pyruvate formate lyase 1-activating protein is a radical SAM protein that activates pyruvate formate-lyase 1 under anaerobic conditions by generation of an organic free radical, using S-adenosylmethionine and reduced flavodoxin as cosubstrates to produce 5'-deoxy-adenosine
pyruvate formate-lyase 1-activating enzyme; An iron-sulfur protein with a radical-SAM domain ...
6-240
2.08e-143
pyruvate formate-lyase 1-activating enzyme; An iron-sulfur protein with a radical-SAM domain (pfam04055). A single glycine residue in EC 2.3.1.54, formate C-acetyltransferase (formate-pyruvate lyase), is oxidized to the corresponding radical by transfer of H from its CH2 to AdoMet with concomitant cleavage of the latter. The reaction requires Fe2+. The first stage is reduction of the AdoMet to give methionine and the 5'-deoxyadenosin-5-yl radical, which then abstracts a hydrogen radical from the glycine residue. [Energy metabolism, Anaerobic, Protein fate, Protein modification and repair]
Pssm-ID: 131546 [Multi-domain] Cd Length: 235 Bit Score: 400.59 E-value: 2.08e-143
4Fe-4S single cluster domain; This family includes proteins containing domains which bind to ...
16-149
5.89e-20
4Fe-4S single cluster domain; This family includes proteins containing domains which bind to iron-sulfur clusters. Members include bacterial ferredoxins, various dehydrogenases, and various reductases. The structure of the domain is an alpha-antiparallel beta sandwich.
Pssm-ID: 433138 [Multi-domain] Cd Length: 137 Bit Score: 82.60 E-value: 5.89e-20
Radical SAM superfamily. Enzymes of this family generate radicals by combining a 4Fe-4S ...
24-203
6.56e-10
Radical SAM superfamily. Enzymes of this family generate radicals by combining a 4Fe-4S cluster and S-adenosylmethionine (SAM) in close proximity. They are characterized by a conserved CxxxCxxC motif, which coordinates the conserved iron-sulfur cluster. Mechanistically, they share the transfer of a single electron from the iron-sulfur cluster to SAM, which leads to its reductive cleavage to methionine and a 5'-deoxyadenosyl radical, which, in turn, abstracts a hydrogen from the appropriately positioned carbon atom. Depending on the enzyme, SAM is consumed during this process or it is restored and reused. Radical SAM enzymes catalyze steps in metabolism, DNA repair, the biosynthesis of vitamins and coenzymes, and the biosynthesis of many antibiotics. Examples are biotin synthase (BioB), lipoyl synthase (LipA), pyruvate formate-lyase (PFL), coproporphyrinogen oxidase (HemN), lysine 2,3-aminomutase (LAM), anaerobic ribonucleotide reductase (ARR), and MoaA, an enzyme of the biosynthesis of molybdopterin.
Pssm-ID: 100105 [Multi-domain] Cd Length: 204 Bit Score: 56.96 E-value: 6.56e-10
viperin family antiviral radical SAM protein; Homologs of a viral defense radical SAM enzyme ...
30-158
3.56e-06
viperin family antiviral radical SAM protein; Homologs of a viral defense radical SAM enzyme found in Homo sapiens, viperin (RSAD2), occur in prokaryotes with a strong bias toward placement in phage defense islands, encoded next to CRISPR system and restriction enzyme genes. Further investigation shows members indeed perform the anti-viral function of synthesizing modified ribonucleotides such as ddhCTP, ddh-guanosine triphosphate (ddhGTP) and ddh-uridine triphosphate (ddhUTP). Those non-standard ribonucleotides can interfere with viral replication machinery.
Pssm-ID: 468450 [Multi-domain] Cd Length: 280 Bit Score: 46.77 E-value: 3.56e-06
pyruvate formate-lyase 1-activating enzyme; An iron-sulfur protein with a radical-SAM domain ...
6-240
2.08e-143
pyruvate formate-lyase 1-activating enzyme; An iron-sulfur protein with a radical-SAM domain (pfam04055). A single glycine residue in EC 2.3.1.54, formate C-acetyltransferase (formate-pyruvate lyase), is oxidized to the corresponding radical by transfer of H from its CH2 to AdoMet with concomitant cleavage of the latter. The reaction requires Fe2+. The first stage is reduction of the AdoMet to give methionine and the 5'-deoxyadenosin-5-yl radical, which then abstracts a hydrogen radical from the glycine residue. [Energy metabolism, Anaerobic, Protein fate, Protein modification and repair]
Pssm-ID: 131546 [Multi-domain] Cd Length: 235 Bit Score: 400.59 E-value: 2.08e-143
glycyl-radical enzyme activating protein; This subset of the radical-SAM family (pfam04055) ...
17-241
3.54e-59
glycyl-radical enzyme activating protein; This subset of the radical-SAM family (pfam04055) includes a number of probable activating proteins acting on different enzymes all requiring an amino-acid-centered radical. The closest relatives to this family are the pyruvate-formate lyase activating enzyme (PflA, 1.97.1.4, TIGR02493) and the anaerobic ribonucleotide reductase activating enzyme (TIGR02491). Included within this subfamily are activators of hydroxyphenyl acetate decarboxylase (HdpA), benzylsuccinate synthase (BssD), gycerol dehydratase (DhaB2) as well as enzymes annotated in E. coli as activators of different isozymes of pyruvate-formate lyase (PFLC and PFLE) however, these appear to lack characterization and may activate enzymes with distinctive functions. Most of the sequence-level variability between these forms is concentrated within an N-terminal domain which follows a conserved group of three cysteines and contains a variable pattern of 0 to 8 additional cysteines.
Pssm-ID: 274163 [Multi-domain] Cd Length: 295 Bit Score: 189.08 E-value: 3.54e-59
glycine radical enzyme activase, YjjW family; Members of this family are radical SAM enzymes, ...
12-241
9.61e-45
glycine radical enzyme activase, YjjW family; Members of this family are radical SAM enzymes, designated YjjW in E. coli, that are paired with and appear to activate a glycyl radical enzyme of unknown function, designated YjjI. This activase and its target are found in Clostridial species as well as E. coli and cousins. Members of this family may be misannotated as pyruvate formate lyase activating enzyme. [Protein fate, Protein modification and repair]
Pssm-ID: 274938 [Multi-domain] Cd Length: 276 Bit Score: 151.25 E-value: 9.61e-45
4Fe-4S single cluster domain; This family includes proteins containing domains which bind to ...
16-149
5.89e-20
4Fe-4S single cluster domain; This family includes proteins containing domains which bind to iron-sulfur clusters. Members include bacterial ferredoxins, various dehydrogenases, and various reductases. The structure of the domain is an alpha-antiparallel beta sandwich.
Pssm-ID: 433138 [Multi-domain] Cd Length: 137 Bit Score: 82.60 E-value: 5.89e-20
Radical SAM superfamily; Radical SAM proteins catalyze diverse reactions, including unusual ...
29-178
1.37e-18
Radical SAM superfamily; Radical SAM proteins catalyze diverse reactions, including unusual methylations, isomerization, sulphur insertion, ring formation, anaerobic oxidation and protein radical formation.
Pssm-ID: 427681 [Multi-domain] Cd Length: 159 Bit Score: 79.88 E-value: 1.37e-18
anaerobic ribonucleoside-triphosphate reductase activating protein; This enzyme is a member of ...
6-179
3.52e-18
anaerobic ribonucleoside-triphosphate reductase activating protein; This enzyme is a member of the radical-SAM family (pfam04055). It is often gene clustered with the class III (anaerobic) ribonucleotide triphosphate reductase (NrdD, TIGR02487) and presumably fulfills the identical function as NrdG, which utilizes S-adenosyl methionine, an iron-sulfur cluster and a reductant (dihydroflavodoxin) to produce a glycine-centered radical in NrdD. [Purines, pyrimidines, nucleosides, and nucleotides, 2'-Deoxyribonucleotide metabolism, Protein fate, Protein modification and repair]
Pssm-ID: 274164 [Multi-domain] Cd Length: 192 Bit Score: 79.33 E-value: 3.52e-18
anaerobic ribonucleoside-triphosphate reductase activating protein; This enzyme is a member of ...
6-152
6.74e-17
anaerobic ribonucleoside-triphosphate reductase activating protein; This enzyme is a member of the radical-SAM family (pfam04055) and utilizes S-adenosyl methionine, an iron-sulfur cluster and a reductant (dihydroflavodoxin) to produce a glycine-centered radical in the class III (anaerobic) ribonucleotide triphosphate reductase (NrdD, TIGR02487). The two components form an alpha-2/beta-2 heterodimer. [Purines, pyrimidines, nucleosides, and nucleotides, 2'-Deoxyribonucleotide metabolism, Protein fate, Protein modification and repair]
Pssm-ID: 274161 [Multi-domain] Cd Length: 154 Bit Score: 75.08 E-value: 6.74e-17
Radical SAM superfamily. Enzymes of this family generate radicals by combining a 4Fe-4S ...
24-203
6.56e-10
Radical SAM superfamily. Enzymes of this family generate radicals by combining a 4Fe-4S cluster and S-adenosylmethionine (SAM) in close proximity. They are characterized by a conserved CxxxCxxC motif, which coordinates the conserved iron-sulfur cluster. Mechanistically, they share the transfer of a single electron from the iron-sulfur cluster to SAM, which leads to its reductive cleavage to methionine and a 5'-deoxyadenosyl radical, which, in turn, abstracts a hydrogen from the appropriately positioned carbon atom. Depending on the enzyme, SAM is consumed during this process or it is restored and reused. Radical SAM enzymes catalyze steps in metabolism, DNA repair, the biosynthesis of vitamins and coenzymes, and the biosynthesis of many antibiotics. Examples are biotin synthase (BioB), lipoyl synthase (LipA), pyruvate formate-lyase (PFL), coproporphyrinogen oxidase (HemN), lysine 2,3-aminomutase (LAM), anaerobic ribonucleotide reductase (ARR), and MoaA, an enzyme of the biosynthesis of molybdopterin.
Pssm-ID: 100105 [Multi-domain] Cd Length: 204 Bit Score: 56.96 E-value: 6.56e-10
Organic radical activating enzyme NrdG/QueE [Coenzyme transport and metabolism]; Organic ...
21-179
2.60e-09
Organic radical activating enzyme NrdG/QueE [Coenzyme transport and metabolism]; Organic radical activating enzyme NrdG/QueE is part of the Pathway/BioSystem: tRNA modification
Pssm-ID: 440367 [Multi-domain] Cd Length: 205 Bit Score: 55.53 E-value: 2.60e-09
Wyosine [tRNA(Phe)-imidazoG37] synthetase, radical SAM superfamily [Translation, ribosomal ...
30-244
1.31e-08
Wyosine [tRNA(Phe)-imidazoG37] synthetase, radical SAM superfamily [Translation, ribosomal structure and biogenesis]; Wyosine [tRNA(Phe)-imidazoG37] synthetase, radical SAM superfamily is part of the Pathway/BioSystem: tRNA modification
Pssm-ID: 440495 [Multi-domain] Cd Length: 248 Bit Score: 54.04 E-value: 1.31e-08
Radical SAM superfamily maturase, SkfB/NifB/PqqE family [Cell cycle control, cell division, ...
30-169
6.73e-07
Radical SAM superfamily maturase, SkfB/NifB/PqqE family [Cell cycle control, cell division, chromosome partitioning, Coenzyme transport and metabolism];
Pssm-ID: 440301 [Multi-domain] Cd Length: 159 Bit Score: 47.59 E-value: 6.73e-07
viperin family antiviral radical SAM protein; Homologs of a viral defense radical SAM enzyme ...
30-158
3.56e-06
viperin family antiviral radical SAM protein; Homologs of a viral defense radical SAM enzyme found in Homo sapiens, viperin (RSAD2), occur in prokaryotes with a strong bias toward placement in phage defense islands, encoded next to CRISPR system and restriction enzyme genes. Further investigation shows members indeed perform the anti-viral function of synthesizing modified ribonucleotides such as ddhCTP, ddh-guanosine triphosphate (ddhGTP) and ddh-uridine triphosphate (ddhUTP). Those non-standard ribonucleotides can interfere with viral replication machinery.
Pssm-ID: 468450 [Multi-domain] Cd Length: 280 Bit Score: 46.77 E-value: 3.56e-06
Sugar or nucleoside kinase, ribokinase family [Carbohydrate transport and metabolism]; Sugar ...
86-171
6.20e-03
Sugar or nucleoside kinase, ribokinase family [Carbohydrate transport and metabolism]; Sugar or nucleoside kinase, ribokinase family is part of the Pathway/BioSystem: Glycolysis
Pssm-ID: 440290 [Multi-domain] Cd Length: 301 Bit Score: 37.17 E-value: 6.20e-03
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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Functional characterization of the conserved domain architecture found on the query.
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if a domain or superfamily has been annotated with functional sites (conserved features),
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click on the bars or triangles to view your query sequence embedded in a multiple sequence alignment of the proteins used to develop the corresponding domain model.
The table lists conserved domains identified on the query sequence. Click on the plus sign (+) on the left to display full descriptions, alignments, and scores.
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To view your query sequence embedded in that multiple sequence alignment, click on the colored bars in the Graphical Summary portion of the search results page,
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Concise Display shows only the best scoring domain model, in each hit category listed below except non-specific hits, for each region on the query sequence.
(labeled illustration) Standard Display shows only the best scoring domain model from each source, in each hit category listed below for each region on the query sequence.
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(labeled illustration) Four types of hits can be shown, as available,
for each region on the query sequence:
specific hits meet or exceed a domain-specific e-value threshold
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and represent a very high confidence that the query sequence belongs to the same protein family as the sequences use to create the domain model
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