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Recombinant Human Extracellular glycoprotein lacritin (LACRT)

  • 中文名稱:
    人LACRT重組蛋白
  • 貨號:
    CSB-YP887939HU
  • 說明書:
  • 規格:
  • 來源:
    Yeast
  • 其他:
  • 中文名稱:
    人LACRT重組蛋白
  • 貨號:
    CSB-EP887939HU
  • 說明書:
  • 規格:
  • 來源:
    E.coli
  • 其他:
  • 中文名稱:
    人LACRT重組蛋白
  • 貨號:
    CSB-EP887939HU-B
  • 說明書:
  • 規格:
  • 來源:
    E.coli
  • 共軛:
    Avi-tag Biotinylated

    E. coli biotin ligase (BirA) is highly specific in covalently attaching biotin to the 15 amino acid AviTag peptide. This recombinant protein was biotinylated in vivo by AviTag-BirA technology, which method is BriA catalyzes amide linkage between the biotin and the specific lysine of the AviTag.

  • 其他:
  • 中文名稱:
    人LACRT重組蛋白
  • 貨號:
    CSB-BP887939HU
  • 說明書:
  • 規格:
  • 來源:
    Baculovirus
  • 其他:
  • 中文名稱:
    人LACRT重組蛋白
  • 貨號:
    CSB-MP887939HU
  • 說明書:
  • 規格:
  • 來源:
    Mammalian cell
  • 其他:

產品詳情

  • 純度:
    >85% (SDS-PAGE)
  • 基因名:
    LACRT
  • Uniprot No.:
  • 別名:
    LACRTExtracellular glycoprotein lacritin
  • 種屬:
    Homo sapiens (Human)
  • 蛋白長度:
    Extracellular domain
  • 表達區域:
    20-138
  • 氨基酸序列
    E DASSDSTGAD PAQEAGTSKP NEEISGPAEP ASPPETTTTA QETSAAAVQG TAKVTSSRQE LNPLKSIVEK SILLTEQALA KAGKGMHGGV PGGKQFIENG SEFAQKLLKK FSLLKPWA
  • 蛋白標簽:
    Tag?type?will?be?determined?during?the?manufacturing?process.
    The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
  • 產品提供形式:
    Lyophilized powder
    Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
  • 復溶:
    We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
  • 儲存條件:
    Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
  • 保質期:
    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°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
  • 貨期:
    Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
    Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
  • 注意事項:
    Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
  • Datasheet :
    Please contact us to get it.

產品評價

靶點詳情

  • 功能:
    Modulates secretion by lacrimal acinar cells.
  • 基因功能參考文獻:
    1. Data show increased levels of lysozyme C (LYZ), lacritin (LACRT) and zinc-alpha-2 glycoprotein 1 (AZGP1) in pooled tear fluid sample from Graves' disease (GD) patients with moderate-to-severe Graves' orbitopathy (GO) compared with GD patients without clinical signs of GO. PMID: 28419103
    2. cytoprotective effect of lacritin is mediated through Cyclooxygenase-2 (COX-2). PMID: 26670139
    3. the C terminus of lacritin is multifunctional by dose and proteolytic processing and appears to play a key role in the innate protection of the eye PMID: 24942736
    4. Lacritin is a component of vampire bat saliva, as detected by mass spectrometry. PMID: 23748026
    5. Study involving 129 dry eye disease patients and 73 healthy controls, revealing significantly less tear lacritin in 95% of patients. Lacritin was one of seven proteins downregulated PMID: 23272196
    6. iTRAQ analysis suggests that lacritin is selectively deficient in tears of patients with aqueous deficient dry eye. PMID: 22736608
    7. Horse lacritin is 45% identical to human, and shares a predicted amphipathic alpha helix important for cell targeting. PMID: 22871838
    8. A direct ELISA was established to estimate lacritin levels in tears. An ELISA estimate of 4.2 ng lacritin per 100 ng total tear protein did not vary significantly among individuals of different ages (18 - 52 years), or gender. PMID: 22918641
    9. Lacritin mRNA is the 24st most abundant in the lacrimal gland of Wolfring. Lacritin protein is detected by immunofluorescence. PMID: 22956620
    10. Lacritin is 10-fold less in tears from individuals suffering from fungal keratitis, and is barely detectable in the initial stage of infection by Fusarium solani. Fungal keratitis accounts for half of all corneal ulcers in Africa and India. PMID: 23308132
    11. Genomic analysis expands the number of predicted lacritin orthologs, and suggests that secondary structure may be largely conserved. All currently known tear proteins predicted to be extracellular by GEO are assembled, and functions summarized. PMID: 23769845
    12. Tissue transglutaminase promotes crosslinking of lacritin between K82 or K85 and Q106 - the latter residing in the SDC1 binding domain of lacritin necessary for cell targeting, thus inactivating lacritin. Tissue transglutaminase is thought to be upregulated in dry eye, the most common eye disease. PMID: 23425695
    13. Lacritin rapidly and transiently accelerates autophagy to rid stressed cells of aggregated proteins. Lacritin also restores oxidative phosphorylation. LC3-II, in the absence of autophagic inhibitor, decreases as a consequence of rapidly increased flux. PMID: 23640897
    14. Lacritin stimulates tear protein secretion from lacrimal acinar cells stressed with inflammatory cytokines, however under the same conditions carbachol is completely ineffective. Inflammatory cytokines are elevated in dry eye, the most common eye disease. The implication is that topical lacritin might be an effective therapeutic for dry eye. PMID: 23482462
    15. Targeting of heparanase-modified syndecan-1 by prosecretory mitogen lacritin requires conserved core GAGAL plus heparan and chondroitin sulfate as a novel hybrid binding site that enhances selectivity. PMID: 23504321
    16. Lacritin protein yields were improved primarily by hydrophobic or salt bridge mutagenesis and less so by elimination of rare codons. PMID: 23422824
    17. Monkey lacrimal acinar cells release lacritin upon carbachol stimulation. Pro-secretory signaling involves PKC and calcium, but not MAPK. PMID: 20375347
    18. Lacritin was detected in monkey tear fluid. Among monkey ocular tissues, lacritin mRNA is highly expressed highly in lacrimal gland, somewhat less so in conjunctiva and meibomian gland, and slightly in corneal epithelium. PMID: 17850790
    19. Lacritin from tears is deposited on all contact lenses tested, and one of 19 tear proteins identified. PMID: 18334948
    20. In tears of patients with climatic droplet keratopathy, N-linked glycosylation of lacritin is decreased, although the quantity of lacritin is unaltered. PMID: 19714880
    21. Lacritin was found to be decreased in tears of patients with contact lens related dry eye. PMID: 19770725
    22. Lacritin gene maps near but not within triple A syndome region. Alacrimia in triple a syndrome not due to mutation in lacritin gene. PMID: 12613904
    23. expressed in human breast tumors, breast cancer cell lines, and normal breast PMID: 14574570
    24. Lacritin is one of nine tear proteins downregulated in patients suffering from blepharitis, or inflammation of the eyelid often associated with dry eye. PMID: 15952718
    25. Lacritin is detected by MS in meibomian gland secretions. PMID: 16488965
    26. Lacritin is detected in human tears by mass spectometry from patients with pterygium. PMID: 16865190
    27. Heparanase cleavage of SDC1 heparan sulfate chains is required for lacritin binding. This mechanism therefore forms a novel off/on switch for lacritin-dependent mitogenesis. PMID: 16982797
    28. Lacritin binds a form of SDC1 that lacks or contains short heparan sulfate chains, as revealed by gel filtration of chemically cleaved chains. Also by binding studies with FGF2 purified SDC1 with or without heparitinase digestion. PMID: 16982797
    29. Lacritin binds human SDC1, but not human SDC2 or SDC4. Lacritin C-5, C-10, N-15, N-24, but not C-25 binds SDC1. C-15 weakly binds. Thus the C-terminal mitogenic and SDC1 binding domains appear to be the same. PMID: 16982797
    30. Lacritin mitogenesis and COX2 expression is abrogated when SDC1 (but not SDC2) is depleted by siRNA. Similarly siRNA depletion of HPSE1 (but not HPSE2) knocks out lacritin mitogenesis and can be rescued by exogenous HPSE1. PMID: 16982797
    31. Lacritin calcium signaling is inhibited by pertussis toxin, U73122 and Go 6976. PMID: 16923831
    32. Lacritin displays restricted cell target specificity in a screen of 17 different cell types. It targets rat lacrimal acinar, human corneal epithelial (HCE-T), human salivary ductal (HSG) and human embryonal kidney cells (HEK293). PMID: 16923831
    33. Lacritin signaling drives the formation of a Golgi PKCalpha/PLD1/PLCgamma2 complex. PMID: 16923831
    34. Lacritin-dependent mitogenesis is abrogated by siRNA depletion of NFATC1, mTOR and STIM1, but not TRPC1. Also cyclosporin and rapamycin inhibit. This same pattern is observed in affect on lacritin-stimulated COX2 mRNA expression. PMID: 16923831
    35. Lacritin's C-terminus is required for mitogenesis. C-10 is fully active, C-15 has approximately half the activity and C-20 is inactive. PMID: 16923831
    36. Lacritin's signaling and mitogenic responses are biphasic (1- 10 nM dose optimum). Its biphasic signaling includes rapid PKCalpha dephosphorylation, and PLD1, calcineurin and NFATC1 activation. PMID: 16923831
    37. Lacritin binds several basment membrane components (collagen IV, nidogen, fibronectin, laminin-1). Also vitronectin, but not collagen I or heparin. Yet it is secreted apically and possibly may form non-covalent complexes with tear fibronectin. PMID: 11419941
    38. Lacritin is detected in human tears and promotes tear secretion in vitro when added to rat lacrimal acinar cells via a pathway apparently independent of the M3 receptor. It is mitogenic at low ng/ml levels for salivary ductal cells. PMID: 11419941
    39. Tissue microarray of seventy-five different human tissues, including mammary gland, detected expression only in lacrimal acinar and salivary ductal cells. Thyroid immunostaining was equivocal. These data agree with Clonetech RNA dot blot analysis. PMID: 11419941
    40. Lacritin is the sixth most common transcript in the human lacrimal gland based on EST sequencing, and is one of twenty-nine 'lacrimal preferred' genes. PMID: 15851553

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  • 亞細胞定位:
    Secreted.
  • 組織特異性:
    Expressed in secretory granules of many acinar cells in lacrimal gland and in scattered acinar cells of salivary glands.
  • 數據庫鏈接:

    HGNC: 16430

    OMIM: 607360

    KEGG: hsa:90070

    STRING: 9606.ENSP00000257867

    UniGene: Hs.307096



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