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BioAssay: AID 627441

Ratio of Kcat to Km for PAD4 Q346E mutant

Protein arginine deiminase (PAD) activity is upregulated in a number of human diseases, including rheumatoid arthritis, ulcerative colitis, and cancer. These enzymes, there are five in humans (PADs 1-4 and 6), regulate gene transcription, cellular differentiation, and the innate immune response. Building on our successful generation of F- and Cl-amidine, which irreversibly inhibit all of the more ..
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 Tested Compounds
 Tested Compounds
All(4)
 
 
Unspecified(4)
 
 
 Tested Substances
 Tested Substances
All(4)
 
 
Unspecified(4)
 
 
 Related BioAssays
 Related BioAssays
AID: 627441
Data Source: ChEMBL (776947)
Depositor Category: Literature, Extracted
BioAssay Version:
Deposit Date: 2012-09-09
Modify Date: 2014-05-26

Data Table ( Complete ):           View All Data
Tested Compounds:
Description:
Title: The development of N-alpha-(2-carboxyl)benzoyl-N(5)-(2-fluoro-1-iminoethyl)-l-ornithine amide (o-F-amidine) and N-alpha-(2-carboxyl)benzoyl-N(5)-(2-chloro-1-iminoethyl)-l-ornithine amide (o-Cl-amidine) as second generation protein arginine deiminase (PAD) inhibitors.

Abstract: Protein arginine deiminase (PAD) activity is upregulated in a number of human diseases, including rheumatoid arthritis, ulcerative colitis, and cancer. These enzymes, there are five in humans (PADs 1-4 and 6), regulate gene transcription, cellular differentiation, and the innate immune response. Building on our successful generation of F- and Cl-amidine, which irreversibly inhibit all of the PADs, a structure-activity relationship was performed to develop second generation compounds with improved potency and selectivity. Incorporation of a carboxylate ortho to the backbone amide resulted in the identification of N-alpha-(2-carboxyl)benzoyl-N(5)-(2-fluoro-1-iminoethyl)-l-ornithine amide (o-F-amidine) and N-alpha-(2-carboxyl)benzoyl-N(5)-(2-chloro-1-iminoethyl)-l-ornithine amide (o-Cl-amidine), as PAD inactivators with improved potency (up to 65-fold) and selectivity (up to 25-fold). Relative to F- and Cl-amidine, the compounds also show enhanced potency in cellulo. As such, these compounds will be versatile chemical probes of PAD function.
(PMID: 21882827)
Comment
Putative Target:

ChEMBL Target ID: 22226
Target Type: UNCHECKED
Pref Name: Unchecked
Confidence: Default value - Target unknown or has yet to be assigned
Relationship Type: Default value - Target has yet to be curated
Categorized Comment
Assay Type: Binding

Assay Data Source: Scientific Literature

Result Definitions
TIDNameDescriptionHistogramTypeUnit
OutcomeThe BioAssay activity outcomeOutcome
1Kcat/Km activity commentKcat/Km activity commentString
2Kcat/Km standard flagKcat/Km standard flagInteger
3Kcat/Km qualifierKcat/Km qualifierString
4Kcat/Km published valueKcat/Km published valueFloat/M/s
5Kcat/Km standard valueKcat/Km standard valueFloat/M/s

Data Table (Concise)
Data Table ( Complete ):     View All Data
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