ArgK/MeaB family GTPase such as human mitochondrial methylmalonic aciduria type A protein, mycobacterial methylmalonyl Co-A mutase-associated GTPase MeaB, and Escherichia coli GTPase ArgK
methylmalonic aciduria associated protein; Methylmalonyl Co-A mutase-associated GTPase MeaB and its human homolog, methylmalonic aciduria associated protein (MMAA) are metallochaperones that function as a G-protein chaperone that assists AdoCbl cofactor delivery to the methylmalonyl-CoA mutase (MCM) and reactivation of the enzyme during catalysis. A member of the family, Escherichia coli ArgK, was previously thought to be a membrane ATPase which is required for transporting arginine, ornithine and lysine into the cells by the arginine and ornithine (AO system) and lysine, arginine and ornithine (LAO) transport systems.
Pssm-ID: 349768 Cd Length: 252 Bit Score: 424.29 E-value: 1.18e-149
Methylmalonyl Co-A mutase-associated GTPase MeaB; Family members were previously thought to be ...
98-380
4.76e-113
Methylmalonyl Co-A mutase-associated GTPase MeaB; Family members were previously thought to be ArgK proteins acting as ATPase enzymes and kinases. They are now believed to be methylmalonyl Co-A mutase-associated GTPase MeaB. Structural studies of MeaB and the human ortholog (methylmalonyl associated protein A) MMAA, reveal alpha-helical domains at the N- and C-termini as well as a Ras-like GTPase domain. Mutational analysis of MeaB, show prohibited growth in Methylobacterium due to the inability to convert methylmalonyl-CoA to succinyl-CoA caused by an inactive form of methylmalonyl-CoA mutatase (mcm). In humans, mutations in (MMAA) are associated with the fatal disease methylmalonyl aciduria.
Pssm-ID: 281323 [Multi-domain] Cd Length: 272 Bit Score: 332.09 E-value: 4.76e-113
LAO/AO transport system ATPase; In E. coli, mutation of this kinase blocks phosphorylation of ...
93-409
1.56e-111
LAO/AO transport system ATPase; In E. coli, mutation of this kinase blocks phosphorylation of two transporter system periplasmic binding proteins and consequently inhibits those transporters. This kinase is also found in Gram-positive bacteria, archaea, and the roundworm C. elegans. It may have a more general, but still unknown function. Mutations have also been found that do not phosphorylate the periplasmic binding proteins, yet still allow transport. The ATPase activity of this protein seems to be necessary, however. [Transport and binding proteins, Amino acids, peptides and amines, Regulatory functions, Protein interactions]
Pssm-ID: 129833 [Multi-domain] Cd Length: 300 Bit Score: 329.43 E-value: 1.56e-111
ATPases associated with a variety of cellular activities; AAA - ATPases associated with a ...
143-300
5.79e-03
ATPases associated with a variety of cellular activities; AAA - ATPases associated with a variety of cellular activities. This profile/alignment only detects a fraction of this vast family. The poorly conserved N-terminal helix is missing from the alignment.
Pssm-ID: 214640 [Multi-domain] Cd Length: 148 Bit Score: 37.35 E-value: 5.79e-03
methylmalonic aciduria associated protein; Methylmalonyl Co-A mutase-associated GTPase MeaB and its human homolog, methylmalonic aciduria associated protein (MMAA) are metallochaperones that function as a G-protein chaperone that assists AdoCbl cofactor delivery to the methylmalonyl-CoA mutase (MCM) and reactivation of the enzyme during catalysis. A member of the family, Escherichia coli ArgK, was previously thought to be a membrane ATPase which is required for transporting arginine, ornithine and lysine into the cells by the arginine and ornithine (AO system) and lysine, arginine and ornithine (LAO) transport systems.
Pssm-ID: 349768 Cd Length: 252 Bit Score: 424.29 E-value: 1.18e-149
Methylmalonyl Co-A mutase-associated GTPase MeaB; Family members were previously thought to be ...
98-380
4.76e-113
Methylmalonyl Co-A mutase-associated GTPase MeaB; Family members were previously thought to be ArgK proteins acting as ATPase enzymes and kinases. They are now believed to be methylmalonyl Co-A mutase-associated GTPase MeaB. Structural studies of MeaB and the human ortholog (methylmalonyl associated protein A) MMAA, reveal alpha-helical domains at the N- and C-termini as well as a Ras-like GTPase domain. Mutational analysis of MeaB, show prohibited growth in Methylobacterium due to the inability to convert methylmalonyl-CoA to succinyl-CoA caused by an inactive form of methylmalonyl-CoA mutatase (mcm). In humans, mutations in (MMAA) are associated with the fatal disease methylmalonyl aciduria.
Pssm-ID: 281323 [Multi-domain] Cd Length: 272 Bit Score: 332.09 E-value: 4.76e-113
LAO/AO transport system ATPase; In E. coli, mutation of this kinase blocks phosphorylation of ...
93-409
1.56e-111
LAO/AO transport system ATPase; In E. coli, mutation of this kinase blocks phosphorylation of two transporter system periplasmic binding proteins and consequently inhibits those transporters. This kinase is also found in Gram-positive bacteria, archaea, and the roundworm C. elegans. It may have a more general, but still unknown function. Mutations have also been found that do not phosphorylate the periplasmic binding proteins, yet still allow transport. The ATPase activity of this protein seems to be necessary, however. [Transport and binding proteins, Amino acids, peptides and amines, Regulatory functions, Protein interactions]
Pssm-ID: 129833 [Multi-domain] Cd Length: 300 Bit Score: 329.43 E-value: 1.56e-111
urease accessory protein UreG; UreG is one of the four accessory proteins of urease. Urease is ...
141-334
4.52e-06
urease accessory protein UreG; UreG is one of the four accessory proteins of urease. Urease is an enzyme which catalyzes the decomposition of urea to form ammonia and carbon dioxide. Bacterial urease is a trimer of three subunits which are encoded by genes ureA, ureB, and ureC. Up to four accessory proteins (ureD, ureE, ureF, and ureG) are required for urease catalytical function. UreG may play an important role in nickel incorporation of the urease metallocenter. UreG is a member of the Fer4_NifH superfamily which contains an ATP-binding domain. Proteins in this superfamily use the energy from hydrolysis of NTP to transfer electron or ion.
Pssm-ID: 349776 Cd Length: 191 Bit Score: 46.87 E-value: 4.52e-06
CobW/HypB/UreG, nucleotide-binding domain; This domain is found in HypB, a hydrogenase ...
143-320
8.78e-05
CobW/HypB/UreG, nucleotide-binding domain; This domain is found in HypB, a hydrogenase expression / formation protein, and UreG a urease accessory protein. Both these proteins contain a P-loop nucleotide binding motif. HypB has GTPase activity and is a guanine nucleotide binding protein. It is not known whether UreG binds GTP or some other nucleotide. Both enzymes are involved in nickel binding. HypB can store nickel and is required for nickel dependent hydrogenase expression. UreG is required for functional incorporation of the urease nickel metallocenter. GTP hydrolysis may required by these proteins for nickel incorporation into other nickel proteins. This family of domains also contains P47K, a Pseudomonas chlororaphis protein needed for nitrile hydratase expression, and the cobW gene product, which may be involved in cobalamin biosynthesis in Pseudomonas denitrificans.
Pssm-ID: 396860 Cd Length: 179 Bit Score: 43.01 E-value: 8.78e-05
ATPases associated with a variety of cellular activities; AAA - ATPases associated with a ...
143-300
5.79e-03
ATPases associated with a variety of cellular activities; AAA - ATPases associated with a variety of cellular activities. This profile/alignment only detects a fraction of this vast family. The poorly conserved N-terminal helix is missing from the alignment.
Pssm-ID: 214640 [Multi-domain] Cd Length: 148 Bit Score: 37.35 E-value: 5.79e-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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This image shows a graphical summary of conserved domains identified on the query sequence.
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if a domain or superfamily has been annotated with functional sites (conserved features),
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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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(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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