6X94 image
Deposition Date 2020-06-02
Release Date 2020-11-04
Last Version Date 2023-10-18
Entry Detail
PDB ID:
6X94
Keywords:
LIGASE
Title:
An orthogonal seryl-tRNA synthetase/tRNA pair for noncanonical amino acid mutagenesis in Escherichia coli
Biological Source:
Source Organism:
Methanosarcina mazei (strain ATCC BAA-159 / DSM 3647 / Goe1 / Go1 / JCM 11833 / OCM 88) (Taxon ID: 192952)
Host Organism:
Escherichia coli BL21(DE3)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.45 Å
R-Value Free:
0.16
R-Value Work:
0.14
R-Value Observed:
0.14
Space Group:
C 2 2 21
6X94 validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Serine--tRNA ligase
Gene (Uniprot):serS
Mutations:E402V E416V K419P V420E
Chain IDs:A
Chain Length:426
Number of Molecules:1
Biological Source:Methanosarcina mazei (strain ATCC BAA-159 / DSM 3647 / Goe1 / Go1 / JCM 11833 / OCM 88)
UniProt ID:Q8PYJ6 Pfam ID:PF02403, PF00587
Ligand Molecules
CL
DMS
K
PEG
SCN
SSA
Primary Citation
An orthogonal seryl-tRNA synthetase/tRNA pair for noncanonical amino acid mutagenesis in Escherichia coli.
Bioorg.Med.Chem. 28 115662 115662 (2020)
PMID: 33069069 DOI: 10.1016/j.bmc.2020.115662

Abstact

We report the development of the orthogonal amber-suppressor pair Archaeoglobus fulgidus seryl-tRNA (Af-tRNASer)/Methanosarcina mazei seryl-tRNA synthetase (MmSerRS) in Escherichia coli. Furthermore, the crystal structure of MmSerRS was solved at 1.45 Å resolution, which should enable structure-guided engineering of its active site to genetically encode small, polar noncanonical amino acids (ncAAs).

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Primary Citation of related structures
6X94