b polypeptide

BNP-32（Brain natriuretic peptide-32）是心血管激素前体proBNP的肽段，能够结合大鼠血管平滑肌上的利钠肽受体（IC50 = 7.3 nM），并在同样的细胞中促进cGMP积累（EC50 = 170 nM）。BNP-32还能使经去甲肾上腺素预收缩的孤立大鼠主动脉条带松弛（EC50 = 6.7 nM），当以3 µg kg的剂量给药时，能增加大鼠的尿量和尿液电解质排泄，并诱导低血压。

Enduracidin B, a polypeptide antibiotic, is a prominent constituent of Enduracidin. This antibiotic is synthesized by Streptomyces fungicides.

Proinsulin C-peptide human acetate (Proinsulin C-peptide human acetate (33017-11-7 Free base)) 是一种由31个氨基酸残基组成的多肽，它连接胰岛素原的 A 链和 B 链以确保正确折叠，具有生物活性并调节细胞功能。

IgG has four forms, provides the majority of antibody-based immunity against invading pathogens. The only antibody capable of crossing the placenta to give passive immunity to the fetus. Eliminates pathogens in the early stages of B cell-mediated (humoral

Orexin B, canine 是多肽分子，其序列是 RPGPPGLQGRLQRLLQASGNHAAGILTM-NH2。

Fibrinopeptide A, human is a 16-residue short polypeptide cleaved from fibrinogen by thrombin. Fibrinopeptide A, human locates at the NH2-termini of the Aα chain.The conversion of monomeric fibrinogen into polymeric fibrin is mediated by thrombin, which b

Bulevirtide (Myrcludex B) acetate 是一种病毒粒子进入抑制剂，可阻断病毒粒子的肝细胞进入途径，即肝钠 牛磺胆酸盐协同转运多肽 (NTCP) 受体。它可用于 HBV 和 HDV 感染研究。

Gramicidin C, a naturally occurring polypeptide antibiotic, is isolated from B. brevis var. G.B.

Brain Natriuretic Peptide (BNP) (1-32), rat is a 32 amino acid polypeptide secreted by the ventricles of the heart in response to excessive stretching of heart muscle cells (cardiomyocytes).Brain natriuretic peptide (type B natriuretic peptide) was origin

Colistin A is an antibiotic generated by certain strains of the bacteria Paenibacillus polymyxa. Colistin is a mixture of the cyclic polypeptides colistin A and B and belongs to the class of polypeptide antibiotics known as polymyxins. Colistin is effecti

NPD8716 is a hepatitis B D virus entry inhibitor, targeting sodium taurocholate cotransporting polypeptide (NTCP).

Pentagastrin (ICI-50123) 是一种选择性的胆囊收缩素 B(CCKB) 受体激动剂，IC50=11 nM。它能够增强胃粘膜对酸的防御机制，并保护胃粘膜免受损伤。

PapRIV是最初从B. cereus分离出的一种群体感应七肽。它被转译为一个48-氨基酸多肽，由NprB蛋白酶在细胞外分泌和加工形成活性七肽。PapRIV（1-25 µM）在BV-2微胶质细胞中诱导IL-6和TNF-α的产生，并促使NF-κB转移。

Bulevirtide (Myrcludex B) 是一种牛磺胆酸钠共转运多肽 (sodium-taurocholate co-transporting polypeptide, NTCP) 受体抑制剂，IC50 为 80 pM 左右，能在远低于阻断胆盐转运所需的浓度时使 NTCP 功能失活。