EC Number |
Protein Variants |
Reference |
---|
2.1.1.8 | C314T |
PCR reaction-restriction fragment length polymorphism assay is used to identify the polymorphism of the point mutation C314T of HNMT gene of 498 Chinese patients with duodenal ulcer and 151 healthy individuals. In normal controls, the allele frequency of HNMT T314 is 3.3%, which is significantly lower than American Caucasians. The HNMT T314 allele is detected in 3.5% of the duodenal ulcer patients. In cases and controls, the frequency of C/C genotypes are 93.0% and 93.4%, respectively. The HNMT T/T genotype is not found in this population. No significant differences is seen in both genotype frequencies and allele frequencies between duodenal ulcer groups and controls |
686166 |
2.1.1.8 | L208D |
mutant is severely compromised in its stability |
756090 |
2.1.1.8 | L208F |
21% of wild-type activtiy, Michaelis-Menten parameters for SAM and histamine similar to wild-type |
756090 |
2.1.1.8 | L208H |
mutant is severely compromised in its stability |
756090 |
2.1.1.8 | L208K |
substantial loss of enzymatic activity and binding affinity for histamine |
756090 |
2.1.1.8 | L208N |
mutant is severely compromised in its stability |
756090 |
2.1.1.8 | L208R |
substantial loss of enzymatic activity and binding affinity for histamine |
756090 |
2.1.1.8 | L208T |
mutant is severely compromised in its stability |
756090 |
2.1.1.8 | L208V |
48% of wild-type activity, Michaelis-Menten parameters for SAM and histamine similar to wild-type |
756090 |
2.1.1.8 | more |
subcutaneous injection of amodiaquine in mice with propionibacterium acnes-primed and lipopolysaccharide (LPS)-induced hepatitis significantly increases the histamine levels in the liver in comparison to saline treated mice. Pretreatment with amodiaquine also improves the survival rate of the hepatitis mice, and this improvement is partially associated with the decrease in serum levels of aspartate aminotransferase and alanine aminotransferase. Amodiaquine partially suppresses increases of tumor necrosis factor (TNF)-alpha in the serum and TNF-alpha mRNA expression in the liver |
686550 |