Myosin diversity in the diatom Phaeodactylum tricornutum

Myosin diversity in the diatom Phaeodactylum tricornutum
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硅藻三角褐指藻的肌球蛋白多样性

DOI:
10.1002/cm.20431
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发表时间:
2010
期刊:
影响因子:
2.9
通讯作者:
M. Enríquez
M. Enríquez
中科院分区:
生物学4区
文献类型:
--
作者:
M. Heintzelman;M. Enríquez

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本文报道了从三角褐指藻(Phaeodactylum tricornutum)中克隆的十个肌球蛋白的结构域。三角褐指藻的几种肌球蛋白与中心硅藻Thalassiosira dangerana的肌球蛋白相似,也与卵菌Phytophthora ramorum的一种肌球蛋白相似。三角褐指藻肌球蛋白的大小从126 kDa到超过250 kDa不等,都具有大多数肌球蛋白共有的典型的头部、颈部和尾部结构域,尽管这些结构域中的每一个的变化是明显的。区别几种硅藻肌球蛋白头部结构域的特征包括N末端SH 3样结构域、靠近核苷酸结合口袋的P环和环1区域中或附近的变异以及延伸的转换器结构域。由轻链结合IQ基序定义的颈域或杠杆臂长度的变化对于预测含有1至9个IQ基序的不同硅藻肌球蛋白是明显的。在三角褐指藻肌球蛋白尾部发现的蛋白质结构域包括卷曲螺旋结构、锚蛋白重复序列、CBS结构域对、PB 1结构域、激酶结构域和FYVE-指基序。由于这些特征中的许多以前从未在任何类型的肌球蛋白中被表征,因此这些新的硅藻肌球蛋白可能会扩展已知肌球蛋白行为的库。© 2010 Wiley利斯公司
This report describes the domain architecture of ten myosins cloned from the pennate diatom Phaeodactylum tricornutum. Several of the P. tricornutum myosins show similarity to myosins from the centric diatom Thalassiosira pseudonana as well as to one myosin from the oomycete Phytophthora ramorum. The P. tricornutum myosins, ranging in size from 126 kDa to over 250 kDa, all possess the canonical head, neck and tail domains common to most myosins, though variations in each of these domains is evident. Among the features distinguishing several of the diatom myosin head domains are N‐terminal SH3‐like domains, variations in or near the P‐loop and Loop 1 regions close to the nucleotide binding pocket, and extended converter domains. Variations in the length of the neck domain or lever arm, defined by the light chain‐binding IQ motifs, are apparent with the different diatom myosins predicted to contain from one to nine IQ motifs. Protein domains found within the P. tricornutum myosin tails include regions of coiled‐coil structure, ankyrin repeats, CBS domain pairs, a PB1 domain, a kinase domain and a FYVE‐finger motif. As many of these features have never before been characterized in myosins of any type, it is likely that these new diatom myosins will expand the repertoire of known myosin behaviors. © 2010 Wiley‐Liss, Inc.
肌球蛋白的活性位点。
DOI: 10.1146/annurev.ph.58.030196.003323
发表时间: 1996
期刊: Annual review of physiology.
影响因子: --
作者:
Rayment,I;Smith,C;Yount,RG
通讯作者: Yount,RG
DOI: 10.1073/pnas.91.14.6549
发表时间: 1994-07-05
影响因子: 11.1
作者:
BEMENT, WM;HASSON, T;MOOSEKER, MS
通讯作者: MOOSEKER, MS
DOI: 10.1006/jmbi.1997.1167
发表时间: 1997-08-08
影响因子: 5.6
作者:
Heintzelman, MB;Schwartzman, JD
通讯作者: Schwartzman, JD
DOI: 10.1016/s0092-8674(05)80080-7
发表时间: 1993-10-08
期刊: CELL
影响因子: 64.5
作者:
CHENEY, RE;OSHEA, MK;MOOSEKER, MS
通讯作者: MOOSEKER, MS
肌球蛋白重链头部、颈部和尾部结构域的共同进化
DOI: 10.1073/pnas.230441597
发表时间: 2000-11-07
影响因子: 11.1
作者:
Korn, ED
通讯作者: Korn, ED