The Na+/H+ antiport genes namedTaNHX1andTaNHX2were cloned by screening a salt_stressed wheat cDNA library using rice Na+/H+ antiport cDNA fragment as the probe. Sequencing analysis showed thatTaNHX1was 2 029 bp in le...The Na+/H+ antiport genes namedTaNHX1andTaNHX2were cloned by screening a salt_stressed wheat cDNA library using rice Na+/H+ antiport cDNA fragment as the probe. Sequencing analysis showed thatTaNHX1was 2 029 bp in length and contained a complete ORF of 1 638 bp. TheTaNHX1encodes a polypeptide of 546 amino acids with a transmembrane domain DIFFIYLLPPI.TaNHX2was 1 693 bp in length consisting of a partial ORF followed by a 3′_UTR of 808 bp. The amino acid sequence of these two genes were about 70% identical to the known NHX genes from rice, Arabidopsis and Atriplex. A RT_PCR assay showed that the level ofTaNHX1transcripts was increased and reached a steady higher level in the seedlings after 3 h treatment with 400 mmol/L NaCl.展开更多
盐诱导激酶(salt-inducible kinase,SIK)是属于单磷酸腺苷激活蛋白激酶/蔗糖非酵解1(adenosine monophosphate-activated protein kinase and sucrose non-fermenting 1,AMPK/SNF1)家族的丝氨酸/苏氨酸蛋白激酶。SIK自1998年被发现以来...盐诱导激酶(salt-inducible kinase,SIK)是属于单磷酸腺苷激活蛋白激酶/蔗糖非酵解1(adenosine monophosphate-activated protein kinase and sucrose non-fermenting 1,AMPK/SNF1)家族的丝氨酸/苏氨酸蛋白激酶。SIK自1998年被发现以来,越来越多的功能被人们证实和认可。现已发现,SIK在能量代谢、细胞信号转导、细胞周期、肿瘤、黑素原生成等诸多方面有重要作用。通过查阅近些年相关文献,在此重点总结一下SIK2功能的研究进展。展开更多
盐诱导激酶(salt-inducible kinases,SIKs)属于腺苷酸活化激酶(AMP-activated protein kinase,AMPK)家族,主要调控环磷酸苷效应元件结合蛋白(cAMP-response element binding protein,CREB)转录共激活因子(CREB-regulated transcription ...盐诱导激酶(salt-inducible kinases,SIKs)属于腺苷酸活化激酶(AMP-activated protein kinase,AMPK)家族,主要调控环磷酸苷效应元件结合蛋白(cAMP-response element binding protein,CREB)转录共激活因子(CREB-regulated transcription coactivators,CRTCs)的胞核-胞质分布,对CRTC-CREB复合物的合成起到调节作用,从而间接影响CREB目的基因的转录与表达,影响多种生理过程,例如能量代谢、细胞周期进程和细胞凋亡。过去对SIKs的相关研究主要集中在外周系统疾病,包括肿瘤、高血压和糖异生等。近年来越来越多的研究开始探索SIKs和中枢神经系统疾病的关联性,如抑郁症、睡眠障碍、癫痫和阿尔茨海默病等都存在SIKs水平异常的情况,这提示SIKs信号失调参与这些疾病的病理过程,SIKs具有成为此类疾病新治疗靶点的潜力。本文就SIKs在抑郁症、睡眠障碍及其他神经系统疾病中的作用和调控机制进行综述。展开更多
文摘The Na+/H+ antiport genes namedTaNHX1andTaNHX2were cloned by screening a salt_stressed wheat cDNA library using rice Na+/H+ antiport cDNA fragment as the probe. Sequencing analysis showed thatTaNHX1was 2 029 bp in length and contained a complete ORF of 1 638 bp. TheTaNHX1encodes a polypeptide of 546 amino acids with a transmembrane domain DIFFIYLLPPI.TaNHX2was 1 693 bp in length consisting of a partial ORF followed by a 3′_UTR of 808 bp. The amino acid sequence of these two genes were about 70% identical to the known NHX genes from rice, Arabidopsis and Atriplex. A RT_PCR assay showed that the level ofTaNHX1transcripts was increased and reached a steady higher level in the seedlings after 3 h treatment with 400 mmol/L NaCl.
文摘盐诱导激酶(salt-inducible kinase,SIK)是属于单磷酸腺苷激活蛋白激酶/蔗糖非酵解1(adenosine monophosphate-activated protein kinase and sucrose non-fermenting 1,AMPK/SNF1)家族的丝氨酸/苏氨酸蛋白激酶。SIK自1998年被发现以来,越来越多的功能被人们证实和认可。现已发现,SIK在能量代谢、细胞信号转导、细胞周期、肿瘤、黑素原生成等诸多方面有重要作用。通过查阅近些年相关文献,在此重点总结一下SIK2功能的研究进展。
文摘盐诱导激酶(salt-inducible kinases,SIKs)属于腺苷酸活化激酶(AMP-activated protein kinase,AMPK)家族,主要调控环磷酸苷效应元件结合蛋白(cAMP-response element binding protein,CREB)转录共激活因子(CREB-regulated transcription coactivators,CRTCs)的胞核-胞质分布,对CRTC-CREB复合物的合成起到调节作用,从而间接影响CREB目的基因的转录与表达,影响多种生理过程,例如能量代谢、细胞周期进程和细胞凋亡。过去对SIKs的相关研究主要集中在外周系统疾病,包括肿瘤、高血压和糖异生等。近年来越来越多的研究开始探索SIKs和中枢神经系统疾病的关联性,如抑郁症、睡眠障碍、癫痫和阿尔茨海默病等都存在SIKs水平异常的情况,这提示SIKs信号失调参与这些疾病的病理过程,SIKs具有成为此类疾病新治疗靶点的潜力。本文就SIKs在抑郁症、睡眠障碍及其他神经系统疾病中的作用和调控机制进行综述。
