4ae6

Structure and Function of the Human Sperm-Specific Isoform of Protein Kinase A (PKA) Catalytic Subunit Calpha 2

Method: X-RAY DIFFRACTION Dmax: 97.9 Å Quality: GOOD

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

CAMP-DEPENDENT PROTEIN KINASE CATALYTIC SUBUNIT ALPHA 2

HOMO SAPIENS

UniProt P17612

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 1–343 Non-standard monomer:Yes (specific site not provided by mmCIF) No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:20 % PEG 3350, 0.2 M POTASSIUM ACETATE, 5 % POLYPROPYLENE GLYCOL P400 Resolution 2.10 Å R-free 0.283
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 1–343 Non-standard monomer:Yes (specific site not provided by mmCIF) ACT ACETATE ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:20 % PEG 3350, 0.2 M POTASSIUM ACETATE, 5 % POLYPROPYLENE GLYCOL P400 Resolution 2.10 Å R-free 0.283

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

53 other PDB entries and 77 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name KAPCA_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–343; UniProt 1–343 Author chain B; PDBConstruct 1–343; UniProt 1–343

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.

SAXS scattering curve SAXS Profile

SAXS profile for 4ae6

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4ae6
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4ae6
Deposition date deposition_date2012-01-09
Structure title titleStructure and Function of the Human Sperm-Specific Isoform of Protein Kinase A (PKA) Catalytic Subunit Calpha 2
Keywords keywordsTRANSFERASE; TRANSFERASE
Experimental Method methodX-RAY DIFFRACTION

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier30.35
Radius of gyration Rg (electron density) rg_electron29.31
Forward intensity I(0) i083938000.00
Molecular weight molecular_weight75467.0 kDa
Excluded volume excluded_volume95933 ų
Envelope volume envelope_volume122140 ų
Hydration-shell volume shell_volume35169 ų
Envelope diameter envelope_diameter101.5
Shell Rg shell_rg36.21
Envelope Rg envelope_rg29.03
Shape Rg shape_rg29.26
Total Rg total_rg30.18
Total atoms total_atoms5336
Residues n_residues640
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax97.9
Rg (real space) rg_real30.35
Rg uncertainty (real space) rg_real_error0.64
I(0) (real space) i0_real8.3940e+07
I(0) uncertainty (real space) i0_real_error1.3110e+06
Rg (reciprocal space) rg_reciprocal30.35
I(0) (reciprocal space) i0_reciprocal83940000.0000
Solution quality estimate total_estimate0.8997
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary32.0
Skewness Skewness skewness0.298
Kurtosis Kurtosis kurtosis-0.529
Angular range angular_range— – 0.2600 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha19160000.0000
Real-space data points n_real_points53
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.923; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.985; Smooth: 0.938

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd4ae6a_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.144 — Protein kinase-like (PK-like)
Superfamily Superfamily superfamilyd.144.1 — Protein kinase-like (PK-like)
Family Family familyd.144.1.7 — Protein kinases, catalytic subunit
Domain ID domain_idd4ae6b_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.144 — Protein kinase-like (PK-like)
Superfamily Superfamily superfamilyd.144.1 — Protein kinase-like (PK-like)
Family Family familyd.144.1.7 — Protein kinases, catalytic subunit

CATH v4.4 (4 domains)

Domain ID domain_id4ae6A01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology510 — Transferase(Phosphotransferase); domain 1
Homologous superfamily homologous superfamily10 — Transferase(Phosphotransferase) domain 1
Domain ID domain_id4ae6A02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology200 — Phosphorylase Kinase; domain 1
Homologous superfamily homologous superfamily20 — Phosphorylase Kinase; domain 1
Domain ID domain_id4ae6B01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology510 — Transferase(Phosphotransferase); domain 1
Homologous superfamily homologous superfamily10 — Transferase(Phosphotransferase) domain 1
Domain ID domain_id4ae6B02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology200 — Phosphorylase Kinase; domain 1
Homologous superfamily homologous superfamily20 — Phosphorylase Kinase; domain 1

8. Citations (1)

9. Files and Curves (10)