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Literature summary for 3.4.21.105 extracted from

  • Gaffney, K.A.; Hong, H.
    The rhomboid protease GlpG has weak interaction energies in its active site hydrogen bond network (2019), J. Gen. Physiol., 151, 282-291 .
    View publication on PubMedView publication on EuropePMC

Crystallization (Commentary)

Crystallization (Comment) Organism
analysis of interaction energies among the active site residues His254, Ser201, and Asn154, which form a hydrogen bonding network. In mild detergent, the active site residues are weakly coupled with interaction energies of ?1.4 kcal/mol between His254 and Ser201 and ?0.2 kcal/mol between Ser201 and Asn154. These residues are important for function and also for the folding cooperativity of GlpG. The weak interaction between Ser and His in the catalytic dyad may partly explain the unusually slow proteolysis by GlpG Escherichia coli

Protein Variants

Protein Variants Comment Organism
H254A complete loss of activity Escherichia coli
N154A complete loss of activity Escherichia coli
N154A/H254A mutation induces larger destabilization Escherichia coli
N154A/S201A mutation induces larger destabilization Escherichia coli
S201A complete loss of activity Escherichia coli
S201A/H254A double mutation on the catalytic dyad, yields a smaller decrease in the stability than individual single mutations Escherichia coli

Organism

Organism UniProt Comment Textmining
Escherichia coli P09391
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