专肽生物_定制多肽合成服务_多肽合成定制服务_多肽合成厂家_多肽合成公司

Gastrin-Releasing Peptide, human (GRP) 属于Bombesin样肽家族，不是经典的下丘脑-垂体调节激素, 因为胃泌素释放肽 (GRP) 对垂体激素释放的调解中只起微弱作用。
Gastrin-Releasing Peptide, human (GRP) belongs to the bombesin-like peptide family, and is not a classical hypothalamic-hypophyseal regulatory hormone since it plays only a perfunctory role in the mediation of pituitary hormone release.

Mammalian bombesin-like peptide neurotransmitter that is an agonist for the gastrin-releasing peptide receptor (GRPR). It exhibits physiological functions such as gastrin and somatostatin release and chemoattraction within the immune system.

GRP (Human) is a protein that belongs to the group of peptides. It is an activator of G-protein coupled receptors. GRP (Human) has been shown to be a ligand for the receptor GPVI, which is involved in the activation of platelets and megakaryocytes. GRP (Human) can also inhibit ion channels, such as voltage-gated sodium channels or calcium channels. This protein is used in research for studying cell biology and pharmacology. GRP (Human) is purified at high purity by a process involving chromatography and gel filtration.

Dubovy SR, et al. Expression of hypothalamic neurohormones and their receptors in the human eye. Oncotarget. 2017 Jun 3. : https://www.ncbi.nlm.nih.gov/pubmed/28621684

多肽H2N-Val-Pro-Leu-Pro-Ala-Gly-Gly-Gly-Thr-Val-Leu-Thr-Lys-Met-Tyr-Pro-Arg-Gly-Asn-His-Trp-Ala-Val-Gly-His-Leu-Met-NH2的合成步骤：

1、合成MBHA树脂：取若干克的MBHA树脂（如初始取代度为0.5mmol/g）和1倍树脂摩尔量的Fmoc-Linker-OH加入到反应器中，加入DMF，搅拌使氨基酸完全溶解。再加入树脂2倍量的DIEPA，搅拌混合均匀。再加入树脂0.95倍量的HBTU，搅拌混合均匀。反应3-4小时后，用DMF洗涤3次。用2倍树脂体积的10%乙酸酐/DMF 进行封端30分钟。然后再用DMF洗涤3次，甲醇洗涤2次，DCM洗涤2次，再用甲醇洗涤2次。真空干燥12小时以上，得到干燥的树脂{Fmoc-Linker-MHBA Resin}，测定取代度。这里测得取代度为 0.3mmol/g。结构如下图：

2、脱Fmoc：取2.62g的上述树脂，用DCM或DMF溶胀20分钟。用DMF洗涤2遍。加3倍树脂体积的20%Pip/DMF溶液，鼓氮气30分钟，然后2倍树脂体积的DMF 洗涤5次。得到 H2N-Linker-MBHA Resin 。（此步骤脱除Fmoc基团，茚三酮检测为蓝色，Pip为哌啶）。结构图如下：

3、缩合：取2.36mmol Fmoc-Met-OH 氨基酸，加入到上述树脂里，加适当DMF溶解氨基酸，再依次加入4.72mmol DIPEA，2.24mmol HBTU。反应30分钟后，取小样洗涤，茚三酮检测为无色。用2倍树脂体积的DMF 洗涤3次树脂。（洗涤树脂，去掉残留溶剂，为下一步反应做准备）。得到Fmoc-Met-Linker-MBHA Resin。氨基酸：DIPEA：HBTU：树脂=3：6：2.85：1（摩尔比）。结构图如下：

4、依次循环步骤二、步骤三，依次得到

H2N-Met-Linker-MBHA Resin

Fmoc-Leu-Met-Linker-MBHA Resin

H2N-Leu-Met-Linker-MBHA Resin

Fmoc-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Thr(tBu)-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Thr(tBu)-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Gly-Thr(tBu)-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Gly-Thr(tBu)-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Gly-Gly-Thr(tBu)-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Gly-Gly-Thr(tBu)-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Gly-Gly-Gly-Thr(tBu)-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Gly-Gly-Gly-Thr(tBu)-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Ala-Gly-Gly-Gly-Thr(tBu)-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Ala-Gly-Gly-Gly-Thr(tBu)-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Pro-Ala-Gly-Gly-Gly-Thr(tBu)-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Pro-Ala-Gly-Gly-Gly-Thr(tBu)-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Leu-Pro-Ala-Gly-Gly-Gly-Thr(tBu)-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Leu-Pro-Ala-Gly-Gly-Gly-Thr(tBu)-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Pro-Leu-Pro-Ala-Gly-Gly-Gly-Thr(tBu)-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

H2N-Pro-Leu-Pro-Ala-Gly-Gly-Gly-Thr(tBu)-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

Fmoc-Val-Pro-Leu-Pro-Ala-Gly-Gly-Gly-Thr(tBu)-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin

以上中间结构，均可在专肽生物多肽计算器-多肽结构计算器中，一键画出。

最后再经过步骤二得到 H2N-Val-Pro-Leu-Pro-Ala-Gly-Gly-Gly-Thr(tBu)-Val-Leu-Thr(tBu)-Lys(Boc)-Met-Tyr(tBu)-Pro-Arg(Pbf)-Gly-Asn(Trt)-His(Trt)-Trp(Boc)-Ala-Val-Gly-His(Trt)-Leu-Met-Linker-MBHA Resin，结构如下：

5、切割：6倍树脂体积的切割液（或每1g树脂加8ml左右的切割液），摇床摇晃 2小时，过滤掉树脂，用冰无水乙醚沉淀滤液，并用冰无水乙醚洗涤沉淀物3次，最后将沉淀物放真空干燥釜中，常温干燥24小试，得到粗品H2N-Val-Pro-Leu-Pro-Ala-Gly-Gly-Gly-Thr-Val-Leu-Thr-Lys-Met-Tyr-Pro-Arg-Gly-Asn-His-Trp-Ala-Val-Gly-His-Leu-Met-NH2。结构图见产品结构图。

切割液选择：1）TFA：H2O=95%：5%

2）TFA：H2O：TIS=95%：2.5%：2.5%

3）三氟乙酸：茴香硫醚：1，2-乙二硫醇：苯酚：水=87.5%：5%：2.5%：2.5%：2.5%

（前两种适合没有容易氧化的氨基酸，例如Trp、Cys、Met。第三种适合几乎所有的序列。）

6、纯化冻干：使用液相色谱纯化，收集目标峰液体，进行冻干，获得蓬松的粉末状固体多肽。不过这时要取小样复测下纯度 是否目标纯度。

7、最后总结：

杭州专肽生物技术有限公司（ALLPEPTIDE https://www.allpeptide.com）主营定制多肽合成业务，提供各类长肽，短肽，环肽，提供各类修饰肽，如：荧光标记修饰（CY3、CY5、CY5.5、CY7、FAM、FITC、Rhodamine B、TAMRA等），功能基团修饰肽（叠氮、炔基、DBCO、DOTA、NOTA等），同位素标记肽（N15、C13），订书肽（Stapled Peptide）,脂肪酸修饰肽（Pal、Myr、Ste），磷酸化修饰肽（P-Ser、P-Thr、P-Tyr），环肽（酰胺键环肽、一对或者多对二硫键环），生物素标记肽，PEG修饰肽，甲基化修饰肽等。

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