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CATH Superfamily 3.40.50.300

P-loop containing nucleotide triphosphate hydrolases

The name of this superfamily has been modified since the most recent official CATH+ release (v4_2_0). At the point of the last release, this superfamily was named:

"
P-loop containing nucleotide triphosphate hydrolases
".

Functional Families

Overview of the Structural Clusters (SC) and Functional Families within this CATH Superfamily. Clusters with a representative structure are represented by a filled circle.
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FunFam 635094: Large subunit GTPase 1

There are 9 EC terms in this cluster

Please note: EC annotations are assigned to the full protein sequence rather than individual protein domains. Since a given protein can contain multiple domains, it is possible that some of the annotations below come from additional domains that occur in the same protein, but have been classified elsewhere in CATH.

Note: The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.

EC Term Annotations Evidence
Heterotrimeric G-protein GTPase. [EC: 3.6.5.1]
GTP + H(2)O = GDP + phosphate.
  • This group comprises GTP-hydrolyzing systems, where GTP and GDP alternate in binding.
  • This group includes stimulatory and inhibitory G-proteins such as G(s), G(i), G(o) and G(olf), targeting adenylate cyclase and/or K(+) and Ca(2+) channels; G(q) stimulating phospholipase C; transducin activating cGMP phosphodiesterase; gustducin activating cAMP phosphodiesterase.
  • G(olf) is instrumental in odor perception, transducin in vision and gustducin in taste recognition.
  • At least 16 different alpha subunits (39-52 kDa), 5 beta subunits (36 kDa) and 12 gamma subunits (6-9 kDa) are known.
  • Formerly EC 3.6.1.46.
 35 A0A024V283 A0A024VZM8 A0A024WI65 A0A088RHN2 A0A088RZF9 A0A1A8W8B6 A0A1A8WEH3 A0A1C3KEV9 A0A1C3KEY5 A0A1C3KF94
(25 more...)
DNA-directed DNA polymerase. [EC: 2.7.7.7]
Deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1).
  • Catalyzes DNA-template-directed extension of the 3'-end of a DNA strand by one nucleotide at a time.
  • Cannot initiate a chain de novo.
  • Requires a primer which may be DNA or RNA.
  • See also EC 2.7.7.49.
 2 B0E5H9 G0R4K9
Aspartate transaminase. [EC: 2.6.1.1]
L-aspartate + 2-oxoglutarate = oxaloacetate + L-glutamate.
  • Also acts on L-tyrosine, L-phenylalanine and L-tryptophan.
  • This activity can be formed from EC 2.6.1.57 by controlled proteolysis.
 1 G0R4K9
Long-chain-alcohol O-fatty-acyltransferase. [EC: 2.3.1.75]
Acyl-CoA + a long-chain alcohol = CoA + a long-chain ester.
  • Transfers saturated or unsaturated acyl residues of chain-length C(18) to C(20) to long-chain alcohols, forming waxes.
  • The best acceptor is cis-icos-11-en-1-ol.
 1 G0R4K9
L-glutamate gamma-semialdehyde dehydrogenase. [EC: 1.2.1.88]
L-glutamate 5-semialdehyde + NAD(+) + H(2)O = L-glutamate + NADH.
  • This enzyme catalyzes the irreversible oxidation of glutamate-gamma- semialdehyde to glutamate as part of the proline degradation pathway.
  • (S)-1-pyrroline-5-carboxylate, the product of the first enzyme of the pathway (EC 1.5.5.2) is in spontaneous equilibrium with its tautomer L-glutamate gamma-semialdehyde.
  • In many bacterial species, both activities are carried out by a single bifunctional enzyme.
  • The enzyme can also oxidize other 1-pyrrolines, e.g. 3-hydroxy-1- pyrroline-5-carboxylate is converted into 4-hydroxyglutamate and (R)- 1-pyrroline-5-carboxylate is converted into D-glutamate.
  • NADP(+) can also act as acceptor, but with lower activity.
  • Formerly EC 1.5.1.12.
 1 A0A0L1HRW1
Nucleoside-triphosphate phosphatase. [EC: 3.6.1.15]
NTP + H(2)O = NDP + phosphate.
  • The enzyme is found in eukaryotes and thermophilic bacteria, but appears to be absent from mesophilic bacteria.
  • Also hydrolyzes nucleoside diphosphates, thiamine diphosphate and FAD.
  • The enzyme from the plant Pisum sativum (garden pea) is regulated by calmodulin.
 1 A0A170ZB67
Dual-specificity kinase. [EC: 2.7.12.1]
ATP + a protein = ADP + a phosphoprotein.
  • This family of enzymes can phosphorylate both Ser/Thr and Tyr residues.
  • Formerly EC 2.7.1.37.
 1 G0R4K9
Bothropasin. [EC: 3.4.24.49]
Cleavage of 5-His-|-Leu-6, 10-His-|-Leu-11, 14-Ala-|-Leu-15, 16-Tyr-|-Leu-17 and 24-Phe-|-Phe-25 in insulin B chain.
  • Caseinolytic endopeptidase of jararaca snake (Bothrops jararaca) venom.
  • Belongs to peptidase family M12B.
 1 G0R4K9
Tyrosine--tRNA ligase. [EC: 6.1.1.1]
ATP + L-tyrosine + tRNA(Tyr) = AMP + diphosphate + L-tyrosyl-tRNA(Tyr).
    		 1 V5F051
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