3nku: Difference between revisions
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{{STRUCTURE_3nku| PDB=3nku | SCENE= }} | {{STRUCTURE_3nku| PDB=3nku | SCENE= }} | ||
===Crystal structure of the N-terminal domain of DrrA/SidM from Legionella pneumophila=== | ===Crystal structure of the N-terminal domain of DrrA/SidM from Legionella pneumophila=== | ||
{{ABSTRACT_PUBMED_20651120}} | |||
==Function== | |||
[[http://www.uniprot.org/uniprot/Q29ST3_LEGPN Q29ST3_LEGPN]] Virulence effector that plays a key role in hijacking the host vesicular trafficking by recruiting the small guanosine triphosphatase (GTPase) Rab1 to the cytosolic face of the Legionella-containing vacuole (LCVs). Acts as a GDP-GTP exchange factor (GEF) for the small GTPase Rab1 (RAB1A, RAB1B or RAB1C), thereby converting Rab1 to an active GTP-bound state, leading to the incorporation of Rab1 into LCVs. Also shows RabGDI displacement factor (GDF) activity; however, this probably represents a passive activity following the GEF activity. Also acts as an adenylyltransferase by mediating the addition of adenosine 5'-monophosphate (AMP) to 'Tyr-77' of host RAB1B, thereby rendering RAB1B constitutively active. Also has adenylyltransferase activity towards Rab6 and Rab35. Also displays guanylyltransferase activity by mediating the addition of guanosine 5'-monophosphate (GMP) to host RAB1B in vitro; however such activity remains uncertain in vivo. Specifically binds phosphatidylinositol 4-phosphate (PtdIns(4)P) lipids on the cytosolic surface of the phagosomal membrane shortly after infection.<ref>PMID:16906144</ref> <ref>PMID:17952054</ref> <ref>PMID:20651120</ref> | |||
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==About this Structure== | ==About this Structure== | ||
[[3nku]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Legionella_pneumophila_subsp._pneumophila Legionella pneumophila subsp. pneumophila]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3NKU OCA]. | |||
==Reference== | ==Reference== | ||
<ref group="xtra">PMID: | <ref group="xtra">PMID:020651120</ref><references group="xtra"/><references/> | ||
[[Category: Legionella pneumophila subsp. pneumophila]] | [[Category: Legionella pneumophila subsp. pneumophila]] | ||
[[Category: Blankenfeldt, W.]] | [[Category: Blankenfeldt, W.]] | ||
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[[Category: Sidm]] | [[Category: Sidm]] | ||
[[Category: Vesicular transport]] | [[Category: Vesicular transport]] | ||