3.5.1.12 cDNA from a liver library encoding biotinidase cloned and sequenced 3.5.1.12 DNA and amino acid sequence determination and analysis, genotyping in patients from Austria, India, Morocco, and Spain with enzyme deficiency 3.5.1.12 enzyme expression and immunohistochemic analysis in 169 different samples of thyroid cancer, overview 3.5.1.12 genotyping of biotinidase deficiency algerian patient genes, PCR, mutation analysis reveals three mutations, c.del631C and c.1557T>G within exon 4 and c.324-325insTA in exon 3 3.5.1.12 genotyping of biotinidase deficiency american patient genes, quantitative real-time reverse-transcription PCR, most mutations in exon 4, overview 3.5.1.12 genotyping of biotinidase deficiency greek patient genes, real-time PCR 3.5.1.12 genotyping of Hungarian population, the most common biotinidase variant alleles are higher in the Hungarian population than in other Caucasian populations 3.5.1.12 PCR amplification mutational hotspot in biotinidase gene identified, causes biotinidase deficiency, located on chromosome 3p25 3.5.1.12 the variants Leu40Pro, Cys160Tyr, Asp222Asn, Asp444His, Leu446Pro, Asn489Ser and the wild type gene are expressed in HEK 293 cells