Bacterial ice-nucleation proteins is a

family of proteins A protein family is a group of evolutionarily related proteins. In many cases, a protein family has a corresponding gene family, in which each gene encodes a corresponding protein with a 1:1 relationship. The term "protein family" should not be ...

that enable

Gram-negative bacteria Gram-negative bacteria are bacteria that do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation. They are characterized by their cell envelopes, which are composed of a thin peptidoglycan cell wall ...

to promote

nucleation of ice An ice nucleus, also known as an ice nucleating particle (INP), is a particle which acts as the Nucleation, nucleus for the formation of an ice crystal in the Earth's atmosphere, atmosphere. Ice Nucleation Mechanisms There are a number of mechanis ...

at relatively high temperatures (above -5C). 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 Residue may refer to: Chemistry and biology * An amino acid, within a peptide chain * Crop residue, materials left after agricultural processes * Pesticide residue, refers to the pesticides that may remain on or in food after they are applied ...

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 6.residues... 6.residues... 6.residues...

References

{{DEFAULTSORT:Bacterial Ice-Nucleation Proteins Protein domains

See also

References