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ERK Antibodies

Santa Cruz Biotechnology, Inc. offers a broad range of ERK antibodies. Select ERK antibodies from several monoclonal and/or polyclonal ERK antibodies listed below. View detailed ERK antibody specifications by linking to the specific product blocks. Select appropriate ERK antibodies for your research by isotype, epitope, applications and species reactivity. ERK gene silencer products in siRNA, shRNA Plasmid, shRNA Lentiviral Particle, CRISPR/Cas9 Knockout and CRISPR Double Nickase Plasmid formats are also available as well as CRISPR/dCas9 Activation Plasmids and CRISPR Lenti Activation Systems for gene activation.

Introducing HOVERcruz™,

a unique system for rapid identification of ERK Antibodies. Hover over the icon next to the product names in the table to see representative data for that product.

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See chemical ERK Inhibitors or chemical ERK Activators for functional analysis of cellular responses to ERK.

Also see additional ERK Antibodies including, ERK 1, ERK 2, ERK 3, ERK 4, ERK 5

NOME DO PRODUTOnumero de catalogoIsotipoEpitopoUso e aplicacaoespecieCITATIONSRATING
ERK 1/2 (C-9)
sc-514302camundongo IgG2a101-172 (h)WB, IP, IF, IHC(P), ELISAm, r, h5
ERK 1/2 (H-72)
sc-292838coelho IgG101-172 (h)WB, IP, IF, ELISAm, r, h45
ERK 1/2 (MK1)
sc-135900camundongo IgG1325-345 (r)WB, IP, IFm, r, h92
ERK 1 (E-6)
sc-271270camundongo IgG1291-335 (r) WB, IP, IF, IHC(P), ELISAm, r, h, e, c, b, p11
ERK 1 (G-12)
sc-376852camundongo IgG1341-367 (r)WB, IP, IF, ELISAm, r, h, chicken, frog1
ERK 1 (G-8)
sc-271269camundongo IgG2b291-335 (r) WB, IP, IF, IHC(P), ELISAm, r, h, e, c, b, p2
ERK 1 (E-12)
sc-271291camundongo IgG3291-335 (h)WB, IP, IF, IHC(P), ELISAm, r, h, e, c, b, p1
ERK 1 (K-23)
sc-94coelho IgGsubdomain XI (r)WB, IP, IF, IHC(P), FCM, ELISAm, r, h, e, b, p, c, a, Xenopus, zebrafish647
ERK 1 (C-16)
sc-93coelho IgGC-terminal (r)WB, IP, IF, IHC(P), FCM, ELISAm, r, h, e, b, p, c, a, Xenopus, zebrafish531
ERK 2 (C-8)
sc-271458camundongo IgG2b276-333 (r)WB, IP, IF, IHC(P), ELISAm, r, h, c, b, p, a2
ERK 2 (C-14)
sc-154coelho IgGC-terminal (r)WB, IP, IF, IHC(P), FCM, ELISAm, r, h, e, b, p, c, a, zebrafish, Xenopus922
ERK 2 (D-2)
sc-1647camundongo IgG2bC-terminal (h)WB, IP, IF, IHC(P), FCM, ELISAm, r, h, c, b, p, a245
ERK 2 (H-9)
sc-271451camundongo IgG2a276-333 (r)WB, IP, IF, IHC(P), ELISAm, r, h, c, b, p, a3
ERK 2 (K-23)
sc-153coelho IgGsubdomain XI (r)WB, IP, IF, FCM, ELISAm, r, h, e, b, p, c, a, Xenopus, zebrafish, Drosophila112
ERK 2 (4C11C11C4)
sc-65981camundongo IgG2aFL (h)WB, IP, IF, IHC(P), ELISAm, r, h1
ERK 2 (6H3)
sc-81459camundongo IgG1N-terminal (h)WB, IPm, r, h2
ERK 2 (12A4)
sc-81457camundongo IgG1200-250 (h)WB, IPm, r, h5
ERK 2 (6G11)
sc-81458camundongo IgG1C-terminal (h)WB, IPm, r, h3
ERK 2 (33)
sc-136288camundongo IgG2b219-358 (r)WB, IP, IF, IHC(P)m, r, h1
ERK 3 (B-10)
sc-365234camundongo IgG1345-377 (r)WB, IP, IF, IHC(P), ELISAm, r, h, e, c, p
ERK 3 (G-2)
sc-393371camundongo IgG2b304-339 (r)WB, IP, IF, ELISAm, r, hNEW
ERK 3 (E-3)
sc-374239camundongo IgG1565-721 (h)WB, IP, IF, IHC(P), ELISAhumano
ERK 3 (I-15)
sc-156coelho IgGinternal (r)WB, IP, IF, IHC(P), FCM, ELISAm, r, h, e, c, p10
ERK 3 (D-23)
sc-155coelho IgGinternal (r)WB, IP, IF, FCM, ELISAm, r, h, e, c, b, p, a5
ERK 4 (Y-19)
sc-68170coelho IgGInternal (h)WB, IP, IF, ELISAm, r, h, p, e, b
ERK 4 (N-20)
sc-68169coelho IgGN-terminal (h)WB, IP, IF, ELISAm, r, h, c, b, p, e2
ERK 5 (C-11)
sc-393405camundongo IgG1786-815 (h)WB, IP, IF, ELISAm, r, h1
ERK 5 (C-7)
sc-398015camundongo IgG1671-698 (h)WB, IP, IF, IHC(P), ELISAm, r, h, c, bNEW
ERK 5 (C-20)
sc-1284goat IgGC-terminal (h)WB, IP, IF, IHC(P), FCM, ELISAm, r, h, c, b17
ERK 5 (N-19)
sc-1286goat IgGN-terminal (h)WB, IP, IF, ELISAm, r, h3
ERK 5 (L-19)
sc-1285goat IgGC-terminal (h)WB, IP, IF, ELISAm, r, h, c, b4
ERK 5 (H-300)
sc-5626coelho IgG516-815 (h)WB, IF, IHC(P), FCM, ELISAm, r, h12
ERK 5 (12F2)
sc-81460camundongo IgG1N-terminal (h)WB, IPm, r, h1

Phospho-Specific ERK Antibodies

NOME DO PRODUTOnumero de catalogoIsotipoEpitopoUso e aplicacaoespecieCITATIONSRATING
p-ERK (E-4)
sc-7383camundongo IgG2aTyr 204 (h)WB, IP, IF, IHC(P), ELISAm, r, h, e, c, b, p, a1060
p-ERK 5 (1.T218/Y220)
sc-135760camundongo IgG1Thr 218/Tyr 220 (h)WB, IP, ELISAhumano3
p-ERK 5 (36.T218/Y220)
sc-135761camundongo IgG1Thr 218/Tyr 220 (h)WB, IP, IHC(P), ELISAhumano1
p-ERK 1/2 (pT202/pY204.22A)
sc-136521camundongo IgG1Thr 202/Tyr 204 (r)WB, IF, IHC(P)m, r, h11
p-ERK 1/2 (12D4)
sc-81492camundongo IgG1Thr 202/Tyr 204 (h)WB, IP, IFm, r, h30
p-ERK (Tyr 204)
sc-7976goat IgGTyr 204 (h)WB, IP, IF, IHC(P), ELISAm, r, h, zebrafish, Drosophila, C. elegans, Xenopus, e, c, b, p, a96
p-ERK 1/2 (Thr 202/Tyr 204)
sc-16982goat IgGThr 202/Tyr 204WB, IP, IF, IHC(P), ELISAm, r, h119
p-ERK 1/2 (Thr 177 / Thr 160)-R
sc-23759-Rcoelho IgGThr 177/160 (h)WB, IP, IF, ELISAm, r, h25
p-ERK 1/2 (Thr 177)-R
sc-16981-Rcoelho IgGThr 177 (h)WB, IP, IF, ELISAm, r, h11
p-ERK 1/2 (Thr 202)
sc-101760coelho IgGThr 202 (h)WB, IP, IF, IHC(P)m, r, h28
p-ERK 1/2 (Tyr 204)
sc-101761coelho IgGTyr 204 (h)WB, IP, IF, IHC(P)m, r, h23
p-ERK 5 (Thr 218/Tyr 220)
sc-16564goat IgGThr 218/Tyr 220 (h)WB, IP, IF, ELISAm, r, h, c, b9

ERK CRISPR Knockout, HDR and Nickase Knockout Plasmids include:

NOME DO PRODUTOnumero de catalogoespecieUso e aplicacaoMARKERCITATIONS
ERK 1 CRISPR/Cas9 KO Plasmid (h2)
sc-400010-KO-2humanoGene KnockoutNEW
ERK 1 HDR Plasmid (h2)
sc-400010-HDR-2humanoGene KnockoutNEW
ERK 1 Double Nickase Plasmid (h)
sc-400010-NIChumanoGene KnockoutPuromycinNEW
ERK 1 Double Nickase Plasmid (h2)
sc-400010-NIC-2humanoGene KnockoutPuromycinNEW
ERK 2 CRISPR/Cas9 KO Plasmid (h)
sc-400043humanoGene KnockoutGFPNEW
ERK 2 HDR Plasmid (h)
sc-400043-HDRhumanoHomology Directed RepairPuromycinNEW
ERK 2 Double Nickase Plasmid (h)
sc-400043-NIChumanoGene KnockoutPuromycinNEW
ERK 2 Double Nickase Plasmid (h2)
sc-400043-NIC-2humanoGene KnockoutPuromycinNEW
ERK 5 CRISPR/Cas9 KO Plasmid (h)
sc-400891humanoGene KnockoutGFPNEW
ERK 5 HDR Plasmid (h)
sc-400891-HDRhumanoHomology Directed RepairPuromycinNEW
ERK 5 Double Nickase Plasmid (h)
sc-400891-NIChumanoGene KnockoutPuromycinNEW
ERK 5 Double Nickase Plasmid (h2)
sc-400891-NIC-2humanoGene KnockoutPuromycinNEW
ERK 3 CRISPR/Cas9 KO Plasmid (h)
sc-403457humanoGene KnockoutGFPNEW
ERK 3 HDR Plasmid (h)
sc-403457-HDRhumanoHomology Directed RepairPuromycinNEW
ERK 3 Double Nickase Plasmid (h)
sc-403457-NIChumanoGene KnockoutPuromycinNEW
ERK 3 Double Nickase Plasmid (h2)
sc-403457-NIC-2humanoGene KnockoutPuromycinNEW
ERK 4 CRISPR/Cas9 KO Plasmid (h)
sc-406660humanoGene KnockoutGFPNEW
ERK 4 HDR Plasmid (h)
sc-406660-HDRhumanoHomology Directed RepairPuromycinNEW
ERK 4 Double Nickase Plasmid (h)
sc-406660-NIChumanoGene KnockoutPuromycinNEW
ERK 4 Double Nickase Plasmid (h2)
sc-406660-NIC-2humanoGene KnockoutPuromycinNEW
ERK 5 CRISPR/Cas9 KO Plasmid (m)
sc-423907camundongoGene KnockoutGFPNEW
ERK 5 HDR Plasmid (m)
sc-423907-HDRcamundongoHomology Directed RepairPuromycinNEW
ERK 5 Double Nickase Plasmid (m)
sc-423907-NICcamundongoGene KnockoutPuromycinNEW
ERK 5 Double Nickase Plasmid (m2)
sc-423907-NIC-2camundongoGene KnockoutPuromycinNEW
ERK 2 CRISPR/Cas9 KO Plasmid (m)
sc-424048camundongoGene KnockoutGFPNEW
ERK 2 HDR Plasmid (m)
sc-424048-HDRcamundongoHomology Directed RepairPuromycinNEW
ERK 2 Double Nickase Plasmid (m)
sc-424048-NICcamundongoGene KnockoutPuromycinNEW
ERK 2 Double Nickase Plasmid (m2)
sc-424048-NIC-2camundongoGene KnockoutPuromycinNEW
ERK 1 CRISPR/Cas9 KO Plasmid (m)
sc-424052camundongoGene KnockoutGFPNEW
ERK 1 HDR Plasmid (m)
sc-424052-HDRcamundongoHomology Directed RepairPuromycinNEW
ERK 1 Double Nickase Plasmid (m)
sc-424052-NICcamundongoGene KnockoutPuromycinNEW
ERK 1 Double Nickase Plasmid (m2)
sc-424052-NIC-2camundongoGene KnockoutPuromycinNEW
ERK 3 CRISPR/Cas9 KO Plasmid (m)
sc-424486camundongoGene KnockoutGFPNEW
ERK 3 HDR Plasmid (m)
sc-424486-HDRcamundongoHomology Directed RepairPuromycinNEW
ERK 3 Double Nickase Plasmid (m)
sc-424486-NICcamundongoGene KnockoutPuromycinNEW
ERK 3 Double Nickase Plasmid (m2)
sc-424486-NIC-2camundongoGene KnockoutPuromycinNEW
ERK 4 CRISPR/Cas9 KO Plasmid (m)
sc-432558camundongoGene KnockoutGFPNEW
ERK 4 HDR Plasmid (m)
sc-432558-HDRcamundongoHomology Directed RepairPuromycinNEW
ERK 4 Double Nickase Plasmid (m)
sc-432558-NICcamundongoGene KnockoutPuromycinNEW
ERK 4 Double Nickase Plasmid (m2)
sc-432558-NIC-2camundongoGene KnockoutPuromycinNEW

ERK CRISPR Activation Plasmids include:

NOME DO PRODUTOnumero de catalogoespecieUso e aplicacaoMARKERCITATIONS
ERK 1 CRISPR Activation Plasmid (h)
sc-400010-ACThumanoGene ActivationPuro, Blast, HygroNEW
ERK 1 CRISPR Activation Plasmid (h2)
sc-400010-ACT-2humanoGene ActivationPuro, Blast, HygroNEW
ERK 1 Lentiviral Activation Particles (h)
sc-400010-LAChumanoGene ActivationPuro, Blast, HygroNEW
ERK 1 Lentiviral Activation Particles (h2)
sc-400010-LAC-2humanoGene ActivationPuro, Blast, HygroNEW
ERK 2 CRISPR Activation Plasmid (h)
sc-400043-ACThumanoGene ActivationPuro, Blast, HygroNEW
ERK 2 CRISPR Activation Plasmid (h2)
sc-400043-ACT-2humanoGene ActivationPuro, Blast, HygroNEW
ERK 2 Lentiviral Activation Particles (h)
sc-400043-LAChumanoGene ActivationPuro, Blast, HygroNEW
ERK 2 Lentiviral Activation Particles (h2)
sc-400043-LAC-2humanoGene ActivationPuro, Blast, HygroNEW
ERK 5 CRISPR Activation Plasmid (h)
sc-400891-ACThumanoGene ActivationPuro, Blast, HygroNEW
ERK 5 CRISPR Activation Plasmid (h2)
sc-400891-ACT-2humanoGene ActivationPuro, Blast, HygroNEW
ERK 5 Lentiviral Activation Particles (h)
sc-400891-LAChumanoGene ActivationPuro, Blast, HygroNEW
ERK 5 Lentiviral Activation Particles (h2)
sc-400891-LAC-2humanoGene ActivationPuro, Blast, HygroNEW
ERK 3 CRISPR Activation Plasmid (h)
sc-403457-ACThumanoGene ActivationPuro, Blast, HygroNEW
ERK 3 CRISPR Activation Plasmid (h2)
sc-403457-ACT-2humanoGene ActivationPuro, Blast, HygroNEW
ERK 3 Lentiviral Activation Particles (h)
sc-403457-LAChumanoGene ActivationPuro, Blast, HygroNEW
ERK 3 Lentiviral Activation Particles (h2)
sc-403457-LAC-2humanoGene ActivationPuro, Blast, HygroNEW
ERK 4 CRISPR Activation Plasmid (h)
sc-406660-ACThumanoGene ActivationPuro, Blast, HygroNEW
ERK 4 CRISPR Activation Plasmid (h2)
sc-406660-ACT-2humanoGene ActivationPuro, Blast, HygroNEW
ERK 4 Lentiviral Activation Particles (h)
sc-406660-LAChumanoGene ActivationPuro, Blast, HygroNEW
ERK 4 Lentiviral Activation Particles (h2)
sc-406660-LAC-2humanoGene ActivationPuro, Blast, HygroNEW
ERK 5 CRISPR Activation Plasmid (m)
sc-423907-ACTcamundongoGene ActivationPuro, Blast, HygroNEW
ERK 5 CRISPR Activation Plasmid (m2)
sc-423907-ACT-2camundongoGene ActivationPuro, Blast, HygroNEW
ERK 5 Lentiviral Activation Particles (m)
sc-423907-LACcamundongoGene ActivationPuro, Blast, HygroNEW
ERK 5 Lentiviral Activation Particles (m2)
sc-423907-LAC-2camundongoGene ActivationPuro, Blast, HygroNEW
ERK 2 CRISPR Activation Plasmid (m)
sc-424048-ACTcamundongoGene ActivationPuro, Blast, HygroNEW
ERK 2 CRISPR Activation Plasmid (m2)
sc-424048-ACT-2camundongoGene ActivationPuro, Blast, HygroNEW
ERK 2 Lentiviral Activation Particles (m)
sc-424048-LACcamundongoGene ActivationPuro, Blast, HygroNEW
ERK 2 Lentiviral Activation Particles (m2)
sc-424048-LAC-2camundongoGene ActivationPuro, Blast, HygroNEW
ERK 1 CRISPR Activation Plasmid (m)
sc-424052-ACTcamundongoGene ActivationPuro, Blast, HygroNEW
ERK 1 CRISPR Activation Plasmid (m2)
sc-424052-ACT-2camundongoGene ActivationPuro, Blast, HygroNEW
ERK 1 Lentiviral Activation Particles (m)
sc-424052-LACcamundongoGene ActivationPuro, Blast, HygroNEW
ERK 1 Lentiviral Activation Particles (m2)
sc-424052-LAC-2camundongoGene ActivationPuro, Blast, HygroNEW
ERK 3 CRISPR Activation Plasmid (m)
sc-424486-ACTcamundongoGene ActivationPuro, Blast, HygroNEW
ERK 3 CRISPR Activation Plasmid (m2)
sc-424486-ACT-2camundongoGene ActivationPuro, Blast, HygroNEW
ERK 3 Lentiviral Activation Particles (m)
sc-424486-LACcamundongoGene ActivationPuro, Blast, HygroNEW
ERK 3 Lentiviral Activation Particles (m2)
sc-424486-LAC-2camundongoGene ActivationPuro, Blast, HygroNEW
ERK 4 CRISPR Activation Plasmid (m)
sc-432558-ACTcamundongoGene ActivationPuro, Blast, HygroNEW
ERK 4 CRISPR Activation Plasmid (m2)
sc-432558-ACT-2camundongoGene ActivationPuro, Blast, HygroNEW
ERK 4 Lentiviral Activation Particles (m)
sc-432558-LACcamundongoGene ActivationPuro, Blast, HygroNEW
ERK 4 Lentiviral Activation Particles (m2)
sc-432558-LAC-2camundongoGene ActivationPuro, Blast, HygroNEW

ERK siRNA, shRNA Plasmid and shRNA Lentiviral Particles gene silencers include:

NOME DO PRODUTOnumero de catalogoespecieUso e aplicacaoMARKERCITATIONS
ERK 1 siRNA (h)
sc-29307humanoGene SilencingN/A9
ERK 1 shRNA Plasmid (h)
sc-29307-SHhumanoGene SilencingPuromycin9
ERK 1 shRNA (h) Lentiviral Particles
sc-29307-VhumanoGene SilencingPuromycin9
ERK 1 siRNA (m)
sc-29308camundongoGene SilencingN/A8
ERK 1 shRNA Plasmid (m)
sc-29308-SHcamundongoGene SilencingPuromycin8
ERK 1 shRNA (m) Lentiviral Particles
sc-29308-VcamundongoGene SilencingPuromycin8
ERK 2 siRNA (h)
sc-35335humanoGene SilencingN/A8
ERK 2 shRNA Plasmid (h)
sc-35335-SHhumanoGene SilencingPuromycin8
ERK 2 shRNA (h) Lentiviral Particles
sc-35335-VhumanoGene SilencingPuromycin8
ERK 2 siRNA (m)
sc-35336camundongoGene SilencingN/A6
ERK 2 shRNA Plasmid (m)
sc-35336-SHcamundongoGene SilencingPuromycin6
ERK 2 shRNA (m) Lentiviral Particles
sc-35336-VcamundongoGene SilencingPuromycin6
ERK 3 siRNA (h)
sc-35337humanoGene SilencingN/A
ERK 3 shRNA Plasmid (h)
sc-35337-SHhumanoGene SilencingPuromycin
ERK 3 shRNA (h) Lentiviral Particles
sc-35337-VhumanoGene SilencingPuromycin
ERK 3 siRNA (m)
sc-35338camundongoGene SilencingN/A
ERK 3 shRNA Plasmid (m)
sc-35338-SHcamundongoGene SilencingPuromycin
ERK 3 shRNA (m) Lentiviral Particles
sc-35338-VcamundongoGene SilencingPuromycin
ERK 5 siRNA (h)
sc-35339humanoGene SilencingN/A
ERK 5 shRNA Plasmid (h)
sc-35339-SHhumanoGene SilencingPuromycin
ERK 5 shRNA (h) Lentiviral Particles
sc-35339-VhumanoGene SilencingPuromycin
ERK 5 siRNA (m)
sc-35340camundongoGene SilencingN/A
ERK 5 shRNA Plasmid (m)
sc-35340-SHcamundongoGene SilencingPuromycin
ERK 5 shRNA (m) Lentiviral Particles
sc-35340-VcamundongoGene SilencingPuromycin
ERK 1 siRNA (h2)
sc-44205humanoGene SilencingN/A
ERK 1 shRNA Plasmid (h2)
sc-44205-SHhumanoGene SilencingPuromycin
ERK 1 shRNA (h2) Lentiviral Particles
sc-44205-VhumanoGene SilencingPuromycin
ERK 1 siRNA (m2)
sc-44206camundongoGene SilencingN/A
ERK 1 shRNA Plasmid (m2)
sc-44206-SHcamundongoGene SilencingPuromycin
ERK 1 shRNA (m2) Lentiviral Particles
sc-44206-VcamundongoGene SilencingPuromycin
ERK 2 siRNA (h2)
sc-44223humanoGene SilencingN/A1
ERK 2 shRNA Plasmid (h2)
sc-44223-SHhumanoGene SilencingPuromycin1
ERK 2 shRNA (h2) Lentiviral Particles
sc-44223-VhumanoGene SilencingPuromycin1
ERK 2 siRNA (m2)
sc-44224camundongoGene SilencingN/A1
ERK 2 shRNA Plasmid (m2)
sc-44224-SHcamundongoGene SilencingPuromycin1
ERK 2 shRNA (m2) Lentiviral Particles
sc-44224-VcamundongoGene SilencingPuromycin1
ERK 4 siRNA (h)
sc-62280humanoGene SilencingN/A
ERK 4 shRNA Plasmid (h)
sc-62280-SHhumanoGene SilencingPuromycin
ERK 4 shRNA (h) Lentiviral Particles
sc-62280-VhumanoGene SilencingPuromycin
ERK 4 siRNA (m)
sc-62281camundongoGene SilencingN/A
ERK 4 shRNA Plasmid (m)
sc-62281-SHcamundongoGene SilencingPuromycin
ERK 4 shRNA (m) Lentiviral Particles
sc-62281-VcamundongoGene SilencingPuromycin
ERK 1 siRNA (r)
sc-156030ratoGene SilencingN/A1
ERK 1 shRNA Plasmid (r)
sc-156030-SHratoGene Silencing1
ERK 1 shRNA (r) Lentiviral Particles
sc-156030-VratoGene Silencing1
ERK 2 siRNA (r)
sc-156031ratoGene SilencingN/A2
ERK 2 shRNA Plasmid (r)
sc-156031-SHratoGene Silencing2
ERK 2 shRNA (r) Lentiviral Particles
sc-156031-VratoGene Silencing2
ERK 1 siRNA (bovine)
sc-270002bovineGene SilencingN/A
ERK 1 shRNA Plasmid (bovine)
sc-270002-SHbovineGene Silencing
ERK 1 shRNA (bovine) Lentiviral Particles
sc-270002-VbovineGene Silencing

The activation of signal transduction pathways by growth factors, hormones and neurotransmitters is mediated through two closely related MAP kinases, p44 and p42, designated extracellular-signal related kinase 1 (ERK 1) and ERK 2, respectively. ERK proteins are regulated by dual phosphorylation at specific tyrosine and threonine sites mapping within a characteristic Thr-Glu-Tyr motif. Phosphorylation at both the Thr and Tyr residues is required for full enzymatic activation. In response to activation, MAP kinases phosphorylate downstream components on serine and threonine. Upstream MAP kinase regulators include MAP kinase kinase (MEK), MEK kinase and Raf-1. Additional ERK family members include ERK 3, ERK4, ERK5 and ERK6.