Bacterial ice-nucleation proteins
Bacterial ice-nucleation proteins is a family of proteins that enable Gram-negative bacteria to promote nucleation of ice at relatively high temperatures (above -5C).[1][2] These proteins are localised at the outer membrane surface and can cause frost damage to many plants. The primary structure of the proteins contains a highly repetitive domain that dominates the sequence. The domain comprises a number of 48-residue repeats, which themselves contain 3 blocks of 16 residues, the first 8 of which are identical. It is thought that the repetitive domain may be responsible for aligning water molecules in the seed crystal.
[.........48.residues.repeated.domain..........]
/ / | | \ \
AGYGSTxTagxxssli AGYGSTxTagxxsxlt AGYGSTxTaqxxsxlt
[16.residues...] [16.residues...] [16.residues...]
| Bacterial ice-nucleation proteins octamer repeat | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| Symbol | Ice_nucleatn | ||||||||
| Pfam | PF00818 | ||||||||
| InterPro | IPR000258 | ||||||||
| PROSITE | PDOC00283 | ||||||||
| |||||||||
See also
References
- Wolber PK, Green RL (October 1990). "Detection of bacteria by transduction of ice nucleation genes". Trends in Biotechnology. 8 (10): 276–9. doi:10.1016/0167-7799(90)90195-4. PMID 1366726.
- Gurian-Sherman D, Lindow SE (November 1993). "Bacterial ice nucleation: significance and molecular basis". FASEB Journal. 7 (14): 1338–43. doi:10.1096/fasebj.7.14.8224607. PMID 8224607. S2CID 12368098.
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