Summary: Bacterial fructose-1,6-bisphosphatase, glpX-encoded
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Bacterial fructose-1,6-bisphosphatase, glpX-encoded Provide feedback
No Pfam abstract.
Donahue JL, Bownas JL, Niehaus WG, Larson TJ; , J Bacteriol 2000;182:5624-5627.: Purification and characterization of glpX-encoded fructose 1, 6-bisphosphatase, a new enzyme of the glycerol 3-phosphate regulon of Escherichia coli. PUBMED:10986273 EPMC:10986273
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This tab holds annotation information from the InterPro database.
InterPro entry IPR004464
Gluconeogenesis is an important metabolic pathway, which produces glucose from noncarbohydrate precursors such as organic acids, fatty acids, amino acids, or glycerol. Fructose-1,6-bisphosphatase, a key enzyme of gluconeogenesis, is found in all organisms, and five different classes of these enzymes have been identified.
This entry represents the class 2 fructose-1,6-bisphosphatases, which include GlpX and YggF of Escherichia coli (strain K12), which show different catalytic properties. The crystal structure of GlpX has been determined in a free state and in the complex with a substrate (fructose 1,6-bisphosphate) or inhibitor (phosphate). The crystal structure of the ligand-free GlpX revealed a compact, globular shape with two alpha/beta-sandwich domains. The core fold of GlpX is structurally similar to that of Li+-sensitive phosphatases suggesting that they have a common evolutionary origin and catalytic mechanism. The structure of the GlpX complex with fructose 1,6-bisphosphate revealed that the active site is located between two domains and accommodates several conserved residues coordinating two metal ions and the substrate. A third metal ion is bound to phosphate 6 of the substrate. Inorganic phosphate strongly inhibited activity of both GlpX and YggF, and the crystal structure of the GlpX complex with phosphate demonstrated that the inhibitor molecule binds to the active site. Alanine replacement mutagenesis of GlpX identifies 12 conserved residues important for activity and suggested that Thr(90) is the primary catalytic residue [ PUBMED:19073594 ].
A number of the proteins in this entry, particularly those from algae are bi functional and can catalyzes the hydrolysis of fructose 1,6-bisphosphate and sedoheptulose 1,7-bisphosphate to fructose 6-phosphate and sedoheptulose 7-phosphate, respectively.
The mapping between Pfam and Gene Ontology is provided by InterPro. If you use this data please cite InterPro.
|Molecular function||fructose 1,6-bisphosphate 1-phosphatase activity (GO:0042132)|
|Biological process||glycerol metabolic process (GO:0006071)|
Below is a listing of the unique domain organisations or architectures in which this domain is found. More...
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This family is a member of clan Phospoesterase (CL0171), which has the following description:
Members of this clan show metal-dependent / lithium sensitive phosphomonoesterase activity. The clan includes inositol polyphosphate 1 phosphatase and fructose 1,6-bisphosphatase .
The clan contains the following 3 members:FBPase FBPase_glpX Inositol_P
We store a range of different sequence alignments for families. As well as the seed alignment from which the family is built, we provide the full alignment, generated by searching the sequence database (reference proteomes) using the family HMM. We also generate alignments using four representative proteomes (RP) sets and the UniProtKB sequence database. More...
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We make a range of alignments for each Pfam-A family. You can see a description of each above. You can view these alignments in various ways but please note that some types of alignment are never generated while others may not be available for all families, most commonly because the alignments are too large to handle.
1Cannot generate PP/Heatmap alignments for seeds; no PP data available
Key: available, not generated, — not available.
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This page displays the phylogenetic tree for this family's seed alignment. We use FastTree to calculate neighbour join trees with a local bootstrap based on 100 resamples (shown next to the tree nodes). FastTree calculates approximately-maximum-likelihood phylogenetic trees from our seed alignment.
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|Seed source:||Pfam-B_3515 (release 6.5)|
|Number in seed:||202|
|Number in full:||4007|
|Average length of the domain:||304.7 aa|
|Average identity of full alignment:||52 %|
|Average coverage of the sequence by the domain:||92.7 %|
|HMM build commands:||
build method: hmmbuild -o /dev/null HMM SEED
search method: hmmsearch -Z 61295632 -E 1000 --cpu 4 HMM pfamseq
|Family (HMM) version:||16|
|Download:||download the raw HMM for this family|
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Unmapped species names
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For all of the domain matches in a full alignment, we count the number that are found on all sequences in the alignment. This total is shown in the purple box.
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For those sequences which have a structure in the Protein DataBank, we use the mapping between UniProt, PDB and Pfam coordinate systems from the PDBe group, to allow us to map Pfam domains onto UniProt sequences and three-dimensional protein structures. The table below shows the structures on which the FBPase_glpX domain has been found. There are 24 instances of this domain found in the PDB. Note that there may be multiple copies of the domain in a single PDB structure, since many structures contain multiple copies of the same protein sequence.
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AlphaFold Structure Predictions
The list of proteins below match this family and have AlphaFold predicted structures. Click on the protein accession to view the predicted structure.