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Key Documents

L4040

Sigma-Aldrich

Lactoferrin human

recombinant, expressed in rice, Partially iron saturated, ≥90% (SDS-PAGE)

Synonym(s):

Growth-inhibiting protein 12, Lactotransferrin, Talalactoferrin

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About This Item

MDL number:
UNSPSC Code:
12352202
NACRES:
NA.61

biological source

human

recombinant

expressed in rice

Assay

≥70% protein basis (Bradford)
≥90% (SDS-PAGE)

form

powder

technique(s)

microbiological culture: suitable

solubility

H2O: soluble 10 mg/mL

UniProt accession no.

storage temp.

2-8°C

Gene Information

human ... LTF(4057)

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Application

Lactoferrin was used to grow Streptococcus mutans in an iron-limiting medium. It was used to test if lactoferrin impedes epithelial cell adhesion in vitro. It was also used to test the diagnostic value of blood cytokine concentrations in acute pneumonia.

Biochem/physiol Actions

Lactoferrin is an iron binding protein. It is structurally similar to transferrin, the plasma iron transport protein; but lactoferrin has a much higher affinity for iron (250 fold). It is very abundant in colostrum and small amounts can also be found in tears, saliva, mucous secretions and in the secondary granules of neutrophils. It is made by mucosal epithelium and neutrophils and is released by these cells in response to inflammatory stimuli. Bacterial growth is inhibited by its ability to sequester iron and also permeabilize bacterial cell walls by binding to lipopolysaccharides through its N-terminus. Lactoferrin can inhibit viral infection by binding tightly to the viral envelope protein. This prevents cell-virus fusion by blocking the binding domain. Lactoferrin appears to activate host defense systems in part by stimulating the release of interleukin-8, a neutrophil activator. It may also be involved in antibody and interleukin synthesis, lymphocyte proliferation and complement activation.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Qingsheng Kong et al.
Molecular and cellular biochemistry, 406(1-2), 293-299 (2015-05-20)
The metalloprotease lethal factor (LF) from Bacillus anthracis plays a vital role in anthrax toxin action, and thus becomes a target for anti-anthrax therapy. Following the guidelines based on existing metalloprotease inhibitors, we designed a 'first-generation' LF inhibitor R9LF-1. This
P Kragsbjerg et al.
Thorax, 50(12), 1253-1257 (1995-12-01)
The role of cytokines in the pathogenesis of pneumonia is still poorly understood. In a previous study the diagnostic value of measuring blood concentrations of interleukin 6 and interferon gamma was established. In the present study the value of blood
Snehal Kadam et al.
Biofilm, 3, 100047-100047 (2021-04-30)
Bacterial biofilms are a major cause of delayed wound healing. Consequently, the study of wound biofilms, particularly in host-relevant conditions, has gained importance. Most in vitro studies employ refined laboratory media to study biofilms, representing conditions that are not relevant
Zhongnan Xiao et al.
Redox biology, 50, 102256-102256 (2022-02-09)
Diabetic hyperglycemia aggravates the prognosis of intracerebral hemorrhagic stroke (ICH) in the clinic. In addition to hematoma expansion and increased inflammation, how diabetic hyperglycemia affects the outcomes of ICH is still unclear. We found that streptozotocin-induced diabetic hyperglycemia not only
Growth of Streptococcus mutans in an iron-limiting medium.
Grace A. Spatafora, Meagan W. Moore
Methods in Cell Science : An Official Journal of the Society for In Vitro Biology, 20, 217-221 (1998)

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