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his work represents a large-scale update on pathogenic mutations in the PCCA and PCCB genes causing Propionic acidemia (PA), and confirms previous reports indicating a major causative role of mutation-induced protein destabilization
The data indicate that amino acid/nucleotide metabolism-related genes OGDH, PPAT and PCCA acquire somatic mutations in microsatellite instability-high gastric cancers and colorectal cancers and that mutational intratumoral heterogeneity may occur in at least some of these tumors.
The majority of patients had mutations in the PCCA gene (18/25). A total of 26 mutations were noted: 20 in the PCCA gene and 6 in PCCB gene. Seventeen mutations were novel (14 in PCCA and 3 in PCCB). The SNP c.937C>T (p.Arg313Ter), was noted in 9/36 (25%) alleles in the PCCA gene
Ten propionic acidemia mutations were confirmed, including 8 affecting the PCCA gene and 2 affecting the PCCB gene
Two PCCA mutations, c.229C-->T (p.R77W) and c.1262A-->C (p.Q421P), were identified in a PCCA-deficient patient.
Mutation analysis of the PCCA gene identified homozygous c.1284+1G>A in patient 1, c.230G>A (p.R77Q) and c.1855C>T (p.R619X) in patient 2, homozygous c.2125T>C (p.S709P) in patient 3, and only one mutant allele, c.231+1G>T in patient 4.
Thsi study presented that Propionic acidemia(PCCA mutation) associated with visual hallucinations
propionyl CoA carboxylase alpha polypeptide intronic variations causing aberrantly spliced messenger RNA is associated with propionic and methylmalonic acidemia.
cryo-electron microscopy (cryo-EM) reconstruction at 15-A resolution
pathogenicity of 11 mutations by expression studies and correlation of genotype-phenotype in PCCA-deficient propionic acidemia patients.
Data reported 9 novel PCCA gene mutations and represents an extensive update of the mutational study of propionic acidemia providing important information about the worldwide distribution of PA mutations.
analysis of propionyl-CoA carboxylase containing pathogenic mutations in the beta subunit (R165W, E168K, and R410W) and one PCCB polymorphism (A497V) and their structural and functional effects
analysis of PCCA and PCCB mutations in propionic acidemia
This work describes for the first time the high frequency of large genomic deletions in the PCCA gene, which could be due to the characteristics of the PCCA gene structure and its abundance in intronic repetitive elements.
Activities of propionyl-CoA carboxylase were not significantly different in pancreatic islets of patients with type 2 diabetes from those of the control.
we have investigated mitochondrial function, superoxide anion and H2O2 levels and oxidative damage in relevant tissues of the hypomorphic mice(knockout mouse model for the Pcca gene), to gain insight into the pathophysiological processes contributing to the multiorgan complications observed in propionic acidemia
A single intravenous injection of adeno-associated virus 2/8 or AAVrh10 expressing PCCA into propionic academia hypomorphic mice decreased systemic propionylcarnitine and methyl citrate for up to 1.5 years.
The protein encoded by this gene is the alpha subunit of the heterodimeric mitochondrial enzyme Propionyl-CoA carboxylase. PCCA encodes the biotin-binding region of this enzyme. Mutations in either PCCA or PCCB (encoding the beta subunit) lead to an enzyme deficiency resulting in propionic acidemia. Multiple transcript variants encoding different isoforms have been found for this gene.
PCCase alpha subunit
, pccA complementation group
, propanoyl-CoA:carbon dioxide ligase alpha subunit
, propionyl Coenzyme A carboxylase, alpha polypeptide
, propionyl-CoA carboxylase alpha chain, mitochondrial
, PCCase subunit alpha
, Propionyl Coenzyme A carboxylase alpha polypeptide
, propanoyl-CoA:carbon dioxide ligase subunit alpha
, propionyl-coenzyme A carboxylase, alpha polypeptide
, propionyl-COA carboxylase alpha chain, mitochondrial
, propionyl-CoA carboxylase alpha chain
, propionyl CoA-carboxylase alpha
, propionyl-Coenzyme A carboxylase, alpha polypeptide
, propionyl CoA carboxylase, alpha polypeptide