3zyk

From Proteopedia

(Difference between revisions)

Current revision

Structure of CALM (PICALM) ANTH domain

Structural highlights

3zyk is a 2 chain structure with sequence from Rattus norvegicus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.8Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

PICAL_RAT Cytoplasmic adapter protein that plays a critical role in clathrin-mediated endocytosis which is important in processes such as internalization of cell receptors, synaptic transmission or removal of apoptotic cells. Recruits AP-2 and attaches clathrin triskelions to the cytoplasmic side of plasma membrane leading to clathrin-coated vesicles (CCVs) assembly. Furthermore, regulates clathrin-coated vesicle size and maturation by directly sensing and driving membrane curvature. In addition to binding to clathrin, mediates the endocytosis of small R-SNARES (Soluble NSF Attachment Protein REceptors) between plasma membranes and endosomes including VAMP2, VAMP3, VAMP4, VAMP7 or VAMP8. In turn, PICALM-dependent SNARE endocytosis is required for the formation and maturation of autophagic precursors. Modulates thereby autophagy and the turnover of autophagy substrates such as MAPT/TAU or amyloid precursor protein cleaved C-terminal fragment (APP-CTF).[UniProtKB:Q13492]^[1]

Publication Abstract from PubMed

SNAREs provide a large part of the specificity and energy needed for membrane fusion and, to do so, must be localized to their correct membranes. Here, we show that the R-SNAREs VAMP8, VAMP3, and VAMP2, which cycle between the plasma membrane and endosomes, bind directly to the ubiquitously expressed, PtdIns4,5P(2)-binding, endocytic clathrin adaptor CALM/PICALM. X-ray crystallography shows that the N-terminal halves of their SNARE motifs bind the CALM(ANTH) domain as helices in a manner that mimics SNARE complex formation. Mutation of residues in the CALM:SNARE interface inhibits binding in vitro and prevents R-SNARE endocytosis in vivo. Thus, CALM:R-SNARE interactions ensure that R-SNAREs, required for the fusion of endocytic clathrin-coated vesicles with endosomes and also for subsequent postendosomal trafficking, are sorted into endocytic vesicles. CALM's role in directing the endocytosis of small R-SNAREs may provide insight into the association of CALM/PICALM mutations with growth retardation, cognitive defects, and Alzheimer's disease.

The Molecular Basis for the Endocytosis of Small R-SNAREs by the Clathrin Adaptor CALM.,Miller SE, Sahlender DA, Graham SC, Honing S, Robinson MS, Peden AA, Owen DJ Cell. 2011 Nov 23;147(5):1118-31. PMID:22118466^[2]

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

References

↑ Kim HL, Kim JA. Purification of clathrin assembly protein from rat liver. Exp Mol Med. 2000 Dec 31;32(4):222-6. PMID:11190274 doi:10.1038/emm.2000.36
↑ Miller SE, Sahlender DA, Graham SC, Honing S, Robinson MS, Peden AA, Owen DJ. The Molecular Basis for the Endocytosis of Small R-SNAREs by the Clathrin Adaptor CALM. Cell. 2011 Nov 23;147(5):1118-31. PMID:22118466 doi:10.1016/j.cell.2011.10.038

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/3zyk"

@@ Line 3: / Line 3: @@
 <StructureSection load='3zyk' size='340' side='right'caption='[[3zyk]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3zyk]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Buffalo_rat Buffalo rat]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ZYK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3ZYK FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3zyk]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ZYK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3ZYK FirstGlance]. <br>
-</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1hg2|1hg2]], [[1hg5|1hg5]], [[1hfa|1hfa]], [[1hf8|1hf8]], [[3zym|3zym]], [[3zyl|3zyl]]</div></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.8&#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=3zyk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3zyk OCA], [https://pdbe.org/3zyk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3zyk RCSB], [https://www.ebi.ac.uk/pdbsum/3zyk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3zyk ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[https://www.uniprot.org/uniprot/PICA_RAT PICA_RAT]] Assembly protein recruiting clathrin and adaptor protein complex 2 (AP2) to cell membranes at sites of coated-pit formation and clathrin-vesicle assembly. May be required to determine the amount of membrane to be recycled, possibly by regulating the size of the clathrin cage. Involved in AP2-dependent clathrin-mediated endocytosis at the neuromuscular junction (By similarity).[UniProtKB:Q13492]
+[https://www.uniprot.org/uniprot/PICAL_RAT PICAL_RAT] Cytoplasmic adapter protein that plays a critical role in clathrin-mediated endocytosis which is important in processes such as internalization of cell receptors, synaptic transmission or removal of apoptotic cells. Recruits AP-2 and attaches clathrin triskelions to the cytoplasmic side of plasma membrane leading to clathrin-coated vesicles (CCVs) assembly. Furthermore, regulates clathrin-coated vesicle size and maturation by directly sensing and driving membrane curvature. In addition to binding to clathrin, mediates the endocytosis of small R-SNARES (Soluble NSF Attachment Protein REceptors) between plasma membranes and endosomes including VAMP2, VAMP3, VAMP4, VAMP7 or VAMP8. In turn, PICALM-dependent SNARE endocytosis is required for the formation and maturation of autophagic precursors. Modulates thereby autophagy and the turnover of autophagy substrates such as MAPT/TAU or amyloid precursor protein cleaved C-terminal fragment (APP-CTF).[UniProtKB:Q13492]<ref>PMID:11190274</ref>
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 22: / Line 22: @@
 __TOC__
 </StructureSection>
-[[Category: Buffalo rat]]
 [[Category: Large Structures]]
-[[Category: Graham, S C]]
+[[Category: Rattus norvegicus]]
-[[Category: Honing, S]]
+[[Category: Graham SC]]
-[[Category: Miller, S E]]
+[[Category: Honing S]]
-[[Category: Owen, D J]]
+[[Category: Miller SE]]
-[[Category: Peden, A A]]
+[[Category: Owen DJ]]
-[[Category: Robinson, M S]]
+[[Category: Peden AA]]
-[[Category: Sahlender, D A]]
+[[Category: Robinson MS]]
-[[Category: Adaptor protein]]
+[[Category: Sahlender DA]]
-[[Category: Ap180]]
-[[Category: Endobrevin]]
-[[Category: Endocytosis]]
-[[Category: Plasma membrane]]
-[[Category: Synaptobrevin]]
-[[Category: Vamp2]]
-[[Category: Vamp3]]

3zyk

From Proteopedia

Current revision

Structure of CALM (PICALM) ANTH domain

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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