K-Ras
K-Ras (KRAS) is a small GTPase that functions as a molecular switch within the RAS/MAPK signaling network, cycling between inactive GDP-bound and active GTP-bound states to regulate cell proliferation, differentiation, and survival[1][2]. Mechanistically, activated KRAS transduces signals from cell-surface receptors to downstream effectors, including the MAPK/ERK and PI3K/AKT pathways, thereby coordinating cellular growth and stress-response programs[1][3]. Oncogenic mutations impair GTP hydrolysis and maintain persistent KRAS signaling, resulting in sustained activation of proliferative pathways that contribute to tumor initiation, progression, and therapeutic resistance across multiple cancer types, particularly pancreatic ductal adenocarcinoma, colorectal cancer, and non-small cell lung cancer[2][3][4]. In disease models, mutant KRAS also reshapes the tumor microenvironment through inflammatory and immune-regulatory signaling, further supporting tumor development and immune evasion[3][2]. Compared with the related RAS isoforms HRAS and NRAS, KRAS is the most frequently altered RAS family member in human cancer and accounts for the majority of oncogenic RAS mutations, highlighting its distinct biological and clinical importance[2][5]. For experimental applications, the development of mutation-selective inhibitors, especially KRAS^G12C^ inhibitors, has established a tractable platform for studying KRAS-dependent signaling and therapeutic resistance mechanisms, although resistance remains a major challenge for long-term clinical efficacy[2][5].
References:
- [1]. K-Ras gene information.
- [2]. Huang L, et al. KRAS mutation: from undruggable to druggable in cancer. Signal Transduct Target Ther. 2021 Nov 15;6(1):386. [Content Brief]
- [3]. Uniyal P, et al. KRAS Mutations in Cancer: Understanding Signaling Pathways to Immune Regulation and the Potential of Immunotherapy. Cancers (Basel). 2025 Feb 25;17(5):785. [Content Brief]
- [4]. Suda K, et al. Biological and clinical significance of KRAS mutations in lung cancer: an oncogenic driver that contrasts with EGFR mutation. Cancer Metastasis Rev. 2010 Mar;29(1):49-60. [Content Brief]
- [5]. Riedl JM, et al. Emerging landscape of KRAS inhibitors in cancer treatment. Cancer Cell. 2026 Mar 9;44(3):471-497. [Content Brief]
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K-Ras Related Products (285)
Related Products (285)
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RAS GTPase-IN-3
0 ImagesCat. No.: HY-189129RAS GTPase-IN-3 is a RAS GTPase inhibitor that targets multiple KRAS-Q61 mutant variants. RAS GTPase-IN-3 binds to the switch II pocket of GTP-bound KRAS-Q61R, positions its side-chain imidazole group near the GTP γ-phosphate, and accelerates GTP hydrolysis of KRAS-Q61. RAS GTPase-IN-3 inhibits Sos-catalyzed nucleotide exchange on GTP-bound KRAS. RAS GTPase-IN-3 only activates GTP hydrolysis of HRAS-Q61R/Q95H and NRAS-Q61R/L95H mutant proteins. RAS GTPase-IN-3 can be applied in research related to cancers driven by KRAS-Q61 mutations.
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SOS1-IN-6
0 ImagesCat. No.: HY-144210CAS No.: 2751718-88-2SOS1-IN-6 (compound 33-P1) is a potent SOS1 inhibitor with IC50s of 14.9 and 73.3 nM for SOS1-G12D and SOS1-G12V, respectively.
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KRAS G12D-IN-27
0 ImagesCat. No.: HY-171581CAS No.: 2938179-13-4
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KRAS G12C-IN-78
0 ImagesCat. No.: HY-181965CAS No.: 3023465-20-2KRAS G12C-IN-78 is a selective SWII-binding KRASG12C dual inhibitor targeting both inactive and active states. KRAS G12C-IN-78 rapidly inhibits ERK1/2 phosphorylation, induces covalent adduct formation with endogenous KRASG12C, suppresses MAPK pathway gene expression, and inhibits cellular proliferation in KRASG12C mutant cells. KRAS G12C-IN-78 can be used for the research of KRASG12C mutant solid tumors, including pancreatic ductal adenocarcinoma and non-small cell lung cancer.
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KRAS G12C inhibitor 45
0 ImagesCat. No.: HY-142947CAS No.: 2670380-74-0KRAS G12C inhibitor 45 (compound 78) is a potent KRAS G12C inhibitor.
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KRas G12C inhibitor 2
0 ImagesCat. No.: HY-112492CAS No.: 2206735-61-5KRas G12C inhibitor 2 is a compound that inhibits KRas G12C, extracted from patent US 20180072723 A1.
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PROTAC SOS1 degrader-3
0 ImagesCat. No.: HY-152145CAS No.: 3029320-99-5PROTAC SOS1 degrader-3 is a PROTAC degrader targeting SOS1, which induces the targeted degradation of SOS1 via the ubiquitin-proteasome system, with DC50 values ranging from 0.19 μM to 0.75 μM in multiple distinct colorectal cancer cell lines. PROTAC SOS1 degrader-3 inhibits the phosphorylation of AKT and ERK. PROTAC SOS1 degrader-3 induces apoptosis and morphological changes in KRAS-mutant colorectal cancer organoids. PROTAC SOS1 degrader-3 can be applied in studies related to kras-mutant colorectal cancer.
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KRAS inhibitor-40
0 ImagesCat. No.: HY-168442CAS No.: 3059496-56-6KRAS inhibitor-40 (Compound 41) is a KRAS inhibitor that interferes with the KRAS G12C-BRAF complex. KRAS inhibitor-40 inhibits the ERK phosphorylation of KRAS downstream signaling pathway. KRAS inhibitor-40 can inhibit the proliferation of tumor cells with different KRAS mutation types and has antitumor activity.
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KRAS inhibitor-34
0 ImagesCat. No.: HY-162974CAS No.: 3030078-43-1KRAS inhibitor-34 (compound 27) is a KRAS inhibitor, with IC50 of 6.4 nM. KRAS inhibitor-34 can be used in tumor research.
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KRASG12C IN-18
0 ImagesCat. No.: HY-179404CAS No.: 2966924-24-1KRASG12C IN-18 is an orally active covalent KRASG12C inhibitor that achieves complete covalent engagement of KRASG12C in both GDP- and GMPPNP-bound states and displays strong antiproliferative activity against KRASG12C and resistance-associated variants, including KRASG12C/R68S, with low-nanomolar IC50 values. KRASG12C IN-18 exhibits marked in vivo efficacy in KRASG12C-driven solid tumor and KRASG12C/R68S xenograft models and can be used for colorectal cancer research.
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KRAS G12C-IN-75
0 ImagesCat. No.: HY-181889KRAS G12C-IN-75 is an orally active, blood-brain barrier penetrant KRASG12C inhibitor with an IC50 of 0.53 nM. KRAS G12C-IN-75 attenuates active transport mediated by P-glycoprotein (P-gp) and breast cancer resistance protein (BCRP). KRAS G12C-IN-75 inhibits tumor growth, regulates the expression of downstream MAPK target genes DUSP6 and SPRY4, and exhibits dose-dependent KRASG12C alkylation in KRASG12C-positive xenograft models. KRAS G12C-IN-75 can be used for research related to non-small cell lung cancer.
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(7R)-Eras-4001
0 ImagesCat. No.: HY-175870ACAS No.: 3024878-21-2(7R)-Eras-4001 is an orally active KRAS mutant inhibitor with remarkable selectivity for H-RAS and N-RAS. (7R)-Eras-4001 effectively suppresses cancer cell viability by blocking downstream signaling pathways mediated by RAF family proteins, inhibiting the formation of the KRASG12D-RAF1 RBD complex and the phosphorylation of ERK1/2. (7R)-Eras-4001 induces tumor growth inhibition and regression in a dose-dependent manner, and also reduces plasma ERK1/2 phosphorylation levels. (7R)-Eras-4001 exerts a synergistic effect with anti-PD-1 Cetuximab (HY-P9905). (7R)-Eras-4001 can be used in research on non-small cell lung cancer, pancreatic cancer, colorectal cancer, and ovarian cancer.
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Debecarasib
0 ImagesCat. No.: HY-187863CAS No.: 2991354-62-0Debecarasib is a KRAS inhibitor. Debecarasib exhibits antitumor activity and can be used in research on KRAS mutation-driven cancers.
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KV-14
0 ImagesCat. No.: HY-186225CAS No.: 3113281-23-2KV-14 is a KRAS-VHL compound. KV-14 is applicable for cancer research.
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ZG1077
0 ImagesCat. No.: HY-151571CAS No.: 2670380-82-0ZG1077 is a covalent KRAS G12C inhibitor. ZG1077 can be used in the research of non-small cell lung cancer (NSCLC).
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SAH-SOS1A
0 ImagesCat. No.: HY-P2265CAS No.: 1652561-87-9SAH-SOS1A is a peptide-based SOS1/KRAS protein interaction inhibitor. SAH-SOS1A binds to wild-type and mutant KRAS (G12D, G12V, G12C, G12S, and Q61H) with nanomolar affinity (EC50=106-175 nM), directly and independently blocks nucleotide association, impairs KRAS-driven cancer cell viability, and exerts its effects by on-mechanism blockade of the ERK-MAPK phosphosignaling cascade downstream of KRAS.
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SIAIS562055
0 ImagesCat. No.: HY-168637CAS No.: 3062106-15-1SIAIS562055 is a potent cereblon-based SOS1 PROTAC with a Kd of 95.9 nM. SIAIS562055 exhibits sustained degradation of SOS1 and inhibition of downstream ERK pathways. SIAIS562055 effectively blocked the binding of KRASG12C or KRASG12D to SOS1, with the IC50 values of 95.7 nM and 134.5 nM, respectively. SIAIS562055 exhibits potent anticancer activity.
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MRTX849-amide-C4-(o)-carborane
0 ImagesCat. No.: HY-182044MRTX849-amide-C4-(o)-carborane is a KRASG12C inhibitor with mutation selectivity for cells expressing KRASG12C. MRTX849-amide-C4-(o)-carborane shows low intrinsic cytotoxicity in cancer cells. MRTX849-amide-C4-(o)-carborane covalently binds to Cys12 of KRASG12C, recruits Hsp70, promotes ubiquitination, and induces proteasome-dependent degradation of the target protein. MRTX849-amide-C4-(o)-carborane inhibits the activity of the downstream ERK signaling pathway and induces apoptosis signaling in cancer cells. MRTX849-amide-C4-(o)-carborane is applicable for the research of KRASG12C-positive cancers.
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KRAS inhibitor-11
0 ImagesCat. No.: HY-145436CAS No.: 2761218-40-8KRAS inhibitor-11 (compound 12) is a KRAS inhibitor.
