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PW000120

Pw000120 View Pathway
disease

Tyrosinemia Type 2 (or Richner-Hanhart Syndrome)

Homo sapiens
Tyrosinemia II also known as Richner-Hanhart syndrome is an autosomal recessive disorder caused by a mutation in the TAT gene the encodes for tyrosine aminotransferase. A defect in this enzyme causes excess tyrosine to accumulate in the blood and urine, tyrosine crystals to form in the cornea, and increased excretion in the urine of 4-hydroxyphenylpyruvic acid, hydroxyphenyllactic acid, and p-hydroxyphenylacetic acid. Symptoms commonly appear in early childhood and include: mental retardation, photophobia (increased sensitivity to light), excessive tearing, eye redness and pain and skin lesions of the palms and soles. The patient is treated with restriction of dietary phenylalanine and tyrosine. Sometimes a tyrosine degradation inhibitor is also used to prevents the formation of fumarylacetoacetate from tyrosine. Trosinemia II is commonly misdiagnosed as herpes simplex keratitis.

PW127167

Pw127167 View Pathway
disease

Tyrosinemia Type 2 (or Richner-Hanhart Syndrome)

Homo sapiens
Tyrosinemia II also known as Richner-Hanhart syndrome is an autosomal recessive disorder caused by a mutation in the TAT gene the encodes for tyrosine aminotransferase. A defect in this enzyme causes excess tyrosine to accumulate in the blood and urine, tyrosine crystals to form in the cornea, and increased excretion in the urine of 4-hydroxyphenylpyruvic acid, hydroxyphenyllactic acid, and p-hydroxyphenylacetic acid. Symptoms commonly appear in early childhood and include: mental retardation, photophobia (increased sensitivity to light), excessive tearing, eye redness and pain and skin lesions of the palms and soles. The patient is treated with restriction of dietary phenylalanine and tyrosine. Sometimes a tyrosine degradation inhibitor is also used to prevents the formation of fumarylacetoacetate from tyrosine. Trosinemia II is commonly misdiagnosed as herpes simplex keratitis.

PW121767

Pw121767 View Pathway
disease

Tyrosinemia Type 2 (or Richner-Hanhart Syndrome)

Mus musculus
Tyrosinemia II also known as Richner-Hanhart syndrome is an autosomal recessive disorder caused by a mutation in the TAT gene the encodes for tyrosine aminotransferase. A defect in this enzyme causes excess tyrosine to accumulate in the blood and urine, tyrosine crystals to form in the cornea, and increased excretion in the urine of 4-hydroxyphenylpyruvic acid, hydroxyphenyllactic acid, and p-hydroxyphenylacetic acid. Symptoms commonly appear in early childhood and include: mental retardation, photophobia (increased sensitivity to light), excessive tearing, eye redness and pain and skin lesions of the palms and soles. The patient is treated with restriction of dietary phenylalanine and tyrosine. Sometimes a tyrosine degradation inhibitor is also used to prevents the formation of fumarylacetoacetate from tyrosine. Trosinemia II is commonly misdiagnosed as herpes simplex keratitis.

PW121765

Pw121765 View Pathway
disease

Tyrosinemia Type 3 (TYRO3)

Mus musculus
Tyrosinemia type 3, one of the three types of tyrosinemia, is a rare disorder with only a few reported cases. Tyrosinemia type 3 results from a defect in the HPD gene which codes for 4-hydroxyphenylpyruvate dioxygenase. 4-Hydroxyphenylpyruvate dioxygenase plays a role in the catabolism of tyrosine by catalyzing the conversion of 4-hydroxyphenylpyruvate to homogentisate. A defect in this enzyme causes tyrosine and phenylalanine to accumulate in the blood resulting in increased excretion of tyrosine in the urine. Tyrosinemia type 3 symptoms include: seizures, mental retardation and intermittent ataxia (occasional loss of balance and coordination).

PW000121

Pw000121 View Pathway
disease

Tyrosinemia Type 3 (TYRO3)

Homo sapiens
Tyrosinemia type 3, one of the three types of tyrosinemia, is a rare disorder with only a few reported cases. Tyrosinemia type 3 results from a defect in the HPD gene which codes for 4-hydroxyphenylpyruvate dioxygenase. 4-Hydroxyphenylpyruvate dioxygenase plays a role in the catabolism of tyrosine by catalyzing the conversion of 4-hydroxyphenylpyruvate to homogentisate. A defect in this enzyme causes tyrosine and phenylalanine to accumulate in the blood resulting in increased excretion of tyrosine in the urine. Tyrosinemia type 3 symptoms include: seizures, mental retardation and intermittent ataxia (occasional loss of balance and coordination).

PW121990

Pw121990 View Pathway
disease

Tyrosinemia Type 3 (TYRO3)

Rattus norvegicus
Tyrosinemia type 3, one of the three types of tyrosinemia, is a rare disorder with only a few reported cases. Tyrosinemia type 3 results from a defect in the HPD gene which codes for 4-hydroxyphenylpyruvate dioxygenase. 4-Hydroxyphenylpyruvate dioxygenase plays a role in the catabolism of tyrosine by catalyzing the conversion of 4-hydroxyphenylpyruvate to homogentisate. A defect in this enzyme causes tyrosine and phenylalanine to accumulate in the blood resulting in increased excretion of tyrosine in the urine. Tyrosinemia type 3 symptoms include: seizures, mental retardation and intermittent ataxia (occasional loss of balance and coordination).

PW127169

Pw127169 View Pathway
disease

Tyrosinemia Type 3 (TYRO3)

Homo sapiens
Tyrosinemia type 3, one of the three types of tyrosinemia, is a rare disorder with only a few reported cases. Tyrosinemia type 3 results from a defect in the HPD gene which codes for 4-hydroxyphenylpyruvate dioxygenase. 4-Hydroxyphenylpyruvate dioxygenase plays a role in the catabolism of tyrosine by catalyzing the conversion of 4-hydroxyphenylpyruvate to homogentisate. A defect in this enzyme causes tyrosine and phenylalanine to accumulate in the blood resulting in increased excretion of tyrosine in the urine. Tyrosinemia type 3 symptoms include: seizures, mental retardation and intermittent ataxia (occasional loss of balance and coordination).

PW000182

Pw000182 View Pathway
disease

Tyrosinemia Type I

Homo sapiens
Tyrosinemia type I, also known as fumarylacetoacetase or FAH deficiency, is the most severe type of tyrosinemia, a buildup of tyrosine in the body. It is caused by an autosomal recessive mutation in the the FAH gene that encodes for fumarylacetoacetase, an enzyme that is responsible for the last of five steps that are involved in the metabolic breakdown of tyrosine in the liver and kidneys. The lack of this enzyme's function leads to a buildup of 4-fumarylacetoacetic acid as it couldn't be broken down to fumaric acid and acetoacetic acid. This also leads to an increased concentration of maleylacetoacetic acid. This eventually leads to the increased concentration of L-tyrosine in the body. Symptoms of tyrosinemia type I include jaundice and an enlarged liver, kidney dysfunction, as well as a failure to grow, as foods with high protein and amino acids lead to increased symptoms. Additionally, individuals are more at risk for future liver cancer.

PW127155

Pw127155 View Pathway
disease

Tyrosinemia Type I

Homo sapiens
Tyrosinemia type I, also known as fumarylacetoacetase or FAH deficiency, is the most severe type of tyrosinemia, a buildup of tyrosine in the body. It is caused by an autosomal recessive mutation in the the FAH gene that encodes for fumarylacetoacetase, an enzyme that is responsible for the last of five steps that are involved in the metabolic breakdown of tyrosine in the liver and kidneys. The lack of this enzyme's function leads to a buildup of 4-fumarylacetoacetic acid as it couldn't be broken down to fumaric acid and acetoacetic acid. This also leads to an increased concentration of maleylacetoacetic acid. This eventually leads to the increased concentration of L-tyrosine in the body. Symptoms of tyrosinemia type I include jaundice and an enlarged liver, kidney dysfunction, as well as a failure to grow, as foods with high protein and amino acids lead to increased symptoms. Additionally, individuals are more at risk for future liver cancer.

PW121988

Pw121988 View Pathway
disease

Tyrosinemia Type I

Rattus norvegicus
Tyrosinemia type I, also known as fumarylacetoacetase or FAH deficiency, is the most severe type of tyrosinemia, a buildup of tyrosine in the body. It is caused by an autosomal recessive mutation in the the FAH gene that encodes for fumarylacetoacetase, an enzyme that is responsible for the last of five steps that are involved in the metabolic breakdown of tyrosine in the liver and kidneys. The lack of this enzyme's function leads to a buildup of 4-fumarylacetoacetic acid as it couldn't be broken down to fumaric acid and acetoacetic acid. This also leads to an increased concentration of maleylacetoacetic acid. This eventually leads to the increased concentration of L-tyrosine in the body. Symptoms of tyrosinemia type I include jaundice and an enlarged liver, kidney dysfunction, as well as a failure to grow, as foods with high protein and amino acids lead to increased symptoms. Additionally, individuals are more at risk for future liver cancer.