P-loop NTPase (nucleoside triphosphate hydrolase) family protein contains two conserved sequence signatures, the Walker A motif (the P-loop proper) and Walker B motif which bind, respectively, the beta and gamma phosphate moieties of the bound nucleotide (typically ATP or GTP), and a Mg(2+) cation
P-loop containing Nucleoside Triphosphate Hydrolases; Members of the P-loop NTPase domain ...
108-265
3.90e-30
P-loop containing Nucleoside Triphosphate Hydrolases; Members of the P-loop NTPase domain superfamily are characterized by a conserved nucleotide phosphate-binding motif, also referred to as the Walker A motif (GxxxxGK[S/T], where x is any residue), and the Walker B motif (hhhh[D/E], where h is a hydrophobic residue). The Walker A and B motifs bind the beta-gamma phosphate moiety of the bound nucleotide (typically ATP or GTP) and the Mg2+ cation, respectively. The P-loop NTPases are involved in diverse cellular functions, and they can be divided into two major structural classes: the KG (kinase-GTPase) class which includes Ras-like GTPases and its circularly permutated YlqF-like; and the ASCE (additional strand catalytic E) class which includes ATPase Binding Cassette (ABC), DExD/H-like helicases, 4Fe-4S iron sulfur cluster binding proteins of NifH family, RecA-like F1-ATPases, and ATPases Associated with a wide variety of Activities (AAA). Also included are a diverse set of nucleotide/nucleoside kinase families.
The actual alignment was detected with superfamily member cd01129:
Pssm-ID: 476819 [Multi-domain] Cd Length: 159 Bit Score: 112.19 E-value: 3.90e-30
PulE-GspE family; PulE and General secretory pathway protein GspE are ATPases of the type II ...
108-265
3.90e-30
PulE-GspE family; PulE and General secretory pathway protein GspE are ATPases of the type II secretory pathway, the main terminal branch of the general secretory pathway (GSP). PulE is a cytoplasmic protein of the GSP, which contains an ATP binding site and a tetracysteine motif. This subgroup also includes PilB, a type IV pilus assembly ATPase, DotB, an ATPase of the type IVb secretion system, also known as the dot/icm system, Escherichia coli IncI plasmid-encoded conjugative transfer ATPase TraJ, and HofB.
Pssm-ID: 410873 [Multi-domain] Cd Length: 159 Bit Score: 112.19 E-value: 3.90e-30
Type II/IV secretion system protein; This family contains components of both the Type II ...
114-260
5.27e-20
Type II/IV secretion system protein; This family contains components of both the Type II protein secretion system (T2SS), including Type 4 pilus (T4P), and Type IV protein secretion system (T4SS) from Gram-negative bacteria. VirB11 ATPase is a subunit of the Agrobacterium tumefaciens transfer DNA (T-DNA) transfer system, a type IV secretion pathway required for delivery of T-DNA and effector proteins to plant cells during infection. The cytoplasmic T2S E ATPase is a Zn-containing protein thought to provide the mechanical force for the secretion process. T2S-E contains Walker A and B motifs, that are essential for secretion and ATPase activity. ATPase PulE and XcpR from Klebsiella oxytoca and Pseudomonas aeruginosa respectively are required for protein secretion via the T2SS. ATPase PilB is required for T4P extension.
Pssm-ID: 425681 [Multi-domain] Cd Length: 269 Bit Score: 87.73 E-value: 5.27e-20
PulE-GspE family; PulE and General secretory pathway protein GspE are ATPases of the type II ...
108-265
3.90e-30
PulE-GspE family; PulE and General secretory pathway protein GspE are ATPases of the type II secretory pathway, the main terminal branch of the general secretory pathway (GSP). PulE is a cytoplasmic protein of the GSP, which contains an ATP binding site and a tetracysteine motif. This subgroup also includes PilB, a type IV pilus assembly ATPase, DotB, an ATPase of the type IVb secretion system, also known as the dot/icm system, Escherichia coli IncI plasmid-encoded conjugative transfer ATPase TraJ, and HofB.
Pssm-ID: 410873 [Multi-domain] Cd Length: 159 Bit Score: 112.19 E-value: 3.90e-30
Pilus retraction ATPase PilT; Pilus retraction ATPase PilT is a nucleotide-binding protein ...
92-315
1.90e-24
Pilus retraction ATPase PilT; Pilus retraction ATPase PilT is a nucleotide-binding protein responsible for the retraction of type IV pili, likely by pili disassembly. This retraction provides the force required for travel of bacteria in low water environments by a mechanism known as twitching motility.
Pssm-ID: 410875 [Multi-domain] Cd Length: 223 Bit Score: 98.76 E-value: 1.90e-24
dot/icm secretion system protein DotB-like; Defect in organelle trafficking (Dot)B is part of ...
108-263
8.51e-24
dot/icm secretion system protein DotB-like; Defect in organelle trafficking (Dot)B is part of the type IVb secretion (T4bS) system, also known as the dot/icm system, and is the main energy supplier of the secretion system. It is an ATPase, similar to the VirB11 component of the T4aS systems. This family also includes Escherichia coli IncI plasmid-encoded conjugative transfer ATPase TraJ encoded on the tra (transfer) operon.
Pssm-ID: 410924 [Multi-domain] Cd Length: 179 Bit Score: 95.91 E-value: 8.51e-24
Type II/IV secretion system protein; This family contains components of both the Type II ...
114-260
5.27e-20
Type II/IV secretion system protein; This family contains components of both the Type II protein secretion system (T2SS), including Type 4 pilus (T4P), and Type IV protein secretion system (T4SS) from Gram-negative bacteria. VirB11 ATPase is a subunit of the Agrobacterium tumefaciens transfer DNA (T-DNA) transfer system, a type IV secretion pathway required for delivery of T-DNA and effector proteins to plant cells during infection. The cytoplasmic T2S E ATPase is a Zn-containing protein thought to provide the mechanical force for the secretion process. T2S-E contains Walker A and B motifs, that are essential for secretion and ATPase activity. ATPase PulE and XcpR from Klebsiella oxytoca and Pseudomonas aeruginosa respectively are required for protein secretion via the T2SS. ATPase PilB is required for T4P extension.
Pssm-ID: 425681 [Multi-domain] Cd Length: 269 Bit Score: 87.73 E-value: 5.27e-20
type II/type IV hexameric secretion ATPases; RecA-like NTPases. This family includes the NTP ...
115-260
1.47e-09
type II/type IV hexameric secretion ATPases; RecA-like NTPases. This family includes the NTP binding domain of F1 and V1 H(+)ATPases, DnaB and related helicases as well as bacterial RecA and related eukaryotic and archaeal recombinases. This group also includes bacterial conjugation proteins and related DNA transfer proteins involved in type II and type IV secretion.
Pssm-ID: 410885 [Multi-domain] Cd Length: 168 Bit Score: 56.25 E-value: 1.47e-09
Type IV secretory pathway component VirB11-like; Type IV secretory pathway component VirB11, ...
117-262
8.99e-09
Type IV secretory pathway component VirB11-like; Type IV secretory pathway component VirB11, and related ATPases. The homohexamer, VirB11 is one of eleven Vir (virulence) proteins, which are required for T-pilus biogenesis and virulence in the transfer of T-DNA from the bacterial Ti (tumor-inducing)-plasmid into plant cells. The pilus is a fibrous cell surface organelle, which mediates adhesion between bacteria during conjugative transfer or between bacteria and host eukaryotic cells during infection. VirB11-related ATPases include Sulfolobus acidocaldarius FlaI, which plays key roles in archaellum (archaeal flagellum) assembly and motility functions, and the pilus assembly proteins CpaF/TadA and TrbB. This alignment contains the C-terminal domain, which is the ATPase.
Pssm-ID: 410874 [Multi-domain] Cd Length: 177 Bit Score: 54.08 E-value: 8.99e-09
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.
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