Descriptions

PKG is a major intracellular receptor of cGMP and modulates diverse cellular signalings. The activity of PKG1B is regulated by its N-terminal regulatory (R) domain, which includes a leucine zipper (LZ) domain, a linker region with an autoinhibitory (AI) sequence, and two cyclic nucleotide-binding (CNB-A and -B) domains. In the autoinhibition of PKG1B, the AI sequence from R domain binds to the catalytic cleft of the C domain, blocking substrate access and inhibiting the enzymatic activity. This autoinhibition is alleviated by the binding of cyclic guanosine monophosphate (cGMP) to the CNB domains, which destabilizes the autoinhibited state and allows the active kinase to phosphorylate downstream substrate.

Autoinhibitory domains (AIDs)

Target domain

772-1088 (C-terminal catalytic domain)

Relief mechanism

Ligand binding

Assay

Accessory elements

No accessory elements

Autoinhibited structure

Activated structure

0 structures for Q03043

Entry ID Method Resolution Chain Position Source
No available structures

No variants for Q03043

Variant ID(s) Position Change Description Diseaes Association Provenance
No variants for Q03043

No associated diseases with Q03043

No regional properties for Q03043

Type Name Position InterPro Accession
No domain, repeats, and functional sites for Q03043

Functions

Description
EC Number 2.7.11.12 Protein-serine/threonine kinases
Subcellular Localization
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

2 GO annotations of cellular component

Name Definition
cytosol The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
plasma membrane The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

4 GO annotations of molecular function

Name Definition
ATP binding Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
cGMP binding Binding to cGMP, the nucleotide cyclic GMP (guanosine 3',5'-cyclophosphate).
cGMP-dependent protein kinase activity cGMP dependent catalysis of the reaction
protein serine kinase activity Catalysis of the reactions

13 GO annotations of biological process

Name Definition
feeding behavior Behavior associated with the intake of food.
habituation A decrease in a behavioral response to a repeated stimulus. This is exemplified by the failure of a person to show a startle response to a loud noise that has been repeatedly presented.
larval feeding behavior Feeding behavior in a larval (immature) organism.
larval locomotory behavior Locomotory behavior in a larval (immature) organism.
long-term memory The memory process that deals with the storage, retrieval and modification of information a long time (typically weeks, months or years) after receiving that information. This type of memory is typically dependent on gene transcription regulated by second messenger activation.
motor neuron axon guidance The process in which the migration of an axon growth cone of a motor neuron is directed to a specific target site in response to a combination of attractive and repulsive cues.
positive regulation of Toll signaling pathway Any process that activates or increases the frequency, rate or extent of the Tl signaling pathway.
protein phosphorylation The process of introducing a phosphate group on to a protein.
receptor guanylyl cyclase signaling pathway The series of molecular signals initiated by an extracellular ligand binding to a receptor on the surface of the target cell where the receptor possesses guanylyl cyclase activity, and ending with the regulation of a downstream cellular process, e.g. transcription.
regulation of heart contraction Any process that modulates the frequency, rate or extent of heart contraction. Heart contraction is the process in which the heart decreases in volume in a characteristic way to propel blood through the body.
regulation of response to food Any process that modulates the frequency, rate or extent of a response to a food stimulus.
response to sucrose Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a sucrose stimulus.
short-term memory The memory process that deals with the storage, retrieval and modification of information received a short time (up to about 30 minutes) ago. This type of memory is typically dependent on direct, transient effects of second messenger activation.

16 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
P00517 PRKACA cAMP-dependent protein kinase catalytic subunit alpha Bos taurus (Bovine) PR
P00516 PRKG1 cGMP-dependent protein kinase 1 Bos taurus (Bovine) SS
P16911 Pka-C2 cAMP-dependent protein kinase catalytic subunit 2 Drosophila melanogaster (Fruit fly) PR
P17612 PRKACA cAMP-dependent protein kinase catalytic subunit alpha Homo sapiens (Human) PR
Q13237 PRKG2 cGMP-dependent protein kinase 2 Homo sapiens (Human) PR
Q13976 PRKG1 cGMP-dependent protein kinase 1 Homo sapiens (Human) EV
P05132 Prkaca cAMP-dependent protein kinase catalytic subunit alpha Mus musculus (Mouse) PR
Q922R0 Prkx cAMP-dependent protein kinase catalytic subunit PRKX Mus musculus (Mouse) PR
P0C605 Prkg1 cGMP-dependent protein kinase 1 Mus musculus (Mouse) SS
Q61410 Prkg2 cGMP-dependent protein kinase 2 Mus musculus (Mouse) PR
P36887 PRKACA cAMP-dependent protein kinase catalytic subunit alpha Sus scrofa (Pig) PR
Q64595 Prkg2 cGMP-dependent protein kinase 2 Rattus norvegicus (Rat) PR
O62846 PRKACG cAMP-dependent protein kinase catalytic subunit gamma Macaca mulatta (Rhesus macaque) PR
Q7JP68 F47F2.1 cAMP-dependent protein kinase, catalytic subunit-like Caenorhabditis elegans PR
P21137 kin-1 cAMP-dependent protein kinase catalytic subunit Caenorhabditis elegans PR
O76360 egl-4 cGMP-dependent protein kinase egl-4 Caenorhabditis elegans PR
10 20 30 40 50 60
MRFCFDRLCF ATKRPAQNSN SNAPHSSTTV DAPPRPADVD VATVPVATPA PPPQQPVSNL
70 80 90 100 110 120
FYADYQKLQP AIIDRDWERD RDTDTDTRSE AKPPDIVEHI EPVEEQRQIH TQIQSPAEIQ
130 140 150 160 170 180
IQIPPTPPAP SIQIQIQQRY RRHSSAEDRN LNTRRNDSNI TEALRKAASM QQEPNANYQF
190 200 210 220 230 240
PTDLGLVSIV NNNNNTNTHP SGSNSGSNNN SNINNNLVGG IVTLPAAGGL IGLEHTASGL
250 260 270 280 290 300
RLIPAPPTHS DVLTHTLIYG TPPSGAQQLN QDPRSLLHQQ ELQLQQRYQQ LQQLQAQTQG
310 320 330 340 350 360
LYTSQGSPVL YHQPSPGSSQ PVAIPGATCH SPTQLQPPNT LNLQQQMQSL RISGCTPSGT
370 380 390 400 410 420
GGSATPSPVG LVDPNFIVSN YVAASPQEER FIQIIQAKEL KIQEMQRALQ FKDNEIAELK
430 440 450 460 470 480
SHLDKFQSVF PFSRGSAAGC AGTGGASGSG AGGSGGSGPG TATGATRKSG QNFQRQRALG
490 500 510 520 530 540
ISAEPQSESS LLLEHVSFPK YDKDERSREL IKAAILDNDF MKNLDLTQIR EIVDCMYPVK
550 560 570 580 590 600
YPAKNLIIKE GDVGSIVYVM EDGRVEVSRE GKYLSTLSGA KVLGELAILY NCQRTATITA
610 620 630 640 650 660
ITECNLWAIE RQCFQTIMMR TGLIRQAEYS DFLKSVPIFK DLAEDTLIKI SDVLEETHYQ
670 680 690 700 710 720
RGDYIVRQGA RGDTFFIISK GKVRVTIKQQ DTQEEKFIRM LGKGDFFGEK ALQGDDLRTA
730 740 750 760 770 780
NIICESADGV SCLVIDRETF NQLISNLDEI KHRYDDEGAM ERRKINEEFR DINLTDLRVI
790 800 810 820 830 840
ATLGVGGFGR VELVQTNGDS SRSFALKQMK KSQIVETRQQ QHIMSEKEIM GEANCQFIVK
850 860 870 880 890 900
LFKTFKDKKY LYMLMESCLG GELWTILRDK GNFDDSTTRF YTACVVEAFD YLHSRNIIYR
910 920 930 940 950 960
DLKPENLLLN ERGYVKLVDF GFAKKLQTGR KTWTFCGTPE YVAPEVILNR GHDISADYWS
970 980 990 1000 1010 1020
LGVLMFELLT GTPPFTGSDP MRTYNIILKG IDAIEFPRNI TRNASNLIKK LCRDNPAERL
1030 1040 1050 1060 1070 1080
GYQRGGISEI QKHKWFDGFY WWGLQNCTLE PPIKPAVKSV VDTTNFDDYP PDPEGPPPDD
VTGWDKDF