4ZRY

Crystal structure of the heterocomplex between coil 2B domains of human intermediate filament proteins keratin 1 (KRT1) and keratin 10 (KRT10)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30013 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.273 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The X-Ray Crystal Structure of the Keratin 1-Keratin 10 Helix 2B Heterodimer Reveals Molecular Surface Properties and Biochemical Insights into Human Skin Disease.

Bunick, C.G.Milstone, L.M.

(2017) J. Invest. Dermatol. 137: 142-150

  • DOI: 10.1016/j.jid.2016.08.018

  • PubMed Abstract: 
  • Keratins 1 (K1) and 10 (K10) are the primary keratins expressed in differentiated epidermis. Mutations in K1/K10 are associated with human skin diseases. We determined the crystal structure of the complex between the distal (2B) helices of K1 and K10 ...

    Keratins 1 (K1) and 10 (K10) are the primary keratins expressed in differentiated epidermis. Mutations in K1/K10 are associated with human skin diseases. We determined the crystal structure of the complex between the distal (2B) helices of K1 and K10 to better understand how human keratin structure correlates with function. The 3.3 Å resolution structure confirms many features inferred by previous biochemical analyses, but adds unexpected insights. It demonstrates a parallel, coiled-coil heterodimer with a predominantly hydrophobic intermolecular interface; this heterodimer formed a higher order complex with a second K1-K10-2B heterodimer via a Cys401K10 disulfide link, although the bond angle is unanticipated. The molecular surface analysis of K1-K10-2B identified several pockets, one adjacent to the disulfide linkage and conserved in K5-K14. The solvent accessible surface area of the K1-K10 structure is 20-25% hydrophobic. The 2B region contains mixed acidic and basic patches proximally (N-terminal), whereas it is largely acidic distally (C-terminal). Mapping of conserved and nonconserved residues between K1-K10 and K5-K14 onto the structure demonstrated the majority of unique residues align along the outer helical ridge. Finally, the structure permitted a fresh analysis of the deleterious effects caused by K1/K10 missense mutations found in patients with phenotypic skin disease.


    Organizational Affiliation

    Department of Dermatology, Yale University, New Haven, Connecticut, USA. Electronic address: christopher.bunick@yale.edu.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Keratin, type I cytoskeletal 10
A
124Homo sapiensMutation(s): 0 
Gene Names: KRT10 (KPP)
Find proteins for P13645 (Homo sapiens)
Go to Gene View: KRT10
Go to UniProtKB:  P13645
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Keratin, type II cytoskeletal 1
B
120Homo sapiensMutation(s): 0 
Gene Names: KRT1 (KRTA)
Find proteins for P04264 (Homo sapiens)
Go to Gene View: KRT1
Go to UniProtKB:  P04264
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30013 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.273 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 75.190α = 90.00
b = 75.860β = 90.00
c = 209.290γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
MOLREPphasing
XDSdata scaling
XDSdata reduction
HKL-2000data collection
HKL-2000data scaling
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Dermatology FoundationUnited States--

Revision History 

  • Version 1.0: 2016-05-18
    Type: Initial release
  • Version 1.1: 2017-01-11
    Type: Database references
  • Version 1.2: 2017-11-22
    Type: Refinement description