divalent metal cation transporter belonging to the NRAMP family, similar to the Escherichia coli MntH, which transports ions such as Mn2+ or Fe2+ across the cellular membrane
Natural resistance-associated macrophage protein; The natural resistance-associated macrophage ...
50-409
1.32e-128
Natural resistance-associated macrophage protein; The natural resistance-associated macrophage protein (NRAMP) family consists of Nramp1, Nramp2, and yeast proteins Smf1 and Smf2. The NRAMP family is a novel family of functional related proteins defined by a conserved hydrophobic core of ten transmembrane domains. This family of membrane proteins are divalent cation transporters. Nramp1 is an integral membrane protein expressed exclusively in cells of the immune system and is recruited to the membrane of a phagosome upon phagocytosis. By controlling divalent cation concentrations Nramp1 may regulate the interphagosomal replication of bacteria. Mutations in Nramp1 may genetically predispose an individual to susceptibility to diseases including leprosy and tuberculosis conversely this might however provide protection form rheumatoid arthritis. Nramp2 is a multiple divalent cation transporter for Fe2+, Mn2+ and Zn2+ amongst others it is expressed at high levels in the intestine; and is major transferrin-independent iron uptake system in mammals. The yeast proteins Smf1 and Smf2 may also transport divalent cations.
Pssm-ID: 426327 [Multi-domain] Cd Length: 356 Bit Score: 375.37 E-value: 1.32e-128
NRAMP (natural resistance-associated macrophage protein) metal ion transporters; This model ...
28-402
4.39e-104
NRAMP (natural resistance-associated macrophage protein) metal ion transporters; This model describes the Nramp metal ion transporter family. Historically, in mammals these proteins have been functionally characterized as proteins involved in the host pathogen resistance, hence the name - NRAMP. At least two isoforms Nramp1 and Nramp2 have been identified. However the exact mechanism of pathogen resistance was unclear, until it was demonstrated by expression cloning and electrophysiological techniques that this protein was a metal ion transporter. It was also independently demonstrated that a microcytic anemia (mk) locus in mouse, encodes a metal ion transporter (DCT1 or Nramp2). The transporter has a broad range of substrate specificity that include Fe+2, Zn+2, Mn+2, Co+2, Cd+2, Cu+2, Ni+2 and Pb+2. The uptake of these metal ions is coupled to proton symport. Metal ions are essential cofactors in a number of biological process including, oxidative phosphorylation, gene regulation and metal ion homeostasis. Nramp1 could confer resistance to infection in one of the two ways. (1) The uptake of Fe+2 can produce toxic hydroxyl radicals via Fenton reaction killing the pathogens in phagosomes or (2) Deplete the metal ion pools in the phagosome and deprive the pathogens of metal ions, which is critical for its survival. [Transport and binding proteins, Cations and iron carrying compounds]
Pssm-ID: 162246 Cd Length: 390 Bit Score: 314.35 E-value: 4.39e-104
Nramp family divalent metal transporter; Nramp (natural resistance-associated macrophage ...
35-398
6.44e-36
Nramp family divalent metal transporter; Nramp (natural resistance-associated macrophage protein) family divalent metal transporters are widely conserved divalent metal transporters, which enables manganese import in bacteria and dietary iron uptake in mammals.
Pssm-ID: 468301 Cd Length: 404 Bit Score: 136.34 E-value: 6.44e-36
Natural resistance-associated macrophage protein; The natural resistance-associated macrophage ...
50-409
1.32e-128
Natural resistance-associated macrophage protein; The natural resistance-associated macrophage protein (NRAMP) family consists of Nramp1, Nramp2, and yeast proteins Smf1 and Smf2. The NRAMP family is a novel family of functional related proteins defined by a conserved hydrophobic core of ten transmembrane domains. This family of membrane proteins are divalent cation transporters. Nramp1 is an integral membrane protein expressed exclusively in cells of the immune system and is recruited to the membrane of a phagosome upon phagocytosis. By controlling divalent cation concentrations Nramp1 may regulate the interphagosomal replication of bacteria. Mutations in Nramp1 may genetically predispose an individual to susceptibility to diseases including leprosy and tuberculosis conversely this might however provide protection form rheumatoid arthritis. Nramp2 is a multiple divalent cation transporter for Fe2+, Mn2+ and Zn2+ amongst others it is expressed at high levels in the intestine; and is major transferrin-independent iron uptake system in mammals. The yeast proteins Smf1 and Smf2 may also transport divalent cations.
Pssm-ID: 426327 [Multi-domain] Cd Length: 356 Bit Score: 375.37 E-value: 1.32e-128
NRAMP (natural resistance-associated macrophage protein) metal ion transporters; This model ...
28-402
4.39e-104
NRAMP (natural resistance-associated macrophage protein) metal ion transporters; This model describes the Nramp metal ion transporter family. Historically, in mammals these proteins have been functionally characterized as proteins involved in the host pathogen resistance, hence the name - NRAMP. At least two isoforms Nramp1 and Nramp2 have been identified. However the exact mechanism of pathogen resistance was unclear, until it was demonstrated by expression cloning and electrophysiological techniques that this protein was a metal ion transporter. It was also independently demonstrated that a microcytic anemia (mk) locus in mouse, encodes a metal ion transporter (DCT1 or Nramp2). The transporter has a broad range of substrate specificity that include Fe+2, Zn+2, Mn+2, Co+2, Cd+2, Cu+2, Ni+2 and Pb+2. The uptake of these metal ions is coupled to proton symport. Metal ions are essential cofactors in a number of biological process including, oxidative phosphorylation, gene regulation and metal ion homeostasis. Nramp1 could confer resistance to infection in one of the two ways. (1) The uptake of Fe+2 can produce toxic hydroxyl radicals via Fenton reaction killing the pathogens in phagosomes or (2) Deplete the metal ion pools in the phagosome and deprive the pathogens of metal ions, which is critical for its survival. [Transport and binding proteins, Cations and iron carrying compounds]
Pssm-ID: 162246 Cd Length: 390 Bit Score: 314.35 E-value: 4.39e-104
Nramp family divalent metal transporter; Nramp (natural resistance-associated macrophage ...
35-398
6.44e-36
Nramp family divalent metal transporter; Nramp (natural resistance-associated macrophage protein) family divalent metal transporters are widely conserved divalent metal transporters, which enables manganese import in bacteria and dietary iron uptake in mammals.
Pssm-ID: 468301 Cd Length: 404 Bit Score: 136.34 E-value: 6.44e-36
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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(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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Retrieve proteins that contain one or more of the domains present in the query sequence, using the Conserved Domain Architecture Retrieval Tool
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