Deletions are lethal in the homozygous state because all copies of any essential genes located in the deleted region are missing.

TLS Online TPP Program

#Id: 7899

#Unit 2. Cellular Organization

Only 22 tRNAs are required for mitochondrial protein synthesis. The normal codon–anticodon pairing rules are relaxed in mitochondria, so that many tRNA molecules recognize any one of the four nucleotides in the third (wobble) position, allowing four codons to be recognized by a single tRNA.

TLS Online TPP Program

#Id: 1511

#Unit 2. Cellular Organization

Tubulin dimers in which the β-subunit has bound GTP are added preferentially to (+) end of the microtubule.

TLS Online TPP Program

#Id: 1372

#Unit 4. Cell Communication and Cell Signaling

STAT homodimer has two phosphotyrosine-SH2 domain interactions

TLS Online TPP Program

#Id: 5714

#Unit 7. System Physiology – Animal

Somatostatin binds membrane receptor, which is coupled to Galpha i protein.

TLS Online TPP Program

#Id: 7710

#Unit 1. Molecules and their Interaction Relevant to Biology