Descriptions

PAK4 encodes for Serine/threonine-protein kinase PAK 4, and control many cellular functions, including actin cytoskeleton regulation, cell growth, migration and survival, cytokine signaling. Group II PAKs (PAK4, 5, and 6) harbor well-conserved pseudosubstrate sequences. The N-terminal inhibitory segment of PAK4 contains two pseudopeptide sequences (FTGLPR at 32th and RPKPLV at 49th) that binds to the active site of the kinase domain as a pseudosubstrate. PAKs are activated by the binding of GTP-loaded Cdc42 (or Rac) to the CRIB domain, which disrupts the dimer and unfolds autoinhibitory region. After releasing the autoinhibitory region, the kinase domain is then autophosphorylated for full activation.

Autoinhibitory domains (AIDs)

Target domain

449-700 (Protein kinase domain)

Relief mechanism

Partner binding

Assay

Accessory elements

585-608 (Activation loop from InterPro)

Target domain

426-717 (Catalytic domain of the Serine/Threonine Kinase, p21-activated kinase 5)

Relief mechanism

Assay

References

Autoinhibited structure

Activated structure

1 structures for Q8C015

Entry ID Method Resolution Chain Position Source
AF-Q8C015-F1 Predicted AlphaFoldDB

1 variants for Q8C015

Variant ID(s) Position Change Description Diseaes Association Provenance
rs27253754 355 T>I No Ensembl

No associated diseases with Q8C015

4 regional properties for Q8C015

Type Name Position InterPro Accession
domain Protein kinase domain 449 - 700 IPR000719
binding_site Protein kinase, ATP binding site 455 - 479 IPR017441
domain Serine/threonine-protein kinase PAK5, catalytic domain 426 - 717 IPR028754
domain p21 activated kinase binding domain 9 - 55 IPR033923

Functions

Description
EC Number 2.7.11.1 Protein-serine/threonine kinases
Subcellular Localization
  • Mitochondrion
  • Cytoplasm
  • Nucleus
  • Shuttles between the nucleus and the mitochondria, and mitochondrial localization is essential for the role in cell survival
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

4 GO annotations of cellular component

Name Definition
cytoplasm The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
mitochondrion A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
nucleoplasm That part of the nuclear content other than the chromosomes or the nucleolus.
synapse The junction between an axon of one neuron and a dendrite of another neuron, a muscle fiber or a glial cell. As the axon approaches the synapse it enlarges into a specialized structure, the presynaptic terminal bouton, which contains mitochondria and synaptic vesicles. At the tip of the terminal bouton is the presynaptic membrane; facing it, and separated from it by a minute cleft (the synaptic cleft) is a specialized area of membrane on the receiving cell, known as the postsynaptic membrane. In response to the arrival of nerve impulses, the presynaptic terminal bouton secretes molecules of neurotransmitters into the synaptic cleft. These diffuse across the cleft and transmit the signal to the postsynaptic membrane.

4 GO annotations of molecular function

Name Definition
ATP binding Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
protein serine kinase activity Catalysis of the reactions: ATP + protein serine = ADP + protein serine phosphate.
protein serine/threonine kinase activity Catalysis of the reactions: ATP + protein serine = ADP + protein serine phosphate, and ATP + protein threonine = ADP + protein threonine phosphate.
protein serine/threonine/tyrosine kinase activity Catalysis of the reactions: ATP + a protein serine = ADP + protein serine phosphate; ATP + a protein threonine = ADP + protein threonine phosphate; and ATP + a protein tyrosine = ADP + protein tyrosine phosphate.

9 GO annotations of biological process

Name Definition
apoptotic process A programmed cell death process which begins when a cell receives an internal (e.g. DNA damage) or external signal (e.g. an extracellular death ligand), and proceeds through a series of biochemical events (signaling pathway phase) which trigger an execution phase. The execution phase is the last step of an apoptotic process, and is typically characterized by rounding-up of the cell, retraction of pseudopodes, reduction of cellular volume (pyknosis), chromatin condensation, nuclear fragmentation (karyorrhexis), plasma membrane blebbing and fragmentation of the cell into apoptotic bodies. When the execution phase is completed, the cell has died.
cytoskeleton organization A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of cytoskeletal structures.
intracellular signal transduction The process in which a signal is passed on to downstream components within the cell, which become activated themselves to further propagate the signal and finally trigger a change in the function or state of the cell.
learning Any process in an organism in which a relatively long-lasting adaptive behavioral change occurs as the result of experience.
locomotory behavior The specific movement from place to place of an organism in response to external or internal stimuli. Locomotion of a whole organism in a manner dependent upon some combination of that organism's internal state and external conditions.
memory The activities involved in the mental information processing system that receives (registers), modifies, stores, and retrieves informational stimuli. The main stages involved in the formation and retrieval of memory are encoding (processing of received information by acquisition), storage (building a permanent record of received information as a result of consolidation) and retrieval (calling back the stored information and use it in a suitable way to execute a given task).
negative regulation of extrinsic apoptotic signaling pathway Any process that stops, prevents or reduces the frequency, rate or extent of extrinsic apoptotic signaling pathway.
protein phosphorylation The process of introducing a phosphate group on to a protein.
regulation of MAPK cascade Any process that modulates the frequency, rate or extent of signal transduction mediated by the MAP kinase (MAPK) cascade.

27 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
Q12469 SKM1 Serine/threonine-protein kinase SKM1 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast) PR
Q08E52 PAK1 Serine/threonine-protein kinase PAK 1 Bos taurus (Bovine) SS
Q7YQL4 PAK3 Serine/threonine-protein kinase PAK 3 Pan troglodytes (Chimpanzee) SS
Q9VXE5 mbt Serine/threonine-protein kinase PAK mbt Drosophila melanogaster (Fruit fly) PR
Q13153 PAK1 Serine/threonine-protein kinase PAK 1 Homo sapiens (Human) EV
Q13177 PAK2 Serine/threonine-protein kinase PAK 2 Homo sapiens (Human) EV
O75914 PAK3 Serine/threonine-protein kinase PAK 3 Homo sapiens (Human) SS
O96013 PAK4 Serine/threonine-protein kinase PAK 4 Homo sapiens (Human) EV
Q9NQU5 PAK6 Serine/threonine-protein kinase PAK 6 Homo sapiens (Human) EV
Q9P286 PAK5 Serine/threonine-protein kinase PAK 5 Homo sapiens (Human) EV
Q3ULB5 Pak6 Serine/threonine-protein kinase PAK 6 Mus musculus (Mouse) PR
Q8CIN4 Pak2 Serine/threonine-protein kinase PAK 2 Mus musculus (Mouse) SS
Q9JI11 Stk4 Serine/threonine-protein kinase 4 Mus musculus (Mouse) PR
Q9JI10 Stk3 Serine/threonine-protein kinase 3 Mus musculus (Mouse) SS
Q8BTW9 Pak4 Serine/threonine-protein kinase PAK 4 Mus musculus (Mouse) PR
Q61036 Pak3 Serine/threonine-protein kinase PAK 3 Mus musculus (Mouse) SS
Q9JM52 Mink1 Misshapen-like kinase 1 Mus musculus (Mouse) PR
P83510 Tnik Traf2 and NCK-interacting protein kinase Mus musculus (Mouse) PR
P97820 Map4k4 Mitogen-activated protein kinase kinase kinase kinase 4 Mus musculus (Mouse) PR
O88643 Pak1 Serine/threonine-protein kinase PAK 1 Mus musculus (Mouse) SS
Q62829 Pak3 Serine/threonine-protein kinase PAK 3 Rattus norvegicus (Rat) SS
Q64303 Pak2 Serine/threonine-protein kinase PAK 2 Rattus norvegicus (Rat) SS
P35465 Pak1 Serine/threonine-protein kinase PAK 1 Rattus norvegicus (Rat) SS
D4A280 Pak5 Serine/threonine-protein kinase PAK 5 Rattus norvegicus (Rat) SS
Q17850 pak-1 Serine/threonine-protein kinase pak-1 Caenorhabditis elegans PR
G5EGQ3 max-2 Serine/threonine-protein kinase max-2 Caenorhabditis elegans SS
G5EFU0 pak-2 Serine/threonine-protein kinase pak-2 Caenorhabditis elegans PR
10 20 30 40 50 60
MFGKKKKKIE ISGPSNFEHR VHTGFDPQEQ KFTGLPQQWH SLLADTANRP KPMVDPSCIT
70 80 90 100 110 120
PIQLAPMKTI VRGNKSCKET SINGLLEDFD NISVTRSNSL RKESPPTPDQ GAASRIQGHS
130 140 150 160 170 180
EENGFITFSQ YSSESDTTAD YTTEKYRDRS LYGDDLDLYY KSSHAAKQNG HAMKMKHGDA
190 200 210 220 230 240
YYPEMKSLKT DLAGFPVDYH THLDSLRKSS EYGDLRWDYQ RASSSSPLDY SFQLTPSRTA
250 260 270 280 290 300
GTSRCSKESL AYSESDWGPS LDDYDRRPKS SYLHQTSPQP AMRQRSKSGS GLQEPMMPFG
310 320 330 340 350 360
ASAFKTHPQG HSYNSYTYPR LSEPTMCIPK VDYDRAQMVF SPPLSGSDTY PRGPTKLPQS
370 380 390 400 410 420
QSKAGYSSGS HQYPSGYHKA SLYHHPSLQT SSQYISTASY LSSLSISSST YPPPSWGSSS
430 440 450 460 470 480
DQQPSRVSHE QFRAALQLVV SPGDPREYLD NFIKIGEGST GIVCIATEKH TGKQVAVKKM
490 500 510 520 530 540
DLRKQQRREL LFNEVVIMRD YHHDNVVDMY NSYLVGDELW VVMEFLEGGA LTDIVTHTRM
550 560 570 580 590 600
NEEQIATVCL SVLKALSYLH NQGVIHRDIK SDSILLTSDG RIKLSDFGFC AQVSKEVPKR
610 620 630 640 650 660
KSLVGTPYWM APEVISRLPY GTEVDIWSLG IMVIEMIDGE PPYFNEPPLQ AMRRIRDSLP
670 680 690 700 710
PRVKDLHKVS SMLRGFLDLM LVREPSQRAT AQELLGHPFL KLAGPPSCIV PLMRQYRHH