1) What are T-SNARES and V-SNARES? 2) Describe the roles of a signal sequence and of...

1) What are T-SNARES and V-SNARES?

2) Describe the roles of a signal sequence and of a stop-transfer sequence within a polypeptide.

Expert Solution

1)SNARES are large protein complex consisting of at least 24 membranes in yeasts and more than 60 membranes in mammalian cells.

Vesicle Or v-SNARES are incorporated into the membrane of transport vesicles during budding. t-SNARES is associated with nerve terminal membrane.

2) signal sequences are situated on the N- terminus of some proteins and enable those proteins to find their correct location outside the cell membrane. It tags the protein for transportation through the cell membrane and out of the cell.

Stop - transfer sequence prevents translocation of protein into a transfer vesicle and permits it's insertion into a membrane.

gladiator answered 2 years ago

-what are the roles of ribosome, ER signal sequence, Signal Recognition Particle, SRP receptor, translocation complex...

-what are the roles of ribosome, ER signal sequence, Signal Recognition Particle, SRP receptor, translocation complex in translation and movement of proteins into the endoplasmic reticulum?

What is the difference between a start-transfer sequence and a signal sequence What does a signal...

What is the difference between a start-transfer sequence and a signal sequence What does a signal peptidase do? What happens to a signal sequence after it’s cleaved? What does it mean when the translocator is gated in two directions?

Describe the key properties of a signal sequence (or leader sequence or leader peptide). Explain the...

Describe the key properties of a signal sequence (or leader sequence or leader peptide). Explain the roles of these properties in guiding proteins across the cytoplasmic membrane. .

what is an ER signal sequence and what function does it serve?

2. Let {Zt , t = 0, ±1, ±2, ...} be a sequence of independent random...

2. Let {Zt , t = 0, ±1, ±2, ...} be a sequence of independent random variables, each with mean EZt = 0 and variance Var(Zt) = σ 2 . Define Xt = ZtZt−1 + Zt−2. • Compute the mean and the covariance function for Xt . • Is {Xt} weakly stationary? Explain why.

A baseband signal s(t) = 10Cos(3000pit + 30) V, is wideband fm modulated (Z(t)) with carrier...

A baseband signal s(t) = 10Cos(3000*pi*t + 30) V, is wideband fm modulated (Z(t)) with carrier amplitude of 50V. The index of modulation is B = 4. a) Show the simplified equation of Z(t). b) Determine the wideband FM power using Bessel fnc. Table c) Calculate Kf in the Z(t) equation.

if the input signal is x(t)=exp[-at]u(t) and system impulse response is h(t)=u(t+2) what is the outpul...

if the input signal is x(t)=exp[-at]u(t) and system impulse response is h(t)=u(t+2) what is the outpul signal y(t) ?

1. m • (n • p) 2. (q ⊃ ~t) • (~m v q) 3. ~t...

1. m • (n • p) 2. (q ⊃ ~t) • (~m v q) 3. ~t ⊃ z : . z

Describe the source of the EMG signal and what the shape of the signal represents in...

Describe the source of the EMG signal and what the shape of the signal represents in the patient. How is the source of an EEG signal located on an individual? How does a cochlear implant allow a patient to hear different frequencies? What does an ECG measure? Can cardiac ablation be used to treat under-active cardiac tissue? Explain.

V = X'(t) = -t^2 + 6 m/s Implies X(t) = -(1/3)t^3 + 6t The initial...

V = X'(t) = -t^2 + 6 m/s Implies X(t) = -(1/3)*t^3 + 6*t The initial position is zero in this case. This function will initially increase (this means the object is moving forward), then the negative force will be too strong, so the object will start moving backwards. calculate the maxima and minima. Graph the function X(t). Describe the motion. Every detail.

Question