1xm2
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Crystal structure of Human PRL-1
OverviewOverview
The PRL phosphatases, which constitute a subfamily of the protein tyrosine, phosphatases (PTPs), are implicated in oncogenic and metastatic processes., Here, we report the crystal structure of human PRL-1 determined at 2.7A, resolution. The crystal structure reveals the shallow active-site pocket, with highly hydrophobic character. A structural comparison with the, previously determined NMR structure of PRL-3 exhibits significant, differences in the active-site region. In the PRL-1 structure, a sulfate, ion is bound to the active-site, providing stabilizing interactions to, maintain the canonically found active conformation of PTPs, whereas the, NMR structure exhibits an open conformation of the active-site. We also, found that PRL-1 forms a trimer in the crystal and the trimer exists in, the membrane fraction of cells, suggesting the possible biological, regulation of PRL-1 activity by oligomerization. The detailed structural, information on the active enzyme conformation and regulation of PRL-1, provides the structural basis for the development of potential inhibitors, of PRL enzymes.
About this StructureAbout this Structure
1XM2 is a Single protein structure of sequence from Homo sapiens with SO4 as ligand. Active as Protein-tyrosine-phosphatase, with EC number 3.1.3.48 Full crystallographic information is available from OCA.
ReferenceReference
Trimeric structure of PRL-1 phosphatase reveals an active enzyme conformation and regulation mechanisms., Jeong DG, Kim SJ, Kim JH, Son JH, Park MR, Lim SM, Yoon TS, Ryu SE, J Mol Biol. 2005 Jan 14;345(2):401-13. PMID:15571731
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