5JNV
Crystal structure of bovine low molecular weight protein tyrosine phosphatase (LMPTP) mutant (W49Y N50E) complexed with HEPES
Summary for 5JNV
| Entry DOI | 10.2210/pdb5jnv/pdb |
| Related | 5JNR 5JNS 5JNT 5JNU 5JNW |
| Descriptor | Low molecular weight phosphotyrosine protein phosphatase, 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID, DIMETHYL SULFOXIDE, ... (4 entities in total) |
| Functional Keywords | protein tyrosine phosphatase, hydrolase, lmw-ptp, lmptp |
| Biological source | Bos taurus (Bovine) |
| Total number of polymer chains | 1 |
| Total formula weight | 18555.14 |
| Authors | Stanford, S.M.,Aleshin, A.E.,Liddington, R.C.,Bankston, L.,Cadwell, G.,Bottini, N. (deposition date: 2016-04-30, release date: 2017-03-29, Last modification date: 2023-09-27) |
| Primary citation | Stanford, S.M.,Aleshin, A.E.,Zhang, V.,Ardecky, R.J.,Hedrick, M.P.,Zou, J.,Ganji, S.R.,Bliss, M.R.,Yamamoto, F.,Bobkov, A.A.,Kiselar, J.,Liu, Y.,Cadwell, G.W.,Khare, S.,Yu, J.,Barquilla, A.,Chung, T.D.Y.,Mustelin, T.,Schenk, S.,Bankston, L.A.,Liddington, R.C.,Pinkerton, A.B.,Bottini, N. Diabetes reversal by inhibition of the low-molecular-weight tyrosine phosphatase. Nat. Chem. Biol., 13:624-632, 2017 Cited by PubMed Abstract: Obesity-associated insulin resistance plays a central role in type 2 diabetes. As such, tyrosine phosphatases that dephosphorylate the insulin receptor (IR) are potential therapeutic targets. The low-molecular-weight protein tyrosine phosphatase (LMPTP) is a proposed IR phosphatase, yet its role in insulin signaling in vivo has not been defined. Here we show that global and liver-specific LMPTP deletion protects mice from high-fat diet-induced diabetes without affecting body weight. To examine the role of the catalytic activity of LMPTP, we developed a small-molecule inhibitor with a novel uncompetitive mechanism, a unique binding site at the opening of the catalytic pocket, and an exquisite selectivity over other phosphatases. This inhibitor is orally bioavailable, and it increases liver IR phosphorylation in vivo and reverses high-fat diet-induced diabetes. Our findings suggest that LMPTP is a key promoter of insulin resistance and that LMPTP inhibitors would be beneficial for treating type 2 diabetes. PubMed: 28346406DOI: 10.1038/nchembio.2344 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (1.6 Å) |
Structure validation
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