title: [Natural history of molecular pathology].
abstract: The author recalls the main stages of biosynthesis of proteins based on molecular pathology : transcription of DNA into messenger RNA, the genetic code, translation of protein molecules and regulation of their synthesis. Examples are then given of qualitative and quantitative disturbances. Qualitative disturbances with synthesis of abnormal proteins, or protein diseases of protein structure, together with their consequences. Quantitative disorders, with modified synthesis of normal proteins, result very often from abnormalities of structural genes, but also from abnormalities of transcription or translation. The author considers, in conclusion, pathological situations based on molecular abnormalities for mutations occur at random and it may be possible to correct them by genetic manipulation.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002869:Chromosome Aberrations; D002872:Chromosome Deletion; D003434:Crossing Over, Genetic; D004794:Enzyme Repression; D004798:Enzymes / Q000276:immunology / Q000378:metabolism; D005796:Genes; D005809:Genes, Regulator; D006455:Hemoglobins, Abnormal; D006801:Humans; D007926:Lesch-Nyhan Syndrome / Q000235:genetics; D008661:Metabolism, Inborn Errors / Q000235:genetics*; D009154:Mutation; D009963:Orotic Acid / Q000378:metabolism; D011164:Porphyrias / Q000235:genetics; D014176:Protein Biosynthesis; D011487:Protein Conformation; D014158:Transcription, Genetic; D014842:von Willebrand Diseases / Q000235:genetics
chemical_list: D004798:Enzymes; D006455:Hemoglobins, Abnormal; D009963:Orotic Acid
vernacular_title: Histoire naturelle de la pathologie moléculaire