8CHF | pdb_00008chf

Experimental Data Snapshot

wwPDB Validation 3D Report Full Report

This is version 1.2 of the entry. See complete history.

(2024) J Mol Biology 436: 168483-168483

PubMed Abstract:
RAF protein kinases are essential effectors in the MAPK pathway and are important cancer drug targets. Structural understanding of RAF activation is so far based on cryo-electron microscopy (cryo-EM) and X-ray structures of BRAF in different conformational states as inactive or active complexes with KRAS, 14-3-3 and MEK1. In this study, we have solved the first cryo-EM structures of CRAF ₂/14-3-3 ₂ at 3.4 Å resolution and CRAF ₂/14-3-3 ₂/MEK1 ₂ at 4.2 Å resolution using CRAF kinase domain expressed as constitutively active Y340D/Y341D mutant in insect cells. The overall architecture of our CRAF ₂/14-3-3 ₂ and CRAF ₂/14-3-3 ₂/MEK1 ₂ cryo-EM structures is highly similar to corresponding BRAF structures in complex with 14-3-3 or 14-3-3/MEK1 and represent the activated dimeric RAF conformation. Our CRAF cryo-EM structures provide additional insights into structural understanding of the activated CRAF ₂/14-3-3 ₂/MEK1 ₂ complex.

Organizational Affiliation

Proteros biostructures GmbH, Bunsenstraße 7a, D-82152 Planegg-Martinsried, Germany.

Macromolecule Content

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
RAF proto-oncogene serine/threonine-protein kinase	A, B	648	Homo sapiens	Mutation(s): 1 Gene Names: RAF1, RAF EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for P04049 (Homo sapiens) Explore P04049 Go to UniProtKB: P04049
PHAROS: P04049 GTEx: ENSG00000132155
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	P04049
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Reference Sequence

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| 3D Structure

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
14-3-3 protein zeta isoform X1	C, D	247	Spodoptera frugiperda	Mutation(s): 0
UniProt
Find proteins for A0A9R0D7T1 (Spodoptera frugiperda) Explore A0A9R0D7T1 Go to UniProtKB: A0A9R0D7T1
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	A0A9R0D7T1
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Reference Sequence

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| 3D Structure

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Dual specificity mitogen-activated protein kinase kinase 1	E, F	393	Homo sapiens	Mutation(s): 2 Gene Names: MAP2K1, MEK1, PRKMK1 EC: 2.7.12.2
UniProt & NIH Common Fund Data Resources
Find proteins for Q02750 (Homo sapiens) Explore Q02750 Go to UniProtKB: Q02750
PHAROS: Q02750 GTEx: ENSG00000169032
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q02750
Sequence Annotations Expand
Reference Sequence

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
29L (Subject of Investigation/LOI) Query on 29L Download:Ideal Coordinates CCD File SDF format, chain H [auth B] SDF format, chain G [auth A] MOL2 format, chain H [auth B] MOL2 format, chain G [auth A] mmCIF format, chain H [auth B] mmCIF format, chain G [auth A]	G [auth A], H [auth B]	2-{4-[(1E)-1-(hydroxyimino)-2,3-dihydro-1H-inden-5-yl]-3-(pyridin-4-yl)-1H-pyrazol-1-yl}ethanol C₁₉ H₁₈ N₄ O₂ DEZZLWQELQORIU-RELWKKBWSA-N		Interactions Focus chain G [auth A] Focus chain H [auth B] Interactions & Density Focus chain G [auth A] Focus chain H [auth B]