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0TRIM9_HUMAN*   SwissProt (?) | Description Local Annotation Link Reference
General Information
DescriptionTripartite motif protein 9 (ring finger protein 91).
SpeciesHomo sapiens (NCBI taxonomy ID: 9606)
Domain Architecture (Details)
InterPro domains unassigned to SynO:
The B-box C-terminal domain is a coiled coil region C-terminal to (some) B-Box domains. It is found in transcription intermediary factor 1-alpha.hich associates with DNA-bound estrogen receptors; ring finger protein. putative transcriptional regulator; and the GTP-binding protein Ard-1.
  IPR003649:B-box, C-terminal
The SPRY domain is of unknown function. Distant homologues are domains inbutyrophilin/marenostrin/pyrin .Ca2+-release from the sarcoplasmic or endoplasmic reticulum.he intracellular Ca2+ store.s mediated by the ryanodine receptor (RyR) and/or the inositol trisphosphate receptor (IP3R).
  IPR003877:SPla/RYanodine receptor SPRY
Fibronectins are multi-domain glycoproteins found in a soluble form in plasma.nd in an insoluble form in loose connective tissue and basement membranes . They contain multiple copies of 3 repeat regions (types I.I and III).hich bind to a variety of substances including heparin.ollagen.NA.ctin.ibrin and fibronectin receptors on cell surfaces. The wide variety of these substances means that fibronectins are involved in a number of important functions: e.g..ound healing; cell adhesion; blood coagulation; cell differentiation and migration; maintenance of the cellular cytoskeleton; and tumour metastasis . The role of fibronectin in cell differentiation is demonstrated by the marked reduction in the expression of its gene when neoplastic transformation occurs. Cell attachment has been found to be mediated by the binding of the tetrapeptide RGDS to integrins on the cell surface .lthough related sequences can also display cell adhesion activity.Plasma fibronectin occurs as a dimer of 2 different subunits.inked together by 2 disulphide bonds near the C-terminus. The difference in the 2 chains occurs in the type III repeat region and is caused by alternative splicing of the mRNA from one gene . The observation that.n a given protein.n individual repeat of one of the 3 types (e.g..he first FnIII repeat) shows much less similarity to its subsequent tandem repeats within that protein than to its equivalent repeat between fibronectins from other suggested that the repeating structure of fibronectin arose at an early stage of evolution. It also seems to suggest that the structure is subject to high selective pressure .The fibronectin type III repeat region is an approximately 100 amino acid domain.ifferent tandem repeats of which contain binding sites for DNA.eparin and the cell surface . The superfamily of sequences believed to contain FnIII repeats represents 45 different families.he majority of which are involved in cell surface binding in some manner.r are receptor protein tyrosine kinases.r cytokine receptors.
  IPR003961:Fibronectin, type III
Quality control of intracellular proteins is essential for cellular homeostasis. Molecular chaperones recognise and contribute to the refolding of misfolded or unfolded proteins.hereas the ubiquitin-proteasome system mediates the degradation of such abnormal proteins. Ubiquitin-protein ligases (E3s) determine the substrate specificity for ubiquitylation and have been classified into HECT and RING-finger families. More recently.owever.-box proteins.hich contain a domain (the U box) of about 70 amino acids that is conserved from yeast to humans.ave been identified as a new type of E3 .The RING-finger is a specialised type of Zn-finger of 40 to 60 residues that binds two atoms of zinc.nd is probably involved in mediating protein-protein interactions. . There are two different variants.he C3HC4-type and a C3H2C3-type.hich is clearly related despite the different cysteine/histidine pattern. The latter type is sometimes referred to as RING-H2 finger. The RING domain is a protein interaction domain which has been implicated in a range of diverse biological processes.E3 ubiquitin-protein ligase activity is intrinsic to the RING domain ofc-Cbl and is likely to be a general function of this domain; Various RINGfingers exhibit binding to E2 ubiquitin-conjugating enzymes (Ubcs) .Several 3D-structures for RING-fingers are known . The 3D structure of the zinc ligation system is unique to the RING domain and is referred to as the cross-brace motif. The spacing of the cysteines in such a domain is C-x(2)-C-x(9 to 39)-C-x(1 to 3)-H-x(2 to 3)-C-x(2)-C-x(4 to 48)-C-x(2)-C. Metal ligand pairs one and three co-ordinate to bind one zinc ion.hilst pairs two and four bind the second.s illustrated in the following schematic representation:Note that in the older literature.ome RING-fingers are denoted as LIM-domains. The LIM-domain Zn-finger is a fundamentally different family.lbeit with similar Cys-spacing (see ).
  IPR001841:Zinc finger, RING-type
The B-box zinc finger is an around 40 amino acids domain. One or two copies ofthis motif are generally associated with a ring finger and a coiled coil motifto form the so-called tripartite motif. It is found essentially intranscription factors.ibonucleoproteins and protooncoproteins.ut nofunction is clearly assigned to this domain . It has been shown to beessential but not sufficient to localize the PML protein in a punctate patternin interphase nuclei . Among the 7 possible ligands for the zinc atomcontained in a B-box.nly 4 are used and bind one zinc atom in a Cys2-His2tetrahedral arrangement. The NMR analysis reveals that the B-box structurecomprises two beta-strands.wo helical turns and three extended loop regionsdifferent from any other zinc binding motif .
  IPR000315:Zinc finger, B-box
Fibronectin is composed of three repeating structural motifs.f which one is the FnIII module. The three modules form a linear sequence of multiple tandem copies connected by short linker peptides. The secondary structure of the FnIII10 module.hich is the only fibronectin module to possess an integrin binding RGD motif.onsists of two beta-sheets containing the antiparallel beta-strands ABE and DCFG.espectively.hich fold up to form a beta-sandwich. The RGD sequence is located in the loop connecting the beta-strands .The SSF signature in this entry is currently under review. Please be aware that some of the protein hits may be false positives.
  IPR008957:Fibronectin, type III-like fold
SequencesProtein: TRIM9_HUMAN (710 aa)
mRNA: NM_015163
Local Annotation
Synapse Ontology
Various stages of the synaptic vesicle cycle, including attachment, prefusion, triggering, recycling and reloading of the vesicles with transmitter.
sdb:0098 synaptic vesicle cycling  (Evidence:keywords)
attachment of the vesicle filled with transmitters involves a specific interaction between the vesicle membrane and the presynaptic active zone.
sdb:0148 docking  (Evidence:keywords)
KO assignmentNot mapped to KEGG
Loci Structure (Details)Loci index, Chromosomal location, Length, Possible relational loci clusterExon1: 697 residues, 50511732-50513821Exon2: 56 residues, 50515854-50516017Exon3: 103 residues, 50518267-50518571Exon4: 48 residues, 50534517-50534656Exon5: 54 residues, 50537150-50537308Exon6: 53 residues, 50545547-50545701Exon7: 39 residues, 50546851-50546962Exon8: 43 residues, 50559302-50559425Exon9: 34 residues, 50561732-50561828Exon10: 406 residues, 50630585-50631797Exon11: 2 residues, -Jump to TRIM9_HUMAN  
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