5EEG: Crystal Structure Of Carminomycin-4-o-methyltransferase Dnrk In Complex With Tetrazole-sah

S-adenosyl-l-methionine (AdoMet) is an essential enzyme cosubstrate in fundamental biology with an expanding range of biocatalytic and therapeutic applications. We report the design, synthesis, and evaluation of stable, functional AdoMet isosteres that are resistant to the primary contributors to AdoMet degradation (depurination, intramolecular cyclization, and sulfonium epimerization). Corresponding biochemical and structural studies demonstrate the AdoMet surrogates to serve as competent enzyme cosubstrates and to bind a prototypical class I model methyltransferase (DnrK) in a manner nearly identical to AdoMet. Given this conservation in function and molecular recognition, the isosteres presented are anticipated to serve as useful surrogates in other AdoMet-dependent processes and may also be resistant to, and/or potentially even inhibit, other therapeutically relevant AdoMet-dependent metabolic transformations (such as the validated drug target AdoMet decarboxylase). This work also highlights the ability of the prototypical class I model methyltransferase DnrK to accept non-native surrogate acceptors as an enabling feature of a new high-throughput methyltransferase assay.
PDB ID: 5EEGDownload
MMDB ID: 135065
PDB Deposition Date: 2015/10/22
Updated in MMDB: 2015/12
Experimental Method:
x-ray diffraction
Resolution: 2.26  Å
Source Organism:
Similar Structures:
Biological Unit for 5EEG: dimeric; determined by author and by software (PISA)
Molecular Components in 5EEG
Label Count Molecule
Proteins (2 molecules)
Carminomycin 4-o-methyltransferase Dnrk
Molecule annotation
Chemicals (2 molecules)
* Click molecule labels to explore molecular sequence information.

Citing MMDB