SAXSdb — 4y5q

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

Calmodulin-domain protein kinase 1, putative

Cryptosporidium parvum Iowa II

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	CALCIUM ION × 4 ADENOSINE MONOPHOSPHATE × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A3FQ16_CRYPI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 18–486； UniProt 70–538

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	4y5q
Deposition date deposition_date	2015-02-11
Structure title title	Activated Calcium-Dependent Protein Kinase 1 from Cryptosporidium parvum (CpCDPK1) in complex with AMP
Keywords keywords	;serine/threonine protein kinase, transferase, calcium-binding, ATP-binding, calmodulin, bumped kinase inhibitor, Structural Genomics, Medical Structural Genomics of Pathogenic Protozoa, MSGPP ;; TRANSFERASE
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.

4y5q__assembly_1__model_1

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

Download this curve (.dat)

4y5q__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4y5q__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	24.90 Å
Rg (electron density)	23.88 Å
Total Rg	24.70 Å
Atom count	3629
Residues	449
Excluded volume	64833 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4y5q__assembly_1__model_1`	monomeric （1）	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 (4)

Entity 1 Entity 1 polymer

Description description	Calmodulin-domain protein kinase 1, putative
Molecular weight formula_weight	56152.8 kDa
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	3760

MHHHHHHSSGRENLYFQGTFAERYNIVCMLGKGSFGEVLKCKDRITQQEYAVKVINKASAKNKDTSTILREVELLKKLDHPNIMKLFEILEDSSSFYIVGELYTGGELFDEIIKRKRFSEHDAARIIKQVFSGITYMHKHNIVHRDLKPENILLESKEKDCDIKIIDFGLSTCFQQNTKMKDRIGTAYYIAPEVLRGTYDEKCDVWSAGVILYILLSGTPPFYGKNEYDILKRVETGKYAFDLPQWRTISDDAKDLIRKMLTFHPSLRITATQCLEHPWIQKYSSETPTISDLPSLESAMTNIRQFQAEKKLAQAALLYMASKLTTLDETKQLTEIFRKLDTNNDGMLDRDELVRGYHEFMRLKGVDSNSLIQNEGSTIEDQIDSLMPLLDMDGSGSIEYSEFIASAIDRTILLSRERMERAFKMFDKDGSGKISTKELFKLFSQADSSIQMEELESIIEQVDNNKDGEVDFNEFVEMLQNFVRNE

Source Source

Source organism organism	Cryptosporidium parvum Iowa II
NCBI taxonomy ID ncbi_taxonomy_id	353152
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 3 Entity 3 non-polymer

Description description	ADENOSINE MONOPHOSPHATE
Molecular weight formula_weight	347.2 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	115

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6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	4y5qA01
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	4y5qA02
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

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Unit-cell length a length_a	60.070 Å
Unit-cell length b length_b	55.890 Å
Unit-cell length c length_c	81.450 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	104.79 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	2

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	39.380 Å
R factor r_factor	0.1855
R_work r_work	0.1832
R_free r_free	0.2296

Activated Calcium-Dependent Protein Kinase 1 from Cryptosporidium parvum (CpCDPK1) in complex with AMP

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

Calmodulin-domain protein kinase 1, putative

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

4y5q__assembly_1__model_1

4y5q__assembly_1__model_1 | I(q)

4y5q__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (2)

Activated Calcium-Dependent Protein Kinase 1 from Cryptosporidium parvum (CpCDPK1) in complex with AMP

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

Calmodulin-domain protein kinase 1, putative

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

4y5q__assembly_1__model_1

4y5q__assembly_1__model_1 | I(q)

4y5q__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (2)