2.8 Å resolution crystal structure of human TRAIL, a cytokine with selective antitumor activity

Sun Shin Cha, Min Sung Kim, Yo Han Choi, Byung Je Sung, Nam Kyu Shin, Hang Cheol Shin, Young Chul Sung, Byung Ha Oh

Research output: Contribution to journalArticlepeer-review

134 Scopus citations

Abstract

TRAIL is a newly identified cytokine belonging to the large tumor necrosis factor (TNF) family. TRAIL is a novel molecule inducing apoptosis in a wide variety of tumor cells but not in normal cells. To help in elucidating its biological roles and designing mutants with improved therapeutic potential, we have determined the crystal structure of human TRAIL. The structure reveals that a unique frame insertion of 12-16 amino acids adopts a salient loop structure penetrating into the receptor-binding site. The loop drastically alters the common receptor-binding surface of the TNF family most likely for the specific recognition of cognate partners. A structure-based mutagenesis study demonstrates a critical role of the insertion loop in the cytotoxic activity of TRAIL.

Original languageEnglish
Pages (from-to)253-261
Number of pages9
JournalImmunity
Volume11
Issue number2
DOIs
StatePublished - Aug 1999

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