Download MendeleyCrystal structure of human dual specificity phosphatase, JNK stimulatory phosphatase-1, at 1.5 A resolution
Yokota, T., Nara, Y., Kashima, A., Matsubara, K., Misawa, S., Kato, R., Sugio, S.(2006) Proteins 66: 272-278
- PubMed: 17068812
- DOI: https://doi.org/10.1002/prot.21152
- Primary Citation of Related Structures:
1WRM - PubMed Abstract:
Human JNK stimulatory phosphatase-1 (JSP-1) is a novel member of dual specificity phosphatases. A C-terminus truncated JSP-1 was expressed in Escherichia coli and was crystallized using the sitting-drop vapor diffusion method. Thin-plate crystals obtained at 278 K belong to a monoclinic space group, C2, with unit-cell parameters a = 84.0 A, b = 49.3 A, c = 47.3 A, and beta = 119.5 degrees , and diffract up to 1.5 A resolution at 100 K. The structure of JSP-1 has a single compact (alpha/beta) domain, which consists of six alpha-helices and five beta-strands, and shows a conserved structural scaffold in regard to both DSPs and PTPs. A cleft formed by a PTP-loop at the active site is very shallow, and is occupied by one sulfonate compound, MES, at the bottom. In the binary complex structure of JSP-1 with MES, the conformations of three important segments in regard to the catalytic mechanism are not similar to those in PTP1B. JSP-1 has no loop corresponding to the Lys120-loop of PTP1B, and tryptophan residue corresponding to the substrate-stacking in PTP1B is substituted by alanine residue in JSP-1.
Organizational Affiliation:
ZOEGENE Corporation, 1000 Kamoshida, Aoba, Yokohama, Kanagawa 227-8502, Japan.
