Manjari Prakash

Abstract Microtubules assemble from tubulin heterodimers composed of conserved α- and β- tubulins. In many species, including humans, tubulins are expressed from multiple genes. While the resulting tubulin isotypes show only subtle sequence differences, microtubules made of distinct isotypes can differ in their dynamic behaviour, as well as in their structure, for example in the number of their protofilaments. In cells, tubulin isotypes co-polymerize into mixed-isotype microtubules.