This is the N-terminal domain of Translation initiation factor 5A from eukaryotes and archaea, which has a SH2-like fold. These proteins are involved in translation elongation and eIF5A is specifically required to promote peptide-bond formation between consecutive proline residues [1-5]. This entry also includes Woronin body major protein Hex1, which is similar to eIF5A.

1: Structure of translation initiation factor 5A from Pyrobaculum aerophilum at 1.75 A resolution. Peat TS, Newman J, Waldo GS, Berendzen J, Terwilliger TC; Structure 1998;6:1207-1214. PMID:9753699

2: Crystal structures of eukaryotic translation initiation factor 5A from Methanococcus jannaschii at 1.8 A resolution. Kim KK, Hung LW, Yokota H, Kim R, Kim SH; Proc Natl Acad Sci U S A. 1998;95:10419-10424. PMID:9724718

3: Crystal structure of hyperthermophilic archaeal initiation factor 5A: a homologue of eukaryotic initiation factor 5A (eIF-5A). Yao M, Ohsawa A, Kikukawa S, Tanaka I, Kimura M; J Biochem. 2003;133:75-81. PMID:12761201

4: A HEX-1 crystal lattice required for Woronin body function in Neurospora crassa. Yuan P, Jedd G, Kumaran D, Swaminathan S, Shio H, Hewitt D, Chua NH, Swaminathan K; Nat Struct Biol. 2003;10:264-270. PMID:12640443

5: Crystal structure of human eIF5A1: insight into functional similarity of human eIF5A1 and eIF5A2. Tong Y, Park I, Hong BS, Nedyalkova L, Tempel W, Park HW; Proteins. 2009;75:1040-1045. PMID:19280598