1mr3
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Saccharomyces cerevisiae ADP-ribosylation Factor 2 (ScArf2) complexed with GDP-3'P at 1.6A resolution
OverviewOverview
Structures were determined by x-ray crystallography for two members of the ADP-ribosylation factor (ARF) family of regulatory GTPases, yeast ARF1 and ARL1, and were compared with previously determined structures of human ARF1 and ARF6. These analyses revealed an overall conserved fold but differences in primary sequence and length, particularly in an N-terminal loop, lead to differences in nucleotide and divalent metal binding. Packing of hydrophobic residues is central to the interplay between the N-terminal alpha-helix, switch I, and the interswitch region, which along with differences in surface electrostatics provide explanations for the different biophysical and biochemical properties of ARF and ARF-like proteins.
About this StructureAbout this Structure
1MR3 is a Single protein structure of sequence from Saccharomyces cerevisiae with , , , , and as ligands. Full crystallographic information is available from OCA.
ReferenceReference
Structures of yeast ARF2 and ARL1: distinct roles for the N terminus in the structure and function of ARF family GTPases., Amor JC, Horton JR, Zhu X, Wang Y, Sullards C, Ringe D, Cheng X, Kahn RA, J Biol Chem. 2001 Nov 9;276(45):42477-84. Epub 2001 Sep 4. PMID:11535602
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