SAXSdb — 6cx0

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1. Protein Identity and Related Structures Protein Identity & Related Structures

Two pore calcium channel protein 1

Arabidopsis thaliana

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	CALCIUM ION × 10 (1S,3R)-1-(3-{[4-(2-fluorophenyl)piperazin-1-yl]methyl}-4-methoxyphenyl)-2,3,4,9-tetrahydro-1H-beta-carboline-3-carboxylic acid × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TPC1_ARATH
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–723； UniProt 12–733

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	6cx0
Deposition date deposition_date	2018-04-02
Structure title title	Structure of AtTPC1 D376A
Keywords keywords	Ion channel, Two-pore channel, TPC1, resting-state, closed, inactive, MEMBRANE PROTEIN, membrane protein-inhibitor complex; membrane protein/inhibitor
Experimental Method method	X-RAY DIFFRACTION

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

6cx0__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

6cx0__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

6cx0__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	37.53 Å
Rg (electron density)	36.46 Å
Total Rg	37.00 Å
Atom count	10184
Residues	1238
Excluded volume	185870 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`6cx0__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Description description	Two pore calcium channel protein 1
Molecular weight formula_weight	84310.2 kDa
Mutation mutation	D376A
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	5092

MGGGGTDRVRRSEAITHGTPFQKAAALVDLAEDGIGLPVEILDQSSFGESARYYFIFTRLDLIWSLNYFALLFLNFFEQPLWCEKNPKPSCKDRDYYYLGELPYLTNAESIIYEVITLAILLVHTFFPISYEGSRIFWTSRLNLVKVACVVILFVDVLVDFLYLSPLAFDFLPFRIAPYVRVIIFILSIRELRDTLVLLSGMLGTYLNILALWMLFLLFASWIAFVMFEDTQQGLTVFTSYGATLYQMFILFTTSNNPDVWIPAYKSSRWSSVFFVLYVLIGVYFVTNLILAVVYDSFKEQLAKQVSGMDQMKRRMLEKAFGLIDSDKNGEIDKNQCIKLFEQLTNYRTLPKISKEEFGLIFDELDDTRDFKINKDEFADLCQAIALRFQKEEVPSLFEHFPQIYHSALSQQLRAFVRSPNFGYAISFILIINFIAVVVETTLDIEESSAQKPWQVAEFVFGWIYVLEMALKIYTYGFENYWREGANRFDFLVTWVIVIGETATFITPDENTFFSNGEWIRYLLLARMLRLIRLLMNVQRYRAFIATFITLIPSLMPYLGTIFCVLCIYCSIGVQVFGGLVNAGNKKLFETELAEDDYLLFNFNDYPNGMVTLFNLLVMGNWQVWMESYKDLTGTWWSITYFVSFYVITILLLLNLVVAFVLEAFFTELDLEEEEKCQGQDSQEKRNRRRSAGSKSRSQRVDTLLHHMLGDELSKPECSTSDTLVPR

Source Source

Source organism organism	Arabidopsis thaliana
Common name common_name	Mouse-ear cress
NCBI taxonomy ID ncbi_taxonomy_id	3702
Host organism host_organism	Saccharomyces cerevisiae

Entity 2 Entity 2 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	man
Copy count entity_count	5

Entity 3 Entity 3 non-polymer

Description description	(1S,3R)-1-(3-{[4-(2-fluorophenyl)piperazin-1-yl]methyl}-4-methoxyphenyl)-2,3,4,9-tetrahydro-1H-beta-carboline-3-carboxylic acid
Molecular weight formula_weight	514.6 kDa
Source method src_method	man
Copy count entity_count	1

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6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

Domain ID domain_id	6cx0A01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	120 — Four Helix Bundle (Hemerythrin (Met), subunit A)
Homologous superfamily homologous superfamily	350 — Voltage-gated potassium channels. Chain C

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Unit-cell length a length_a	88.470 Å
Unit-cell length b length_b	154.420 Å
Unit-cell length c length_c	218.450 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

Space group space_group	C 2 2 21
Space-group number int_tables_number	20
Crystal system crystal_system	—

Resolution resolution	3.501 Å
Low-resolution limit resolution_low	41.000 Å
R factor r_factor	0.3199
R_work r_work	0.3184
R_free r_free	0.3519

Structure of AtTPC1 D376A

1. Protein Identity and Related Structures Protein Identity & Related Structures

Two pore calcium channel protein 1

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

6cx0__assembly_1__model_1

6cx0__assembly_1__model_1 | I(q)

6cx0__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

7. Citations (1)

Structure of AtTPC1 D376A

1. Protein Identity and Related Structures Protein Identity & Related Structures

Two pore calcium channel protein 1

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

6cx0__assembly_1__model_1

6cx0__assembly_1__model_1 | I(q)

6cx0__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

7. Citations (1)