Bacteriocin: lactococcin-G β

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Bacteriocin: lactococcin-G β

Accession: BAC053

Classification
Class: Unclassified
Genetics
Gene: LcnG-beta
Producer and target organisms

Producer Organism: Lactococcus lactis subsp (Streptococcus lactis), lactis [Gram-positive]

Taxonomy: BacteriaFirmicutesLactobacillalesStreptococcaceaeLactococcus

Target organismsUnavailable data

Description
Mode of action:
Kills Lactococci. beta peptides in a molar ratio of 7:1 or 8:1 respectively.
PROTEIN SEQUENCE, STRAIN=LMG 2081
MEDLINE=92380946;PubMed=1512201;
Nissen-Meyer J., Holo H., Havarstein L.S., Sletten K., Nes I.F.
"A novel lactococcal bacteriocin whose activity depends on the complementary action of two peptides.", J. Bacteriol. 174:5686-5692(1992).
PROTEIN STRUCTURE
PubMed=18187052;DOI=10.1016/j.bbapap.2007.12.002
Per Rogne, Gunnar Fimland, Jon Nissen-Meyer and Per Eugen Kristiansen.
"Three-dimensional structure of the two peptides that constitute the two-peptide bacteriocin lactococcin G",
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End Note
Reference Manager
BibTeX
Protein sequence
 ........10 ........20 ........30 ........40 
          |          |          |          | 
 KKWGWLAWVD PAYEFIKGFG KGAIKEGNKD KWKNI

Wheel representation
wheel representation of lactococcin-G β
3D Structure
Protein sequence annotations
Features of lactococcin-G β


FeaturePosition(s)LengthDescription
PEPTIDE1↔3535
Bacteriocin lactococcin-G subunit beta.
Feature identifier = PRO_0000044641.
HELIX5↔1915
TURN20↔223
TURN24↔263
HELIX32↔343
Composition
Hydrophobicity

Composition
Formula C198 H291 N49 O47
Absent amino acids CHMQRST
Common amino acids K
Mass (Da) 4128.38
Net charge +4
Isoelectric point 10.42
Basic residues 8
Acidic residues 4
Hydrophobic residues 14
Polar residues 8
Aliphatic residues 5
Tiny residues 8
Boman Index -39.75
Hydropathy Index -0.81
Aliphatic Index 61.43
Instability Index 10.35 (stable)
Half Life Mammalian : 1.3 hour
Yeast : 3 min
E. coli : 2 min
Extinction Coefficient 23490 M-1 cm-1
Absorbance 280nm 690.88

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