Exonuclease-Endonuclease-Phosphatase (EEP) domain superfamily; This large superfamily includes ...
10-301
0e+00
Exonuclease-Endonuclease-Phosphatase (EEP) domain superfamily; This large superfamily includes the catalytic domain (exonuclease/endonuclease/phosphatase or EEP domain) of a diverse set of proteins including the ExoIII family of apurinic/apyrimidinic (AP) endonucleases, inositol polyphosphate 5-phosphatases (INPP5), neutral sphingomyelinases (nSMases), deadenylases (such as the vertebrate circadian-clock regulated nocturnin), bacterial cytolethal distending toxin B (CdtB), deoxyribonuclease 1 (DNase1), the endonuclease domain of the non-LTR retrotransposon LINE-1, and related domains. These diverse enzymes share a common catalytic mechanism of cleaving phosphodiester bonds; their substrates range from nucleic acids to phospholipids and perhaps proteins.
The actual alignment was detected with superfamily member cd09092:
Pssm-ID: 469791 Cd Length: 383 Bit Score: 562.09 E-value: 0e+00
Type I inositol polyphosphate 5-phosphatase I; Type I inositol polyphosphate 5-phosphatase I ...
10-301
0e+00
Type I inositol polyphosphate 5-phosphatase I; Type I inositol polyphosphate 5-phosphatase I (INPP5A) hydrolyzes the 5-phosphate from inositol 1,3,4,5-tetrakisphosphate [I(1,3,4,5)P4] and inositol 1,4,5-trisphosphate [I(1,4,5)P3]. It belongs to a family of Mg2+-dependent inositol polyphosphate 5-phosphatases, which hydrolyze the 5-phosphate from the inositol ring of various 5-position phosphorylated phosphoinositides (PIs) and inositol phosphates (IPs), and to the large EEP (exonuclease/endonuclease/phosphatase) superfamily that contains functionally diverse enzymes that share a common catalytic mechanism of cleaving phosphodiester bonds. As the substrates of INPP5A mobilize intracellular calcium ions, INPP5A is a calcium signal-terminating enzyme. In platelets, phosphorylated pleckstrin binds and activates INPP5A in a 1:1 complex, and accelerates the degradation of the calcium ion-mobilizing I(1,4,5)P3.
Pssm-ID: 197326 Cd Length: 383 Bit Score: 562.09 E-value: 0e+00
Type I inositol polyphosphate 5-phosphatase I; Type I inositol polyphosphate 5-phosphatase I ...
10-301
0e+00
Type I inositol polyphosphate 5-phosphatase I; Type I inositol polyphosphate 5-phosphatase I (INPP5A) hydrolyzes the 5-phosphate from inositol 1,3,4,5-tetrakisphosphate [I(1,3,4,5)P4] and inositol 1,4,5-trisphosphate [I(1,4,5)P3]. It belongs to a family of Mg2+-dependent inositol polyphosphate 5-phosphatases, which hydrolyze the 5-phosphate from the inositol ring of various 5-position phosphorylated phosphoinositides (PIs) and inositol phosphates (IPs), and to the large EEP (exonuclease/endonuclease/phosphatase) superfamily that contains functionally diverse enzymes that share a common catalytic mechanism of cleaving phosphodiester bonds. As the substrates of INPP5A mobilize intracellular calcium ions, INPP5A is a calcium signal-terminating enzyme. In platelets, phosphorylated pleckstrin binds and activates INPP5A in a 1:1 complex, and accelerates the degradation of the calcium ion-mobilizing I(1,4,5)P3.
Pssm-ID: 197326 Cd Length: 383 Bit Score: 562.09 E-value: 0e+00
Catalytic domain of inositol polyphosphate 5-phosphatases; Inositol polyphosphate ...
10-252
1.68e-62
Catalytic domain of inositol polyphosphate 5-phosphatases; Inositol polyphosphate 5-phosphatases (5-phosphatases) are signal-modifying enzymes, which hydrolyze the 5-phosphate from the inositol ring of specific 5-position phosphorylated phosphoinositides (PIs) and inositol phosphates (IPs), such as PI(4,5)P2, PI(3,4,5)P3, PI(3,5)P2, I(1,4,5)P3, and I(1,3,4,5)P4. These enzymes are Mg2+-dependent, and belong to the large EEP (exonuclease/endonuclease/phosphatase) superfamily that contains functionally diverse enzymes that share a common catalytic mechanism of cleaving phosphodiester bonds. In addition to this INPP5c domain, 5-phosphatases often contain additional domains and motifs, such as the SH2 domain, the Sac-1 domain, the proline-rich domain (PRD), CAAX, RhoGAP (RhoGTPase-activating protein), and SKICH [SKIP (skeletal muscle- and kidney-enriched inositol phosphatase) carboxyl homology] domains, that are important for protein-protein interactions and/or for the subcellular localization of these enzymes. 5-phosphatases incorporate into large signaling complexes, and regulate diverse cellular processes including postsynaptic vesicular trafficking, insulin signaling, cell growth and survival, and endocytosis. Loss or gain of function of 5-phosphatases is implicated in certain human diseases. This family also contains a functionally unrelated nitric oxide transport protein, Cimex lectularius (bedbug) nitrophorin, which catalyzes a heme-assisted S-nitrosation of a proximal thiolate; the heme however binds at a site distinct from the active site of the 5-phosphatases.
Pssm-ID: 197308 [Multi-domain] Cd Length: 299 Bit Score: 199.87 E-value: 1.68e-62
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
of the residues that compose this conserved feature have been mapped to the query sequence.
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