4atb

From Proteopedia

(Difference between revisions)

Revision as of 07:43, 24 December 2014

Crystal structure of the NF90-NF45 dimerisation domain complex with CTP

Structural highlights

4atb is a 4 chain structure with sequence from Mus musculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	4at7, 4at8, 4at9
Resources:	FirstGlance, OCA, RCSB, PDBsum

Function

[ILF2_MOUSE] Appears to function predominantly as a heterodimeric complex with ILF3. This complex may regulate transcription of the IL2 gene during T-cell activation. It can also promote the formation of stable DNA-dependent protein kinase holoenzyme complexes on DNA (By similarity).^[1] [ILF3_MOUSE] May facilitate double-stranded RNA-regulated gene expression at the level of post-transcription. Can act as a translation inhibitory protein which binds to coding sequences of acid beta-glucosidase (GCase) and other mRNAs and functions at the initiation phase of GCase mRNA translation, probably by inhibiting its binding to polysomes. Can regulate protein arginine N-methyltransferase 1 activity. Can promote the formation of stable DNA-dependent protein kinase holoenzyme complexes on DNA (By similarity).

Publication Abstract from PubMed

Nuclear factors NF90 and NF45 form a complex involved in a variety of cellular processes and are thought to affect gene expression both at the transcriptional and translational level. In addition, this complex affects the replication of several viruses through direct interactions with viral RNA. NF90 and NF45 dimerize through their common 'DZF' domain (domain associated with zinc fingers). NF90 has additional double-stranded RNA-binding domains that likely mediate its association with target RNAs. We present the crystal structure of the NF90/NF45 dimerization complex at 1.9-A resolution. The DZF domain shows structural similarity to the template-free nucleotidyltransferase family of RNA modifying enzymes. However, both NF90 and NF45 have lost critical catalytic residues during evolution and are therefore not functional enzymes. Residues on NF90 that make up its interface with NF45 are conserved in two related proteins, spermatid perinuclear RNA-binding protein (SPNR) and zinc-finger RNA-binding protein (Zfr). Using a co-immunoprecipitation assay and site-specific mutants, we demonstrate that NF45 is also able to recognize SPNR and Zfr through the same binding interface, revealing that NF45 is able to form a variety of cellular complexes with other DZF-domain proteins.

NF45 dimerizes with NF90, Zfr and SPNR via a conserved domain that has a nucleotidyltransferase fold.,Wolkowicz UM, Cook AG Nucleic Acids Res. 2012 Oct 1;40(18):9356-68. doi: 10.1093/nar/gks696. Epub 2012 , Jul 24. PMID:22833610^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Satoh M, Shaheen VM, Kao PN, Okano T, Shaw M, Yoshida H, Richards HB, Reeves WH. Autoantibodies define a family of proteins with conserved double-stranded RNA-binding domains as well as DNA binding activity. J Biol Chem. 1999 Dec 3;274(49):34598-604. PMID:10574923
↑ Wolkowicz UM, Cook AG. NF45 dimerizes with NF90, Zfr and SPNR via a conserved domain that has a nucleotidyltransferase fold. Nucleic Acids Res. 2012 Oct 1;40(18):9356-68. doi: 10.1093/nar/gks696. Epub 2012 , Jul 24. PMID:22833610 doi:http://dx.doi.org/10.1093/nar/gks696

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/4atb"

Categories: Mus musculus | Cook, A G | Wolkowicz, U M | Immune system | Template-free nucleotidyl transferase fold

@@ Line 7: / Line 7: @@
 <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4atb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4atb OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4atb RCSB], [http://www.ebi.ac.uk/pdbsum/4atb PDBsum]</span></td></tr>
 </table>
+== Function ==
+[[http://www.uniprot.org/uniprot/ILF2_MOUSE ILF2_MOUSE]] Appears to function predominantly as a heterodimeric complex with ILF3. This complex may regulate transcription of the IL2 gene during T-cell activation. It can also promote the formation of stable DNA-dependent protein kinase holoenzyme complexes on DNA (By similarity).<ref>PMID:10574923</ref>  [[http://www.uniprot.org/uniprot/ILF3_MOUSE ILF3_MOUSE]] May facilitate double-stranded RNA-regulated gene expression at the level of post-transcription. Can act as a translation inhibitory protein which binds to coding sequences of acid beta-glucosidase (GCase) and other mRNAs and functions at the initiation phase of GCase mRNA translation, probably by inhibiting its binding to polysomes. Can regulate protein arginine N-methyltransferase 1 activity. Can promote the formation of stable DNA-dependent protein kinase holoenzyme complexes on DNA (By similarity).
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==

4atb

From Proteopedia

Revision as of 07:43, 24 December 2014

Crystal structure of the NF90-NF45 dimerisation domain complex with CTP

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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