type 2 periplasmic-binding domain-containing protein; phosphate ABC transporter substrate-binding/OmpA family protein( domain architecture ID 10194212)
type 2 periplasmic-binding protein (PBP2) is typically comprised of two globular subdomains connected by a flexible hinge; it binds its ligand in the cleft between these domains in a manner resembling a Venus flytrap; similar to the ligand-binding domains found in solute binding proteins that serve as initial receptors in the transport, signal transduction and channel gating| fused phosphate ABC transporter substrate-binding protein/OmpA family membrane protein contains an N-terminal domain similar to Bacillus subtilis phosphate-binding protein PstS, part of the ABC transporter complex PstSACB that is involved in phosphate import, and a C-terminal domain that may act as a porin with low permeability that allows slow penetration of small solutes
Transferrin family of the type 2 periplasmic-binding protein superfamily; Transferrins are ...
369-681
4.24e-81
Transferrin family of the type 2 periplasmic-binding protein superfamily; Transferrins are iron-binding blood plasma glycoproteins that regulate the level of free iron in biological fluids. Vertebrate transferrins are made of a single polypeptide chain with a molecular weight of about 80 kDa. The polypeptide is folded into two homologous lobes (the N-lobe and C-lobe), and each lobe is further subdivided into two similar alpha helical and beta sheet domains separated by a deep cleft that forms the binding site for ferric iron. Thus, the transferrin protein contains two homologous metal-binding sites with high affinities for ferric iron. The modern transferrin proteins are thought to be evolved from an ancestral gene coding for a protein of 40 kDa containing a single binding site by means of a gene duplication event. Vertebrate transferrins are found in a variety of bodily fluids, including serum transferrins, ovotransferrins, lactoferrins, and melanotransferrins. Transferrin-like proteins are also found in the circulatory fluid of certain invertebrates. The transferrins have the same structural fold as the type 2 periplasmic-binding proteins, many of which are involved in chemotaxis and uptake of nutrients and other small molecules from the extracellular space as a primary receptor.
:
Pssm-ID: 270247 Cd Length: 298 Bit Score: 260.03 E-value: 4.24e-81
Transferrin family of the type 2 periplasmic-binding protein superfamily; Transferrins are ...
33-368
8.56e-70
Transferrin family of the type 2 periplasmic-binding protein superfamily; Transferrins are iron-binding blood plasma glycoproteins that regulate the level of free iron in biological fluids. Vertebrate transferrins are made of a single polypeptide chain with a molecular weight of about 80 kDa. The polypeptide is folded into two homologous lobes (the N-lobe and C-lobe), and each lobe is further subdivided into two similar alpha helical and beta sheet domains separated by a deep cleft that forms the binding site for ferric iron. Thus, the transferrin protein contains two homologous metal-binding sites with high affinities for ferric iron. The modern transferrin proteins are thought to be evolved from an ancestral gene coding for a protein of 40 kDa containing a single binding site by means of a gene duplication event. Vertebrate transferrins are found in a variety of bodily fluids, including serum transferrins, ovotransferrins, lactoferrins, and melanotransferrins. Transferrin-like proteins are also found in the circulatory fluid of certain invertebrates. The transferrins have the same structural fold as the type 2 periplasmic-binding proteins, many of which are involved in chemotaxis and uptake of nutrients and other small molecules from the extracellular space as a primary receptor.
:
Pssm-ID: 270247 Cd Length: 298 Bit Score: 230.37 E-value: 8.56e-70
Transferrin family of the type 2 periplasmic-binding protein superfamily; Transferrins are ...
369-681
4.24e-81
Transferrin family of the type 2 periplasmic-binding protein superfamily; Transferrins are iron-binding blood plasma glycoproteins that regulate the level of free iron in biological fluids. Vertebrate transferrins are made of a single polypeptide chain with a molecular weight of about 80 kDa. The polypeptide is folded into two homologous lobes (the N-lobe and C-lobe), and each lobe is further subdivided into two similar alpha helical and beta sheet domains separated by a deep cleft that forms the binding site for ferric iron. Thus, the transferrin protein contains two homologous metal-binding sites with high affinities for ferric iron. The modern transferrin proteins are thought to be evolved from an ancestral gene coding for a protein of 40 kDa containing a single binding site by means of a gene duplication event. Vertebrate transferrins are found in a variety of bodily fluids, including serum transferrins, ovotransferrins, lactoferrins, and melanotransferrins. Transferrin-like proteins are also found in the circulatory fluid of certain invertebrates. The transferrins have the same structural fold as the type 2 periplasmic-binding proteins, many of which are involved in chemotaxis and uptake of nutrients and other small molecules from the extracellular space as a primary receptor.
Pssm-ID: 270247 Cd Length: 298 Bit Score: 260.03 E-value: 4.24e-81
Transferrin family of the type 2 periplasmic-binding protein superfamily; Transferrins are ...
33-368
8.56e-70
Transferrin family of the type 2 periplasmic-binding protein superfamily; Transferrins are iron-binding blood plasma glycoproteins that regulate the level of free iron in biological fluids. Vertebrate transferrins are made of a single polypeptide chain with a molecular weight of about 80 kDa. The polypeptide is folded into two homologous lobes (the N-lobe and C-lobe), and each lobe is further subdivided into two similar alpha helical and beta sheet domains separated by a deep cleft that forms the binding site for ferric iron. Thus, the transferrin protein contains two homologous metal-binding sites with high affinities for ferric iron. The modern transferrin proteins are thought to be evolved from an ancestral gene coding for a protein of 40 kDa containing a single binding site by means of a gene duplication event. Vertebrate transferrins are found in a variety of bodily fluids, including serum transferrins, ovotransferrins, lactoferrins, and melanotransferrins. Transferrin-like proteins are also found in the circulatory fluid of certain invertebrates. The transferrins have the same structural fold as the type 2 periplasmic-binding proteins, many of which are involved in chemotaxis and uptake of nutrients and other small molecules from the extracellular space as a primary receptor.
Pssm-ID: 270247 Cd Length: 298 Bit Score: 230.37 E-value: 8.56e-70
Transferrin family of the type 2 periplasmic-binding protein superfamily; Transferrins are ...
369-681
4.24e-81
Transferrin family of the type 2 periplasmic-binding protein superfamily; Transferrins are iron-binding blood plasma glycoproteins that regulate the level of free iron in biological fluids. Vertebrate transferrins are made of a single polypeptide chain with a molecular weight of about 80 kDa. The polypeptide is folded into two homologous lobes (the N-lobe and C-lobe), and each lobe is further subdivided into two similar alpha helical and beta sheet domains separated by a deep cleft that forms the binding site for ferric iron. Thus, the transferrin protein contains two homologous metal-binding sites with high affinities for ferric iron. The modern transferrin proteins are thought to be evolved from an ancestral gene coding for a protein of 40 kDa containing a single binding site by means of a gene duplication event. Vertebrate transferrins are found in a variety of bodily fluids, including serum transferrins, ovotransferrins, lactoferrins, and melanotransferrins. Transferrin-like proteins are also found in the circulatory fluid of certain invertebrates. The transferrins have the same structural fold as the type 2 periplasmic-binding proteins, many of which are involved in chemotaxis and uptake of nutrients and other small molecules from the extracellular space as a primary receptor.
Pssm-ID: 270247 Cd Length: 298 Bit Score: 260.03 E-value: 4.24e-81
Transferrin family of the type 2 periplasmic-binding protein superfamily; Transferrins are ...
33-368
8.56e-70
Transferrin family of the type 2 periplasmic-binding protein superfamily; Transferrins are iron-binding blood plasma glycoproteins that regulate the level of free iron in biological fluids. Vertebrate transferrins are made of a single polypeptide chain with a molecular weight of about 80 kDa. The polypeptide is folded into two homologous lobes (the N-lobe and C-lobe), and each lobe is further subdivided into two similar alpha helical and beta sheet domains separated by a deep cleft that forms the binding site for ferric iron. Thus, the transferrin protein contains two homologous metal-binding sites with high affinities for ferric iron. The modern transferrin proteins are thought to be evolved from an ancestral gene coding for a protein of 40 kDa containing a single binding site by means of a gene duplication event. Vertebrate transferrins are found in a variety of bodily fluids, including serum transferrins, ovotransferrins, lactoferrins, and melanotransferrins. Transferrin-like proteins are also found in the circulatory fluid of certain invertebrates. The transferrins have the same structural fold as the type 2 periplasmic-binding proteins, many of which are involved in chemotaxis and uptake of nutrients and other small molecules from the extracellular space as a primary receptor.
Pssm-ID: 270247 Cd Length: 298 Bit Score: 230.37 E-value: 8.56e-70
The C-lobe of transferrin, a member of the type 2 periplasmic binding protein fold superfamily; ...
368-683
5.91e-14
The C-lobe of transferrin, a member of the type 2 periplasmic binding protein fold superfamily; Transferrins are iron-binding blood plasma glycoproteins that regulate the level of free iron in biological fluids. Vertebrate transferrins are made of a single polypeptide chain with a molecular weight of about 80 kDa. The polypeptide is folded into two homologous lobes (the N-lobe and C-lobe), and each lobe is further subdivided into two similar alpha helices and beta sheets domains separated by a deep cleft that forms the binding site for ferric iron. Thus, the transferrin protein contains two homologous metal-binding sites with high affinities for ferric iron. The modern transferrin proteins are thought to be evolved from an ancestral gene coding for a protein of 40 kDa containing a single binding site by means of a gene duplication event. Vertebrate transferrins are found in a variety of bodily fluids, including serum transferrins, ovotransferrins, lactoferrins, and melanotransferrins. Transferrin-like proteins are also found in the circulatory fluid of certain invertebrates. The transferrins have the same structural fold as the type 2 periplasmic-binding proteins, many of which are involved in chemotaxis and uptake of nutrients and other small molecules from the extracellular space as a primary receptor.
Pssm-ID: 270335 Cd Length: 331 Bit Score: 73.59 E-value: 5.91e-14
The N-lobe of transferrin, a member of the type 2 periplasmic binding protein fold superfamily; ...
369-656
1.10e-13
The N-lobe of transferrin, a member of the type 2 periplasmic binding protein fold superfamily; Transferrins are iron-binding blood plasma glycoproteins that regulate the level of free iron in biological fluids. Vertebrate transferrins are made of a single polypeptide chain with a molecular weight of about 80 kDa. The polypeptide is folded into two homologous lobes (the N-lobe and C-lobe), and each lobe is further subdivided into two similar alpha helices and beta sheets domains separated by a deep cleft that forms the binding site for ferric iron. Thus, the transferrin protein contains two homologous metal-binding sites with high affinities for ferric iron. The modern transferrin proteins are thought to be evolved from an ancestral gene coding for a protein of 40 kDa containing a single binding site by means of a gene duplication event. Vertebrate transferrins are found in a variety of bodily fluids, including serum transferrins, ovotransferrins, lactoferrins, and melanotransferrins. Transferrin-like proteins are also found in the circulatory fluid of certain invertebrates. The transferrins have the same structural fold as the type 2 periplasmic-binding proteins, many of which are involved in chemotaxis and uptake of nutrients and other small molecules from the extracellular space as a primary receptor.
Pssm-ID: 270336 Cd Length: 324 Bit Score: 72.84 E-value: 1.10e-13
The N-lobe of transferrin, a member of the type 2 periplasmic binding protein fold superfamily; ...
59-299
1.72e-12
The N-lobe of transferrin, a member of the type 2 periplasmic binding protein fold superfamily; Transferrins are iron-binding blood plasma glycoproteins that regulate the level of free iron in biological fluids. Vertebrate transferrins are made of a single polypeptide chain with a molecular weight of about 80 kDa. The polypeptide is folded into two homologous lobes (the N-lobe and C-lobe), and each lobe is further subdivided into two similar alpha helices and beta sheets domains separated by a deep cleft that forms the binding site for ferric iron. Thus, the transferrin protein contains two homologous metal-binding sites with high affinities for ferric iron. The modern transferrin proteins are thought to be evolved from an ancestral gene coding for a protein of 40 kDa containing a single binding site by means of a gene duplication event. Vertebrate transferrins are found in a variety of bodily fluids, including serum transferrins, ovotransferrins, lactoferrins, and melanotransferrins. Transferrin-like proteins are also found in the circulatory fluid of certain invertebrates. The transferrins have the same structural fold as the type 2 periplasmic-binding proteins, many of which are involved in chemotaxis and uptake of nutrients and other small molecules from the extracellular space as a primary receptor.
Pssm-ID: 270336 Cd Length: 324 Bit Score: 68.99 E-value: 1.72e-12
The C-lobe of transferrin, a member of the type 2 periplasmic binding protein fold superfamily; ...
57-315
1.55e-07
The C-lobe of transferrin, a member of the type 2 periplasmic binding protein fold superfamily; Transferrins are iron-binding blood plasma glycoproteins that regulate the level of free iron in biological fluids. Vertebrate transferrins are made of a single polypeptide chain with a molecular weight of about 80 kDa. The polypeptide is folded into two homologous lobes (the N-lobe and C-lobe), and each lobe is further subdivided into two similar alpha helices and beta sheets domains separated by a deep cleft that forms the binding site for ferric iron. Thus, the transferrin protein contains two homologous metal-binding sites with high affinities for ferric iron. The modern transferrin proteins are thought to be evolved from an ancestral gene coding for a protein of 40 kDa containing a single binding site by means of a gene duplication event. Vertebrate transferrins are found in a variety of bodily fluids, including serum transferrins, ovotransferrins, lactoferrins, and melanotransferrins. Transferrin-like proteins are also found in the circulatory fluid of certain invertebrates. The transferrins have the same structural fold as the type 2 periplasmic-binding proteins, many of which are involved in chemotaxis and uptake of nutrients and other small molecules from the extracellular space as a primary receptor.
Pssm-ID: 270335 Cd Length: 331 Bit Score: 53.94 E-value: 1.55e-07
ABC transporter, phosphonate, periplasmic substrate-binding protein; This is a family of ...
430-554
1.62e-03
ABC transporter, phosphonate, periplasmic substrate-binding protein; This is a family of periplasmic proteins which are part of the transport system for alkylphosphonate uptake.
Pssm-ID: 432911 [Multi-domain] Cd Length: 243 Bit Score: 40.71 E-value: 1.62e-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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