Repeat

Bacterial ice-nucleation, octamer repeat (IPR000258)

Short name: Ice_nucleatn

Description

Certain Gram-negative bacteria express proteins that enable them to promote nucleation of ice at relatively high temperatures (above -5C) [PMID: 1366726, PMID: 8224607]. 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...]

GO terms

Biological Process

No terms assigned in this category.

Molecular Function

No terms assigned in this category.

Cellular Component

GO:0009279 cell outer membrane

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.
PRINTS
PROSITE patterns
Pfam