>cd00124 MYSc Myosin motor domain. This catalytic (head) domain has ATPase activity and belongs to the larger group of P-loop NTPases. Myosins are actin-dependent molecular motors that play important roles in muscle contraction, cell motility, and organelle transport. The head domain is a molecular motor, which utilizes ATP hydrolysis to generate directed movement toward the plus end along actin filaments. A cyclical interaction between myosin and actin provides the driving force. Rates of ATP hydrolysis and consequently the speed of movement along actin filaments vary widely, from about 0.04 micrometer per second for myosin I to 4.5 micrometer per second for myosin II in skeletal muscle. Myosin II moves in discrete steps about 5-10 nm long and generates 1-5 piconewtons of force. Upon ATP binding, the myosin head dissociates from an actin filament. ATP hydrolysis causes the head to pivot and associate with a new actin subunit. The release of Pi causes the head to pivot and move the fila

Probab=92.02  E-value=0.42  Score=28.51  Aligned_cols=30  Identities=20%  Similarity=0.295  Sum_probs=26.7

Q ss_pred             CCCCEEEEECCCCCCCHHHHHHHHHHHHHC
Q ss_conf             889816631179898889999999999817
Q gi|254780217|r   31 GRMHHALLFEGEQGIGKATLGFRYAGHVLQ   60 (347)
Q Consensus        31 ~~l~ha~Lf~Gp~GiGK~~~A~~~A~~llc   60 (347)
T Consensus        83 ~~~~QsIiisGESGaGKTes~K~il~yL~~  112 (679)
T cd00124          83 DRRNQSIIISGESGAGKTENTKLIMKYLAS  112 (679)
T ss_pred             CCCCCEEEEECCCCCCHHHHHHHHHHHHHH
T ss_conf             399967999678988888999999999998