogenesis. Together with MYO5B and RAB11A participates in epithelial cell polarization.^[1] ^[2] [RIPL2_HUMAN] Involved in cell shape and neuronal morphogenesis, positively regulating the establishment and maintenance of dendritic spines (By similarity). Plays a role in cellular protein transport, including protein transport away from primary cilia (By similarity). May function via activation of RAC1 and PAK1 (By similarity).[UniProtKB:Q6AYA0][UniProtKB:Q99LE1]

Publication Abstract from PubMed

Rab8a is associated with the dynamic regulation of membrane protrusions in polarized cells. Rab8a is one of several Rab GTPases that are substrates of leucine-rich repeat kinase 2 (LRRK2), a serine/threonine kinase that is linked to Parkinson's disease. Rab8a is phosphorylated at T72 (pT72) in its switch 2 helix and recruits the phospho-specific effector RILPL2, which subsequently regulates ciliogenesis. Here, we report the crystal structure of phospho-Rab8a (pRab8a) in complex with the RH2 (RILP homology) domain of RILPL2. The complex is a heterotetramer with RILPL2 forming a central alpha-helical dimer that bridges two pRab8a molecules. The N termini of the alpha helices cross over, forming an X-shaped cap (X-cap) that orients Arg residues from RILPL2 toward pT72. X-cap residues critical for pRab8a binding are conserved in JIP3 and JIP4, which also interact with LRRK2-phosphorylated Rab10. We propose a general mode of recognition for phosphorylated Rab GTPases by this family of phospho-specific effectors.

Structural Basis for Rab8a Recruitment of RILPL2 via LRRK2 Phosphorylation of Switch 2.,Waschbusch D, Purlyte E, Pal P, McGrath E, Alessi DR, Khan AR Structure. 2020 Feb 1. pii: S0969-2126(20)30005-8. doi:, 10.1016/j.str.2020.01.005. PMID:32017888^[3]

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

References

↑ Bryant DM, Datta A, Rodriguez-Fraticelli AE, Peranen J, Martin-Belmonte F, Mostov KE. A molecular network for de novo generation of the apical surface and lumen. Nat Cell Biol. 2010 Nov;12(11):1035-45. doi: 10.1038/ncb2106. Epub 2010 Oct 3. PMID:20890297 doi:10.1038/ncb2106
↑ Roland JT, Bryant DM, Datta A, Itzen A, Mostov KE, Goldenring JR. Rab GTPase-Myo5B complexes control membrane recycling and epithelial polarization. Proc Natl Acad Sci U S A. 2011 Feb 15;108(7):2789-94. doi:, 10.1073/pnas.1010754108. Epub 2011 Jan 31. PMID:21282656 doi:10.1073/pnas.1010754108
↑ Waschbusch D, Purlyte E, Pal P, McGrath E, Alessi DR, Khan AR. Structural Basis for Rab8a Recruitment of RILPL2 via LRRK2 Phosphorylation of Switch 2. Structure. 2020 Feb 1. pii: S0969-2126(20)30005-8. doi:, 10.1016/j.str.2020.01.005. PMID:32017888 doi:http://dx.doi.org/10.1016/j.str.2020.01.005

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

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

@@ Line 3: / Line 3: @@
 <StructureSection load='6rir' size='340' side='right'caption='[[6rir]], [[Resolution|resolution]] 1.77&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[6rir]] 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=6RIR OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6RIR FirstGlance]. <br>
+<table><tr><td colspan='2'>[[6rir]] 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=6RIR OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6RIR FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=GTP:GUANOSINE-5-TRIPHOSPHATE'>GTP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=GTP:GUANOSINE-5-TRIPHOSPHATE'>GTP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
 <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=TPO:PHOSPHOTHREONINE'>TPO</scene></td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">RAB8A, MEL, RAB8 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN]), RILPL2, RLP2 ([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=6rir FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6rir OCA], [http://pdbe.org/6rir PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6rir RCSB], [http://www.ebi.ac.uk/pdbsum/6rir PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6rir ProSAT]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6rir FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6rir OCA], [http://pdbe.org/6rir PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6rir RCSB], [http://www.ebi.ac.uk/pdbsum/6rir PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6rir ProSAT]</span></td></tr>
 </table>
 == Function ==

6rir

From Proteopedia

Revision as of 07:16, 15 April 2020

Crystal structure of phosphorylated Rab8a in complex with the Rab-binding domain of RILPL2

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox