Abstract
Sufu (Suppressor of Fused), a two-domain protein, plays a critical role in regulating Hedgehog signaling and is conserved from flies to humans. A few bacterial Sufu-like proteins have previously been identified based on sequence similarity to the N-terminal domain of eukaryotic Sufu proteins, but none have been structurally or biochemically characterized and their function in bacteria is unknown. We have determined the crystal structure of a more distantly related Sufu-like homolog, NGO1391 from Neisseria gonorrhoeae, at 1.4 Å resolution, which provides the first biophysical characterization of a bacterial Sufu-like protein. The structure revealed a striking similarity to the N-terminal domain of human Sufu (r.m.s.d. of 2.6 Å over 93% of the NGO1391 protein), despite an extremely low sequence identity of ∼15%. Subsequent sequence analysis revealed that NGO1391 defines a new subset of smaller, Sufu-like proteins that are present in ∼200 bacterial species and has resulted in expansion of the SUFU (PF05076) family in Pfam. Published by Wiley-Blackwell.
Original language | English (US) |
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Pages (from-to) | 2131-2140 |
Number of pages | 10 |
Journal | Protein Science |
Volume | 19 |
Issue number | 11 |
DOIs | |
State | Published - Nov 2010 |
Externally published | Yes |
Keywords
- NGO1391
- Neisseria gonorrhoeae
- Pfam PF05076
- Structural genomics
- Sufu-like
- Suppressor of fused
- UniProt Q5F6Z8
ASJC Scopus subject areas
- Biochemistry
- Molecular Biology