4ZBW

Crystal structure of death effector domain of Caspase8 in Homo Sapiens


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.204 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Crystal structure of the death effector domains of caspase-8

Shen, C.Yue, H.Pei, J.Guo, X.Wang, T.Quan, J.M.

(2015) Biochem.Biophys.Res.Commun. 463: 297-302

  • DOI: 10.1016/j.bbrc.2015.05.054
  • Also Cited By: 5H33, 5H31

  • PubMed Abstract: 
  • Caspase-8 is a key mediator in various biological processes such as apoptosis, necroptosis, inflammation, T/B cells activation, and cell motility. Caspase-8 is characterized by the N-terminal tandem death effector domains (DEDs) and the C-terminal ca ...

    Caspase-8 is a key mediator in various biological processes such as apoptosis, necroptosis, inflammation, T/B cells activation, and cell motility. Caspase-8 is characterized by the N-terminal tandem death effector domains (DEDs) and the C-terminal catalytic protease domain. The DEDs mediate diverse functions of caspase-8 through homotypic interactions of the DEDs between caspase-8 and its partner proteins. Here, we report the first crystal structure of the DEDs of caspase-8. The overall structure of the DEDs of caspase-8 is similar to that of the DEDs of vFLIP MC159, which is composed of two tandem death effector domains that closely associate with each other in a head-to-tail manner. Structural analysis reveals distinct differences in the region connecting helices α2b and α4b in the second DED of the DEDs between caspase-8 and MC159, in which the helix α3b in MC159 is replaced by a loop in caspase-8. Moreover, the different amino acids in this region might confer the distinct features of solubility and aggregation for the DEDs of caspase-8 and MC159.


    Organizational Affiliation

    Key Laboratory of Structural Biology, School of Chemical Biology & Biotechnology, Peking University, Shenzhen Graduate School, Shenzhen 518055, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Caspase-8
A, B
190Homo sapiensMutation(s): 2 
Gene Names: CASP8 (MCH5)
EC: 3.4.22.61
Find proteins for Q14790 (Homo sapiens)
Go to Gene View: CASP8
Go to UniProtKB:  Q14790
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.204 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 51.360α = 113.34
b = 52.106β = 116.89
c = 56.596γ = 90.12
Software Package:
Software NamePurpose
CrystalCleardata reduction
d*TREKdata scaling
PHENIXrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
MOSTChina2012CB722602
MOSTChina2013CB911501
SZSTIChinaGGJS20130329180714793

Revision History 

  • Version 1.0: 2015-07-01
    Type: Initial release