The con80 domain of katanin is the C-terminal region of the protein that binds to the N-terminal domain of katanin-p60, the catalytic ATPase. The complex associates with a specific subregion of the mitotic spindle leading to increased microtubule dis ...
The con80 domain of katanin is the C-terminal region of the protein that binds to the N-terminal domain of katanin-p60, the catalytic ATPase. The complex associates with a specific subregion of the mitotic spindle leading to increased microtubule disassembly and targeting of p60 to the spindle poles [1]. The assembly and function of the mitotic spindle requires the activity of a number of microtubule-binding proteins. Katanin, a heterodimeric microtubule-severing ATPase, is found localized at mitotic spindle poles. A proposed model is that katanin is targeted to spindle poles through a combination of direct microtubule binding by the p60 subunit and through interactions between the WD40 domain and an unknown protein [2].
Katanin is an ATP-dependent microtubule severing protein composed of 60kDa (katanin-p60) and 80kDa (katanin-p80) subunits (KATNA1 and KATNB1, respectively) [1-4]. In mammals, there are two additional A-like subunits (KATNAL1 and KATNAL2) and one add ...
Katanin is an ATP-dependent microtubule severing protein composed of 60kDa (katanin-p60) and 80kDa (katanin-p80) subunits (KATNA1 and KATNB1, respectively) [1-4]. In mammals, there are two additional A-like subunits (KATNAL1 and KATNAL2) and one additional B-like subunit (KATNBL1) [4]. KATNA1 has the enzymatic activity for microtubule severing and plays a key role in cytoskeletal reorganisation, while KATNB is the regulatory subunit. Formation of the katanin A/B heterodimer is mediated by the N-terminal Microtubule Interacting and Trafficking domain (MIT, represented in this entry) of KATNA1/KATNAL1) and a conserved C-terminal domain of KATNB [2]. This domain is organised in an antiparallel three-helix bundle [1].
