TLS Online TPP Program

#Question id: 1987


A nonfunctional CD4 protein on a helper T cell would result in the helper T cell being unable to

#Unit 4. Cell Communication and Cell Signaling
  1. respond to T-independent antigens.

  2. interact with a class II MHC-antigen complex.

  3. stimulate a cytotoxic T cell.

  4. interact with a class I MHC-antigen complex.

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TLS Online TPP Program

#Question id: 849

#Unit 1. Structure and Function of Biomolecules

The rigidity of the peptide unit and the restricted set of allowed phi and psi angles limits the number of structures accessible to the unfolded form sufficiently to allow:-

TLS Online TPP Program

#Question id: 850

#Unit 1. Structure and Function of Biomolecules

The experimental inverse of protein structure prediction, has provided insights into protein folding and stability. Protein design attempts to construct an amino acid sequence that will form a structure such as a sandwich of β sheets or a bundle of α helices;

TLS Online TPP Program

#Question id: 851

#Unit 1. Structure and Function of Biomolecules

Methods is the Rosetta program, formulated by David Baker. To satisfy the program’s computational needs, a volunteer network of ∼100,000 computers, known as Rosetta@home, provides the 500,000 or so hours of processing time required to generate a structure;

TLS Online TPP Program

#Question id: 852

#Unit 1. Structure and Function of Biomolecules

.________ enzyme revealed the relation between the amino acid sequence of a protein and its conformation.

TLS Online TPP Program

#Question id: 853

#Unit 1. Structure and Function of Biomolecules

In the presence of a large excess of _______ the disulfides (cystines) are fully converted into sulfhydryls (cysteines).

TLS Online TPP Program

#Question id: 854

#Unit 1. Structure and Function of Biomolecules

Many conditions including type 2 diabetes, Alzheimer  disease, Huntington disease and parkinson disease are associated with the misfolding mechanism a soluble protein that is normally secreted from the cell is secreted in the missfold state and converted into an insoluble extracellular fibre the diseases are correctly referred to as