phospho-Rb (Ser249)抗体特异性结合抗原：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**病原微生物或导致病理损伤。然而，抗体可通过与病毒或**的特异性结合，直接发挥中和病毒的作用。
产品编号xy- 3558R
英文名称phospho-Rb (Ser249)
中文名称磷酸化视网膜母细胞瘤相关蛋白1抗体
别 名RB1(phospho S249); Rb (phospho-Ser249); Rb (phospho Ser249); Rb (phospho S249); p-Rb (Ser249); OSRC; P105 RB; p105-Rb; P105RB; PP105; PP110; pRb; RB 1; RB1; RB1 protein; Retinoblastoma 1 (including osteosarcoma); Retinoblastoma 1; Retinoblastoma associated protein; Including osteosarcoma; Osteosarcoma; p105-Rb; Rb; RB_HUMAN; Retinoblastoma suspectibility protein; Retinoblastoma-associated protein; Retinoblastoma related osteosarcoma; Retinoblastoma susceptibility gene; Including osteosarcoma.
说 明 书100ul
产品类型磷酸化抗体
研究领域肿瘤 细胞生物 **学 染色质和核信号 表观遗传学
抗体来源Rabbit
克隆类型Polyclonal
phospho-Rb (Ser249)抗体交叉反应 Human, Mouse, Rat, Dog, Pig, Cow, Horse, Rabbit,
产品应用WB=1:500-2000 ELISA=1:500-1000 IHC-P=1:400-800 IHC-F=1:400-800 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.
分 子 量106kDa
细胞定位细胞核
性 状Lyophilized or Liquid
浓 度1mg/1ml
免 疫 原KLH conjugated Synthesised phosphopeptide derived from human Rb around the phosphorylation site of Ser249:NG(p-S)PR
亚 型IgG
纯化方法affinity purified by Protein A
储 存 液0.01M TBS(pH7.4) with 1% BSA, 0.03% Proclin300 and 50% Glycerol.
phospho-Rb (Ser249)抗体保存条件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.
PubMedPubMed
产品介绍background:
Rb is a tumor suppressor gene which functions as a negative regulator of the cell cycle by interacting with transcription factors including E2F1, PU1, ATF2, UBF, Elf1 and cAbl. This ability of Rb to alter transcription is regulated by phosphorylation catalyzed by the cyclin dependent protein kinases (cdks). Rb is phosphorylated on serine and threonine, but not on tyrosine residues. It forms a complex with SV40 large T antigen, adenovirus E1A, and human papilloma virus 16E. Rb protein may act by regulating transcription and loss of its function leads to uncontrolled cell growth. Aberrations in the Rb gene have been implicated in cancers of breast, colon, prostate, kidney, nasopharynx, and leukemia.
Function:
Key regulator of entry into cell division that acts as a tumor suppressor. Promotes G0-G1 transition when phosphorylated by CDK3/cyclin-C. Acts as a transcription repressor of E2F1 target genes. The underphosphorylated, active form of RB1 interacts with E2F1 and represses its transcription activity, leading to cell cycle arrest. Directly involved in heterochromatin formation by maintaining overall chromatin structure and, in particular, that of constitutive heterochromatin by stabilizing histone methylation. Recruits and targets histone methyltransferases SUV39H1, SUV420H1 and SUV420H2, leading to epigenetic transcriptional repression. Controls histone H4 'Lys-20' trimethylation. Inhibits the intrinsic kinase activity of TAF1. Mediates transcriptional repression by SMARCA4/BRG1 by recruiting a histone deacetylase (HDAC) complex to the c-FOS promoter. In resting neurons, transcription of the c-FOS promoter is inhibited by BRG1-dependent recruitment of a phospho-RB1-HDAC1 repressor complex. Upon calcium influx, RB1 is dephosphorylated by calcineurin, which leads to release of the repressor complex (By similarity). In case of viral infections, interactions with SV40 large T antigen, HPV E7 protein or adenovirus E1A protein induce the disassembly of RB1-E2F1 complex thereby disrupting RB1's activity.
Subunit:
Interacts with ATAD5. Interacts with PRMT2, CDK1 and CDK2. The hypophosphorylated form interacts with and sequesters the E2F1 transcription factor. Interacts with heterodimeric E2F/DP transcription factor complexes containing TFDP1 and either E2F1, E2F3, E2F4 or E2F5, or TFDP2 and E2F4. The unphosphorylated form interacts with EID1, ARID3B, KDM5A, SUV39H1, MJD2A/JHDM3A and THOC1. Interacts with the N-terminal domain of TAF1. Interacts with AATF, DNMT1, LIN9, LMNA, SUV420H1, SUV420H2, PELP1 and TMPO-alpha. May interact with NDC80. Interacts with GRIP1 and UBR4. Interacts with ARID4A and KDM5B. Interacts with E4F1 and LIMD1. Interacts with SMARCA4/BRG1 AND HDAC1. Interacts with adenovirus E1A protein, HPV E7 protein and SV40 large T antigen. Interacts with PSMA3 and USP4. Interacts (when methylated at Lys-860) with L3MBTL1.
Subcellular Location:
Nucleus.
Tissue Specificity:
Expressed in the retina.
Post-translational modifications:
Phosphorylated by CDK6 and CDK4, and subsequently by CDK2 at Ser-567 in G1, thereby releasing E2F1 which is then able to activate cell growth. Dephosphorylated at the late M phase. SV40 large T antigen, HPV E7 and adenovirus E1A bind to the underphosphorylated, active form of pRb. Phosphorylation at Thr-821 and Thr-826 promotes interaction between the C-terminal domain C and the Pocket domain, and thereby inhibits interactions with heterodimeric E2F/DP transcription factor complexes. Dephosphorylated at Ser-795 by calcineruin upon calcium stimulation. CDK3/cyclin-C-mediated phosphorylation at Ser-807 and Ser-811 is required for G0-G1 transition. Phosphorylated by CDK1 and CDK2 upon TGFB1-mediated apoptosis.
N-terminus is methylated by METTL11A/NTM1. Monomethylated at Lys-860 by SMYD2, promoting interaction with L3MBTL1.
DISEASE:
Defects in RB1 are the cause of childhood cancer retinoblastoma (RB) [MIM:180200]. RB is a congenital malignant tumor that arises from the nuclear layers of the retina. It occurs in about 1:20'000 live births and represents about 2% of childhood malignancies. It is bilateral in about 30% of cases. Although most RB appear sporadically, about 20% are transmitted as an autosomal dominant trait with incomplete penetrance. The diagnosis is usually made before the age of 2 years when strabismus or a gray to yellow reflex from pupil ('cat eye') is investigated.
Defects in RB1 are a cause of susceptibility to bladder cancer (BLC) [MIM:109800]. A malignancy originating in tissues of the urinary bladder. It often presents with multiple tumors appearing at different times and at different sites in the bladder. Most bladder cancers are transitional cell carcinomas. They begin in cells that normally make up the inner lining of the bladder. Other types of bladder cancer include squamous cell carcinoma (cancer that begins in thin, flat cells) and adenocarcinoma (cancer that begins in cells that make and release mucus and other fluids). Bladder cancer is a complex disorder with both genetic and environmental influences.
Defects in RB1 are a cause of osteogenic sarcoma (OSRC) [MIM:259500].
Similarity:
Belongs to the retinoblastoma protein (RB) family.
Gene ID:
5925
phospho-Rb (Ser249)抗体（antibody,
Ab）是由效应B细胞（效应**B细胞）分泌，机体用于抵御外来物质，如病毒，**等抗原，结构呈“Y”字型的球状蛋白质，仅仅存在于脊椎动物的血液和B**细胞膜表面。凡是能够跟抗体结合的物质，均被称作抗原，因此对于抗抗体（能够结合抗体的抗体）来说，抗体本身也是一种抗原物质。
phospho-Rb (Ser249)抗体普通抗体重链和轻链的结构
重链结构：普通的**球蛋白具有2条重链（H链），分子量约为50kD,有μ、δ、γ、ε和α五种重链亚型，对应的**球蛋白名称分别为IgM、IgG、IgA、IgD和IgE。
轻链结构： 普通**球蛋白具有2条轻链（L链），分子质量约25kDa，有κ链和λ链两种亚型，这两种轻链决定了Ig的亚型类别（IgG1，IgG2，IgG3，IgG4）。一个天然的Ig分子两条轻链总是相同的，但在同一个体内可存在分别带有κ或λ链的抗体分子。不同种属生物体内两型轻链的比例不同，正常人血清**球蛋白κ链：λ链约为2：1，而在小鼠的比例为20：1。
2.2抗体Fab段和Fc段
IgG经木瓜蛋白酶酶切后裂解为2个完全相同的Fab段和1个Fc段,每个Fab段都为单价,可与抗原结合但不会再发生凝集反应；经胃蛋白酶酶切后裂解为1个完整F(ab)2片段和碎片化的Fc片段,F(ab’)2片段为双价,可同时结合两个抗原表位。Fab段为抗原结合片段（fragment of antigen binding，Fab），相当于抗体分子的两个臂，由一个完整的轻链和重链的VH和CH1结构域组成。Fc段为可结晶段（fragment crystallizable，Fc）相当于Ig的CH2和CH3结构域，是Ig与效应分子或者细胞相互作用的部位。Fab段包含完整的可变区，以及恒定区的CH1区域。Fc段仅指Ig恒定区CH2和CH3的区域，相当于Y字结构下面那一部分。
合格 NBPF5 NBPF5蛋白抗体
合格 NBPF8 NBPF8蛋白抗体
合格 NC2 alpha DR1相关蛋白1抗体
合格 NDC1 跨膜蛋白48
合格 NDFIP2 NDFIP2抗体
合格 NDUFB1 NDUFB1蛋白抗体
合格 NDUFB10 NDUFB10蛋白抗体
合格 MUP1 线粒体解偶联蛋白1抗体
合格 Mus81 核酸内切酶同源蛋白MUS81抗体
合格 TGF beta Receptor III 转移生长因子β受体3抗体
合格 CHRM5 毒蕈碱型乙酰胆碱受体M5抗体
合格 MBNL1 MBNL1蛋白抗体
合格 Mutarotase 半乳糖变旋酶抗体
合格 MXRA7 基质重塑相关蛋白7抗体
合格 ZFP38 锌指蛋白38抗体
合格 ZFY19 ZFY19抗体
合格 MMP8 基质金属蛋白酶-8/胶原酶2抗体
合格 MYEOV 多发性骨髓瘤基因抗体
合格 Thrombin heavy chain 凝血酶(凝血因子II)重链抗体
合格 MYO15A 肌球蛋白15A抗体
合格 ZGPAT 锌指蛋白ZGPAT抗体
合格 MYO16 肌球蛋白16/Myosin XVI抗体
合格 PRKCBP1 蛋白激酶C结合蛋白1抗体
合格 MYOM3 肌间蛋白3抗体
合格 Rarres3 视黄酸受体应答蛋白3抗体
合格 Myosin 1C 肌球蛋白MYO1C抗体