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Rabosyn-5 repeating NPF sequence-motif NPF is a natively unstructured but well-conserved region found in eukaryotic proteins of the Rabenosyn-5 type, wherein the sequence motif arginine-proline-phenylalanine followed by several glutamates and aspartates is repeated up to four times along the sequence. NPF lies between the two Rab-binding domains, for Rab-4 and Rab-5, at the C-terminal end of these proteins. Rabosyn-5 (or rabenosyn) is also involved in cell-polarity determination in developing wing epithelia of Drosophila, when the NPF-motif may be implicated. These NPF motifs create a region of strong positive surface potential which appear to bind Eps15 homology, EH or EF-hand, domains on proteins involved in vesicle trafficking. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",