selenium donor protein; In prokaryotes, the incorporation of selenocysteine as the 21st amino ...
19-333
9.70e-121
selenium donor protein; In prokaryotes, the incorporation of selenocysteine as the 21st amino acid, encoded by TGA, requires several elements: SelC is the tRNA itself, SelD acts as a donor of reduced selenium, SelA modifies a serine residue on SelC into selenocysteine, and SelB is a selenocysteine-specific translation elongation factor. 3-prime or 5-prime non-coding elements of mRNA have been found as probable structures for directing selenocysteine incorporation. This model describes SelD, known as selenophosphate synthetase, selenium donor protein, and selenide,water dikinase. SelD provides reduced selenium for the selenium transferase SelA. This protein itself contains selenocysteine in many species; any sequence scoring well but not aligning to the beginning of the model is likely to have a selenocysteine residue incorrectly interpreted as a stop codon upstream of the given sequence. The SelD protein also provides selenophosphate for the enzyme tRNA 2-selenouridine synthase, which catalyzes a tRNA base modification. It also contributes to selenium incorporation by selenium-dependent molybdenum hydroxylases (SDMH), in genomes with the marker TIGR03309. All genomes with SelD should make selenocysteine, selenouridine, SDMH, or some combination.
:
Pssm-ID: 273100 [Multi-domain] Cd Length: 301 Bit Score: 351.80 E-value: 9.70e-121
selenium donor protein; In prokaryotes, the incorporation of selenocysteine as the 21st amino ...
19-333
9.70e-121
selenium donor protein; In prokaryotes, the incorporation of selenocysteine as the 21st amino acid, encoded by TGA, requires several elements: SelC is the tRNA itself, SelD acts as a donor of reduced selenium, SelA modifies a serine residue on SelC into selenocysteine, and SelB is a selenocysteine-specific translation elongation factor. 3-prime or 5-prime non-coding elements of mRNA have been found as probable structures for directing selenocysteine incorporation. This model describes SelD, known as selenophosphate synthetase, selenium donor protein, and selenide,water dikinase. SelD provides reduced selenium for the selenium transferase SelA. This protein itself contains selenocysteine in many species; any sequence scoring well but not aligning to the beginning of the model is likely to have a selenocysteine residue incorrectly interpreted as a stop codon upstream of the given sequence. The SelD protein also provides selenophosphate for the enzyme tRNA 2-selenouridine synthase, which catalyzes a tRNA base modification. It also contributes to selenium incorporation by selenium-dependent molybdenum hydroxylases (SDMH), in genomes with the marker TIGR03309. All genomes with SelD should make selenocysteine, selenouridine, SDMH, or some combination.
Pssm-ID: 273100 [Multi-domain] Cd Length: 301 Bit Score: 351.80 E-value: 9.70e-121
Selenophosphate synthetase (SelD) catalyzes the conversion of selenium to selenophosphate ...
20-357
1.01e-119
Selenophosphate synthetase (SelD) catalyzes the conversion of selenium to selenophosphate which is required by a number of bacterial, archaeal and eukaryotic organisms for synthesis of Secys-tRNA, the precursor of selenocysteine in selenoenzymes. The N-terminal domain of SelD is related to the ATP-binding domains of hydrogen expression/formation protein HypE, the AIR synthases, and FGAM synthase and is thought to bind ATP.
Pssm-ID: 100031 [Multi-domain] Cd Length: 287 Bit Score: 348.74 E-value: 1.01e-119
AIR synthase related protein, C-terminal domain; This family includes Hydrogen expression ...
193-367
1.11e-18
AIR synthase related protein, C-terminal domain; This family includes Hydrogen expression/formation protein HypE, AIR synthases EC:6.3.3.1, FGAM synthase EC:6.3.5.3 and selenide, water dikinase EC:2.7.9.3. The function of the C-terminal domain of AIR synthase is unclear, but the cleft formed between N and C domains is postulated as a sulphate binding site.
Pssm-ID: 460684 [Multi-domain] Cd Length: 152 Bit Score: 82.01 E-value: 1.11e-18
selenium donor protein; In prokaryotes, the incorporation of selenocysteine as the 21st amino ...
19-333
9.70e-121
selenium donor protein; In prokaryotes, the incorporation of selenocysteine as the 21st amino acid, encoded by TGA, requires several elements: SelC is the tRNA itself, SelD acts as a donor of reduced selenium, SelA modifies a serine residue on SelC into selenocysteine, and SelB is a selenocysteine-specific translation elongation factor. 3-prime or 5-prime non-coding elements of mRNA have been found as probable structures for directing selenocysteine incorporation. This model describes SelD, known as selenophosphate synthetase, selenium donor protein, and selenide,water dikinase. SelD provides reduced selenium for the selenium transferase SelA. This protein itself contains selenocysteine in many species; any sequence scoring well but not aligning to the beginning of the model is likely to have a selenocysteine residue incorrectly interpreted as a stop codon upstream of the given sequence. The SelD protein also provides selenophosphate for the enzyme tRNA 2-selenouridine synthase, which catalyzes a tRNA base modification. It also contributes to selenium incorporation by selenium-dependent molybdenum hydroxylases (SDMH), in genomes with the marker TIGR03309. All genomes with SelD should make selenocysteine, selenouridine, SDMH, or some combination.
Pssm-ID: 273100 [Multi-domain] Cd Length: 301 Bit Score: 351.80 E-value: 9.70e-121
Selenophosphate synthetase (SelD) catalyzes the conversion of selenium to selenophosphate ...
20-357
1.01e-119
Selenophosphate synthetase (SelD) catalyzes the conversion of selenium to selenophosphate which is required by a number of bacterial, archaeal and eukaryotic organisms for synthesis of Secys-tRNA, the precursor of selenocysteine in selenoenzymes. The N-terminal domain of SelD is related to the ATP-binding domains of hydrogen expression/formation protein HypE, the AIR synthases, and FGAM synthase and is thought to bind ATP.
Pssm-ID: 100031 [Multi-domain] Cd Length: 287 Bit Score: 348.74 E-value: 1.01e-119
AIR synthase related protein, C-terminal domain; This family includes Hydrogen expression ...
193-367
1.11e-18
AIR synthase related protein, C-terminal domain; This family includes Hydrogen expression/formation protein HypE, AIR synthases EC:6.3.3.1, FGAM synthase EC:6.3.5.3 and selenide, water dikinase EC:2.7.9.3. The function of the C-terminal domain of AIR synthase is unclear, but the cleft formed between N and C domains is postulated as a sulphate binding site.
Pssm-ID: 460684 [Multi-domain] Cd Length: 152 Bit Score: 82.01 E-value: 1.11e-18
AIR synthase (PurM) related protein, subgroup 1 of unknown function. The family of PurM ...
32-355
1.10e-16
AIR synthase (PurM) related protein, subgroup 1 of unknown function. The family of PurM related proteins includes Hydrogen expression/formation protein HypE, AIR synthases, FGAM synthase and Selenophosphate synthetase (SelD). They all contain two conserved domains and seem to dimerize. The N-terminal domain forms the dimer interface and is a putative ATP binding domain.
Pssm-ID: 100037 [Multi-domain] Cd Length: 298 Bit Score: 79.95 E-value: 1.10e-16
thiamine-phosphate kinase; This model describes thiamine-monophosphate kinase, an enzyme that ...
64-267
4.77e-14
thiamine-phosphate kinase; This model describes thiamine-monophosphate kinase, an enzyme that converts thiamine monophosphate into thiamine pyrophosphate (TPP, coenzyme B1), an enzyme cofactor. Thiamine monophosphate may be derived from de novo synthesis or from unphosphorylated thiamine, known as vitamin B1. Proteins scoring between the trusted and noise cutoff for this model include short forms from the Thermoplasmas (which lack the N-terminal region) and a highly derived form from Campylobacter jejuni. Eukaryotes lack this enzyme, and add pyrophosphate from ATP to unphosphorylated thiamine in a single step. [Biosynthesis of cofactors, prosthetic groups, and carriers, Thiamine]
Pssm-ID: 273589 [Multi-domain] Cd Length: 317 Bit Score: 72.36 E-value: 4.77e-14
ThiL (Thiamine-monophosphate kinase) plays a dual role in de novo biosynthesis and in salvage ...
63-358
7.90e-14
ThiL (Thiamine-monophosphate kinase) plays a dual role in de novo biosynthesis and in salvage of exogenous thiamine. Thiamine salvage occurs in two steps, with thiamine kinase catalyzing the formation of thiamine phosphate, and ThiL catalyzing the conversion of this intermediate to thiamine pyrophosphate. The N-terminal domain of ThiL binds ATP and is related to the ATP-binding domains of hydrogen expression/formation protein HypE, the AIR synthases, FGAM synthase and selenophosphate synthetase (SelD).
Pssm-ID: 100030 [Multi-domain] Cd Length: 291 Bit Score: 71.43 E-value: 7.90e-14
Thiamine monophosphate kinase [Coenzyme transport and metabolism]; Thiamine monophosphate ...
64-361
9.04e-12
Thiamine monophosphate kinase [Coenzyme transport and metabolism]; Thiamine monophosphate kinase is part of the Pathway/BioSystem: Thiamine biosynthesis
Pssm-ID: 440376 [Multi-domain] Cd Length: 321 Bit Score: 65.55 E-value: 9.04e-12
AIR (aminoimidazole ribonucleotide) synthase related protein. This family includes Hydrogen ...
81-356
9.35e-12
AIR (aminoimidazole ribonucleotide) synthase related protein. This family includes Hydrogen expression/formation protein HypE, AIR synthases, FGAM (formylglycinamidine ribonucleotide) synthase and Selenophosphate synthetase (SelD). The N-terminal domain of AIR synthase forms the dimer interface of the protein, and is suggested as a putative ATP binding domain.
Pssm-ID: 100027 [Multi-domain] Cd Length: 222 Bit Score: 63.95 E-value: 9.35e-12
AIR synthase related protein, N-terminal domain; This family includes Hydrogen expression ...
82-177
2.14e-10
AIR synthase related protein, N-terminal domain; This family includes Hydrogen expression/formation protein HypE, AIR synthases EC:6.3.3.1, FGAM synthase EC:6.3.5.3 and selenide, water dikinase EC:2.7.9.3. The N-terminal domain of AIR synthase forms the dimer interface of the protein, and is suggested as a putative ATP binding domain.
Pssm-ID: 459859 [Multi-domain] Cd Length: 104 Bit Score: 57.07 E-value: 2.14e-10
AIR synthase (PurM) related protein, subgroup 3 of unknown function. The family of PurM ...
48-200
8.60e-04
AIR synthase (PurM) related protein, subgroup 3 of unknown function. The family of PurM related proteins includes Hydrogen expression/formation protein HypE, AIR synthases, FGAM synthase and Selenophosphate synthetase (SelD). They all contain two conserved domains and seem to dimerize. The N-terminal domain forms the dimer interface and is a putative ATP binding domain.
Pssm-ID: 100028 [Multi-domain] Cd Length: 283 Bit Score: 40.66 E-value: 8.60e-04
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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