About: N-end rule

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The N-end rule is a rule that governs the rate of protein degradation through recognition of the N-terminal residue of proteins. The rule states that the N-terminal amino acid of a protein determines its half-life (time after which half of the total amount of a given polypeptide is degraded). The rule applies to both eukaryotic and prokaryotic organisms, but with different strength, rules, and outcome. In eukaryotic cells, these N-terminal residues are recognized and _targeted by ubiquitin ligases, mediating ubiquitination thereby marking the protein for degradation. The rule was initially discovered by Alexander Varshavsky and co-workers in 1986. However, only rough estimations of protein half-life can be deduced from this 'rule', as N-terminal amino acid modification can lead to variabili

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  • قاعدة الطرف الأميني أو قاعدة الطرف (بالإنجليزية: N-End Rule )‏ تصف تأثير الطرف الأميني لبروتين على سرعة تحلله Proteolyse . (ar)
  • Die N-End Rule beschreibt den Einfluss der N-terminalen Aminosäure eines Proteins auf seine Abbau­geschwindigkeit. Dieser Zusammenhang wurde erstmals 1986 von einer Arbeitsgruppe um den russisch-amerikanischen Biochemiker Alexander Varshavsky am Massachusetts Institute of Technology beschrieben. (de)
  • The N-end rule is a rule that governs the rate of protein degradation through recognition of the N-terminal residue of proteins. The rule states that the N-terminal amino acid of a protein determines its half-life (time after which half of the total amount of a given polypeptide is degraded). The rule applies to both eukaryotic and prokaryotic organisms, but with different strength, rules, and outcome. In eukaryotic cells, these N-terminal residues are recognized and _targeted by ubiquitin ligases, mediating ubiquitination thereby marking the protein for degradation. The rule was initially discovered by Alexander Varshavsky and co-workers in 1986. However, only rough estimations of protein half-life can be deduced from this 'rule', as N-terminal amino acid modification can lead to variability and anomalies, whilst amino acid impact can also change from organism to organism. Other degradation signals, known as degrons, can also be found in sequence. (en)
  • La regola dell'N-terminale è una regola che definisce il tasso di degradazione delle proteine attraverso il riconoscimento del residuo N-terminale proteico. La regola stabilisce che l'aminoacido N-terminale di una proteina determina il suo tempo di dimezzamento (tempo dopo il quale viene degradata la metà della quantità totale di un dato polipeptide). La regola si applica sia agli organismi eucarioti che a quelli procarioti, ma con intensità, caratteristiche e risultati diversi. Nelle cellule eucariotiche, questi residui N-terminali sono riconosciuti e presi di mira dalle , che mediano l'ubiquitinazione, segnando così la proteina per la degradazione. La regola è stata inizialmente scoperta da Alexander Varshavsky e collaboratori nel 1986 presso l'Istituto di tecnologia del Massachusetts. Tuttavia, di questa "regola" si possono dedurre solo stime approssimative dell'emivita delle proteine, poiché cambiamenti degli aminoacidi N-terminali possono portare a variabilità e anomalie, mentre l'impatto degli aminoacidi possono dipendere dell'organismo coinvolto. Altri segnali di degradazione, noti come degroni, possono anche essere trovati nella sequenza. (it)
  • Zasada końca N – reguła chemiczna, zgodnie z którą charakter N-końcowych aminokwasów białka jest ważnym czynnikiem regulującym okres półtrwania (prawdopodobieństwo degradacji). Ma zastosowanie zarówno u organizmów eukariotycznych, jak i prokariotycznych, ale z różną siłą. Jest to jedynie oszacowanie; modyfikacja aminokwasu na końcu N może to zmienić. Również wpływ określonego aminokwasu może zmieniać się w zależności od organizmu. Ponadto w sekwencji białka można znaleźć inne sygnały degradacji. Zasada końca N została sformułowana przez amerykańskiego biochemika rosyjskiego pochodzenia, w 1986 roku. (pl)
  • N端法則是指蛋白質氨基端上的胺基酸種類,與此蛋白質的存活時間相關。最早由亚历山大·瓦尔沙夫斯基和他的同事们在1986年提出。在移除蛋白質轉譯後第一個胺基酸甲硫胺酸,或是經過轉譯後修飾後的蛋白質氨基端上的胺基酸種類,不論在細菌中或是經人類的泛素降解途徑,其胺基酸種類對於大部分蛋白質的存活時間(半衰期)關連如下: * 穩定 * 甲硫胺酸、甘胺酸、丙胺酸、絲胺酸、蘇胺酸、纈胺酸,大於20小時 * 異亮胺酸、谷氨醯胺,約30分鐘 * 不穩定 * 酪胺酸、谷胺酸,約10分鐘 * 脯胺酸,約7分鐘 * 亮胺酸、苯丙胺酸、天冬胺酸、賴胺酸,約3分鐘 * 精胺酸,約2分鐘 (zh)
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  • قاعدة الطرف الأميني أو قاعدة الطرف (بالإنجليزية: N-End Rule )‏ تصف تأثير الطرف الأميني لبروتين على سرعة تحلله Proteolyse . (ar)
  • Die N-End Rule beschreibt den Einfluss der N-terminalen Aminosäure eines Proteins auf seine Abbau­geschwindigkeit. Dieser Zusammenhang wurde erstmals 1986 von einer Arbeitsgruppe um den russisch-amerikanischen Biochemiker Alexander Varshavsky am Massachusetts Institute of Technology beschrieben. (de)
  • N端法則是指蛋白質氨基端上的胺基酸種類,與此蛋白質的存活時間相關。最早由亚历山大·瓦尔沙夫斯基和他的同事们在1986年提出。在移除蛋白質轉譯後第一個胺基酸甲硫胺酸,或是經過轉譯後修飾後的蛋白質氨基端上的胺基酸種類,不論在細菌中或是經人類的泛素降解途徑,其胺基酸種類對於大部分蛋白質的存活時間(半衰期)關連如下: * 穩定 * 甲硫胺酸、甘胺酸、丙胺酸、絲胺酸、蘇胺酸、纈胺酸,大於20小時 * 異亮胺酸、谷氨醯胺,約30分鐘 * 不穩定 * 酪胺酸、谷胺酸,約10分鐘 * 脯胺酸,約7分鐘 * 亮胺酸、苯丙胺酸、天冬胺酸、賴胺酸,約3分鐘 * 精胺酸,約2分鐘 (zh)
  • The N-end rule is a rule that governs the rate of protein degradation through recognition of the N-terminal residue of proteins. The rule states that the N-terminal amino acid of a protein determines its half-life (time after which half of the total amount of a given polypeptide is degraded). The rule applies to both eukaryotic and prokaryotic organisms, but with different strength, rules, and outcome. In eukaryotic cells, these N-terminal residues are recognized and _targeted by ubiquitin ligases, mediating ubiquitination thereby marking the protein for degradation. The rule was initially discovered by Alexander Varshavsky and co-workers in 1986. However, only rough estimations of protein half-life can be deduced from this 'rule', as N-terminal amino acid modification can lead to variabili (en)
  • La regola dell'N-terminale è una regola che definisce il tasso di degradazione delle proteine attraverso il riconoscimento del residuo N-terminale proteico. La regola stabilisce che l'aminoacido N-terminale di una proteina determina il suo tempo di dimezzamento (tempo dopo il quale viene degradata la metà della quantità totale di un dato polipeptide). La regola si applica sia agli organismi eucarioti che a quelli procarioti, ma con intensità, caratteristiche e risultati diversi. Nelle cellule eucariotiche, questi residui N-terminali sono riconosciuti e presi di mira dalle , che mediano l'ubiquitinazione, segnando così la proteina per la degradazione. La regola è stata inizialmente scoperta da Alexander Varshavsky e collaboratori nel 1986 presso l'Istituto di tecnologia del Massachusetts. T (it)
  • Zasada końca N – reguła chemiczna, zgodnie z którą charakter N-końcowych aminokwasów białka jest ważnym czynnikiem regulującym okres półtrwania (prawdopodobieństwo degradacji). Ma zastosowanie zarówno u organizmów eukariotycznych, jak i prokariotycznych, ale z różną siłą. Jest to jedynie oszacowanie; modyfikacja aminokwasu na końcu N może to zmienić. Również wpływ określonego aminokwasu może zmieniać się w zależności od organizmu. Ponadto w sekwencji białka można znaleźć inne sygnały degradacji. (pl)
rdfs:label
  • قاعدة الطرف الأميني (ar)
  • N-End Rule (de)
  • Regola dell'N-Terminale (it)
  • N-end rule (en)
  • Zasada końca N (pl)
  • N端法則 (zh)
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