Summary: Follistatin/Osteonectin-like EGF domain
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Follistatin/Osteonectin-like EGF domain Provide feedback
Members of this family are predominantly found in osteonectin and follistatin and adopt an EGF-like fold [1,2].
Sasaki T, Hohenester E, Gohring W, Timpl R; , EMBO J. 1998;17:1625-1634.: Crystal structure and mapping by site-directed mutagenesis of the collagen-binding epitope of an activated form of BM-40/SPARC/osteonectin. PUBMED:9501084 EPMC:9501084
External database links
This tab holds annotation information from the InterPro database.
InterPro entry IPR015369
This domain is predominantly found in osteonectin and follistatin. They adopt an EGF-like structure [PUBMED:12867435, PUBMED:9501084]. Follistatin is involved in diverse activities from embryonic development to cell secretion.
The mapping between Pfam and Gene Ontology is provided by InterPro. If you use this data please cite InterPro.
|Molecular function||protein binding (GO:0005515)|
- the number of sequences which exhibit this architecture
a textual description of the architecture, e.g. Gla, EGF x 2, Trypsin.
This example describes an architecture with one
Gladomain, followed by two consecutive
EGFdomains, and finally a single
- the UniProt description of the protein sequence
- the number of residues in the sequence
- the Pfam graphic itself.
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Members of this clan all belong to the EGF superfamily. This particular superfamily is characterised as having least 6 cysteines residues. These cysteine form disulphide bonds, in the order 1-3, 2-4, 5-6, which are essential for the stability of the EGF fold. These disulphide bonds are stacked in a ladder-like arrangement. The Laminin EGF family is distinguished by having an an additional disulphide bond. The function of the domains within this family remains unclear, but they are though to largely perform a structural role. More often than not, there domains are arranged a tandem repeats in extracellular proteins.
The clan contains the following 14 members:cEGF DSL EGF EGF_2 EGF_3 EGF_alliinase EGF_CA EGF_MSP1_1 FOLN FXa_inhibition hEGF Laminin_EGF Plasmod_Pvs28 Tme5_EGF_like
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
Key: available, not generated, — not available.
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Curation and family details
|Author:||Sammut SJ, Bateman A|
|Number in seed:||27|
|Number in full:||508|
|Average length of the domain:||21.90 aa|
|Average identity of full alignment:||49 %|
|Average coverage of the sequence by the domain:||6.24 %|
|HMM build commands:||
build method: hmmbuild -o /dev/null HMM SEED
search method: hmmsearch -Z 80369284 -E 1000 --cpu 4 HMM pfamseq
|Family (HMM) version:||6|
|Download:||download the raw HMM for this family|
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There are 4 interactions for this family. More...
We determine these interactions using iPfam, which considers the interactions between residues in three-dimensional protein structures and maps those interactions back to Pfam families. You can find more information about the iPfam algorithm in the journal article that accompanies the website.
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 FOLN domain has been found. There are 21 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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