Cercosporin is produced by a plant pathogen, Cercosporakikuchii, and the elsinochromes. Cercosporin is a potent photosensitizer with a short activation wavelength. Cercosporin contains the perylene quinone structural features necessary for PKC activity (I

7-oxo Staurosporine is an antibiotic originally isolated from S. platensis with diverse biological activites. It inhibits PKC, PKA, phosphorylase kinase, EGFR, and c-Src in vitro (IC50s = 9, 26, 5, 200, and 800 nM, respectively). 7-oxo Staurosporine induces cell cycle arrest in the G2/M phase in human leukemia K562 cells with a minimal effective dose (MED) of 30 ng/ml. It is cytotoxic to P388 mouse leukemia cells that are resistant and susceptible to doxorubicin . 7-oxo Staurosporine inhibits growth of the mycelial, but not yeast form of C. albicans, C. krusei, C. tropicalis, and C. lusitaniae (MICs = 3.1-25 μg/ml). It increases sphingomyelin synthesis in CHO-K1 cells when used at a concentration of 50 nM.

GNN14490, a substrate for human pancreatic lipase, is utilized to create monomolecular films for enzyme assay studies.

NPC-15437 dihydrochloride 是一种合成原型化合物，属于新型结构类别的蛋白激酶 C（PKC）抑制剂。NPC 15437 可显著抑制 PKC 的酶活性与酯类激动剂结合，IC₅₀ 分别约为 19 μM 与 23 μM；在浓度高达 300 μM 时，不影响 cAMP 依赖性或 Ca²⁺/钙调蛋白依赖性激酶，显示出对 PKC 的高度选择性，是解析 PKC 介导细胞信号通路的重要工具化合物。

PS315 inhibits the full-length and catalytic domain constructs of PKCζ (IC50=10 μM) and PKCη (IC50=30 μM). PS315 has anti-cancer activity. PS315 is a derivative of PS48 and is an allosteric PKC inhibitor by binding to the PIF-pocket of aPKC and inducing d

CC-90005 is a potent, selective and orally active inhibitor of protein kinase C-θ (PKC-θ), with an IC50 of 8 nM. CC-90005 shows selectivity for PKC-θ over PKC-δ (IC50=4440 nM). CC-90005 can inhibit T cell activation by IL-2 expression[1]. CC-90005 shows the exquisite selectivity of CC-90005, with IC50s for all other family members of >3 μM[1].CC-90005 is a moderate inhibitor of both CYP2C9 (IC50=8 μM) and CYP2C19 (IC50=5.9 μM) in human liver microsomes[1].CC-90005 inhibits IL-2 expression in LRS_WBC human PBMCs, with an IC50 of 0.15 μM[1].CC-90005 (1-10 μM; 24 h) inhibits T cell proliferation in PBMCs by 51% at 1 μM and 88% at 3 μM[1]. CC-90005 (3-30 mg/kg; p.o. twice daily for 4 days) significantly reduces the popliteal lymph node (PLN) size in a model of chronic T cell activation[1].CC-90005 (100 mg/kg; a single p.o.) significantly inhibits plasma and spleen IL-2 release by 51 and 54%, respectively[1].CC-90005 exhibits reasonable oral bioavailability (66 and 46%) and Cmax (1.18 and 1

Bisindolylmaleimide XI hydrochloride(Ro 32-0432)是一种口服活性的泛PKC抑制剂，对 PKCα、PKCβI、PKCβII、PKCγ 具有抑制作用（IC50=9/28/31/37/108 nM）。

Epsilon-V1-2 是蛋白激酶 C ε（PKCε）的特异性抑制剂。Epsilon-V1-2 被用于卵巢衰老、人颗粒细胞凋亡、脑缺血-再灌注损伤、脑发育、肝细胞胰岛素信号转导以及缺血条件下神经元细胞死亡等相关研究。研究表明，Epsilon-V1-2 能够有效降低 PKCε 的活性，从而促进对线粒体动力学、钙超载、AKT 激活、脑萎缩、胰岛素抵抗及铁死亡等调控通路的深入解析。Epsilon-V1-2 在卒中、SHORT 综合征、肝脂肪变性及脑损伤等疾病模型中显示出显著的治疗相关性。

Protein Kinase C (19-31), a peptide inhibitor of protein kinase C (PKC) derived from the pseudo-substrate regulatory domain of PKCa (residues 19-31) with a serine at position 25 replacing the wild-type alanine, is used as a protein kinase C substrate peptide.