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NTIS 바로가기생명과학회지 = Journal of life science, v.27 no.3 = no.203, 2017년, pp.370 - 381
Protein dephosphorylation is important for cellular regulation, which is catalyzed by protein phosphatases. Among protein phosphatases, carboxy-terminal domain (CTD) phosphatases are recently emerging and new functional roles of them have been revealed. There are 7 CTD phosphatases in human genome, ...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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인산화의 과정은 어떻게 진행되는가? | 생명체에 있어 그 생명 현상의 유지를 위해 여러 가지의 신호 전달 과정이 발달되어 있는데, 이 중 인산화(phosphorylation)의 과정은 매우 중요한 의미를 가지고 있다는 점이 잘 알려져 있다[24]. 이러한 인산화의 과정은 생체 내에 존재하는 다양한 인산화 단백질(kinase)들에 의해 진행된다. 한편 이러한 인산화의 역 반응으로써 탈 인산화(dephosphorylation) 과정이 존재하여 생체의 항상성을 유지하게 된다. | |
C-말단 도메인의 ‘Y1S2P3T4S5P6S7’ 서열이 반복적으로 존재하고 있는 영역의 역할은 무엇인가? | 인간 RNA 중합 효소 II에서는‘Y1S2P3T4S5P6S7’ 서열이 52번 반복되고 효모의 경우에는 26번 반복된다[78]. 이 영역은 세포 생존에 매우 중요한 부분이며 RNA 중합 효소 II를 여러가지 방법으로 제어하는 역할을 수행하는 것으로 알려져 있다[33]. 이 C-말단 도메인의 서열에서 알 수 있듯이 인산화가 가능한 tyrosine (Y)과 serine (S), threonine (T) 잔기가 여러 개 존재하고 있으며, 인산화 된 이 잔기들을 탈 인산화 하는 탈 인산화 효소들이 존재하게 된다. | |
단백질 탈 인산화 효소는 어떻게 분류되는가? | 단백질 탈 인산화 효소(protein phosphatase)는 세포 내에서 매우 중요하고도 다양한 역할을 수행한다. 단백질 탈 인산화 효소는 탈 인산화 하는 잔기에 따라 serine/threonine 탈인산화 효소들과 tyrosine 탈 인산화 효소들로 분류된다. 이러한 단백질 탈 인산화 효소들은 현재 인간의 genome에서 약 150여종이 발견된다[35]. |
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