公司专业供应的抗体，抗体是用于化学反应、分析化验、研究实验、教学实验、化学配方使用的纯净化学品，产品品质卓越，价格实惠，多种规格供应，售后完善。
英文名称  Anti-Laminin 5 
中文名称  层粘连蛋白5(laminin γ2)抗体说明书 
别    名  EBR2A; Laminin subunit gamma 2; Epiligrin 170 kDa subunit; Epiligrin subunit alpha; Kalinin B1 chain; Kalinin subunit alpha; LAMA 3; LAMA3; LAMA3_HUMAN; Lama3a; LAMB 3; LAMB2T; LAMB3; LAMC2; Laminin gamma 2; Laminin 5 alpha 3 chain; Laminin 5 beta 3; Laminin 5 gamma 2 subuni; Laminin alpha 3; Laminin beta 3; Laminin beta 3 chain; Laminin gamma 2 chain; Laminin subunit alpha-3; Laminin subunit beta 3; Laminin subunit gamma 2; Laminin-5 subunit alpha; Laminin-6 subunit alpha; Laminin-7 subunit alpha; Laminin5; LAMNA; LAMNB1; LAMNB2; LOCS; Nicein subunit alpha; BM600; E170. 
浓    度  1mg/1ml 
规 格  0.2ml/200μg     
抗体来源  Rabbit  
克隆类型  polyclonal 
交叉反应  Human, Mouse, Rat, Dog, Pig, Cow, Horse, Rabbit
产品类型  一抗    
研究领域  肿瘤 心血管 细胞生物 免疫学 神经生物学 信号转导 细胞粘附分子 细胞骨架 细胞外基质  
蛋白分子量  predicted molecular weight: 367kDa 
性    状  Lyophilized or Liquid 
免 疫 原  KLH conjugated synthetic peptide derived from human Laminin 5 
亚    型  IgG 
纯化方法  affinity purified by Protein A 
储 存 液  Preservative: 15mM Sodium Azide, Constituents: 1% BSA, 0.01M PBS, pH 7.4 
产品应用   WB=1:100-500  ELISA=1:500-1000  IP=1:20-100  IHC-P=1:100-500  IHC-F=1:100-500  IF=1:100-500 
（石蜡切片需做抗原修复） 
 not yet tested in other applications.
 optimal dilutions/concentrations should be determined by the end user.  
保存条件  Store at -20 °C for one year. Avoid repeated freeze/thaw cycles. The lyophilized antibody is stable at room temperature for at least one month and for greater than a year when kept at -20°C. When reconstituted in sterile pH 7.4 0.01M PBS or diluent of antibody the antibody is stable for at least two weeks at 2-4 °C. 
Important Note  This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications. 
产品介绍 Binding to cells via a high affinity receptor, laminin is thought to mediate the attachment, migration and organization of cells into tissues during embryonic development by interacting with other extracellular matrix components. Laminin-5 is thought to be involved in (1) cell adhesion via integrin alpha-3/beta-1 in focal adhesion and integrin alpha-6/beta-4 in hemidesmosomes, (2) signal transduction via tyrosine phosphorylation of pp125-FAK and p80, (3) differentiation of keratinocytes.
Tissue specificity; Skin; respiratory, urinary, and digestive epithelia and in other specialized tissues with prominent secretory or protective functions. Epithelial basement membrane, and epithelial cell tongue that migrates into a wound bed. A differential and focal expression of the subunit alpha-3 is observed in the CNS.
Function : Binding to cells via a high affinity receptor, laminin is thought to mediate the attachment, migration and organization of cells into tissues during embryonic development by interacting with other extracellular matrix components.
Laminin-5 is thought to be involved in (1) cell adhesion via integrin alpha-3/beta-1 in focal adhesion and integrin alpha-6/beta-4 in hemidesmosomes, (2) signal transduction via tyrosine phosphorylation of pp125-FAK and p80, (3) differentiation of keratinocytes. 
Subunit : Laminin is a complex glycoprotein, consisting of three different polypeptide chains (alpha, beta, gamma), which are bound to each other by disulfide bonds into a cross-shaped molecule comprising one long and three short arms with globules at each end. Alpha-3 is a subunit of laminin-5 (laminin-332 or epiligrin/kalinin/nicein), laminin-6 (laminin-311 or K-laminin) and laminin-7 (laminin-321 or KS-laminin).
Subcellular Location : Secreted, extracellular space, extracellular matrix, basement membrane.
Tissue Specificity : Skin; respiratory, urinary, and digestive epithelia and in other specialized tissues with prominent secretory or protective functions. Epithelial basement membrane, and epithelial cell tongue that migrates into a wound bed. A differential and focal expression of the subunit alpha-3 is observed in the CNS.
DISEASE : Defects in LAMA3 are a cause of epidermolysis bullosa junctional Herlitz type (H-JEB) [MIM:226700]; also known as junctional epidermolysis bullosa Herlitz-Pearson type. JEB defines a group of blistering skin diseases characterized by tissue separation which occurs within the dermo-epidermal basement membrane. H-JEB is a severe, infantile and lethal form. Death occurs usually within the first six months of life. Occasionally, children survive to teens. H-JEB is marked by bullous lesions at birth and extensive denudation of skin and mucous membranes that may be hemorrhagic. 
Defects in LAMA3 are the cause of laryngoonychocutaneous syndrome (LOCS) [MIM:245660]. LOCS is an autosomal recessive epithelial disorder confined to the Punjabi Muslim population. The condition is characterized by cutaneous erosions, nail dystrophy and exuberant vascular granulation tissue in certain epithelia, especially conjunctiva and larynx. 
Similarity : Contains 15 laminin EGF-like domains.
Contains 5 laminin G-like domains.
Contains 1 laminin IV type A domain.
Contains 1 laminin N-terminal domain.
Database links : UniProtKB/Swiss-Prot: Q16787.2
实验流程：

实验原理 :
（1）特异性结合抗原：抗体本身不能直接溶解或杀伤带有特异抗原的靶细胞，通常需要补体或吞噬细胞等共同发挥效应以清除病原微生物或导致病理损伤。然而，抗体可通过与病毒或毒素的特异性结合，直接发挥中和病毒的作用。
（2）活补体：IgM、IgG1、IgG2和IgG3可通过经典途径激活补体，凝聚的IgA、IgG4和IgE可通过替代途径激活补体。
（3）结合细胞：不同类别的免疫球蛋白，可结合不同种的细胞，参与免疫应答。
（4）可通过胎盘及粘膜：免疫球蛋白G（IgG）能通过胎盘进入胎儿血流中，使胎儿形成自然被动
免疫。免疫球蛋白A（IgA）可通过消化道及呼吸道粘膜，是粘膜局部抗感染免疫的主要因素。
（5）具有抗原性：抗体分子是一种蛋白质，也具有刺机体产生免疫应答的性能。不同的免疫球蛋白分子，各具有不同的抗原性。
（6）抗体对理化因子的抵抗力与一般球蛋白相同：不耐热，60～70℃即被破坏。各种酶及能使蛋白质凝固变性的物质，均能破坏抗体的作用。抗体可被中性盐类沉淀。在生产上常可用硫酸铵或硫酸钠从免疫血清中沉淀出含有抗体的球蛋白，再经透析法将其纯化。
抗体的鉴定：
1）抗体的效价鉴定：不管是用于诊断还是用于治疗,制备抗体的目的都是要求较高效价。不同的抗原制备的抗体,要求的效价不一。鉴定效价的方法很多,包括有试管凝集反应,琼脂扩散试验,酶联免疫吸附试验等。常用的抗原所制备的抗体一般都有约成的鉴定效价的方法,以资比较。如制备抗抗体的效价,一般就采用琼脂扩散试验来鉴定。
2）抗体的特异性鉴定：抗体的特异性是指与相应抗原或近似抗原物质的识别能力。抗体的特异性高,它的识别能力就强。衡量特异性通常以交叉反应率来表示。交叉反应率可用竞争抑制试验测定。以不同浓度抗原和近似抗原分别做竞争抑制曲线,计算各自的结合率,求出各自在IC50时的浓度,并按公式计算交叉反应率。 
如果所用抗原浓度IC50浓度为pg/管,而一些近似抗原物质的IC50浓度几乎是无穷大时,表示这一抗血清与其他抗原物质的交叉反应率近似为0,即该血清的特异性较好。
3）抗体亲和力：是指抗体和抗原结合的牢固程度。亲和力的高低是由抗原分子的大小,抗体分子的结合位点与抗原决定簇之间立体构型的合适度决定的。有助于维持抗原抗体复合物稳定的分子间力有氢键,疏水键,侧链相反电荷基因的库仑力,范德华力和空间斥力。亲和力常以亲和常数K表示,K的单位是L/mol。抗体亲和力的测定对抗体的筛选,确定抗体的用途,验证抗体的均一性等均有重要意义。 抗体的制备过程：
1. 免疫原的制备
普通的大分子蛋白，通过分子克隆构建载体并在大肠杆菌中进行诱导表达获得重组蛋白，纯化鉴定后可直接作为免疫原。
小分子蛋白或化合物等分子量小，需要偶联载体对该分子进行改造才能使其成为具有免疫原性的抗原，常见偶联载体如BSA、OVA、HAS等。
2. 免疫动物
常用于制备抗血清的动物有豚鼠、家兔、鸡、大小鼠等，大量生产时需要用到狗、绵羊、山羊等。
3. 免疫血清的收集
一般家兔、绵羊、山羊可采用静动脉采血，家兔、豚鼠、大鼠、鸡可采用心脏采血，家兔、山羊、绵羊可采用静脉采血。
4. 免疫血清的纯化与鉴定
得到的抗血清需要进一步的纯化，利用偶联了抗原的亲和柱进行层析，具有高效，特异性强，纯度高的特定。接着要鉴定纯化蛋白的含量、相对分子的质量、纯度以及特异性。
5. 免疫血清的保存
建议将抗体分装后进行保存。抗体一般比较稳定，在-80℃ ～-20 ℃可以保存约5年而不会影响效价，而真空干燥保存时间可以更久。保存前需经除菌并添加防腐剂。