抗体的生物素化标记实验要点：

1. 细胞衰老相关蛋白1抗体规格 如在反应混合液中有叠氮钠或游离氨基存在,会抑制标记反应。因此,蛋白质在反应前要对 0.1mol/L碳酸氢钠缓冲液或0.5mol/L硼酸缓冲液充分透析；

2.所用的NHSB及待生物素化蛋白质之间的分子比按蛋白质表面的ε-氨基的密度会有所不同,选择不当则影响标记的效率,应先用几个不同的分子比来筛选最适条件；

3.用NHSB量过量也是不利的,抗原的结合位点可能因此被封闭,导致抗体失活；

4.由于抗体的氨基不易接近可能造成生物素化不足,此时可加入去污剂如 Triton x-100, Tween20等；

5.当游离ε-氨基(赖氨酸残基的氨基)存在于抗体的抗原结合位点时,或位于酶的催化位点时,生物素化会降低或损伤抗体蛋白的结合力或活性；

6.生物素还可能与不同的功能基团,如羰基、氨基、巯基、异咪唑基及苯酚基,也可与糖基共价结合；

7.交联反应后,应充分透析,否则,残余的生物素会对生物素化抗体与亲和素的结合产生竞争作用；

8.在细胞的荧光标记实验中,中和亲和素的本底低,但由于链霉亲和素含有少量正电荷,故对某些细胞可导致高本底。

产品订购信息：
英文名称  Anti-SEN1/Mortality factor 4-like protein 1 

中文名称   细胞衰老相关蛋白1抗体规格 

别    名  Cell senescence related gene complementation group B; Cellular senescence related protein 1; CSR; CSRB; MORF 4; MORF4; MORF4 protein; Mortality factor 4; SEN 1; SEN; Senescence (cellular) related 1; Senescence related cellular 1; Transcription factor like protein MORF4; MO4L1_HUMAN; Mortality factor 4-like protein 1; MORF-related gene 15 protein; Protein MSL3-1; Transcription factor-like protein MRG15.

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, Cow, Zebrafish 

产品类型   一抗  

研究领域    细胞生物 细胞凋亡 转录调节因子 表观遗传学

蛋白分子量  predicted molecular weight: 27kDa

性    状   Lyophilized or Liquid

免 疫 原 KLH conjugated synthetic peptide derived from human Mortality factor 4-like protein 1 

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

细胞衰老相关蛋白1抗体规格 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 Cellular senescence, the terminal nondividing state that normal cells enter following completion of their proliferative potential, is the dominant phenotype in hybrids of normal and immortal cells. Fusions of immortal human cell lines with each other have led to their assignment to one of several complementation groups. SEN1 or MORF4 is a gene on chromosome 4 that induces a senescent-like phenotype in cell lines assigned to complementation group B. It is capable of reversing the immortal phenotype of a subset of immortal cells. Overexpression of SEN1 in HeLa cells ultimately caused abnormal nuclear morphology and cell death.

Function : Component of the NuA4 histone acetyltransferase (HAT) complex which is involved in transcriptional activation of select genes principally by acetylation of nucleosomal histones H4 and H2A. This modification may both alter nucleosome - DNA interactions and promote interaction of the modified histones with other proteins which positively regulate transcription. This complex may be required for the activation of transcriptional programs associated with oncogene and proto-oncogene mediated growth induction, tumor suppressor mediated growth arrest and replicative senescence, apoptosis, and DNA repair. The NuA4 complex ATPase and helicase activities seem to be, at least in part, contributed by the association of RUVBL1 and RUVBL2 with EP400. NuA4 may also play a direct role in DNA repair when directly recruited to sites of DNA damage. Also component of the mSin3A complex which acts to repress transcription by deacetylation of nucleosomal histones. Required for homologous recombination repair (HRR) and resistance to mitomycin C (MMC). Involved in the localization of PALB2, BRCA2 and RAD51, but not BRCA1, to DNA-damage foci.

Subunit : Component of the NuA4 histone acetyltransferase complex which contains the catalytic subunit KAT5/TIP60 and the subunits EP400, TRRAP/PAF400, BRD8/SMAP, EPC1, DMAP1/DNMAP1, RUVBL1/TIP49, RUVBL2, ING3, actin, ACTL6A/BAF53A, MORF4L1/MRG15, MORF4L2/MRGX, MRGBP, YEATS4/GAS41, VPS72/YL1 and MEAF6. The NuA4 complex interacts with MYC and the adenovirus E1A protein. MORF4L1 may also participate in the formation of NuA4 related complexes which lack the KAT5/TIP60 catalytic subunit, but which include the SWI/SNF related protein SRCAP. Component of the mSin3A histone deacetylase complex, which includes SIN3A, HDAC2, ARID4B, MORF4L1, RBBP4/RbAp48, and RBBP7/RbAp46. Interacts with RB1 and KAT8. May also interact with PHF12 and one or more as yet undefined members of the TLE (transducin-like enhancer of split) family of transcriptional repressors. Interacts with the N-terminus of MRFAP1. Found in a complex composed of MORF4L1, MRFAP1 and RB1. Interacts with the entire BRCA complex, which contains BRCA1, PALB2, BRCA2 and RAD51. Interacts with PALB2.

Subcellular Location : Nucleus.

Similarity : Contains 1 MRG domain.

Database links : UniProtKB/Swiss-Prot: Q9UBU8.2

NCBI Reference Sequence: NP_006783.2

抗体的鉴定：

1）细胞衰老相关蛋白1抗体规格 抗体的效价鉴定：不管是用于诊断还是用于,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。

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甘露醇化琼脂培养基24020250g用于金黄色葡萄球菌的选择性分离培养和计数(《中华人民共和国药典》20。

LB Broth Agar 培养基 250g incubation media LB Broth Agar 培养基 250g

亚黄八叠球菌 支/瓶

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ModifiedFreyMedium

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乳糖莫能霉素葡萄糖醛酸琼脂LMG250g/瓶用于大肠菌群滤膜法检测incubationmedia乳糖莫能霉素葡萄糖醛酸琼脂LMG250g/瓶用于大肠菌群滤膜法检测

哥伦比亚血琼脂平板(9cm) 10个/包 用于营养要求高细菌的分离、培养和溶血试验

CL-0191RBE(人细胞)5×106cells/瓶×2

CA1 Others Human 人 CA1 人细胞裂解液 (阳性对照)

小鼠肠平滑肌细胞完全培养基 100mL

MS1小鼠胰岛内皮细胞 MS1 mouse islet endothelial cells DMEM培养基+5%FBS

CLCF1 Protein Human 重组人 N1 / CLCF1 / CLC 蛋白 (Fc 标签)

RAG(小鼠肾腺癌细胞) 5×106cells/瓶×2 H08910(细胞)

细胞衰老相关蛋白1抗体规格CL-0188QGY-7701(人细胞)5×106cells/瓶×2

TSPAN1 Others Human 人 TSPAN1 (aa 110-211) 人细胞裂解液 (阳性对照)

人脐平滑肌细胞裂解物HUVSMCL

MB-271细胞，人癌细胞 中国仓鼠肾细胞(二氢叶酸还原酶缺陷型),CHO/dhFr-细胞 角膜上皮细胞Many types of cells包装：5 × 105次方(1ml)

AML-193(人急性单核细胞单核细胞) 5×106cells/瓶×2

NHEM.f Pellet 正常人表皮黑素细胞团块(少年者) > 1 mio.cells 人肠平滑肌细胞裂解物HISMCL