1P23

STRUCTURE OF THE DIMERIZED CYTOPLASMIC DOMAIN OF P23 IN SOLUTION, NMR, 10 STRUCTURES


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: ENERGY, AGREEMENT WITH EXPERIMENTAL DATA 

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This is version 1.3 of the entry. See complete history


Literature

Structure of the cytoplasmic domain of p23 in solution: implications for the formation of COPI vesicles.

Weidler, M.Reinhard, C.Friedrich, G.Wieland, F.T.Rosch, P.

(2000) Biochem Biophys Res Commun 271: 401-408

  • DOI: 10.1006/bbrc.2000.2511
  • Primary Citation of Related Structures:  
    1P23

  • PubMed Abstract: 
  • Coatomer, the coat protein complex of coat protein (COPI) vesicles, is involved in the budding of these vesicles. Its interaction with the cytoplasmic domains of some p24-family members, type I transmembrane proteins of the Golgi, has been shown to induce a conformational change of coatomer that initiates polymerization of the complex ...

    Coatomer, the coat protein complex of coat protein (COPI) vesicles, is involved in the budding of these vesicles. Its interaction with the cytoplasmic domains of some p24-family members, type I transmembrane proteins of the Golgi, has been shown to induce a conformational change of coatomer that initiates polymerization of the complex. From stoichiometrical data it is likely that interaction of coatomer with the small tail domains involves an oligomeric form of the p24 proteins. Here we present the structure of peptide analogs of the cytoplasmic domain of p23, a member of the p24 family, as determined by two-dimensional nuclear magnetic resonance spectroscopy in the presence of 2,2,2-trifluoroethanol. An improved strategy for structure calculation revealed that the tail domain peptides form alpha-helices and adopt a tetrameric state. Based on these results we propose an initial model for the binding of coatomer by p23 and the induced conformational change of coatomer that results in its polymerization, curvature of the Golgi membrane to form a bud, and finally a COPI-coated vesicle.


    Organizational Affiliation

    Lehrstuhl für Biopolymere, Universität Bayreuth, Germany. mw@ibwf.uni-kl.de



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TRANSMEMBRANE PROTEIN TMP21 PRECURSORA, B, C, D14N/AMutation(s): 0 
UniProt
Find proteins for Q28735 (Oryctolagus cuniculus)
Explore Q28735 
Go to UniProtKB:  Q28735
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ28735
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: ENERGY, AGREEMENT WITH EXPERIMENTAL DATA 
  • OLDERADO: 1P23 Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-06-07
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-02-23
    Changes: Database references, Derived calculations, Other