磷酸二酯酶II 来源于牛脾

3'-核酸外切酶 | 脾磷酸二酯酶 | 脾脏核酸外切酶

spleen exonuclease | 3'-exonuclease; spleen phosphodiesterase | 3'-exonuclease | spleen phosphodiesterase | 3′-Exonuclease | Spleen exonuclease | Spleen phosphodiesterase | Phosphodiesterase II, Bovine Spleen | PLD3

P128574-10UN

10U

EnzymoPure™

≥1.2 u/mg dry weight

磷酸二酯酶(PDE)II属于PDE超家族（包括PDE1至PDE11亚家族）。以二聚体形式存在，由N端调节结构域、C端异戊二烯化结构域和一个含Zn2+的催化结构域组成。牛脾PDE2的分子量为65kDa。在二价阳离子的存在下发挥酶活性，最适pH为7.5。 应用： 本品已用于多聚核苷酸链长、碱基组成和末端核苷酸的鉴定。酶已用于切除DNA中的吡啶氧丁基(POB)碱基加合物。另外还可联用微球菌核酸内切酶将纯化DNA水解为3-核苷单磷酸。 牛脾来源的磷酸二酯酶II已用于： 切除DNA中的吡啶氧丁基(POB)碱基加合物 在富集环腺苷之前消化DNA 将蓝口贝鳃组织的DNA水解为脱氧核糖核苷3′-单磷酸 磷酸二酯酶（PDE）是一种可用于破坏磷酸二酯键的酶。 它是一种膜结合糖蛋白，可用于催化各种核苷酸多磷酸盐的水解。 磷酸二酯酶II已用于P8-dGMP复合物等。 生化/生理作用： 磷酸二酯酶(PDE)可破坏磷酸二酯键。3-异丁基-1-甲基黄嘌呤(IBMX)是一种潜在的PDE2抑制剂。 该酶作用于 poly (A)、poly (U) 和 poly (I)。天然 DNA 和 poly (C) 对这种酶的操作相当耐受。 将 RNA、RNA-Core、3'-烷基和 3'-芳基-核苷磷酸盐以及带有 3'-磷酸基团的多聚脱氧核糖核苷酸水解为 3'-单核苷酸。 不攻击具有 5'-磷酸单酯末端基团的多核苷酸。

5'->3' exonuclease that hydrolyzes the phosphodiester bond of single-stranded DNA (ssDNA) and RNA molecules to form nucleoside 3'-monophosphates and 5'-end 5'-hydroxy deoxyribonucleotide/ribonucleotide fragments. Partially redundant with PLD4, can cleave all four nucleotides displaying higher efficiency for ssDNA and RNA fragments initiated with uridine and guanosine residues and lower efficiency for cytidine-initiated substrates. As a result, it does not always degrade polynucleotides to the single nucleotide level, it can stall at specific sites sparing certain fragments from exonucleolytic degradation. Processes self and pathogenic ssDNA and RNA molecules that reach the endolysosomal compartment via phagocytosis or autophagy and may serve as 'danger' signals for recognition by innate immune receptors such as toll-like receptors (TLRs). Degrades mitochondrial CpG-rich ssDNA fragments to prevent TLR9 activation and autoinflammatory response, but it can cleave viral RNA to generate ligands for TLR7 activation and initiate antiviral immune responses. In plasmacytoid dendritic cells, it cooperates with endonuclease RNASET2 to release 2',3'-cyclic guanosine monophosphate (2',3'-cGMP), a potent stimulatory ligand for TLR7. Produces 2',3'-cGMPs and cytidine-rich RNA fragments that occupy TLR7 ligand-binding pockets and trigger a signaling-competent state. Can exert polynucleotide phosphatase activity toward 5'-phosphorylated ssDNA substrates although at a slow rate. Transphosphatidylase that catalyzes the exchange with R to S stereo-inversion of the glycerol moiety between (S,R)-lysophosphatidylglycerol (LPG) and monoacylglycerol (MAG) substrates to yield (S,S)-bis(monoacylglycero)phosphate (BMP). Can synthesize a variety of (S,S)-BMPs representing the main phospholipid constituent of lysosomal intralumenal vesicle (ILV) membranes that bind acid hydrolases for lipid degradation. Regulates the homeostasis and interorganellar communication of the endolysosomal system with an overall impact on cellular removal of dysfunctional organelles via autophagy as well as proper protein and lipid turnover. May play a role in myotube formation in response to ER stress.

天然

牛(Bovine)