Descriptions

PKA is a major intracellular receptor of cAMP and modulates diverse cellular signalings. The autoinhibitory sequence of the regulatory subunit may interact with the catalytic kinase domain and keeping the catalytic subunit inactive by blocking the active site in the absence of cAMP.

Autoinhibitory domains (AIDs)

Target domain

122-238 (Cyclic nucleotide-binding domain)

Relief mechanism

Ligand binding

Assay

Accessory elements

No accessory elements

Autoinhibited structure

Activated structure

1 structures for P30625

Entry ID Method Resolution Chain Position Source
AF-P30625-F1 Predicted AlphaFoldDB

No variants for P30625

Variant ID(s) Position Change Description Diseaes Association Provenance
No variants for P30625

No associated diseases with P30625

7 regional properties for P30625

Type Name Position InterPro Accession
domain Cyclic nucleotide-binding domain 122 - 238 IPR000595-1
domain Cyclic nucleotide-binding domain 240 - 361 IPR000595-2
domain cAMP-dependent protein kinase regulatory subunit, dimerization-anchoring domain 20 - 57 IPR003117
conserved_site Cyclic nucleotide-binding, conserved site 149 - 165 IPR018488-1
conserved_site Cyclic nucleotide-binding, conserved site 185 - 202 IPR018488-2
conserved_site Cyclic nucleotide-binding, conserved site 267 - 283 IPR018488-3
conserved_site Cyclic nucleotide-binding, conserved site 309 - 326 IPR018488-4

Functions

Description
EC Number
Subcellular Localization
  • Cytoplasm, cytosol
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

3 GO annotations of cellular component

Name Definition
cAMP-dependent protein kinase complex An enzyme complex, composed of regulatory and catalytic subunits, that catalyzes protein phosphorylation. Inactive forms of the enzyme have two regulatory chains and two catalytic chains; activation by cAMP produces two active catalytic monomers and a regulatory dimer.
cytosol The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
membrane A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.

4 GO annotations of molecular function

Name Definition
cAMP binding Binding to cAMP, the nucleotide cyclic AMP (adenosine 3',5'-cyclophosphate).
cAMP-dependent protein kinase inhibitor activity Binds to and stops, prevents or reduces the activity of a cAMP-dependent protein kinase.
cAMP-dependent protein kinase regulator activity Modulation of the activity of the enzyme cAMP-dependent protein kinase.
protein kinase A catalytic subunit binding Binding to one or both of the catalytic subunits of protein kinase A.

6 GO annotations of biological process

Name Definition
medium-term memory The memory process that deals with the storage, retrieval and modification of information received at a time ago that is intermediate between that of short and long term memory (30min - 7hrs in Drosophila melanogaster).
negative regulation of oocyte maturation Any process that stops, prevents or reduces the frequency, rate or extent of oocyte maturation.
negative regulation of protein kinase C signaling Any process that decreases the frequency, rate, or extent of a series of reactions, mediated by the intracellular serine/threonine kinase protein kinase C, which occurs as a result of a single trigger reaction or compound.
positive regulation of gene expression Any process that increases the frequency, rate or extent of gene expression. Gene expression is the process in which a gene's coding sequence is converted into a mature gene product (protein or RNA).
regulation of establishment of cell polarity Any process that modulates the frequency, rate or extent of establishment of cell polarity.
regulation of protein phosphorylation Any process that modulates the frequency, rate or extent of addition of phosphate groups into an amino acid in a protein.

22 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
P00515 PRKAR2A cAMP-dependent protein kinase type II-alpha regulatory subunit Bos taurus (Bovine) EV
P31322 PRKAR2B cAMP-dependent protein kinase type II-beta regulatory subunit Bos taurus (Bovine) EV
P00514 PRKAR1A cAMP-dependent protein kinase type I-alpha regulatory subunit Bos taurus (Bovine) EV
Q5ZM91 PRKAR1A cAMP-dependent protein kinase type I-alpha regulatory subunit Gallus gallus (Chicken) SS
P81900 Pka-R2 cAMP-dependent protein kinase type II regulatory subunit Drosophila melanogaster (Fruit fly) PR
P16905 Pka-R1 cAMP-dependent protein kinase type I regulatory subunit Drosophila melanogaster (Fruit fly) PR
P13861 PRKAR2A cAMP-dependent protein kinase type II-alpha regulatory subunit Homo sapiens (Human) PR
P31323 PRKAR2B cAMP-dependent protein kinase type II-beta regulatory subunit Homo sapiens (Human) PR
Q96M20 CNBD2 Cyclic nucleotide-binding domain-containing protein 2 Homo sapiens (Human) PR
P31321 PRKAR1B cAMP-dependent protein kinase type I-beta regulatory subunit Homo sapiens (Human) EV
P10644 PRKAR1A cAMP-dependent protein kinase type I-alpha regulatory subunit Homo sapiens (Human) EV
P12367 Prkar2a cAMP-dependent protein kinase type II-alpha regulatory subunit Mus musculus (Mouse) PR
P31324 Prkar2b cAMP-dependent protein kinase type II-beta regulatory subunit Mus musculus (Mouse) PR
Q9D5U8 Cnbd2 Cyclic nucleotide-binding domain-containing protein 2 Mus musculus (Mouse) PR
Q9DBC7 Prkar1a cAMP-dependent protein kinase type I-alpha regulatory subunit [Cleaved into: cAMP-dependent protein kinase type I-alpha regulatory subunit, N-terminally processed] Mus musculus (Mouse) SS
P12849 Prkar1b cAMP-dependent protein kinase type I-beta regulatory subunit Mus musculus (Mouse) PR
P05207 PRKAR2A cAMP-dependent protein kinase type II-alpha regulatory subunit Sus scrofa (Pig) SS
P07802 PRKAR1A cAMP-dependent protein kinase type I-alpha regulatory subunit Sus scrofa (Pig) SS
P12369 Prkar2b cAMP-dependent protein kinase type II-beta regulatory subunit Rattus norvegicus (Rat) PR
P12368 Prkar2a cAMP-dependent protein kinase type II-alpha regulatory subunit Rattus norvegicus (Rat) PR
P09456 Prkar1a cAMP-dependent protein kinase type I-alpha regulatory subunit Rattus norvegicus (Rat) SS
P81377 Prkar1b cAMP-dependent protein kinase type I-beta regulatory subunit Rattus norvegicus (Rat) PR
10 20 30 40 50 60
MSGGNEEDQL AQCQAYVQRH NIQQLVKEAI VVLCIHKPDN PVLFLKDHFE KLNEQRAQEG
70 80 90 100 110 120
GNPDAADDDD IIVEPPKRSG GRRTGISAEP IKEDDTEYKK VVIPKDDATR RSLESAMRKN
130 140 150 160 170 180
LLFAHLEEDE QKTMYDAMFP VEKSAGETII EQGEEGDNFY VIDKGTVDVY VNHEYVLTIN
190 200 210 220 230 240
EGGSFGELAL IYGTPRAATV IAKTDVKLWA IDRLTYRRIL MGSVTKKRKM YDEFLSKVQI
250 260 270 280 290 300
LADLDQWERA NVADALERCD FEPGTHVVEQ GQPGDEFFII LEGEANVLQK RSDDAPFDVV
310 320 330 340 350 360
GHLGMSDYFG EIALLLDRPR AATVVAKTHL KCIKLDRNRF ERVMGPVREI LKRDVSNYNS
YVKLMT