Dyneins are microtubule-based AAA(+) motor complexes that power ciliary beating, cell division, cell migration and intracellular transport and comprise cytoplasmic and axonemal isoforms. They consist of a motor domain that contains a ring-shaped head ...
Dyneins are microtubule-based AAA(+) motor complexes that power ciliary beating, cell division, cell migration and intracellular transport and comprise cytoplasmic and axonemal isoforms. They consist of a motor domain that contains a ring-shaped head with six AAA-domains, a coiled-coil stalk with a microtubule binding domain (MTBD) and a linker [1-5] This entry represents the lid domain found at the C-terminal of the third AAA+ ATPase domain in dyneins [1-5].
This domain is found in human cytoplasmic dynein-2 proteins. Cytoplasmic dynein-2 (dynein-2) performs intraflagellar transport and is associated with human skeletal ciliophathies. Dyneins share a conserved motor domain that couples cycles of ATP hydr ...
This domain is found in human cytoplasmic dynein-2 proteins. Cytoplasmic dynein-2 (dynein-2) performs intraflagellar transport and is associated with human skeletal ciliophathies. Dyneins share a conserved motor domain that couples cycles of ATP hydrolysis with conformational changes to produce movement. Structural analysis reveal that the motor's ring consists of six AAA+ domains (ATPases associated with various cellular activities (AAA1-AAA6). This is the third nucleotide binding sites in the dynein motor. However, AAA3 has lost the catalytic residues necessary for ATP hydrolysis (the Walker B glutamate, the arginine finger, sensor-I and sensor-II motifs) [1].
This entry includes dynein heavy chain (DYN1) from yeast, which is a cytoplasmic dynein that acts as a motor for intracellular retrograde motility of vesicles and organelles along microtubules. This entry represents the AAA+ ATPase lid domain [1-5].
This domain is found in human cytoplasmic dynein-2 proteins. Cytoplasmic dynein-2 (dynein-2) performs intraflagellar transport and is associated with human skeletal ciliopathies. Dyneins share a conserved motor domain that couples cycles of ATP hydro ...
This domain is found in human cytoplasmic dynein-2 proteins. Cytoplasmic dynein-2 (dynein-2) performs intraflagellar transport and is associated with human skeletal ciliopathies. Dyneins share a conserved motor domain that couples cycles of ATP hydrolysis with conformational changes to produce movement. Structural analysis reveal that the motor's ring consists of six AAA+ domains (ATPases associated with various cellular activities (AAA1-AAA6). This is the fifth AAA+ domain subdomain AAA5S. Structural analysis reveal that it is the coiled-coil buttress interface. The relative movement of AAA5S together with the stalk (AAA4S), is coupled to rearrangements in the AAA+ ring. Closure of the AAA1 site and the rigid body movement of AAA2-AAA4 force the AAA4/AAA5 interface to close and the AAA6L subdomain to rotate towards the ring centre. The AAA5S subdomain rotates as a unit together with AAA6L, and this movement pulls the buttress relative to the stalk [1].
The 380 kDa motor unit of dynein belongs to the AAA class of chaperone-like ATPases. The core of the 380 kDa motor unit contains a concatenated chain of six AAA modules, of which four correspond to the ATP binding sites with P-loop signatures describ ...
The 380 kDa motor unit of dynein belongs to the AAA class of chaperone-like ATPases. The core of the 380 kDa motor unit contains a concatenated chain of six AAA modules, of which four correspond to the ATP binding sites with P-loop signatures described previously, and two are modules in which the P loop has been lost in evolution. This particular family is the D4 ATP-binding region of the motor [1].
