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5tdq

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Crystal Structure of the GOLD domain of ACBD3

Structural highlights

5tdq is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.493Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

GCP60_HUMAN Involved in the maintenance of Golgi structure by interacting with giantin, affecting protein transport between the endoplasmic reticulum and Golgi. Involved in hormone-induced steroid biosynthesis in testicular Leydig cells (By similarity).^[1]

Publication Abstract from PubMed

Phosphatidylinositol 4-kinase III beta (PI4KIIIbeta) is an essential enzyme in mediating membrane transport, and plays key roles in facilitating viral infection. Many pathogenic positive-sense single-stranded RNA viruses activate PI4KIIIbeta to generate phosphatidylinositol 4-phosphate (PI4P)-enriched organelles for viral replication. The molecular basis for PI4KIIIbeta activation during viral infection has remained largely unclear. We describe the biochemical reconstitution and characterization of the complex of PI4KIIIbeta with the Golgi protein Acyl-coenzyme A binding domain containing protein 3 (ACBD3) and Aichi virus 3A protein on membranes. We find that 3A directly activates PI4KIIIbeta, and this activation is sensitized by ACBD3. The interfaces between PI4KIIIbeta-ACBD3 and ACBD3-3A were mapped with hydrogen-deuterium exchange mass spectrometry (HDX-MS). Determination of the crystal structure of the ACBD3 GOLD domain revealed a unique N terminus that mediates the interaction with 3A. Rationally designed complex-disrupting mutations in both ACBD3 and PI4KIIIbeta completely abrogated the sensitization of 3A activation by ACBD3.

The Molecular Basis of Aichi Virus 3A Protein Activation of Phosphatidylinositol 4 Kinase IIIbeta, PI4KB, through ACBD3.,McPhail JA, Ottosen EH, Jenkins ML, Burke JE Structure. 2016 Dec 7. pii: S0969-2126(16)30358-6. doi:, 10.1016/j.str.2016.11.016. PMID:27989622^[2]

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

References

↑ Sohda M, Misumi Y, Yamamoto A, Yano A, Nakamura N, Ikehara Y. Identification and characterization of a novel Golgi protein, GCP60, that interacts with the integral membrane protein giantin. J Biol Chem. 2001 Nov 30;276(48):45298-306. Epub 2001 Oct 5. PMID:11590181 doi:http://dx.doi.org/10.1074/jbc.M108961200
↑ McPhail JA, Ottosen EH, Jenkins ML, Burke JE. The Molecular Basis of Aichi Virus 3A Protein Activation of Phosphatidylinositol 4 Kinase IIIbeta, PI4KB, through ACBD3. Structure. 2016 Dec 7. pii: S0969-2126(16)30358-6. doi:, 10.1016/j.str.2016.11.016. PMID:27989622 doi:http://dx.doi.org/10.1016/j.str.2016.11.016