Descriptions

Serine/threonine-protein kinase N1 (PKN1) is a PKC-related serine/threonine protein kinase involved in specific signal transduction responses such as regulation of intermediate filaments of the actin cytoskeleton, cell migration, tumor cell invasion, and transcription regulation in cells. Its kinase activity is enhanced by fatty acids such as arachidonic acid or the small GTP-binding protein Rho. Residues 455-511 of PKN selectively inhibit the kinase activity of the catalytic fragment of PKN1. Arachidonic acid relieves the catalytic activity of wild-type PKN from autoinhibition by residues 455-511 of PKN.

Autoinhibitory domains (AIDs)

Target domain

617-876 (Protein kinase domain)

Relief mechanism

Ligand binding, PTM

Assay

Accessory elements

No accessory elements

Autoinhibited structure

Activated structure

1 structures for A1A4I4

Entry ID Method Resolution Chain Position Source
AF-A1A4I4-F1 Predicted AlphaFoldDB

No variants for A1A4I4

Variant ID(s) Position Change Description Diseaes Association Provenance
No variants for A1A4I4

No associated diseases with A1A4I4

12 regional properties for A1A4I4

Type Name Position InterPro Accession
domain C2 domain 308 - 471 IPR000008
domain Protein kinase domain 617 - 876 IPR000719
domain AGC-kinase, C-terminal 877 - 944 IPR000961
active_site Serine/threonine-protein kinase, active site 738 - 750 IPR008271
domain HR1 rho-binding domain 25 - 101 IPR011072-1
domain HR1 rho-binding domain 113 - 195 IPR011072-2
domain HR1 rho-binding domain 200 - 282 IPR011072-3
binding_site Protein kinase, ATP binding site 623 - 646 IPR017441
domain Protein kinase, C-terminal 898 - 939 IPR017892
domain Serine/threonine-protein kinase N, first HR1 domain 46 - 98 IPR037313
domain Serine/threonine-protein kinase N1, second HR1 domain 122 - 197 IPR037317
domain Serine/threonine-protein kinase N, C2 domain 391 - 477 IPR037784

Functions

Description
EC Number 2.7.11.13 Protein-serine/threonine kinases
Subcellular Localization
  • Cytoplasm
  • Nucleus
  • Endosome
  • Cell membrane ; Peripheral membrane protein
  • Cleavage furrow
  • Midbody
  • Associates with chromatin in a ligand-dependent manner
  • Localization to endosomes is mediated via its interaction with RHOB
  • Association to the cell membrane is dependent on Ser-377 phosphorylation
  • Accumulates during telophase at the cleavage furrow and finally concentrates around the midbody in cytokinesis
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

6 GO annotations of cellular component

Name Definition
cleavage furrow The cleavage furrow is a plasma membrane invagination at the cell division site. The cleavage furrow begins as a shallow groove and eventually deepens to divide the cytoplasm.
cytoplasm The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
endosome A vacuole to which materials ingested by endocytosis are delivered.
midbody A thin cytoplasmic bridge formed between daughter cells at the end of cytokinesis. The midbody forms where the contractile ring constricts, and may persist for some time before finally breaking to complete cytokinesis.
nucleus A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.
protein-containing complex A stable assembly of two or more macromolecules, i.e. proteins, nucleic acids, carbohydrates or lipids, in which at least one component is a protein and the constituent parts function together.

12 GO annotations of molecular function

Name Definition
ATP binding Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
chromatin binding Binding to chromatin, the network of fibers of DNA, protein, and sometimes RNA, that make up the chromosomes of the eukaryotic nucleus during interphase.
diacylglycerol-dependent serine/threonine kinase activity Catalysis of the reaction
histone binding Binding to a histone, any of a group of water-soluble proteins found in association with the DNA of eukaryotic or archaeal chromosomes. They are involved in the condensation and coiling of chromosomes during cell division and have also been implicated in gene regulation and DNA replication. They may be chemically modified (methylated, acetlyated and others) to regulate gene transcription.
histone deacetylase binding Binding to histone deacetylase.
histone H3T11 kinase activity Catalysis of the reaction
nuclear androgen receptor binding Binding to a nuclear androgen receptor.
nuclear receptor coactivator activity A transcription coactivator activity that activates or increases the transcription of specific gene sets via binding to a DNA-bound nuclear receptor, either on its own or as part of a complex. Coactivators often act by altering chromatin structure and modifications. For example, one class of transcription coregulators modifies chromatin structure through covalent modification of histones. A second class remodels the conformation of chromatin in an ATP-dependent fashion. A third class modulates interactions of DNA-bound DNA-binding transcription factors with other transcription coregulators. A fourth class of coactivator activity is the bridging of a DNA-binding transcription factor to the general (basal) transcription machinery. The Mediator complex, which bridges sequence-specific DNA binding transcription factors and RNA polymerase, is also a transcription coactivator.
protein kinase C binding Binding to protein kinase C.
protein serine kinase activity Catalysis of the reactions
protein serine/threonine kinase activity Catalysis of the reactions
small GTPase binding Binding to a small monomeric GTPase.

15 GO annotations of biological process

Name Definition
B cell apoptotic process Any apoptotic process in a B cell, a lymphocyte of B lineage with the phenotype CD19-positive and capable of B cell mediated immunity.
B cell homeostasis The process of regulating the proliferation and elimination of B cells such that the total number of B cells within a whole or part of an organism is stable over time in the absence of an outside stimulus.
epithelial cell migration The orderly movement of an epithelial cell from one site to another, often during the development of a multicellular organism.
hyperosmotic response 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 detection of, or exposure to, a hyperosmotic environment, i.e. an environment with a higher concentration of solutes than the organism or cell.
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.
negative regulation of B cell proliferation Any process that stops, prevents or reduces the rate or extent of B cell proliferation.
negative regulation of protein phosphorylation Any process that stops, prevents or reduces the rate of addition of phosphate groups to amino acids within a protein.
post-translational protein modification The process of covalently altering one or more amino acids in a protein after the protein has been completely translated and released from the ribosome.
protein phosphorylation The process of introducing a phosphate group on to a protein.
regulation of cell motility Any process that modulates the frequency, rate or extent of cell motility.
regulation of germinal center formation Any process that modulates the frequency, rate, or extent of germinal center formation.
regulation of immunoglobulin production Any process that modulates the frequency, rate, or extent of immunoglobulin production.
regulation of transcription by RNA polymerase II Any process that modulates the frequency, rate or extent of transcription mediated by RNA polymerase II.
renal system process A organ system process carried out by any of the organs or tissues of the renal system. The renal system maintains fluid balance, and contributes to electrolyte balance, acid/base balance, and disposal of nitrogenous waste products. In humans, the renal system comprises a pair of kidneys, a pair of ureters, urinary bladder, urethra, sphincter muscle and associated blood vessels; in other species, the renal system may comprise related structures (e.g., nephrocytes and malpighian tubules in Drosophila).
spleen development The process whose specific outcome is the progression of the spleen over time, from its formation to the mature structure. The spleen is a large vascular lymphatic organ composed of white and red pulp, involved both in hemopoietic and immune system functions.

29 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
P24583 PKC1 Protein kinase C-like 1 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast) SS
P04409 PRKCA Protein kinase C alpha type Bos taurus (Bovine) EV SS
P05128 PRKCG Protein kinase C gamma type Bos taurus (Bovine) SS
P05126 PRKCB Protein kinase C beta type Bos taurus (Bovine) SS
A2VDV2 STK38 Serine/threonine-protein kinase 38 Bos taurus (Bovine) SS
P83099 Pkcdelta Putative protein kinase C delta type homolog Drosophila melanogaster (Fruit fly) PR
A1Z7T0 Pkn Serine/threonine-protein kinase N Drosophila melanogaster (Fruit fly) SS
Q04759 PRKCQ Protein kinase C theta type Homo sapiens (Human) PR
Q6P5Z2 PKN3 Serine/threonine-protein kinase N3 Homo sapiens (Human) SS
Q96LW2 RSKR Ribosomal protein S6 kinase-related protein Homo sapiens (Human) PR
Q02156 PRKCE Protein kinase C epsilon type Homo sapiens (Human) SS
P24723 PRKCH Protein kinase C eta type Homo sapiens (Human) SS
Q16513 PKN2 Serine/threonine-protein kinase N2 Homo sapiens (Human) EV
Q05655 PRKCD Protein kinase C delta type Homo sapiens (Human) SS
Q16512 PKN1 Serine/threonine-protein kinase N1 Homo sapiens (Human) EV
P23298 Prkch Protein kinase C eta type Mus musculus (Mouse) PR
Q02111 Prkcq Protein kinase C theta type Mus musculus (Mouse) PR
Q8BWW9 Pkn2 Serine/threonine-protein kinase N2 Mus musculus (Mouse) SS
Q8K045 Pkn3 Serine/threonine-protein kinase N3 Mus musculus (Mouse) SS
P16054 Prkce Protein kinase C epsilon type Mus musculus (Mouse) PR
P28867 Prkcd Protein kinase C delta type Mus musculus (Mouse) PR
P70268 Pkn1 Serine/threonine-protein kinase N1 Mus musculus (Mouse) SS
Q64617 Prkch Protein kinase C eta type Rattus norvegicus (Rat) PR
P09216 Prkce Protein kinase C epsilon type Rattus norvegicus (Rat) PR
P09215 Prkcd Protein kinase C delta type Rattus norvegicus (Rat) PR
O08874 Pkn2 Serine/threonine-protein kinase N2 Rattus norvegicus (Rat) SS
Q63433 Pkn1 Serine/threonine-protein kinase N1 Rattus norvegicus (Rat) SS
P34722 tpa-1 Protein kinase C-like 1 Caenorhabditis elegans PR
A7MBL8 pkn2 Serine/threonine-protein kinase N2 Danio rerio (Zebrafish) (Brachydanio rerio) SS
10 20 30 40 50 60
MASDAVQSEP RSWSLLEQLG LAGADLAAPG VQQQLELERE RLRREIRKEL KLKEGAENLR
70 80 90 100 110 120
RATTDLGRNL GPVELVLRGS SRRLALLHQQ LQELHAHVVL PDPAVGVHDA PQSPGTGDSA
130 140 150 160 170 180
CSATNLSRVA GLEKQLAIEL KVKQGAENMI QTYSNGSTKD RKLLLTAQQM LQDSKTKIDI
190 200 210 220 230 240
IRMQLHRALQ ACQLESQAAP DEAQGSPDLG AVELRIEELR HHFRVEHAVA EGAKNVLRLL
250 260 270 280 290 300
SAAKAPDRKA VSEAQEKLTE SNQKLGLLRE ALERRLGELP ADHPKGRLLR EELAAASSAA
310 320 330 340 350 360
FSARLAGPFP ATHYSTLSKP APLTGTLEVR VVGCRDLPET IPWNPSPSVG GPGTPDSRTP
370 380 390 400 410 420
FLSRPARGLY SRTGSLSGRS SLKAEAENTN EVSTVLKLDN TVVGQTSWKP CGPNAWDQSF
430 440 450 460 470 480
TLELERAREL ELAVFWRDQR GLCALKFLKL EDFLDNERHE VQLDMEPQGC LVAEVTFRNP
490 500 510 520 530 540
VIERIPRLRR QKKIFSKQQG KAFQRARQMN IDVATWVRLL RRLIPNATAT GTFSPGASPG
550 560 570 580 590 600
PEARSTGDIS VEKLNLGTET DSSPQKSPLG PPSSPSSLSS PIQATTTTPE LPSETQETPG
610 620 630 640 650 660
PTLCSPLRKS PLTLEDFKFL AVLGRGHFGK VLLSEFRPSG ELFAIKALKK GDIVARDEVE
670 680 690 700 710 720
SLMCEKRILA AVTNAGHPFL VNLFGCFQTP EHVCFVMEYS AGGDLMLHIH SDVFSEPRAV
730 740 750 760 770 780
FYSACVVLGL QFLHEHKIVY RDLKLDNLLL DTEGYVKIAD FGLCKEGMGY GDRTSTFCGT
790 800 810 820 830 840
PEFLAPEVLT DTSYTRAVDW WGLGVLLYEM LVGESPFPGD DEEEVFDSIV NDEVRYPRFL
850 860 870 880 890 900
SAEAIGIMRR LLRRNPERRL GSSERDAEDV KKQPFFRTLG WDALLARRLP PPFVPTLAGR
910 920 930 940
TDVSNFDEEF TGEAPTLSPP RDARPLTATE QAAFRDFDFV AGSC