1IAH | pdb_00001iah

CRYSTAL STRUCTURE OF THE ATYPICAL PROTEIN KINASE DOMAIN OF A TRP CA-CHANNEL, CHAK (ADP-MG COMPLEX)

PDB DOI: https://doi.org/10.2210/pdb1IAH/pdb

Classification: TRANSFERASE
Organism(s): Mus musculus
Expression System: Spodoptera frugiperda
Mutation(s): No

Deposited: 2001-03-22 Released: 2001-06-06
Deposition Author(s): Yamaguchi, H., Matsushita, M., Nairn, A.C., Kuriyan, J.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.40 Å
R-Value Free:
0.249 (Depositor)
R-Value Work:
0.215 (Depositor), 0.226 (DCC)
R-Value Observed:
0.216 (Depositor)

wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 1.3 of the entry. See complete history.

Literature

Crystal structure of the atypical protein kinase domain of a TRP channel with phosphotransferase activity.

Yamaguchi, H., Matsushita, M., Nairn, A.C., Kuriyan, J.

(2001) Mol Cell 7: 1047-1057

PubMed: 11389851 Search on PubMed
DOI: https://doi.org/10.1016/s1097-2765(01)00256-8
Primary Citation Related Structures:
1IA9, 1IAH, 1IAJ

PubMed Abstract:
Transient receptor potential (TRP) channels modulate calcium levels in eukaryotic cells in response to external signals. A novel transient receptor potential channel has the ability to phosphorylate itself and other proteins on serine and threonine residues. The catalytic domain of this channel kinase has no detectable sequence similarity to classical eukaryotic protein kinases and is essential for channel function. The structure of the kinase domain, reported here, reveals unexpected similarity to eukaryotic protein kinases in the catalytic core as well as to metabolic enzymes with ATP-grasp domains. The inclusion of the channel kinase catalytic domain within the eukaryotic protein kinase superfamily indicates a significantly wider distribution for this group of signaling proteins than suggested previously by sequence comparisons alone.

Organizational Affiliation

Howard Hughes Medical Institute, New York, NY 10021, USA.

Macromolecule Content

Total Structure Weight: 65.66 kDa
Atom Count: 4,809
Modeled Residue Count: 556
Deposited Residue Count: 560
Unique protein chains: 1

Macromolecules

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TRANSIENT RECEPTOR POTENTIAL-RELATED PROTEIN	A, B	280	Mus musculus	Mutation(s): 0 Gene Names: CHAK EC: 2.7.1.37 (PDB Primary Data), 2.7.11.1 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q923J1 (Mus musculus) Explore Q923J1 Go to UniProtKB: Q923J1
IMPC: MGI:1929996
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q923J1
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
ADP Query on ADP Download:Ideal Coordinates CCD File SDF format, chain D [auth A] SDF format, chain H [auth B] MOL2 format, chain D [auth A] MOL2 format, chain H [auth B] mmCIF format, chain D [auth A] mmCIF format, chain H [auth B]	D [auth A], H [auth B]	ADENOSINE-5'-DIPHOSPHATE C₁₀ H₁₅ N₅ O₁₀ P₂ XTWYTFMLZFPYCI-KQYNXXCUSA-N		Interactions Focus chain D [auth A] Focus chain H [auth B] Interactions & Density Focus chain D [auth A] Focus chain H [auth B]
DTT Query on DTT Download:Ideal Coordinates CCD File SDF format, chain G [auth B] MOL2 format, chain G [auth B] mmCIF format, chain G [auth B]	G [auth B]	2,3-DIHYDROXY-1,4-DITHIOBUTANE C₄ H₁₀ O₂ S₂ VHJLVAABSRFDPM-IMJSIDKUSA-N		Interactions Focus chain G [auth B] Interactions & Density Focus chain G [auth B]
ZN Query on ZN Download:Ideal Coordinates CCD File SDF format, chain C [auth A] SDF format, chain E [auth B] MOL2 format, chain C [auth A] MOL2 format, chain E [auth B] mmCIF format, chain C [auth A] mmCIF format, chain E [auth B]	C [auth A], E [auth B]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N		Interactions Focus chain C [auth A] Focus chain E [auth B] Interactions & Density Focus chain C [auth A] Focus chain E [auth B]
MG Query on MG Download:Ideal Coordinates CCD File SDF format, chain F [auth B] MOL2 format, chain F [auth B] mmCIF format, chain F [auth B]	F [auth B]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N		Interactions Focus chain F [auth B] Interactions & Density Focus chain F [auth B]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.40 Å
R-Value Free: 0.249 (Depositor)
R-Value Work: 0.215 (Depositor), 0.226 (DCC)
R-Value Observed: 0.216 (Depositor)

Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 108.961	α = 90
b = 135.458	β = 90
c = 113.204	γ = 90

Software Package:

Software Name	Purpose
AMoRE	phasing
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

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Entry History

Deposition Data

Released Date: 2001-06-06

Deposition Author(s):

Revision History (Full details and data files)

Version 1.0: 2001-06-06
Type: Initial release
Version 1.1: 2008-04-27
Changes: Version format compliance
Version 1.2: 2011-07-13
Changes: Version format compliance
Version 1.3: 2024-10-30
Changes: Data collection, Database references, Derived calculations, Structure summary