microtubule
Any of the long, generally straight, hollow tubes of internal diameter 12-15 nm and external diameter 24 nm found in a wide variety of eukaryotic cells; each consists (usually) of 13 protofilaments of polymeric tubulin, staggered in such a manner that the tubulin monomers are arranged in a helical pattern on the microtubular surface, and with the alpha/beta axes of the tubulin subunits parallel to the long axis of the tubule; exist in equilibrium with pool of tubulin monomers and can be rapidly assembled or disassembled in response to physiological stimuli; concerned with force generation, e.g. in the spindle.
GO:0099513
polymeric cytoskeletal fiber
is_a
GO:0015630
microtubule cytoskeleton
part_of
microtubuli
exact
microtubulus
exact
neurotubule
narrow
SPBC2F12.13 SPAC664.10 SPAC27D7.13c SPCC895.07 SPAC25G10.07c SPBC1706.01 SPCC320.13c SPBC11B10.05c SPBC32F12.04 SPCC736.14 SPAC8C9.17c SPBC1604.20c SPBC15D4.01c SPBC800.05c SPBC902.06 SPAC458.04c SPAC3C7.12 SPAC3A11.14c SPAC1093.06c SPBC27.02c SPBC26H8.07c SPAC13D6.05 SPAC3G9.12 SPCC1223.06 SPAC890.02c SPAC1834.07 SPBC16A3.15c SPAC144.14 SPAC589.08c SPAC16A10.05c SPBC25B2.07c SPAC1687.10 SPCC1223.15c SPBC1685.15c SPAPB1A10.09 SPBC1604.14c SPAC18G6.15 SPBC20F10.06