>cd01377 MYSc_type_II Myosin motor domain, type II myosins. Myosin II mediates cortical contraction in cell motility, and is the motor in smooth and skeletal muscle. 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 hydro

Probab=92.57  E-value=0.13  Score=31.06  Aligned_cols=23  Identities=30%  Similarity=0.452  Sum_probs=19.2

Q ss_pred             CCCEEEEEECCCCCHHHHHHHHH
Q ss_conf             43204887327774367999999
Q gi|254780916|r  161 DCAIPIMIQGEFGVGKKRLSRFI  183 (482)
Q Consensus       161 ~~~~~vli~Ge~GtGK~~~A~~i  183 (482)
T Consensus        89 ~~~QsIiiSGESGAGKTes~K~i  111 (693)
T cd01377          89 RENQSILITGESGAGKTENTKKV  111 (693)
T ss_pred             CCCCEEEEECCCCCCHHHHHHHH
T ss_conf             99806999688988889999999