Cooperativity between the beta-tubulin carboxy tail and the body of the molecule is required for microtubule function.
Cooperativity between the beta-tubulin carboxy tail and the body of the molecule is required for microtubule function.
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β-微管蛋白羧基尾部和分子主体之间的协同作用是微管功能所必需的。
DOI:
10.1002/cm.20318
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发表时间:
2008
影响因子:
--
通讯作者:
Raff,ElizabethC
中科院分区:
文献类型:
--
作者:
Popodi,EllenM;Hoyle,HenryD;Turner,FRudolf;Raff,ElizabethC
UsingDrosophilaspermatogenesis as a model, we show that function of the β‐tubulin C‐terminal tail (CTT) is not independent of the body of the molecule. For optimal microtubule function, the β‐tubulin CTT and body must match. β2 is the only β‐tubulin used in meiosis and spermatid differentiation. β1‐tubulin is used in basal bodies, but β1 cannot replace β2. However, when β1 is co‐expressed with β2, both β‐tubulins are equally incorporated into all microtubules, and males exhibit near wild type fertility. In contrast, co‐expression of β2β1C and β1β2C, two reciprocal chimeric molecules with bodies and tails swapped, results in defects in meiosis, cytoskeletal microtubules, and axonemes; males produce few functional sperm and few or no progeny. In these experiments, all the same β‐tubulin parts are present, but unlike the co‐assembled native β‐tubulins, the “trans” configuration of the co‐assembled chimeras is poorly functional. Our data thus reveal essential intra‐molecular interactions between the CTT and other parts of the β‐tubulin molecule, even though the CTT is a flexible surface feature of tubulin heterodimers and microtubules. In addition, we show thatDrosophilasperm tail length depends on the total tubulin pool available for axoneme assembly and spermatid elongation.D. melanogasterand otherDrosophilaspecies have extraordinarily long sperm tails, the length of which is remarkably constant in wild type flies. We show that in males of experimental genotypes that express wild type tubulins but have half the amount of the normal tubulin pool size, sperm tails are substantially shorter than wild type. Cell Motil. Cytoskeleton 2008. © 2008 Wiley‐Liss, Inc.
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DOI:
--
发表时间:
1976
期刊:
影响因子:
--
作者:
R. Mustacich;B. Ware
通讯作者:
B. Ware
影响因子:
56.9
作者:
B. Jacobson;D. Branton
通讯作者:
D. Branton
影响因子:
3.1
作者:
S. Ohnishi;K. Horiuchi;K. Horiuchi;M. Jurman;K. Sadanaga
通讯作者:
K. Sadanaga
DOI:
--
发表时间:
1977
期刊:
Biochimica et Biophysica Acta
影响因子:
--
作者:
S. A. Newton;N. C. Ford;K. Langley;D. Sattelle
通讯作者:
D. Sattelle
影响因子:
1.6
作者:
T. Maeda;S. Fujime
通讯作者:
T. Maeda;S. Fujime