Descriptions

Ribosomal protein S6 kinases are proteins playing a crucial role in regulating cellular growth and metabolism through its involvement in the mTOR signaling pathway. S6Ks are activated by a wide variety of growth factor receptors, including receptor tyrosine kinases, G-protein-coupled receptors, and the interleukin-2 receptor. <br> The activity of S6K protein is regulated by autoinhibitory domains. Phosphorylation of specific serine residues within the N-terminal autoinhibitory domain of S6K by cyclin-dependent kinase 5 (Cdk5) is required for dendritic spine morphogenesis in the neuron. In S6K, the N-terminal region also contains an autoinhibitory domain and its deletion activates S6K.

Autoinhibitory domains (AIDs)

Target domain

91-352 (Protein kinase domain)

Relief mechanism

PTM

Assay

Accessory elements

235-258 (Activation loop from InterPro)

Target domain

91-352 (Protein kinase domain)

Relief mechanism

Assay

Autoinhibited structure

Activated structure

1 structures for P67998

Entry ID Method Resolution Chain Position Source
AF-P67998-F1 Predicted AlphaFoldDB

No variants for P67998

Variant ID(s) Position Change Description Diseaes Association Provenance
No variants for P67998

No associated diseases with P67998

3 regional properties for P67998

Type Name Position InterPro Accession
domain Protein kinase domain 91 - 352 IPR000719
domain AGC-kinase, C-terminal 353 - 423 IPR000961
binding_site Protein kinase, ATP binding site 97 - 123 IPR017441

Functions

Description
EC Number 2.7.11.1 Protein-serine/threonine kinases
Subcellular Localization
  • Cytoplasm
  • Synapse, synaptosome
  • Mitochondrion outer membrane
  • Mitochondrion
  • Colocalizes with URI1 at mitochondrion
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

4 GO annotations of cellular component

Name Definition
mitochondrial outer membrane The outer, i.e. cytoplasm-facing, lipid bilayer of the mitochondrial envelope.
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.
neuron projection A prolongation or process extending from a nerve cell, e.g. an axon or dendrite.
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.

5 GO annotations of molecular function

Name Definition
ATP binding Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
protein kinase activity Catalysis of the phosphorylation of an amino acid residue in a protein, usually according to the reaction: a protein + ATP = a phosphoprotein + ADP.
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.

7 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.
cellular response to growth factor stimulus Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a growth factor stimulus.
long-chain fatty acid import into cell The directed movement of a long-chain fatty acid from outside of a cell into a cell. This may occur via transport across the plasma membrane or via endocytosis. A long-chain fatty acid is a fatty acid with a chain length between C13 and C22.
negative regulation of apoptotic process Any process that stops, prevents, or reduces the frequency, rate or extent of cell death by apoptotic process.
negative regulation of insulin receptor signaling pathway Any process that stops, prevents, or reduces the frequency, rate or extent of insulin receptor signaling.
peptidyl-serine phosphorylation The phosphorylation of peptidyl-serine to form peptidyl-O-phospho-L-serine.
TOR signaling The series of molecular signals mediated by TOR (Target of rapamycin) proteins, members of the phosphoinositide (PI) 3-kinase related kinase (PIKK) family that act as serine/threonine kinases in response to nutrient availability or growth factors.

No homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
No homologous proteins
10 20 30 40 50 60
MRRRRRRDGF YPAPDFRDRE AEDMAGVFDI DLDQPEDAGS EDELEEGGQL NESMDHGGVG
70 80 90 100 110 120
PYELGMEHCE KFEISETSVN RGPEKIRPEC FELLRVLGKG GYGKVFQVRK VTGANTGKIF
130 140 150 160 170 180
AMKVLKKAMI VRNAKDTAHT KAERNILEEV KHPFIVDLIY AFQTGGKLYL ILEYLSGGEL
190 200 210 220 230 240
FMQLEREGIF MEDTACFYLA EISMALGHLH QKGIIYRDLK PENIMLNHQG HVKLTDFGLC
250 260 270 280 290 300
KESIHDGTVT HTFCGTIEYM APEILMRSGH NRAVDWWSLG ALMYDMLTGA PPFTGENRKK
310 320 330 340 350 360
TIDKILKCKL NLPPYLTQEA RDLLKKLLKR NAASRLGAGP GDAGEVQAHP FFRHINWEEL
370 380 390 400 410 420
LARKVEPPFK PLLQSEEDVS QFDSKFTRQT PVDSPDDSTL SESANQVFLG FTYVAPSVLE
430 440 450 460 470 480
SVKEKFSFEP KIRSPRRFIG SPRTPVSPVK FSPGDFWGRG ASASTANPQT PVEYPMETSG
490 500 510 520
IEQMDVTTSG EASAPLPIRQ PNSGPYKKQA FPMISKRPEH LRMNL