nucleotide-binding domain (NBD) of Arabidopsis thaliana apyrase 1 (AtAPY1), apyrase 2 (AtAPY2), and similar proteins; Apyrase (APY; EC 3.6.1.5), also called ATP-diphosphatase, ATP-diphosphohydrolase, adenosine diphosphatase, ADPase, NTPDase, or nucleoside triphosphate diphosphohydrolase, catalyzes the hydrolysis of phosphoanhydride bonds of nucleoside tri- and di-phosphates (NTPs and NDPs) in the presence of divalent cations. AtAPY1 and AtAPY2 are typical type II membrane proteins and function at the plasma membrane as ATPases and ADPases regulating ecto-ATP/ADP concentrations. They also act as endo-apyrases residing in the Golgi lumen with UDPase and GDPase activities. AtAPY1 and AtAPY2 play roles in the regulation of stomatal function by modulating extracellular ATP levels in guard cells. They work together to reduce extracellular ATP level which is essential for pollen germination and normal plant development.
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Pssm-ID: 466891 Cd Length: 399 Bit Score: 707.55 E-value: 0e+00
nucleotide-binding domain (NBD) of Arabidopsis thaliana apyrase 1 (AtAPY1), apyrase 2 (AtAPY2), and similar proteins; Apyrase (APY; EC 3.6.1.5), also called ATP-diphosphatase, ATP-diphosphohydrolase, adenosine diphosphatase, ADPase, NTPDase, or nucleoside triphosphate diphosphohydrolase, catalyzes the hydrolysis of phosphoanhydride bonds of nucleoside tri- and di-phosphates (NTPs and NDPs) in the presence of divalent cations. AtAPY1 and AtAPY2 are typical type II membrane proteins and function at the plasma membrane as ATPases and ADPases regulating ecto-ATP/ADP concentrations. They also act as endo-apyrases residing in the Golgi lumen with UDPase and GDPase activities. AtAPY1 and AtAPY2 play roles in the regulation of stomatal function by modulating extracellular ATP levels in guard cells. They work together to reduce extracellular ATP level which is essential for pollen germination and normal plant development.
Pssm-ID: 466891 Cd Length: 399 Bit Score: 707.55 E-value: 0e+00
nucleotide-binding domain (NBD) of Arabidopsis thaliana apyrase 1 (AtAPY1), apyrase 2 (AtAPY2), and similar proteins; Apyrase (APY; EC 3.6.1.5), also called ATP-diphosphatase, ATP-diphosphohydrolase, adenosine diphosphatase, ADPase, NTPDase, or nucleoside triphosphate diphosphohydrolase, catalyzes the hydrolysis of phosphoanhydride bonds of nucleoside tri- and di-phosphates (NTPs and NDPs) in the presence of divalent cations. AtAPY1 and AtAPY2 are typical type II membrane proteins and function at the plasma membrane as ATPases and ADPases regulating ecto-ATP/ADP concentrations. They also act as endo-apyrases residing in the Golgi lumen with UDPase and GDPase activities. AtAPY1 and AtAPY2 play roles in the regulation of stomatal function by modulating extracellular ATP levels in guard cells. They work together to reduce extracellular ATP level which is essential for pollen germination and normal plant development.
Pssm-ID: 466891 Cd Length: 399 Bit Score: 707.55 E-value: 0e+00
nucleotide-binding domain (NBD) of the ectonucleoside triphosphate diphosphohydrolase 5 ...
70-465
1.27e-117
nucleotide-binding domain (NBD) of the ectonucleoside triphosphate diphosphohydrolase 5 (NTPDase5)-like subfamily; The NTPDase5-like subfamily includes NTPDase5 and NTPDase6. NTPDase5 (EC 3.6.1.6), also called nucleoside diphosphate phosphatase ENTPD5, CD39 antigen-like 4 (CD39L4), ER-UDPase, guanosine-diphosphatase ENTPD5, GDPase ENTPD5, inosine diphosphate phosphatase ENTPD5, nucleoside diphosphatase, uridine-diphosphatase ENTPD5, or UDPase ENTPD5, hydrolyzes nucleoside diphosphates with a preference for GDP, IDP and UDP compared to ADP and CDP. NTPDase6 (EC 3.6.1.6), also called CD39 antigen-like 2 (CD39L2), catalyzes the hydrolysis of nucleoside triphosphates and diphosphates in a calcium- or magnesium-dependent manner. It has a strong preference for nucleoside diphosphates, preferentially hydrolyzes GDP, IDP, and UDP, with slower hydrolysis of CDP, ITP, GTP, CTP, ADP, and UTP and virtually no hydrolysis of ATP. The membrane bound form might support glycosylation reactions in the Golgi apparatus and, when released from cells, might catalyze the hydrolysis of extracellular nucleotides.
Pssm-ID: 466896 Cd Length: 372 Bit Score: 349.55 E-value: 1.27e-117
nucleotide-binding domain (NBD) of the GDA1/CD39 NTPase family; The GDA1/CD39 NTPase family ...
70-465
1.66e-93
nucleotide-binding domain (NBD) of the GDA1/CD39 NTPase family; The GDA1/CD39 NTPase family contains a group of apyrases (also known as adenylpyrophophatase, or ATP-diphosphohydrolases; EC 3.6.1.5), which are enzymes that catalyze the hydrolysis of phosphoanhydride bonds of nucleoside tri- and diphosphates (NTPs and NDPs) in the presence of divalent cations. In vertebrate systems, especially in mammals, apyrases are more widely referred to as nucleoside triphosphate diphosphohydrolases (NTPDases). There are eight homologs of NTPDases (NTPDases 1-8) in mammals, two apyrase enzymes from yeast, GDA1 and YND1, and a total of seven homologs of apyrase, namely AtAPY1-7, found in Arabidopsis. The GDA1/CD39 NTPase family belongs to the ASKHA (Acetate and Sugar Kinases/Hsc70/Actin) superfamily, all members of which share a common characteristic five-stranded beta sheet occurring in both the N- and C-terminal domains.
Pssm-ID: 466853 Cd Length: 332 Bit Score: 286.21 E-value: 1.66e-93
nucleotide-binding domain (NBD) of yeast guanosine-diphosphatase (GDA1) and similar proteins; ...
70-465
6.52e-87
nucleotide-binding domain (NBD) of yeast guanosine-diphosphatase (GDA1) and similar proteins; After transfer of sugars to endogenous macromolecular acceptors, GDA1 (EC 3.6.1.42), also called GDPase, converts nucleoside diphosphates to nucleoside monophosphates which in turn exit the Golgi lumen in a coupled antiporter reaction, allowing entry of additional nucleotide sugar from the cytosol.
Pssm-ID: 466890 Cd Length: 409 Bit Score: 271.90 E-value: 6.52e-87
nucleotide-binding domain (NBD) of ectonucleoside triphosphate diphosphohydrolase 5 (NTPDase5) ...
70-464
6.58e-74
nucleotide-binding domain (NBD) of ectonucleoside triphosphate diphosphohydrolase 5 (NTPDase5) and similar proteins; NTPDase5 (EC 3.6.1.6), also called nucleoside diphosphate phosphatase ENTPD5, CD39 antigen-like 4 (CD39L4), ER-UDPase, guanosine-diphosphatase ENTPD5, GDPase ENTPD5, inosine diphosphate phosphatase ENTPD5, nucleoside diphosphatase, uridine-diphosphatase ENTPD5, or UDPase ENTPD5, hydrolyzes nucleoside diphosphates with a preference for GDP, IDP and UDP compared to ADP and CDP.
Pssm-ID: 466964 Cd Length: 375 Bit Score: 237.40 E-value: 6.58e-74
nucleotide-binding domain (NBD) of ectonucleoside triphosphate diphosphohydrolase 6 (NTPDase6) ...
70-464
1.34e-69
nucleotide-binding domain (NBD) of ectonucleoside triphosphate diphosphohydrolase 6 (NTPDase6) and similar proteins; NTPDase6 (EC 3.6.1.6), also called CD39 antigen-like 2 (CD39L2), catalyzes the hydrolysis of nucleoside triphosphates and diphosphates in a calcium- or magnesium-dependent manner. It has a strong preference for nucleoside diphosphates, preferentially hydrolyzes GDP, IDP, and UDP, with slower hydrolysis of CDP, ITP, GTP, CTP, ADP, and UTP and virtually no hydrolysis of ATP. The membrane bound form might support glycosylation reactions in the Golgi apparatus and, when released from cells, might catalyze the hydrolysis of extracellular nucleotides.
Pssm-ID: 466965 Cd Length: 374 Bit Score: 226.23 E-value: 1.34e-69
nucleotide-binding domain (NBD) of Arabidopsis thaliana apyrases 3-6 (AtAPY3-6) and similar ...
70-465
5.52e-62
nucleotide-binding domain (NBD) of Arabidopsis thaliana apyrases 3-6 (AtAPY3-6) and similar proteins; Apyrase (APY; EC 3.6.1.5), also called ATP-diphosphatase, ATP-diphosphohydrolase, adenosine diphosphatase, ADPase, NTPDase, or nucleoside triphosphate diphosphohydrolase, catalyzes the hydrolysis of phosphoanhydride bonds of nucleoside tri- and di-phosphates (NTPs and NDPs). AtAPY3-5 exhibits a single putative N-terminal transmembrane domain typical of type II membrane proteins, whereas AtAPY6 appears to possess both an N- and a C- terminal transmembrane domain and to be type IV-A membrane protein. AtAPY5 exhibits the highest specific activities for NDPs of all the Arabidopsis apyrases. AtAPY4 may have the lowest NDPase activity, exhibiting a substrate preference for CTP. AtAPY6 plays an endo-apyrase role and is important in pollen exine formation.
Pssm-ID: 466892 Cd Length: 393 Bit Score: 206.91 E-value: 5.52e-62
nucleotide-binding domain (NBD) of the ectonucleoside triphosphate diphosphohydrolase 1 ...
70-467
1.06e-59
nucleotide-binding domain (NBD) of the ectonucleoside triphosphate diphosphohydrolase 1 (NTPDase1)-like subfamily; The NTPDase1-like subfamily includes NTPDases 1, 2, 3 and 8, which are localized to the cell surface with their catalytic domain facing the extracellular matrix. They are the ecto-apyrase group with NTPase activities. They participate in the regulation of purinergic signaling mediated by extracellular ATP and/or ADP (eATP and eADP) through the degradation of eATP and/or eADP into AMP.
Pssm-ID: 466894 Cd Length: 411 Bit Score: 201.35 E-value: 1.06e-59
nucleotide-binding domain (NBD) of Legionella pneumophila ectonucleoside triphosphate ...
69-465
2.87e-44
nucleotide-binding domain (NBD) of Legionella pneumophila ectonucleoside triphosphate diphosphohydrolase I (Lp1NTPDase/Lpg1905) and similar proteins; The family corresponds to a group of proteins similar to Lp1NTPDase, which is a structural and functional homolog of the eukaryotic nucleoside triphosphate diphosphohydrolases (NTPDases) that control the extracellular levels of nucleotides (NTPs). Lp1NTPDase contributes to host-pathogen interactions through its NTPDase activity. Unlike most of the mammalian NTPDases, Lp1NTPDase is soluble and does not require membrane association to regulate its catalytic activity.
Pssm-ID: 466888 Cd Length: 346 Bit Score: 158.66 E-value: 2.87e-44
nucleotide-binding domain (NBD) of ectonucleoside triphosphate diphosphohydrolase 2 (NTPDase2) ...
70-462
4.79e-38
nucleotide-binding domain (NBD) of ectonucleoside triphosphate diphosphohydrolase 2 (NTPDase2) and similar proteins; NTPDase2 (EC 3.6.1.-), also called CD39 antigen-like 1 (CD39L1), Ecto-ATP diphosphohydrolase 2 (ENTPD2), Ecto-ATPDase 2, or Ecto-ATPase 2, has E-type ecto-ATPase activity, by hydrolyzing extracellular ATP and other nucleotides to regulate purinergic neurotransmission in the nervous system. It hydrolyzes ADP only to a marginal extent.
Pssm-ID: 466961 Cd Length: 418 Bit Score: 143.35 E-value: 4.79e-38
nucleotide-binding domain (NBD) of the ectonucleoside triphosphate diphosphohydrolase 4 ...
69-278
1.06e-37
nucleotide-binding domain (NBD) of the ectonucleoside triphosphate diphosphohydrolase 4 (NTPDase4)-like subfamily; The NTPDase4-like subfamily includes NTPDase4 and NTPDase7. NTPDase4 (EC 3.6.1.15/EC 3.6.1.6/EC 3.6.1.42), also called Golgi UDPase, lysosomal apyrase-like protein of 70 kDa (LALP70), uridine-diphosphatase (UDPase), is located in the Golgi. It catalyzes the hydrolysis of nucleoside triphosphates and diphosphates in a calcium- or magnesium-dependent manner, with a preference for pyrimidines. It preferentially hydrolyzes UTP and TTP. NTPDase4 has at least one alternatively spliced variant, which has a broad substrate specificity with the ability of cleaving all nucleotide di- and triphosphates except for adenosine di- and triphosphate (ADP and ATP). It preferentially hydrolyzes CTP, UDP, CDP, GTP and GDP, and can use either calcium or magnesium equally. NTPDase7 (EC 3.6.1.15), also called lysosomal apyrase-like protein 1 (LALP1), is a novel mammalian endo-apyrase with substrate preference for nucleoside 5'-triphosphates UTP, GTP, and CTP.
Pssm-ID: 466895 Cd Length: 450 Bit Score: 143.22 E-value: 1.06e-37
nucleotide-binding domain (NBD) of ectonucleoside triphosphate diphosphohydrolase 8 (NTPDase8) ...
67-462
2.23e-37
nucleotide-binding domain (NBD) of ectonucleoside triphosphate diphosphohydrolase 8 (NTPDase8) and similar proteins; NTPDase8 (EC 3.6.1.5), also called E-NTPDase 8, or NTPDase 8, is a canalicular ectonucleoside NTPDase responsible for the main hepatic NTPDase activity. Ectonucleoside NTPDases catalyze the hydrolysis of gamma- and beta-phosphate residues of nucleotides, playing a central role in concentration of extracellular nucleotides. NTPDase8 has activity toward ATP, ADP, UTP and UDP, but not toward AMP.
Pssm-ID: 466963 Cd Length: 433 Bit Score: 141.82 E-value: 2.23e-37
nucleotide-binding domain (NBD) of Arabidopsis thaliana apyrase 7 (AtAPY7) and similar ...
70-465
1.45e-36
nucleotide-binding domain (NBD) of Arabidopsis thaliana apyrase 7 (AtAPY7) and similar proteins; Apyrase 7 (APY7; EC 3.6.1.5), also called ATP-diphosphatase, ATP-diphosphohydrolase, adenosine diphosphatase, ADPase, NTPDase, or nucleoside triphosphate diphosphohydrolase 7, catalyzes the hydrolysis of phosphoanhydride bonds of nucleoside tri- and di-phosphates (NTPs and NDPs). AtAPY7 has been classified as a type IV-A membrane protein. It is important in pollen exine formation. AtAPY7 does not appear to function as a typical apyrase.
Pssm-ID: 466893 Cd Length: 418 Bit Score: 139.51 E-value: 1.45e-36
nucleotide-binding domain (NBD) of ectonucleoside triphosphate diphosphohydrolase 1 (NTPDase1) ...
67-462
8.56e-35
nucleotide-binding domain (NBD) of ectonucleoside triphosphate diphosphohydrolase 1 (NTPDase1) and similar proteins; NTPDase1 (EC 3.6.1.5), also called Ecto-ATP diphosphohydrolase 1, Ecto-ATPDase 1, Ecto-ATPase 1, Ecto-apyrase, or lymphoid cell activation antigen CD39, is a known E-type apyrase that could hydrolyze ATP and other nucleotides to regulate purinergic neurotransmission in the nervous system. It could also be implicated in the prevention of platelet aggregation by hydrolyzing platelet-activating ADP to AMP. NTPDase1 hydrolyzes ATP and ADP equally well. In addition, NTPDase1 can also hydrolyze ATP to AMP without the release of ADP.
Pssm-ID: 466960 Cd Length: 422 Bit Score: 134.53 E-value: 8.56e-35
nucleotide-binding domain (NBD) of yeast nucleoside diphosphatase 1 (YND1) and similar ...
69-278
9.26e-35
nucleotide-binding domain (NBD) of yeast nucleoside diphosphatase 1 (YND1) and similar proteins; YND1 (EC 3.6.1.5), also called Golgi apyrase, ATP-diphosphatase, ATP-diphosphohydrolase, adenosine diphosphatase, ADPase, or Golgi nucleoside diphosphatase, catalyzes the hydrolysis of phosphoanhydride bonds of nucleoside tri- and di-phosphates. YND1 is required for Golgi glycosylation and cell wall integrity.
Pssm-ID: 466889 Cd Length: 373 Bit Score: 133.25 E-value: 9.26e-35
nucleotide-binding domain (NBD) of ectonucleoside triphosphate diphosphohydrolase 3 (NTPDase3) ...
70-297
3.79e-27
nucleotide-binding domain (NBD) of ectonucleoside triphosphate diphosphohydrolase 3 (NTPDase3) and similar proteins; NTPDase3 (EC 3.6.1.5), also called CD39 antigen-like 3 (CD39L3), Ecto-ATP diphosphohydrolase 3, Ecto-ATPDase 3, Ecto-ATPase 3, Ecto-apyrase 3, or HB6, has a threefold preference for the hydrolysis of ATP over ADP.
Pssm-ID: 466962 Cd Length: 411 Bit Score: 112.55 E-value: 3.79e-27
nucleotide-binding domain (NBD) of Toxoplasma gondii nucleoside triphosphate hydrolase (NTPase) isoforms and similar proteins; The family corresponds a group of proteins similar to Toxoplasma gondii nucleoside triphosphate hydrolase (NTPase) isoforms, NTPase-I and NTPase-II. NTPase (EC 3.6.1.15), also called nucleoside-triphosphatase, may perform an important processing step in the conversion of high energy nucleotides prior to uptake by the parasite and may contribute to intracellular survival and virulence. NTPAse-I has a specific activity 4.5-fold higher than NTPAse-II in hydrolysis of ATP. The primary difference between these isozymes lies in their ability to hydrolyze nucleoside triphosphate versus diphosphate substrates. While NTPAse-II hydrolyzes ATP to ADP and ADP to AMP at almost the same rate, NTPAse-I hydrolyzes ADP to AMP at a much slower rate (0.7% of the rate for ATP).
Pssm-ID: 466887 Cd Length: 565 Bit Score: 46.01 E-value: 4.53e-05
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.
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