Expression of kinesin heavy chain isoforms in retinal pigment epithelial cells.

Expression of kinesin heavy chain isoforms in retinal pigment epithelial cells.
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视网膜色素上皮细胞中驱动蛋白重链亚型的表达。

DOI:
10.1002/cm.970310108
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发表时间:
1995
影响因子:
--
通讯作者:
Burnside,B
Burnside,B
中科院分区:
--
文献类型:
--
作者:
King-Smith,C;Bost-Usinger,L;Burnside,B

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为了研究驱动蛋白在硬骨鱼视网膜色素上皮(RPE)色素颗粒迁移中的可能作用,我们研究了驱动蛋白重链(KHC)在RPE中的表达和分布。用两种充分表征的KHC抗体(H2和HD)探测的鱼RPE裂解物的印迹在120 kD处显示出显著条带。第三种KHC抗体(SUK 4)在118处识别一条带,表明硬骨鱼RPE中存在两种KHC同种型。使用与KHC马达结构域保守区域同源的引物对RPE mRNA进行逆转录酶-聚合酶链反应(RT-PCR),结果与KHC马达结构域保守区域同源,基于部分氨基酸序列鉴定出两种推定的KHC基因(FKIF 1和FKIF 5)。先前的研究已经证明在RPE中色素颗粒聚集需要微管。此外,报告的微管极性方向在RPE顶端的预测是一致的驱动蛋白在色素颗粒聚集的作用。使用H2的KHC在分离的RPE细胞中的免疫荧光定位揭示了在整个细胞体上的斑驳分布,与色素颗粒没有可检测到的选择性关联,即使在聚集色素颗粒时固定的细胞中也是如此。显微注射KHC抗体对色素颗粒聚集或分散没有影响,尽管这三种抗体中的每一种都显示出在其他系统中阻断驱动蛋白功能。因此,我们没有发现KHC在RPE色素颗粒聚集中起作用的证据。然而,两种KHC亚型可能参与RPE中的其他微管依赖性过程。
To examine the possible role of kinesin in pigment granule migration in the retinal pigment epithelium (RPE) of teleosts, we investigated the expression and distribution of kinesin heavy chain (KHC) in RPE. Blots of fish RPE lysates probed with two well‐characterized antibodies to KHC (H2 and HD) displayed a prominent band at 120 kD. A third KHC antibody (SUK4) recognized a band at 118 suggesting the presence of two KHC isoforms in teleost RPE. Reverse transcriptase‐polymerase chain reaction (RT‐PCR) of mRNA from RPE using primers homologous to conserved regions of the KHC motor domain resulted in the homologous to conserved regions of the KHC motor domain resulted in the identification of two putative KHC genes (FKIF1 and FKIF5) based on partial amino acid sequences. Previous studies had demonstrated a requirement for microtubules in pigment granule aggregation in RPE. In addition, the reported microtubule polarity orientation in RPE apical projections is consistent with a role for kinesin in pigment granule aggregation. Immunofluorescent localization of KHC in isolated RPE cells using H2 revealed a mottled distribution over the entire cell body, with no detectable selective association with pigment granules, even in cells fixed while aggregating pigment granules. Microinjected KHC antibodies had no effect on pigment granule aggregation or dispersion, although each of the three antibodies has been shown to block kinesin function in other systems. Thus we found no evidence for KHC function in RPE pigment granule aggregation. However, the two KHC isoforms may participate in other microtubule‐dependent processes in RPE.
嗜铬细胞中驱动蛋白的细胞内分布。
DOI: --
发表时间: 1994
影响因子: 6.6
作者:
Schmitz,F;Wallis,KT;Rho,M;Drenckhahn,D;Murphy,DB
通讯作者: Murphy,DB
抑制驱动蛋白重链的单克隆抗体对运动蛋白驱动的微管运动。
DOI: 10.1083/jcb.107.6.2657
发表时间: 1988-12
期刊: The Journal of cell biology
影响因子: --
作者:
Ingold AL;Cohn SA;Scholey JM
通讯作者: Scholey JM
鱿鱼驱动蛋白重链的一级结构和分析。
DOI: --
发表时间: 1990
期刊: The Journal of biological chemistry
影响因子: --
作者:
Kosik,KS;Orecchio,LD;Schnapp,B;Inouye,H;Neve,RL
通讯作者: Neve,RL
DOI: --
发表时间: 1992-02
影响因子: 4
作者:
D. Cole;W. Cande;R. Baskin;D. Skoufias;AN CHRISTOPHERJ.HOG;J. Scholey
通讯作者: D. Cole;W. Cande;R. Baskin;D. Skoufias;AN CHRISTOPHERJ.HOG;J. Scholey
有机阴离子转运抑制剂抑制 RPE 中 cAMP 诱导的色素颗粒聚集。
DOI: --
发表时间: 1994
影响因子: 4.4
作者:
Garcia,DM;Burnside,B
通讯作者: Burnside,B