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Recombinant Human BD-4 貨號:300-65 細(xì)胞因子

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Recombinant Human BD-4 貨號:300-65 細(xì)胞因子
細(xì)胞因子(cytokine,CK)是一類能在細(xì)胞間傳遞信息、具有免疫調(diào)節(jié)和效應(yīng)功能的蛋白質(zhì)或小分子多肽。
作用特點：多效性、重疊性、協(xié)同性、拮抗性和雙重性。

詳細(xì)介紹

Recombinant Human BD-4 貨號:300-65 細(xì)胞因子

 

細(xì)胞因子受體的結(jié)構(gòu)和分類:根據(jù)細(xì)胞因子受體cDNA序列以及受體胞膜外區(qū)氨基酸序列的同源性和結(jié)構(gòu)征，可將細(xì)胞因子受體主要分為四種類型：免疫球蛋白超家族（IGSF）、造血細(xì)胞因子受體超家族、神經(jīng)生長因子受體超家族和趨化因子受體。

 

Catalog Number:
300-65
Synonyms:
Beta-defensin 104, BEFB4
Description:
Defensins （alpha and beta） are cationic peptides with a broad spectrum of antimicrobial activity that comprise an important arm of the innate immune system. The α-defensins are distinguished from the β-defensins by the pairing of their three disulfide bonds. To date, six human β-defensins have been identified; BD-1, BD-2, BD-3, BD-4, BD-5 and BD-6. β-defensins are expressed on some leukocytes and at epithelial surfaces.  In addition to their direct antimicrobial activities, they can act as chemoattractants towards immature dendritic cells and memory T cells.  The β-defensin proteins are expressed as the C-terminal portion of precursors and are released by proteolytic cleavage of a signal sequence and in some cases, a propeptide sequence. β-defensins contain a six-cysteine motif that forms three intra-molecular disulfide bonds.   BD-4 is expressed in testis, stomach, uterus, neutrophils, thyroid, lung and kidney.  In addition to its direct antimicrobial activities, BD-4 is chemoattractant towards human blood monocytes.  Recombinant human BD-4 is a 6.0 kDa protein containing 50 amino acid residues.
AA Sequence:
EFELDRICGY GTARCRKKCR SQEYRIGRCP NTYACCLRKW DESLLNRTKP
Source:
E.coli
Purity:
Greater than 98% by SDS-PAGE gel and HPLC analyses.
Biological Activity:
Determined by its ability to chemoattract human monocytes using a concentration range of 0.1-100.0 ng/ml.
 
 
 
 
 
 
Country of Origin:
USA


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