SAXSdb — 1ctp

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

cAMP-DEPENDENT PROTEIN KINASE

Sus scrofa

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 4	cAMP-dependent protein kinase inhibitor, alpha form × 2 （P61925） MYRISTIC ACID × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	KAPCA_PIG
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain E； PDBConstruct 1–350； UniProt 1–350

cAMP-dependent protein kinase inhibitor, alpha form

OrganismNot specified

UniProt P61925

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 4	cAMP-DEPENDENT PROTEIN KINASE × 2 （P36887） MYRISTIC ACID × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	IPKA_HUMAN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain I； PDBConstruct 1–20； UniProt 6–25

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	1ctp
Deposition date deposition_date	1993-04-08
Structure title title	STRUCTURE OF THE MAMMALIAN CATALYTIC SUBUNIT OF CAMP-DEPENDENT PROTEIN KINASE AND AN INHIBITOR PEPTIDE DISPLAYS AN OPEN CONFORMATION
Keywords keywords	TRANSFERASE(PHOSPHOTRANSFERASE), TRANSFERASE-TRANSFERASE INHIBITOR complex; TRANSFERASE/TRANSFERASE 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.

1ctp__assembly_1__model_1

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

Download this curve (.dat)

1ctp__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1ctp__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	29.33 Å
Rg (electron density)	28.49 Å
Total Rg	29.08 Å
Atom count	5460
Residues	698
Excluded volume	97409 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1ctp__assembly_1__model_1`	tetrameric （4）	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	cAMP-DEPENDENT PROTEIN KINASE
Molecular weight formula_weight	40624.4 kDa
EC 编号 ec_number	2.7.1.37
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E
Atom count atom_count	2732

GNAAAAKKGSEQESVKEFLAKAKEDFLKKWENPAQNTAHLDQFERIKTLGTGSFGRVMLVKHKETGNHFAMKILDKQKVVKLKQIEHTLNEKRILQAVNFPFLVKLEYSFKDNSNLYMVMEYVPGGEMFSHLRRIGRFSEPHARFYAAQIVLTFEYLHSLDLIYRDLKPENLLIDQQGYIQVTDFGFAKRVKGRTWTLCGTPEYLAPEIILSKGYNKAVDWWALGVLIYEMAAGYPPFFADQPIQIYEKIVSGKVRFPSHFSSDLKDLLRNLLQVDLTKRFGNLKNGVNDIKNHKWFATTDWIAIYQRKVEAPFIPKFKGPGDTSNFDDYEEEEIRVSINEKCGKEFSEF

Source Source

Source organism organism	Sus scrofa
Common name common_name	pig
NCBI taxonomy ID ncbi_taxonomy_id	9823

Entity 2 Entity 2 polymer

Description description	cAMP-dependent protein kinase inhibitor, alpha form
Molecular weight formula_weight	2478.2 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	I

TTYADFIASGRTGRRNAIHD

Entity 3 Entity 3 non-polymer

Description description	MYRISTIC ACID
Molecular weight formula_weight	228.4 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	2

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6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1ctpe_
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.144.1.7 — Protein kinases, catalytic subunit

CATH v4.4 (2 domains)

Domain ID domain_id	1ctpE01
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	1ctpE02
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

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7. Citations (7)

;Structure of the mammalian catalytic subunit of cAMP-dependent protein kinase and an inhibitor peptide displays an open conformation. ;

Acta Crystallogr.,Sect.D (1993)

PMID: 15299513 · DOI: 10.1107/S0907444993002306 PRIMARY

Crystal-Structure of the Catalytic Subunit of Camp-Dependent Protein-Kinase Complexed with a Mgatp and Peptide Inhibitor

Biochemistry (1993)

;2.0 Angstroms Refined Crystal Structure of the Catalytic Subunit of Camp-Dependent Protein Kinase Complexed with a Peptide Inhibitor and Detergent ;

Acta Crystallogr.,Sect.D (1993)

;2.2 Angstroms Refined Crystal-Structure of the Catalytic Subunit of Camp-Dependent Protein-Kinase Complexed with Mnatp and a Peptide Inhibitor ;

Acta Crystallogr.,Sect.D (1993)

Crystal Structure of the Catalytic Subunit of Cyclic Adenosine Monophosphate-Dependent Protein Kinase

Science (1991)

Structure of a Peptide Inhibitor Bound to the Catalytic Subunit of Cyclic Adenosine Monophosphate-Dependent Protein Kinase

Science (1991)

Expression of the Catalytic Subunit of Camp-Dependent Protein Kinase in Escherichia Coli

J.Biol.Chem. (1989)

Unit-cell length a length_a	171.500 Å
Unit-cell length b length_b	171.500 Å
Unit-cell length c length_c	171.500 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	24

Space group space_group	P 41 3 2
Space-group number int_tables_number	213
Crystal system crystal_system	—

Resolution resolution	2.900 Å
Low-resolution limit resolution_low	7.000 Å
R factor r_factor	0.1900
R_work r_work	—
R_free r_free	—

STRUCTURE OF THE MAMMALIAN CATALYTIC SUBUNIT OF CAMP-DEPENDENT PROTEIN KINASE AND AN INHIBITOR PEPTIDE DISPLAYS AN OPEN CONFORMATION

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

cAMP-DEPENDENT PROTEIN KINASE

State in the Current Structure

Other States of the Same Protein in the Database

cAMP-dependent protein kinase inhibitor, alpha form

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

1ctp__assembly_1__model_1

1ctp__assembly_1__model_1 | I(q)

1ctp__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

CATH v4.4 (2 domains)

7. Citations (7)

STRUCTURE OF THE MAMMALIAN CATALYTIC SUBUNIT OF CAMP-DEPENDENT PROTEIN KINASE AND AN INHIBITOR PEPTIDE DISPLAYS AN OPEN CONFORMATION

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

cAMP-DEPENDENT PROTEIN KINASE

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

cAMP-dependent protein kinase inhibitor, alpha form

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

1ctp__assembly_1__model_1

1ctp__assembly_1__model_1 | I(q)

1ctp__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

CATH v4.4 (2 domains)

7. Citations (7)