1ykb

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PDB ID 1ykb

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, resolution 2.60Å
Ligands:
Gene: IL22, ILTIF (Homo sapiens)
Coordinates: save as pdb, mmCIF, xml



Crystal Structure of Insect Cell Expressed IL-22


Overview

The crystal structure of interleukin-22 expressed in Drosophila melanogaster S2 cells (IL-22(Dm)) has been determined at 2.6 A resolution. IL-22(Dm) crystals contain six molecules in the asymmetric unit. Comparison of IL-22(Dm) and IL-22(Ec) (interleukin-22 produced in Escherichia coli) structures reveals that N-linked glycosylation causes only minor structural changes to the cytokine. However, 1-4 A main-chain differences are observed between the six IL-22(Dm) monomers at regions corresponding to the IL-22R1 and IL-10R2 binding sites. The structure of the carbohydrate and the conformational variation of IL22(Dm) provide new insights into IL-22 receptor recognition.

About this Structure

1YKB is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structure of insect-cell-derived IL-22., Xu T, Logsdon NJ, Walter MR, Acta Crystallogr D Biol Crystallogr. 2005 Jul;61(Pt 7):942-50. Epub 2005, Jun 24. PMID:15983417

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