Video Experimental Relacionado
Updated: Aug 9, 2026

08:22
A Robust Polymerase Chain Reaction-based Assay for Quantifying Cytosine-guanine-guanine Trinucleotide Repeats in Fragile X Mental Retardation-1 Gene
Published on: September 16, 2019
Trimetilaminuria leve causada por variantes comunes en el gen FMO3
Lancet (London, England)
|September 15, 1999
Resumen
Las variantes comunes en el gen FMO3 causan trimetillaminuria leve al reducir la actividad de la enzima. Esta deficiencia de FMO3 tiene implicaciones clínicas más allá del olor corporal.
Área de la Ciencia:
- La bioquímica es la bioquímica.
- Genética La genética.
- Trastornos metabólicos Los trastornos metabólicos son trastornos metabólicos que se producen en el cuerpo.
Sus antecedentes:
- La trimetilaminuria, caracterizada por un olor a pescado, a menudo está relacionada con mutaciones en el gen FMO3.
- La enzima monooxigenasa 3 (FMO3) que contiene flavina juega un papel crucial en el metabolismo de los compuestos que contienen nitrógeno.
Objetivo del estudio:
- Para investigar el impacto de las variantes comunes del gen FMO3 en la actividad enzimática.
- Para evaluar la relevancia clínica de la deficiencia de FMO3 más allá del característico olor a pescado.
Principales métodos:
- Análisis de las variantes genéticas comunes del gen FMO3.
- Evaluación in vivo de la actividad de la enzima FMO3.
- Evaluación clínica de pacientes con deficiencia de FMO3.
Principales resultados:
- Las variantes comunes de FMO3 conducen a una reducción significativa de la actividad de la enzima FMO3 in vivo.
- Se observó trimetilaminuria de leve a transitoria en individuos con estas variantes.
- Las manifestaciones clínicas se extendieron más allá del olor corporal, lo que sugiere implicaciones más amplias de la deficiencia de FMO3.
Conclusiones:
- Las variantes comunes del gen FMO3 son una causa de trimetillaminuria leve debido a la función enzimática reducida.
- La deficiencia de FMO3 tiene una relevancia clínica que puede extenderse más allá del olor corporal desagradable.
- Se necesita más investigación para comprender completamente el espectro clínico de la deficiencia de FMO3.
Videos de Conceptos Relacionados
Meiosis I
Meiosis is a carefully orchestrated set of cell divisions, the goal of which—in humans—is to produce haploid sperm or eggs, each containing half the number of chromosomes present in somatic cells elsewhere in the body. Meiosis I is the first such division, and involves several key steps, among them: condensation of replicated chromosomes in diploid cells; the pairing of homologous chromosomes and their exchange of information; and finally, the separation of homologous chromosomes by a...
Mutations
Overview
Translation
Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Animal Mitochondrial Genetics
Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
Alternative RNA Splicing
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
Translation
Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life

