Cytoskeleton and cell mechanics

Question 1

microtubule

Answer 1

protofilaments go round in a ring where each of them is made up of repetitive alpha and beta(binds GTP) tubular dimers

Question 2

crystal structure

Answer 2

fuel go to the top which is where alpha is and beta is plus end which gives polarity

Question 3

kinesin

Answer 3

moves towards plus end and dumps its content outside membrane by moving to plasma membrane

Question 4

dynein

Answer 4

moves to minus end

Question 5

b tubulin

Answer 5

binds ADP which swings head forward

Question 6

Dynein organelle transport

Answer 6

2 knees move rapidly retains attachment to microtubule as it delivers organelle in opposite direction to the nucleus of the cell

Question 7

hydrolisation

Answer 7

ATP binding force generating stroke pushes dynein then releasing from microtubule to bind the head back down to ADP then goes to minus head

Question 8

neurofilament

Answer 8

consists of obligate heterodimer which helps with support of axon and gilal cells