5BX6: PKA

PKA in complex with a halogenated phthalazinone fragment compound. Determined by X-ray diffraction at 1.89 Å resolution. Released 14 Sept 2016.

Method: X-ray diffraction
Resolution: 1.89 Å
Organism: Homo sapiens
Chains: 2
Atoms: 3,276
Mol. weight: 43.65 kDa
Ligands: 495
Released: 14 Sept 2016

Explore 5BX6 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

5BX6 contains 19 α-helices and 15 β-strands across 2 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 17 helices, 14 β-strands

Element	Residues	Length	Sheet
α-helix	10-31	22
α-helix	40-42	3
β-strand	43-51	9	1
β-strand	55-62	8	1
β-strand	68-75	8	1
α-helix	76-81	6
α-helix	85-95	11
β-strand	103	1	2
α-helix	104-105	2
β-strand	106-111	6	1
β-strand	115-121	7	1
β-strand	127	1	2
α-helix	128-135	8
α-helix	140-159	20
β-strand	162-163	2	3
α-helix	169-171	3
β-strand	172-174	3	2
β-strand	180-182	3	2
β-strand	189-190	2	3
β-strand	195	1	4
β-strand	199-200	2	5
α-helix	202-204	3
α-helix	207-210	4
β-strand	215	1	4
α-helix	218-233	16
α-helix	243-252	10
α-helix	263-272	10
α-helix	289-292	4
α-helix	295-297	3
α-helix	302-306	5
α-helix	311-312	2

Chain B: 2 helices, 1 β-strand

Element	Residues	Length	Sheet
α-helix	6-11	6
α-helix	18-21	4
β-strand	22-23	2	5

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
cAMP-dependent protein kinase catalytic subunit alpha	A	protein	351	Homo sapiens	P17612 (AlphaFold model)
cAMP-dependent protein kinase inhibitor alpha	B	protein	20	Homo sapiens	P61925 (AlphaFold model)

Sequence of entity 1 (A), FASTA

>5BX6_1 cAMP-dependent protein kinase catalytic subunit alpha (chains A)
MGNAAAAKKGSEQESVKEFLAKAKEDFLKKWESPAQNTAHLDQFERIKTLGTGSFGRVML
VKHKETGNHYAMKILDKQKVVKLKQIEHTLNEKRILQAVNFPFLVKLEFSFKDNSNLYMV
MEYVPGGEMFSHLRRIGRFSEPHARFYAAQIVLTFEYLHSLDLIYRDLKPENLLIDQQGY
IQVTDFGFAKRVKGRTWTLCGTPEYLAPEIILSKGYNKAVDWWALGVLIYEMAAGYPPFF
ADQPIQIYEKIVSGKVRFPSHFSSDLKDLLRNLLQVDLTKRFGNLKNGVNDIKNHKWFAT
TDWIAIYQRKVEAPFIPKFKGPGDTSNFDDYEEEEIRVSINEKCGKEFSEF

Sequence of entity 2 (B), FASTA

>5BX6_2 cAMP-dependent protein kinase inhibitor alpha (chains B)
TTYADFIASGRTGRRNAIHD

Ligands and cofactors

ID	Name	Formula	Copies
495	4-chlorophthalazin-1(2H)-one	C8 H5 Cl N2 O	1

Water and common crystallization additives (MPD) are not listed.

Primary citation

PKA based studies of ligand interactions with a methionine gatekeeper. Narayanan, D., Gani, O.A., Alam, K.A. et al. To be published.

Other PDB entries of the same protein (UniProt P17612 (AlphaFold model), which also has an AlphaFold model), best resolution first:

4WB8 1.55 Å, Crystal structure of human cAMP-dependent protein kinase A (catalytic alpha subunit),…
3OVV 1.58 Å, Human cAMP-dependent protein kinase in complex with an inhibitor
3POO 1.6 Å, human cAMP-dependent protein kinase in complex with an inhibitor
4WB5 1.64 Å, Crystal structure of human cAMP-dependent protein kinase A (catalytic alpha subunit)
6QJ7 1.69 Å, Difluorophenyl diacylhydrazides: Potent inhibitors of Serum- and…
3AMA 1.75 Å, Protein kinase A sixfold mutant model of Aurora B with inhibitor JNJ-7706621
4UJ1 1.77 Å, Protein Kinase A in complex with an Inhibitor
5IZJ 1.85 Å, Complex of PKA with the bisubstrate protein kinase inhibitor ARC-1411
4UJ9 1.87 Å, Protein Kinase A in complex with an Inhibitor
3OWP 1.88 Å, Human cAMP-dependent protein kinase in complex with an inhibitor
6FRX 1.88 Å, PKA variant as Aurora B mimic in complex with a dianilinopyrimidine inhibitor
5BX7 1.89 Å, PKA in complex with a benzothiophene fragment compound.

Browse structure collections

About this viewer

MolViewer shows 5BX6 directly in your browser with nothing to install. Switch between cartoon, ball-and-stick, spacefill and surface views, color by chain, secondary structure or B-factor, measure distances, angles and dihedrals, and share or embed the view.