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Table 9 Phosphatases (mouse) that do not have an FXFP motif and/or D-domain sequence. Phosphatases that use phosphatidylinositols or inositols as substrates and do not contain an FXFP or D-domain sequence are listed in the table; all sequences are for mouse proteins. The number of potential MAPK phosphorylation sites and sequences fitting the optimal MAPK phosphorylation in these kinases are also identified.

From: Identification of mitogen-activated protein kinase docking sites in enzymes that metabolize phosphatidylinositols and inositol phosphates

Isozyme

GenBank Accession #

# amino acids

# (S/T)P sites

Site(s) with the consensus PX(S/T)P sequence

inositol monophosphatase A2

NP_444491

290

1

none

inositol monophosphatase A3

NP_808398

356

2

none

Inositol polyphosphate 1-phosphatase

P49442

396

2

none

Myotubularin; MTM1

Q9Z2C5

603

1

none

Myotubularin-related protein 2; MTMR2;

Q9Z2D1 (AAH63050)

643

4

none

Myotubularin-related protein 3; MTMR3

CAI35186

1159

7

582PSTP

Myotubularin-related protein 6; MTMR6

NP_659092

617

3

555PETP

Inositol polyphosphate 4-phosphatase, Type Ib (variant)

NP_766559

679

3

none

Inositol 1,4,5-trisphosphate 5-phosphatase, Type I

AAH56341

412

2

none

Synaptojanin 1 (synaptic inositol 1,4,5-trisphosphate 5-phosphatase 1)

Q8CHC4

1574

19

1145PPSP

1158PKSP

1443PNSP

PI(4,5)P2 5-phosphatase A; PIB5PA; PIPP

NP_766027

1003

31

197PQSP

200PSSP

346PRSP

Skeletal muscle and kidney enriched inositol phosphatase isoform 1; SKIP 1

Q8C5L6

468

5

none

Phospholipid-inositol phosphatase; PTEN-like phosphatase; PLIP

NP_079852

261

3

none