相关产品推荐更多 >
万千商家帮你免费找货
0 人在求购买到急需产品
- 详细信息
- 文献和实验
- 技术资料
- 保存条件:
常温
- 保质期:
根据瓶身LOT号查询
- 英文名:
Hexylene glycol
- 库存:
有现货
- 供应商:
浙江羽翔生物科技有限公司
- CAS号:
107-41-5
- 规格:
50G
属性
产品名称
2-甲基-2,4-戊二醇, BioXtra, ≥99% (GC)
InChI key
SVTBMSDMJJWYQN-UHFFFAOYSA-N
InChI
1S/C6H14O2/c1-5(7)4-6(2,3)8/h5,7-8H,4H2,1-3H3
SMILES string
CC(O)CC(C)(C)O
vapor density
4.1 (vs air)
vapor pressure
0.02 mmHg ( 20 °C)
product line
BioXtra
assay
≥99% (GC)
form
liquid (or viscous liquid)
expl. lim.
7.4 %
impurities
≤0.0005% Phosphorus (P)
ign. residue
≤0.1%
refractive index
n20/D 1.427 (lit.)
bp
197 °C (lit.)
mp
−40 °C (lit.)
density
0.925 g/mL at 25 °C (lit.)
anion traces
chloride (Cl-): ≤0.05%
sulfate (SO42-): ≤0.05%
cation traces
Al: ≤0.0005%
Ca: ≤0.0005%
Cu: ≤0.0005%
Fe: ≤0.0005%
K: ≤0.005%
Mg: ≤0.0005%
NH4+: ≤0.05%
Na: ≤0.005%
Pb: ≤0.001%
Zn: ≤0.0005%
Quality Level
200
风险提示:丁香通仅作为第三方平台,为商家信息发布提供平台空间。用户咨询产品时请注意保护个人信息及财产安全,合理判断,谨慎选购商品,商家和用户对交易行为负责。对于医疗器械类产品,请先查证核实企业经营资质和医疗器械产品注册证情况。
文献和实验Crystallization and preliminary X-ray analysis of peptidyl-tRNA hydrolase from Thermus thermophilus HB8.
Peptidyl-tRNA is produced from the ribosome as a result of aborted translation. Peptidyl-tRNA hydrolase cleaves the ester bond between the peptide and the tRNA of peptidyl-tRNA molecules, to recycle tRNA for further rounds of protein synthesis. In this study, peptidyl-tRNA hydrolase from Thermus thermophilus HB8 (TthPth) was crystallized using 2-methyl-2,4-pentanediol as a precipitant. The crystals belonged to the orthorhombic space group P2₁2₁2₁, with unit-cell parameters a=47.45, b=53.92, c=58.67 Å, and diffracted X-rays to atomic resolution (beyond 1.0 Å resolution). The asymmetric unit is expected to contain one TthPth molecule, with a solvent content of 27.13% (VM=1.69 Å3 Da(-1)). The structure is being solved by molecular replacement.
2.2.10 DNA微阵列法 Yan等2001年[40]将以分子杂交为基础的微阵列技术应用于DNA甲基化检测中,这种方法是基于杂交的寡核苷酸微阵列,是一种在基因组中寻找新位点的方法。包括用于整个基因组范围内扫描的差异甲基化(DMH)杂交(Huang等1999年[41])和用于检测某个位点的甲基化特异性微阵列MSO(Gitan等2002年[42])。前者类似于mRNA表达谱或cDNA微阵列,是CpG岛微阵列,后者类似于寡核苷酸微阵列,是针对CpG二核苷酸位点的甲基化特异性寡核苷酸微阵列[26
聚集成 CpG 岛(CCIs),50% 以上的基因启动子都含 CCIs,一般都集中在转录起始位点。甲基的存在导致了转录过程终止,从而使这些基因沉默。其机制主要与转录因子 CTCF(CCCTC binding factor)蛋白和甲基 CpG 结合蛋白(MBP)有关。CTCF 可以控制染色质三维结构的改变,促进或抑制不同位点的基因表达,但 CTCF 不能与甲基化CpG 结合,MBP 含有甲基化 CpGs 结合域,同时能与组蛋白去乙酰化酶(HDAC)结合,可重构染色质并抑制转录。 图
: 744-6,748-50,752. [25]Frommer M, McDonald L E, Millar D S, et al. A genomic sequencing protocol that yields a positive display of 5-methylcytosine residues in individual DNA strands [J]. Proc Natl Acad Sci USA, 1992, 89: 1827–1831. [26]朱燕. DNA的甲基化的分析
技术资料暂无技术资料 索取技术资料









