SAXSdb — 3ujg

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

Serine/threonine-protein kinase SRK2E

Arabidopsis thaliana

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	Protein phosphatase 2C 16 × 1 （Q9CAJ0） SULFATE ION × 3 MAGNESIUM ION × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SRK2E_ARATH
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 10–361； UniProt 11–362

Protein phosphatase 2C 16

Arabidopsis thaliana

UniProt Q9CAJ0

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	Serine/threonine-protein kinase SRK2E × 1 （Q940H6） SULFATE ION × 3 MAGNESIUM ION × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	P2C16_ARATH
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 11–350； UniProt 172–511

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	3ujg
Deposition date deposition_date	2011-11-07
Structure title title	Crystal structure of SnRK2.6 in complex with HAB1
Keywords keywords	SnRK2.6, kinase, protein phosphatase 2C, ABA signaling, SIGNALING PROTEIN; SIGNALING PROTEIN
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.

3ujg__assembly_1__model_1

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

Download this curve (.dat)

3ujg__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3ujg__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	28.11 Å
Rg (electron density)	27.58 Å
Total Rg	28.35 Å
Atom count	4795
Residues	605
Excluded volume	85388 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3ujg__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 (5)

Entity 1 Entity 1 polymer

Description description	Serine/threonine-protein kinase SRK2E
Molecular weight formula_weight	41053.5 kDa
EC 编号 ec_number	2.7.11.1
Mutation mutation	D296A, E297A
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	4941

MAHHHHHHADLPIMHDSDRYELVKDIGSGNFGVARLMRDKQSNELVAVKYIERGEKIDENVKREIINHRSLRHPNIVRFKEVILTPTHLAIVMEYASGGELFERICNAGRFSEDEARFFFQQLISGVSYCHAMQVCHRDLKLENTLLDGSPAPRLKICDFGYSKSSVLHSQPKSTVGTPAYIAPEVLLKKEYDGKVADVWSCGVTLYVMLVGAYPFEDPEEPKNFRKTIHRILNVQYAIPDYVHISPECRHLISRIFVADPAKRISIPEIRNHEWFLKNLPADLMNDNTMTTQFAASDQPGQSIEEIMQIIAEATVPPAGTQNLNHYLTGSLDIDDDMEEDLESDLDDLDIDSSGEIVYAM

Source Source

Source organism organism	Arabidopsis thaliana
Common name common_name	mouse-ear cress,thale-cress
NCBI taxonomy ID ncbi_taxonomy_id	3702
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	Protein phosphatase 2C 16
Molecular weight formula_weight	38472.0 kDa
EC 编号 ec_number	3.1.3.16
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

GSGSAGSAAGSNHLVKGRSVYELDCIPLWGTVSIQGNRSEMEDAFAVSPHFLKLPIKMLMGDHEGMSPSLTHLTGHFFGVYDGHGGHKVADYCRDRLHFALAEEIERIKDELCKRNTGEGRQVQWDKVFTSCFLTVDGEIEGKIGRAVVGSSDKVLEAVASETVGSTAVVALVCSSHIVVSNCGDSRAVLFRGKEAMPLSVDHKPDREDEYARIENAGGKVIQWQGARVFGVLAMSRSIGDRYLKPYVIPEPEVTFMPRSREDECLILASDGLWDVMNNQEVCEIARRRILMWHKKNGAPPLAERGKGIDPACQAAADYLSMLALQKGSKDNISIIVIDLKAQRKFKTRT

Source Source

Source organism organism	Arabidopsis thaliana
Common name common_name	mouse-ear cress,thale-cress
NCBI taxonomy ID ncbi_taxonomy_id	3702
Host organism host_organism	Escherichia coli

Entity 3 Entity 3 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 4 Entity 4 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	146

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d3ujga_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.144 — Protein kinase-like (PK-like)
Superfamily Superfamily superfamily	d.144.1 — Protein kinase-like (PK-like)
Family Family family	d.144.1.0 — automated matches

CATH v4.4 (3 domains)

Domain ID domain_id	3ujgA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	200 — Phosphorylase Kinase; domain 1
Homologous superfamily homologous superfamily	20 — Phosphorylase Kinase; domain 1

Domain ID domain_id	3ujgA02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	510 — Transferase(Phosphotransferase); domain 1
Homologous superfamily homologous superfamily	10 — Transferase(Phosphotransferase) domain 1

Domain ID domain_id	3ujgB00
Class class	3 — Alpha Beta
Architecture architecture	60 — 4-Layer Sandwich
Topology topology	40 — Phosphatase 2c; domain 1
Homologous superfamily homologous superfamily	10 — PPM-type phosphatase domain

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Unit-cell length a length_a	154.835 Å
Unit-cell length b length_b	154.835 Å
Unit-cell length c length_c	70.966 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	I 4
Space-group number int_tables_number	79
Crystal system crystal_system	—

Resolution resolution	2.600 Å
Low-resolution limit resolution_low	29.780 Å
R factor r_factor	0.2092
R_work r_work	0.2070
R_free r_free	0.2381

Crystal structure of SnRK2.6 in complex with HAB1

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

Serine/threonine-protein kinase SRK2E

State in the Current Structure

Other States of the Same Protein in the Database

Protein phosphatase 2C 16

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

3ujg__assembly_1__model_1

3ujg__assembly_1__model_1 | I(q)

3ujg__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (1 domains)

CATH v4.4 (3 domains)

7. Citations (1)

Crystal structure of SnRK2.6 in complex with HAB1

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

Serine/threonine-protein kinase SRK2E

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Protein phosphatase 2C 16

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

3ujg__assembly_1__model_1

3ujg__assembly_1__model_1 | I(q)

3ujg__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (1 domains)

CATH v4.4 (3 domains)

7. Citations (1)