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文件

安全信息

L3770

Sigma-Aldrich

乳铁蛋白 来源于人奶

Iron saturated, ≥85% (SDS-PAGE)

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MDL编号:
NACRES:
NA.61

生物来源

human milk

质量水平

检测方案

≥85% (SDS-PAGE)

形式

powder

分子量

82.4 kDa

铁含量

0.15-1.0%

technique(s)

microbiological culture: suitable

溶解性

phosphate buffer: 10 mg/mL at 25 °C (0.01 M phosphate buffer, 0.0027 M potassium chloride and 0.137 M sodium chloride, pH 7.4)

UniProt登记号

储存温度

2-8°C

InChI

1S/C35H53N9O12/c1-16(2)27(43-33(53)23(14-26(47)48)41-25(46)15-38-29(49)18(5)39-31(51)21(36)13-24(37)45)34(54)40-19(6)30(50)42-22(12-20-10-8-7-9-11-20)32(52)44-28(17(3)4)35(55)56/h7-11,16-19,21-23,27-28H,12-15,36H2,1-6H3,(H2,37,45)(H,38,49)(H,39,51)(H,40,54)(H,41,46)(H,42,50)(H,43,53)(H,44,52)(H,47,48)(H,55,56)/t18-,19-,21-,22-,23-,27-,28-/m0/s1

InChI key

QCBUWCQOKPLTDZ-PKRULZLPSA-N

Gene Information

human ... LTF(4057)

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应用

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.

生化/生理作用

乳铁蛋白是一种铁结合蛋白。在结构上与血浆铁转运蛋白转铁蛋白相似;但是乳铁蛋白对铁的亲和力要高得多(250 倍)。在初乳中含量非常丰富,少量也可见于泪液、唾液、粘液分泌物和中性粒细胞的次级颗粒中。由粘膜上皮和中性粒细胞组成,在炎症刺激下由这些细胞释放。细菌的生长被其隔离铁的能力所抑制,也通过其 N 端与脂多糖结合使细菌细胞壁通透性增加。乳铁蛋白可以通过与病毒包膜蛋白紧密结合来抑制病毒感染。它通过阻断结合域阻止了细胞与病毒的融合。乳铁蛋白似乎部分通过刺激中性粒细胞激活剂白细胞介素-8 的释放来激活宿主防御系统。还可能参与抗体和白细胞介素合成、淋巴细胞增殖和补体激活。

法规信息

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Cécile Frolet et al.
BMC microbiology, 10, 190-190 (2010-07-14)
Streptococcus pneumoniae is a widely distributed commensal Gram-positive bacteria of the upper respiratory tract. Pneumococcal colonization can progress to invasive disease, and thus become lethal, reason why antibiotics and vaccines are designed to limit the dramatic effects of the bacteria
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
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)
M T Pöllänen et al.
Journal of periodontal research, 33(1), 8-16 (1998-04-03)
In the process of host defence against microbial challenge, neutrophils release granule contents with the potential side effect of damaging structural tissues. In the junctional epithelium such damage may contribute to the degeneration and renewal of the epithelial cells attached
Kathryn A Patras et al.
Journal of innate immunity, 11(6), 481-495 (2019-05-06)
Urinary tract infection (UTI) is a prominent global health care burden. Although UTI is readily treated with antibiotics in healthy adults, complicated cases in immune-compromised individuals and the emerging antibiotic resistance of several uropathogens have accelerated the need for new

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