6LFH

X-ray crystal structure of chemically synthesized human lysozyme

  • Classification: HYDROLASE
  • Organism(s): Homo sapiens
  • Mutation(s): No 

  • Deposited: 2019-12-02 Released: 2020-07-08 
  • Deposition Author(s): Kar, A., Das, A., Mandal, K.
  • Funding Organization(s): Department of Biotechnology (India)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.46 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.163 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Efficient Chemical Protein Synthesis using Fmoc-Masked N-Terminal Cysteine in Peptide Thioester Segments.

Kar, A.Mannuthodikayil, J.Singh, S.Biswas, A.Dubey, P.Das, A.Mandal, K.

(2020) Angew Chem Int Ed Engl 59: 14796-14801

  • DOI: 10.1002/anie.202000491
  • Primary Citation of Related Structures:  
    6LFH

  • PubMed Abstract: 
  • We report an operationally simple method to facilitate chemical protein synthesis by fully convergent and one-pot native chemical ligations utilizing the fluorenylmethyloxycarbonyl (Fmoc) moiety as an N-masking group of the N-terminal cysteine of the middle peptide thioester segment(s) ...

    We report an operationally simple method to facilitate chemical protein synthesis by fully convergent and one-pot native chemical ligations utilizing the fluorenylmethyloxycarbonyl (Fmoc) moiety as an N-masking group of the N-terminal cysteine of the middle peptide thioester segment(s). The Fmoc group is stable to the harsh oxidative conditions frequently used to generate peptide thioesters from peptide hydrazide or o-aminoanilide. The ready availability of Fmoc-Cys(Trt)-OH, which is routinely used in Fmoc solid-phase peptide synthesis, where the Fmoc group is pre-installed on cysteine residue, minimizes additional steps required for the temporary protection of the N-terminal cysteinyl peptides. The Fmoc group is readily removed after ligation by short exposure (<7 min) to 20 % piperidine at pH 11 in aqueous conditions at room temperature. Subsequent native chemical ligation reactions can be performed in presence of piperidine in the same solution at pH 7.


    Organizational Affiliation

    TIFR Centre for Interdisciplinary Sciences, Tata Institute of Fundamental Research Hyderabad, 36/p Gopanpally, Hyderabad, Telangana, 500046, India.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Lysozyme CA [auth X]130Homo sapiensMutation(s): 0 
Gene Names: LYZLZM
EC: 3.2.1.17
Find proteins for P61626 (Homo sapiens)
Explore P61626 
Go to UniProtKB:  P61626
NIH Common Fund Data Resources
PHAROS:  P61626
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.46 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.163 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 32.95α = 90
b = 56.41β = 90
c = 61.22γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Department of Biotechnology (India)IndiaIA/I/15/1/501847

Revision History  (Full details and data files)

  • Version 1.0: 2020-07-08
    Type: Initial release
  • Version 1.1: 2021-03-17
    Changes: Database references, Derived calculations