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Updated Date: Stock Protein updated on 20171228
Research areas: Others
Target / Protein: lktA
Biologically active: Not Tested
Expression system: E.coli
Species of origin: Mannheimia haemolytica (Pasteurella haemolytica)
Delivery time: 3-7 business days
Uniprot ID: P55118
AA Sequence: MGNKLTNISTNLKSSWLTAKSGLNRTGQSLAKAGQSLKTGAKKIILYIPKDYQYDTEKGNGLQDLVKAAEELGIEVQKEEGNDIAKAQTSLGTIQNVLGLTERGIVLSAPQLDKLLQKTKVGQAIGSAENLTKGFSNAKTVLSGIQSILGSVLAGMDLDEALQKNSNELTLAKAGLELTNSLIENIANSVKTLDAFGDQINQLGSKLQNVKGLSSLGDKLKGLSGFDKT
Tag info: N-terminal 10xHis-tagged and C-terminal Myc-tagged
Expression Region: 1-229aa
Protein length: Partial
MW: 29.2 kDa
Relevance: Pasteurella leukotoxins are exotoxins that attack host leukocytes and especially polymorphonuclear cells, by causing cell rupture. The leukotoxin binds to the host LFA-1 integrin and induces a signaling cascade leading to many biological effects, including tyrosine phosphorylation of the CD18 tail, elevation of the intracellular Ca2+ and lysis of the host cell. This leukotoxin is a major contributor to the pathogenesis of lung injury in ovine pneumonic pasteurellosis. It has also weak hemolytic activity
Reference: "Molecular analysis of the leukotoxin determinants from Pasteurella haemolytica serotypes 1 to 16." Burrows L.L., Olah-Winfield E., Lo R.Y.C. Infect. Immun. 61:5001-5007(1993)
Purity: Greater than 90% as determined by SDS-PAGE.
Storage: The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20℃/-80℃. The shelf life of lyophilized form is 12 months at -20℃/-80℃.
Notes: Repeated freezing and thawing is not recommended. Store working aliquots at 4℃ for up to one week.