期刊
PHYSICAL REVIEW LETTERS
卷 93, 期 19, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.93.198104
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资金
- NIGMS NIH HHS [GM-59288] Funding Source: Medline
- NINDS NIH HHS [NS-13560] Funding Source: Medline
Microtubules are hollow cylinders composed of tubulin heterodimers that stack into linear protofilaments that interact laterally to form the microtubule wall. Synchrotron x-ray diffraction of microtubules under increasing osmotic stress shows they transition to rectangular bundles with noncircular buckled cross sections, followed by hexagonally packed bundles. This new technique probes the strength of interprotofilamen bonds, yielding insight into the mechanism by which associated proteins and the chemotherapy drug taxol stabilize microtubules.
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