The two β pleated sheets in each domain are held together by hydrophobic interactions and the conserved disulfide bond.  The three loops of each variable domain show considerable variation in length and amino acid sequence; these hyper variable regions  make up the antigen-binding site. 

TLS Online TPP Program

#Id: 1313

#Unit 4. Cell Communication and Cell Signaling

Two large classes of GTPase switch proteins-

Heterotrimeric G proteins

Monomeric G proteins

TLS Online TPP Program

#Id: 1585

#Unit 5. Developmental Biology

Ability to initiate a primitive streak is found throughout the marginal zone.

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#Id: 2107

#Unit 8. Inheritance Biology

Deletion of a number of pairs that is not evenly divisible by three will lead to a frameshift mutation.

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#Id: 7936

#Unit 2. Cellular Organization

The SRP is made up of six proteins bound to a 300-nucleotide RNA, which acts as a scaffold for the hexamer.

TLS Online TPP Program

#Id: 1021

#Unit 5. Developmental Biology

The vertebrate ectoderm, has 3 major responsibilities:

1. One part will become the neural plate

2. One part will become the epidermis

3. One part will become the neural crest