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- الأيض الثانوي (أو يسمى أيضا بالأيض المتخصص) هو مصطلح للمسارات والجزيئات الصغيرة الناتجة من الأيض والتي لا تعد مطلوبة بشكل قاطع لبقاء الكائن الحي. (ar)
- En bioquímica se denomina metabolismo secundario a aquel conjunto de reacciones bioquímicas que se producen de forma paralela al metabolismo primario vertebrador de la biología celular. Los metabolismos secundarios son aquellos compuestos orgánicos sintetizados por el organismo que no tienen un rol directo en el crecimiento o reproducción del mismo sino que cumplen funciones complementarias a las vitales, tales como comunicación intra e interespecífica, defensa contra radiación, congelación, y ataque de depredadores, patógenos o parásitos. A estos compuestos se les denomina metabolitos secundarios. Las biomoléculas que son constituyentes fundamentales en procesos vitales de los seres vivos son denominados metabolitos primarios. Estos metabolitos tienen distribución taxonómica amplia. Se puede considerar que los metabolitos primarios por excelencia son la glucosa, la ribosa, la fructosa, el ácido pirúvico, el gliceraldehído, el ácido acético (Esterificado como acetil coenzima A), el ácido oxaloacético, el ácido málico, el , el ácido palmítico, el ácido esteárico, el ácido oleico, el , el pirofosfato de isopentenilo, los 20 aminoácidos proteínicos, las bases púricas, las bases pirimidínicas y las Vitaminas del grupo B. A diferencia de lo que sucede con los metabolitos primarios, la ausencia de algún metabolito secundario no le impide la supervivencia, si bien se verá afectado por ella, a veces gravemente. Si bien las rutas metabólicas básicas (el ciclo de Krebs, por ejemplo) están muy conservadas entre especies, el metabolismo secundario, pese a que es también vital para la supervivencia del organismo, muestra una variación mayor. (es)
- Secondary metabolism (also called specialized metabolism) is a term for pathways and small molecule products of metabolism that are involved in ecological interactions, but are not absolutely required for the survival of the organism. These molecules are sometimes produced by specialized cells, such as laticifers in plants. Secondary metabolites commonly mediate antagonistic interactions, such as competition and predation, as well as mutualistic ones such as pollination and resource mutualisms. Examples of secondary metabolites include antibiotics, pigments and scents. The opposite of secondary metabolites are primary metabolites, which are considered to be essential to the normal growth or development of an organism. Secondary metabolites are produced by many microbes, plants, fungi and animals, usually living in crowded habitats, where chemical defense represents a better option than physical escape. It is very hard to distinguish primary and secondary metabolites due to often overlapping of the intermediates and pathways of primary and secondary metabolism. As an example can serve sterols, that are products of secondary metabolism, and, at the same time, represent a base for a cell structure. (en)
- 이차 대사(二次代謝, 영어: secondary metabolism)는 생태학적 상호작용에 관여하지만 생물체의 생존에 절대적으로 필요한 것은 아닌 물질대사의 경로 및 저분자 산물에 대한 용어이다. 특수 대사(特殊代謝, 영어: specialized metabolism)라고도 한다. 이들 분자는 때때로 식물의 과 같은 특수 세포에 의해 생성된다. 2차 대사산물은 일반적으로 경쟁 및 포식과 같은 적대적 상호작용 뿐만 아니라 수분 및 자원 상호작용과 같은 우호적 상호작용을 매개한다. 2차 대사산물의 예로는 항생제, 색소 및 향 등이 있다. 2차 대사산물의 반대는 생물체의 정상적인 생장 또는 발달에 필수적인 것으로 간주되는 1차 대사산물이다. 2차 대사산물은 많은 미생물, 식물, 균류 및 동물에 의해 생성되며 일반적으로 가 물리적 회피보다 더 나은 선택이 되기도 하는 밀집된 서식지에 사는 생물에 의해 생성된다. 1차 대사 및 2차 대사의 대사 중간생성물 및 대사 경로가 종종 겹치기 때문에 1차 대사산물과 2차 대사산물을 구별하는 것은 매우 어렵다. 예를 들어 2차 대사산물인 스테롤이 있으며 동시에 세포 구조에 기반함을 나타낼 수 있다. (ko)
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| rdfs:comment
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- الأيض الثانوي (أو يسمى أيضا بالأيض المتخصص) هو مصطلح للمسارات والجزيئات الصغيرة الناتجة من الأيض والتي لا تعد مطلوبة بشكل قاطع لبقاء الكائن الحي. (ar)
- En bioquímica se denomina metabolismo secundario a aquel conjunto de reacciones bioquímicas que se producen de forma paralela al metabolismo primario vertebrador de la biología celular. Los metabolismos secundarios son aquellos compuestos orgánicos sintetizados por el organismo que no tienen un rol directo en el crecimiento o reproducción del mismo sino que cumplen funciones complementarias a las vitales, tales como comunicación intra e interespecífica, defensa contra radiación, congelación, y ataque de depredadores, patógenos o parásitos. A estos compuestos se les denomina metabolitos secundarios. (es)
- Secondary metabolism (also called specialized metabolism) is a term for pathways and small molecule products of metabolism that are involved in ecological interactions, but are not absolutely required for the survival of the organism. These molecules are sometimes produced by specialized cells, such as laticifers in plants. Secondary metabolites commonly mediate antagonistic interactions, such as competition and predation, as well as mutualistic ones such as pollination and resource mutualisms. Examples of secondary metabolites include antibiotics, pigments and scents. The opposite of secondary metabolites are primary metabolites, which are considered to be essential to the normal growth or development of an organism. (en)
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