Riboflavin kinase; Riboflavin is converted into catalytically active cofactors (FAD and FMN) ...
156-279
1.63e-37
Riboflavin kinase; Riboflavin is converted into catalytically active cofactors (FAD and FMN) by the actions of riboflavin kinase, which converts it into FMN, and FAD synthetase, which adenylates FMN to FAD. Eukaryotes usually have two separate enzymes, while most prokaryotes have a single bifunctional protein that can carry out both catalyses, although exceptions occur in both cases. While eukaryotic monofunctional riboflavin kinase is orthologous to the bifunctional prokaryotic enzyme. the monofunctional FAD synthetase differs from its prokaryotic counterpart, and is instead related to the PAPS-reductase family. The bacterial FAD synthetase that is part of the bifunctional enzyme has remote similarity to nucleotidyl transferases and, hence, it may be involved in the adenylylation reaction of FAD synthetases. This entry represents riboflavin kinase, which occurs as part of a bifunctional enzyme or a stand-alone enzyme.
Pssm-ID: 214901 [Multi-domain] Cd Length: 124 Bit Score: 129.10 E-value: 1.63e-37
FAD synthetase, N-terminal domain of the bifunctional enzyme; FAD synthetase_N. N-terminal ...
14-170
1.18e-36
FAD synthetase, N-terminal domain of the bifunctional enzyme; FAD synthetase_N. N-terminal domain of the bifunctional riboflavin biosynthesis protein riboflavin kinase/FAD synthetase. These enzymes have both ATP:riboflavin 5'-phosphotransferase and ATP:FMN-adenylyltransferase activities. The N-terminal domain is believed to play a role in the adenylylation reaction of FAD synthetases. The C-terminal domain is thought to have kinase activity. FAD synthetase is present among all kingdoms of life. However, the bifunctional enzyme is not found in mammals, which use separate enzymes for FMN and FAD formation.
Pssm-ID: 185679 [Multi-domain] Cd Length: 180 Bit Score: 128.81 E-value: 1.18e-36
Riboflavin kinase; This family represents the C-terminal region of the bifunctional riboflavin ...
157-278
2.89e-34
Riboflavin kinase; This family represents the C-terminal region of the bifunctional riboflavin biosynthesis protein known as RibC in Bacillus subtilis. The RibC protein from Bacillus subtilis has both flavokinase and flavin adenine dinucleotide synthetase (FAD-synthetase) activities. RibC plays an essential role in the flavin metabolism. This domain is thought to have kinase activity.
Pssm-ID: 460295 [Multi-domain] Cd Length: 123 Bit Score: 120.56 E-value: 2.89e-34
Riboflavin kinase; Riboflavin is converted into catalytically active cofactors (FAD and FMN) ...
156-279
1.63e-37
Riboflavin kinase; Riboflavin is converted into catalytically active cofactors (FAD and FMN) by the actions of riboflavin kinase, which converts it into FMN, and FAD synthetase, which adenylates FMN to FAD. Eukaryotes usually have two separate enzymes, while most prokaryotes have a single bifunctional protein that can carry out both catalyses, although exceptions occur in both cases. While eukaryotic monofunctional riboflavin kinase is orthologous to the bifunctional prokaryotic enzyme. the monofunctional FAD synthetase differs from its prokaryotic counterpart, and is instead related to the PAPS-reductase family. The bacterial FAD synthetase that is part of the bifunctional enzyme has remote similarity to nucleotidyl transferases and, hence, it may be involved in the adenylylation reaction of FAD synthetases. This entry represents riboflavin kinase, which occurs as part of a bifunctional enzyme or a stand-alone enzyme.
Pssm-ID: 214901 [Multi-domain] Cd Length: 124 Bit Score: 129.10 E-value: 1.63e-37
FAD synthetase, N-terminal domain of the bifunctional enzyme; FAD synthetase_N. N-terminal ...
14-170
1.18e-36
FAD synthetase, N-terminal domain of the bifunctional enzyme; FAD synthetase_N. N-terminal domain of the bifunctional riboflavin biosynthesis protein riboflavin kinase/FAD synthetase. These enzymes have both ATP:riboflavin 5'-phosphotransferase and ATP:FMN-adenylyltransferase activities. The N-terminal domain is believed to play a role in the adenylylation reaction of FAD synthetases. The C-terminal domain is thought to have kinase activity. FAD synthetase is present among all kingdoms of life. However, the bifunctional enzyme is not found in mammals, which use separate enzymes for FMN and FAD formation.
Pssm-ID: 185679 [Multi-domain] Cd Length: 180 Bit Score: 128.81 E-value: 1.18e-36
Riboflavin kinase; This family represents the C-terminal region of the bifunctional riboflavin ...
157-278
2.89e-34
Riboflavin kinase; This family represents the C-terminal region of the bifunctional riboflavin biosynthesis protein known as RibC in Bacillus subtilis. The RibC protein from Bacillus subtilis has both flavokinase and flavin adenine dinucleotide synthetase (FAD-synthetase) activities. RibC plays an essential role in the flavin metabolism. This domain is thought to have kinase activity.
Pssm-ID: 460295 [Multi-domain] Cd Length: 123 Bit Score: 120.56 E-value: 2.89e-34
FAD synthetase; This family corresponds to the N terminal domain of the bifunctional enzyme ...
14-136
5.47e-17
FAD synthetase; This family corresponds to the N terminal domain of the bifunctional enzyme riboflavin kinase / FAD synthetase. These enzymes have both ATP:riboflavin 5'-phospho transferase and ATP:FMN-adenylyltransferase activity. They catalyze the 5'-phosphorylation of riboflavin to FMN and the adenylylation of FMN to FAD. This domain is thought to have the flavin mononucleotide (FMN) adenylyltransferase activity.
Pssm-ID: 429011 [Multi-domain] Cd Length: 158 Bit Score: 76.06 E-value: 5.47e-17
Cytidylyltransferase-like domain; Cytidylyltransferase-like domain. Many of these proteins are ...
16-142
8.12e-10
Cytidylyltransferase-like domain; Cytidylyltransferase-like domain. Many of these proteins are known to use CTP or ATP and release pyrophosphate. Protein families that contain at least one copy of this domain include citrate lyase ligase, pantoate-beta-alanine ligase, glycerol-3-phosphate cytidyltransferase, ADP-heptose synthase, phosphocholine cytidylyltransferase, lipopolysaccharide core biosynthesis protein KdtB, the bifunctional protein NadR, and a number whose function is unknown.
Pssm-ID: 185678 [Multi-domain] Cd Length: 143 Bit Score: 55.91 E-value: 8.12e-10
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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