9.B.394. The Pentapeptide Repeat-containing Protein (PPRP) Family This family includes many proteins which have the PPR in a hydrophilic domain. Some of them have hydrophobic domains as well, but many do not. Therefore the PPR domain itself is not involved in transport, but some of these proteins may be. For example, the PPR domain may be present in other proteins in TCDB such as 1.A.1.29.3 and 9.B.65.1.9.
Examples:
TC#	Name	Organismal Type	Example
9.B.394.1.1	Pentapeptide repeat-containing protein (PPRP) of 1825 aas and 16 TMSs in a 4 + 4 + 4 + 4 TMS arrangement.		PPRP of Microcystis aeruginosa

9.B.394.1.2	Pentapeptide repeat-containing protein, PPRP, of 276 aas and 4 TMSs.		PPRP of Rubidibacter lacunae

9.B.394.1.3	Pentapeptide repeat-containing protein, PPRP. of 720 aas and 6 or 7 TMSs spaced closely together near the N-terminus of the protein.		PRPP of Leptolyngbyaceae cyanobacterium SL_5_9 (stromatolite metagenome)

9.B.394.1.4	Pentapeptide repeat-containing protein, PPRP, of 403 aas and 5 closely spaced TMSs near the N-terminus of the protein.		PRPP of Microcystis aeruginosa

9.B.394.1.5	Pentapeptide repeat-containing protein, PPRP, of 280 aas and 6 central TMSs.		PPRP of Allocoleopsis franciscana