Summary: Sucrose-6F-phosphate phosphohydrolase
Sucrose-6F-phosphate phosphohydrolase Provide feedback
This family consists of Sucrose-6F-phosphate phosphohydrolase proteins found in plants and cyanobacteria. Sucrose-6(F)-phosphate phosphohydrolase catalyses the final step in the pathway of sucrose biosynthesis .
Lunn JE, Ashton AR, Hatch MD, Heldt HW; , Proc Natl Acad Sci U S A 2000;97:12914-12919.: Purification, molecular cloning, and sequence analysis of sucrose-6F-phosphate phosphohydrolase from plants. PUBMED:11050182 EPMC:11050182
External database links
This tab holds annotation information from the InterPro database.
InterPro entry IPR006380
This family of sequences represent sucrose phosphate phosphohydrolase (SPP) from plants and cyanobacteria [PUBMED:11050182]. SPP is a member of the Class IIB subfamily of the haloacid dehalogenase (HAD) superfamily of aspartate-nucleophile hydrolases. SPP catalyzes the final step in the biosynthesis of sucrose, a critically important molecule for plants. Sucrose phosphate synthase (SPS), the prior step in the biosynthesis of sucrose contains a domain which exhibits considerable similarity to SPP albeit without conservation of the catalytic residues. The catalytic machinery of the synthase resides in another domain. It seems likely that the phosphatase-like domain is involved in substrate binding, possibly binding both substrates in a "product-like" orientation prior to ligation by the synthase catalytic domain.
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This example describes an architecture with one
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EGFdomains, and finally a single
- the UniProt description of the protein sequence
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This clan represents the haloacid dehalogenase (HAD) superfamily that includes a diverse range of enzymes that use an asp carboxylate as a nucleophile .
The clan contains the following 21 members:5_nucleotid Acid_phosphat_B Acid_PPase DUF705 HAD HAD_2 Hydrolase Hydrolase_3 Hydrolase_6 Hydrolase_like Hydrolase_like2 LNS2 NIF NT5C PGP_phosphatase PMM PNK3P Put_Phosphatase S6PP Trehalose_PPase UMPH-1
We make a range of alignments for each Pfam-A family:
- the curated alignment from which the HMM for the family is built
- the alignment generated by searching the sequence database using the HMM
- Representative Proteomes (RPs) at 15%, 35%, 55% and 75% co-membership thresholds
- alignment generated by searching the NCBI sequence database using the family HMM
- alignment generated by searching the metagenomics sequence database using the family HMM
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1Cannot generate PP/Heatmap alignments for seeds; no PP data available
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Curation and family details
|Seed source:||Pfam-B_6442 (release 7.7)|
|Number in seed:||23|
|Number in full:||845|
|Average length of the domain:||232.40 aa|
|Average identity of full alignment:||21 %|
|Average coverage of the sequence by the domain:||49.05 %|
|HMM build commands:||
build method: hmmbuild -o /dev/null HMM SEED
search method: hmmsearch -Z 23193494 -E 1000 --cpu 4 HMM pfamseq
|Family (HMM) version:||8|
|Download:||download the raw HMM for this family|
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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 S6PP domain has been found. There are 13 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 seqence.
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