An internalization motif is created in the cytoplasmic domain of the transferrin receptor by substitution of a tyrosine at the first position of a predicted tight turn.

Abstract excerpt

Receptors are internalized from the plasma membrane at approximately 10 times the rate of bulk membrane. The predominant model for the motif that promotes rapid internalization proposes a requirement for a tyrosine located in the first position of a tight turn. In this report we show that an internalization motif can be created de novo by substituting a tyrosine for the first or last residues of a tetrapeptide...

Topics

• Amino Acid Sequence
• Base Sequence
• Cytoplasm
• Endocytosis
• Humans
• Molecular Sequence Data
• Mutation
• Receptors, Transferrin
• Tyrosine