2MAB

Untangling the Solution Structure of C-Terminal Domain of Aciniform Spidroin


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

wwPDB Validation 3D Report Full Report



Literature

Structure and function of C-terminal domain of aciniform spidroin

Wang, S.Huang, W.Yang, D.

(2014) Biomacromolecules 15: 468-477

  • DOI: 10.1021/bm401709v
  • Primary Citation of Related Structures:  
    2MAB

  • PubMed Abstract: 
  • C-terminal domains (CTDs) of various spidroins are relatively conserved in the amino acid sequence and have been suggested to perform similar functions. Here, we solved the structure of the CTD of an aciniform spidroin using NMR spectroscopy with a t ...

    C-terminal domains (CTDs) of various spidroins are relatively conserved in the amino acid sequence and have been suggested to perform similar functions. Here, we solved the structure of the CTD of an aciniform spidroin using NMR spectroscopy with a two-point mutant and studied its functional role with several constructs. The CTDs of aciniform, major, and minor ampullate spidroins adopt the same domain-swapping dimeric folding although their sequence identities are 24-40%. Unlike CTDs of major and minor ampullate spidroins, the aciniform CTD had no obvious effects on preventing spidroins from aggregation in storage but slightly enhanced protein assembly under shear force. The differential functions may result from significant differences in detailed structures and properties of repetitive regions of various types of spidroins. Nevertheless, all CTDs may have a common functional role: dimerization of the CTD doubles the size of silk proteins, reduces the number of chain ends, and thus leads to fewer chain end defects in the fibers formed.


    Organizational Affiliation

    Department of Biological Sciences, National University of Singapore , 14 Science Drive 4, Singapore 117543.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ACINIFORM SPIDROINA, B109Trichonephila antipodianaMutation(s): 0 
Find proteins for X1WB74 (Nephila antipodiana)
Explore X1WB74 
Go to UniProtKB:  X1WB74
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 
  • OLDERADO: 2MAB Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2013-07-09 
  • Released Date: 2014-03-05 
  • Deposition Author(s): Wang, S., Yang, D.

Revision History 

  • Version 1.0: 2014-03-05
    Type: Initial release