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 (282)
Related Products (282)
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ARS-853
0 ImagesARS-853 is a cell-active, selective, covalent KRAS G12C inhibitor with an IC50 of 2.5 μM. ARS-853 inhibits mutant KRAS-driven signaling by binding to the GDP-bound oncoprotein and preventing activation.
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BBO-11818
0 ImagesBBO-11818 is an orally active, highly selective (relative to NRAS and HRAS), non-covalent pan-KRAS inhibitor (IC50=28-120 nM). BBO-11818 specifically binds to the Switch-II/Helix 3 pocket, disrupts the KRAS:RAF1 interaction by inducing conformational changes, and blocks the MAPK signaling pathway. BBO-11818 exhibits significant anti-tumor activity, which not only inhibits cell proliferation and induces apoptosis, but also drives tumor regression in xenograft models. BBO-11818 produces synergistic effects when combined with Cetuximab (HY-P9905), anti-PD-1 antibody or PI3Kα inhibitor. BBO-11818 is used in the research of KRAS mutation-related malignancies such as pancreatic cancer, non-small cell lung cancer and colorectal cancer.
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MRTX849 analog 24
0 ImagesMRTX849 analog 24 is a KRASG12C inhibitor with a human IC50 of 140 nM. MRTX849 analog 24 binds to KRASG12C, forms a covalent interaction, and acts as a click probe to bait the protein target in proteomic studies. MRTX849 analog 24 exhibits cellular activity in cancer cells. MRTX849 analog 24 can be used for the research of krasG12C-mutant cancer.
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KRAS inhibitor-31
0 ImagesKRAS inhibitor-31 (compound 33) is a KRAS inhibitor, with KD (SPR) values of 0.019 nM, 0.019 nM and 0.096 nM for KRas G12D, KRas G12C and KRas G12V, respectively.
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SAH-SOS1A TFA
0 ImagesCat. No.: HY-P2265ACAS No.: 2896737-31-6SAH-SOS1A TFA is a peptide-based SOS1/KRAS protein interaction inhibitor. SAH-SOS1A TFA binds to wild-type and mutant KRAS (G12D, G12V, G12C, G12S, and Q61H) with nanomolar affinity (EC50=106-175 nM). SAH-SOS1A TFA directly and independently blocks nucleotide association. SAH-SOS1A TFA 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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pan-KRAS-IN-18
0 Imagespan-KRAS-IN-18 is a panKRAS inhibitor that inhibits KRAS WT and KRAS G12V with IC50s of 29 and 9 nM, respectively. pan-KRAS-IN-18 exhibits antiproliferative activity in KRAS-mutant cell lines. pan-KRAS-IN-18 can be used for lung cancer research.
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TH-Z835
0 ImagesTH-Z835 is a mutant selective KRAS (G12D) inhibitor with an IC50 of 1.6 μM. TH-Z835 inhibits both mantGMPPNP/GPPNP exchange and GPPNP/mantGMPPNP exchange.
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pan-KRAS-IN-2
0 Imagespan-KRAS-IN-2 (Compound 6) is a pan-inhibitor with IC50s ≤ 10 nM for KRAS WT and mutants (G12D, G12C, G12V, G12S, G12A and Q61H); and an IC50 > 10 μM for KRAS G13D. pan-KRAS-IN-2 can be used to study various KRAS-mediated cancers, such as pancreatic cancer and colorectal cancer.
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ARS-1323
0 ImagesARS-1323 is a KRAS G12C inhibitor. ARS-1323 specifically binds to the cysteine residue on the mutant K-Ras protein, locks it in the GDP-bound conformation, thereby blocking K-Ras activation and downstream signaling pathways. ARS-1323 can be used to investigate the signal transduction mechanisms and growth characteristics of tumor cells driven by K-Ras G12C.
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Sotorasib-d7
0 ImagesCat. No.: HY-114277SPurity: 98.90%Synonyms: AMG-510-d7Sotorasib-d7 (AMG-510-d7) is a deuterium-labeled Sotorasib (HY-114277). Sotorasib (AMG-510) is a first-in-class, orally bioavailable, and selective KRAS G12C covalent inhibitor. Sotorasib irreversibly inhibits KRAS G12C by locking it in an inactive GDP-bound state. Sotorasib leads to the regression of KRAS G12C‑mutated locally advanced or metastatic non‑small cell lung cancer (NSCLC).
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Salvianolic acid F
0 ImagesSalvianolic acid F is a KRAS inhibitor, especially for KRAS G12D. Salvianolic acid F inhibits NF-kB, MMP-9, and NO simultaneously. Salvianolic acid F inhibits cancer cell growth, invasion, and migration and induces apoptosis via the EP300/PI3K/AKT pathway in vitro. Salvianolic acid F inhibits the growth of KRAS-dependent lung cancer cells via the PI3K/AKT signaling pathway in vivo. Salvianolic acid F can be used in the research of various cancers, including KRAS G12D-driven non-small cell lung cancer (NSCLC) and ovarian cancer.
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Divarasib adipate
0 ImagesSynonyms: GDC-6036 adipateDivarasib (GDC-6036) adipate is an orally active, selective KRASG12C inhibitor with an IC50 of <0.01 μM. Divarasib adipate covalently binds Cys12 in GDP-bound KRASG12C, occupies the switch II pocket, blocks GTP binding and SOS-mediated reactivation, and inhibits oncogenic KRAS signaling. Divarasib adipate induces tumor shrinkage and robust tumor growth inhibition in KRASG12C-positive models and cancer cells. Divarasib adipate can be used for the research of non-small cell lung cancer, colorectal adenocarcinoma, pancreatic ductal adenocarcinoma, and other KRASG12C-mutated solid tumors.
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MRTX-EX185 formic
0 ImagesCat. No.: HY-145962ACAS No.: 2988148-70-3MRTX-EX185 formic is a potent KRAS (G12D) inhibitor with an IC50 of 90 nM. MRTX-EX185 formic can binds both GDP-loaded and active GNP states of KRAS and KRAS (G12D). MRTX-EX185 formic exhibits broad-spectrum binding properties with IC50s of 110, 290, 130 and 240 nM for KRAS WT, KRAS (G12C), KRAS (Q61H), KRAS (G13D). MRTX-EX185 formic also binds GDP-loaded HRAS. MRTX-EX185 formic can be used to study various RAS-driven tumors (such as pancreatic cancer) .
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RSC-1255
0 ImagesRSC-1255 is a potent and selective Vacuolar H⁺-ATPase (V-ATPase) inhibitor that directly binds the mammalian V-ATPase complex with a Kd = 23 nM. RSC-1255 exhibits preferential cytotoxicity toward KRAS-mutant cancer cells, especially KRASG13D and KRASG12V cells. RSC-1255 induces apoptosis and blocks lysosomal acidification, autophagy, and macropinocytosis in cancer cells. RSC-1255 can be used for the study of KRAS-driven lung and colon cancers.
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KRAS G12C inhibitor 67
0 ImagesKRAS G12C inhibitor 67 (Example 35) is an orally active KRAS G12C inhibitor. KRAS G12C inhibitor 67 inhibits pERK and active KRas. KRAS G12C inhibitor 67 selectively inhibits the growth of various KRAS G12C mutant tumor cell lines. KRAS G12C inhibitor 67 exhibits anticancer activity against esophageal cancer, bladder cancer, colorectal cancer, lung cancer, and pancreatic cancer.
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ACBI-4
0 ImagesCat. No.: HY-176792CAS No.: 3097985-19-5ACBI-4 is a selective GTP-loaded active state of KRAS (KRAS(on)) PROTAC degrader, with Kd values of 141 nM against KRASG12R. ACBI-4 forms a stable ternary complex with VHL, triggering ubiquitination and KRAS degradation via the ubiquitin-proteasome system. ACBI-4 induces antiproliferative effects in KRAS mutant-driven cancer cells. ACBI-4 can be used for the research of KRAS mutant-driven cancer.
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TH-Z827
0 ImagesCat. No.: HY-153663CAS No.: 2847881-81-4TH-Z827 is a selective KRASG12D inhibitor that exhibits activity against GDP-bound and GMPPNP-bound KRASG12D, but shows no activity against KRAS (WT) and KRASG12C. TH-Z827 blocks the KRASG12D-CRAF interaction with a IC50 value of 42 μM. TH-Z827 can be used for the research of pancreatic cancer.
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MCB-294
0 ImagesCat. No.: HY-176785SPurity: 98.04%MCB-294 is a dual-state pan-KRAS inhibitor that selectively inhibits KRAS over NRAS and HRAS. MCB-294 capable of binding both the active (GTP-bound) and inactive (GDP-bound) forms of KRAS with Kds of approximately 1 pM and 10 nM, respectively. MCB-294 broadly impairs the growth of hTERT-HPNE cells expressing G12D, G12C, G12V, G12S, G13D, and wild-type KRAS, with IC50s of approximately 700 nM. MCB-294 induces irreversible apoptosis in KRAS-mutated tumors. MCB-294 effectively suppress KRASG12C inhibitor-resistant cancer cells and remodel the tumor immune microenvironment. MCB-294 can be used for the study of pancreatic cancer, colorectal cancer and lung cancer.
