Page last updated: 2024-08-07 23:32:34

Phosphatidylinositol 5-phosphate 4-kinase type-2 alpha

A phosphatidylinositol 5-phosphate 4-kinase type-2 alpha that is encoded in the genome of human. [PRO:DNx, UniProtKB:P48426]

Synonyms

EC 2.7.1.149;
1-phosphatidylinositol 5-phosphate 4-kinase 2-alpha;
Diphosphoinositide kinase 2-alpha;
PIP5KIII;
Phosphatidylinositol 5-Phosphate 4-Kinase;
PI5P4Kalpha;
Phosphatidylinositol 5-phosphate 4-kinase type II alpha;
P

Research

Bioassay Publications (2)

TimeframeStudies on this Protein(%)All Drugs %
pre-19900 (0.00)18.7374
1990's0 (0.00)18.2507
2000's0 (0.00)29.6817
2010's1 (50.00)24.3611
2020's1 (50.00)2.80

Compounds (220)

Drugs with Potency Measurements

DrugTaxonomyMeasurementAverage (mM)Bioassay(s)Publication(s)
1,3-dipropyl-8-(4-sulfophenyl)xanthineHomo sapiens (human)Potency14.125410
lansoprazoleHomo sapiens (human)Potency22.387210
methylene violetHomo sapiens (human)Potency11.220210
7-chloro-5,10-dihydrothieno[3,4-b][1,5]benzodiazepin-4-oneHomo sapiens (human)Potency22.387210
cgp 60474Homo sapiens (human)Potency15.848910
2-[(5,6-dimethyl-4-oxo-3H-thieno[2,3-d]pyrimidin-2-yl)thio]-N-(4-methyl-2-thiazolyl)acetamideHomo sapiens (human)Potency11.220210
N,N-diethyl-2-[(3-thiophen-2-yl-7-isothiazolo[4,5-d]pyrimidinyl)thio]acetamideHomo sapiens (human)Potency14.125410
6-ethyl-6-methyl-5,8-dihydro-1H-thiopyrano[2,3]thieno[2,4-b]pyrimidine-2,4-dioneHomo sapiens (human)Potency8.912510
N-(4-acetylphenyl)-2-thiophen-2-ylacetamideHomo sapiens (human)Potency15.848910
N-[5-(2-methylpropyl)-1,3,4-thiadiazol-2-yl]-2-thiophen-2-ylacetamideHomo sapiens (human)Potency15.848910
5,7-dibromo-6-methoxy-3-methyl-2-benzofurancarboxylic acidHomo sapiens (human)Potency14.125410
N-[4-(1-pyrrolidinylsulfonyl)phenyl]-2-thiophen-2-ylacetamideHomo sapiens (human)Potency10.000010
2-[[[3-[2-(4-methylphenyl)sulfonylethylthio]phenyl]-oxomethyl]amino]benzoic acidHomo sapiens (human)Potency15.848910
3-methoxy-N-(6-methylsulfonyl-1,3-benzothiazol-2-yl)benzamideHomo sapiens (human)Potency28.183810
N-[4-[(3,4-dimethyl-5-isoxazolyl)sulfamoyl]phenyl]-6,8-dimethyl-2-(2-pyridinyl)-4-quinolinecarboxamideHomo sapiens (human)Potency8.912510
N-(3-cyano-2-thiophenyl)-2-[4-(1,3,4-oxadiazol-2-yl)phenoxy]acetamideHomo sapiens (human)Potency15.848910
3-chloro-N-[3-(4-morpholinyl)propyl]-6-nitro-1-benzothiophene-2-carboxamideHomo sapiens (human)Potency14.125410
4-(4-chlorophenyl)-4-oxobutanoic acid [2-(2-furanylmethylamino)-2-oxoethyl] esterHomo sapiens (human)Potency31.622810
2-[[5-(2-fluoroanilino)-1,3,4-thiadiazol-2-yl]thio]-N-(2-furanylmethyl)acetamideHomo sapiens (human)Potency11.220210
2-pyridin-4-yl-N-[4-(2-thiazolylsulfamoyl)phenyl]-4-quinolinecarboxamideHomo sapiens (human)Potency14.125410
2-[5-(1-pyrrolidinylsulfonyl)-2-thiophenyl]-N-[2-(4-sulfamoylphenyl)ethyl]acetamideHomo sapiens (human)Potency28.183810
(2S)-3-methyl-2-[[(3-methylphenyl)-oxomethyl]amino]butanoic acid (4-oxo-2-pyrimido[2,1-b][1,3]benzothiazolyl)methyl esterHomo sapiens (human)Potency7.079510
N-(4-tert-butyl-2-thiazolyl)-6-quinoxalinecarboxamideHomo sapiens (human)Potency15.848910
2-[[4-amino-5-[4-(difluoromethoxy)phenyl]-1,2,4-triazol-3-yl]thio]-N-[(2-furanylmethylamino)-oxomethyl]acetamideHomo sapiens (human)Potency8.912510
cb 7969312Homo sapiens (human)Potency6.309610
N-(3-cyano-2-thiophenyl)-2-[(1-methyl-2-imidazolyl)thio]acetamideHomo sapiens (human)Potency15.848910
3-[(4-phenyl-1-piperazinyl)sulfonyl]benzoic acid [2-(2-furanylmethylamino)-2-oxoethyl] esterHomo sapiens (human)Potency15.848910
4-[[3-[(4-methylanilino)-oxomethyl]-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophen-2-yl]amino]-4-oxobutanoic acidHomo sapiens (human)Potency17.782810
2,5-dimethyl-4-(4-methyl-1-piperidinyl)-6-thieno[2,3-d]pyrimidinecarboxylic acidHomo sapiens (human)Potency31.622810
7-(2,4-dichlorophenyl)-5-oxo-2,3-dihydrothiazolo[3,2-a]pyrimidine-6-carbonitrileHomo sapiens (human)Potency25.118910
N-[(4-methylphenyl)methyl]-4-(1-pyrrolyl)benzamideHomo sapiens (human)Potency12.589310
3-ethyl-2-sulfanylidene-5-thiophen-2-yl-1H-thieno[2,3-d]pyrimidin-4-oneHomo sapiens (human)Potency22.387210
6-(2,3-dihydro-1,4-benzodioxin-3-yl)-3-(phenoxymethyl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazoleHomo sapiens (human)Potency10.000010
8-(2-chlorophenyl)-3-(4-ethoxyphenyl)-6-oxo-2,4,7,8-tetrahydropyrido[2,1-b][1,3,5]thiadiazine-9-carbonitrileHomo sapiens (human)Potency8.912510
3-(dimethylamino)benzoic acid (7-hydroxy-2-oxo-1-benzopyran-4-yl)methyl esterHomo sapiens (human)Potency14.125410
N-[5-[(2-methylphenyl)methylthio]-1,3,4-thiadiazol-2-yl]-2-thiophen-2-ylacetamideHomo sapiens (human)Potency25.118910
5-chloro-N-[4-(2-thiazolo[5,4-b]pyridinyl)phenyl]-2-thiophenesulfonamideHomo sapiens (human)Potency14.125410
N-(4-acetylphenyl)-5,6-dihydro-4H-cyclopenta[d]isoxazole-3-carboxamideHomo sapiens (human)Potency35.481310
2-[6-[(2-fluorophenyl)methyl]-5,7-dimethyl-4-oxo-3-pyrrolo[3,4-d]pyridazinyl]-N-(2,3,5,6-tetrafluorophenyl)acetamideHomo sapiens (human)Potency10.000010
3-(4-methylphenyl)-5-oxo-8-thiazolo[2,3-b]quinazolinecarboxamideHomo sapiens (human)Potency15.848910
3-(4-bromophenyl)-N-[5-[[4-[(4-ethyl-1-piperazinyl)methyl]-3-(trifluoromethyl)anilino]-oxomethyl]-2-methylphenyl]-1H-pyrazole-5-carboxamideHomo sapiens (human)Potency28.183810
4-[(1-methyl-5-tetrazolyl)thio]-5-[2-(trifluoromethyl)phenyl]thieno[2,3-d]pyrimidineHomo sapiens (human)Potency17.782810
4-[[2-[(6-methyl-4-oxo-1H-pyrimidin-2-yl)thio]-1-oxoethyl]amino]benzoic acid ethyl esterHomo sapiens (human)Potency15.848910
2-[[(6-methyl-5-oxo-2H-1,2,4-triazin-3-yl)thio]methyl]-5,6,7,8-tetrahydro-3H-[1]benzothiolo[2,3-d]pyrimidin-4-oneHomo sapiens (human)Potency28.183810

Drugs with Inhibition Measurements

DrugTaxonomyMeasurementAverage (mM)Bioassay(s)Publication(s)
nih-12848Homo sapiens (human)IC5040.059322

Drugs with Activation Measurements

DrugTaxonomyMeasurementAverage (mM)Bioassay(s)Publication(s)
fasudilHomo sapiens (human)Kd30.000011
4-(4'-hydroxyphenyl)-amino-6,7-dimethoxyquinazolineHomo sapiens (human)Kd30.000011
imatinibHomo sapiens (human)Kd30.000011
triciribine phosphateHomo sapiens (human)Kd30.000011
picropodophyllinHomo sapiens (human)Kd30.000012
gefitinibHomo sapiens (human)Kd30.000011
lestaurtinibHomo sapiens (human)Kd30.000011
vatalanibHomo sapiens (human)Kd30.000011
ruboxistaurinHomo sapiens (human)Kd30.000012
canertinibHomo sapiens (human)Kd30.000011
cyc 202Homo sapiens (human)Kd30.000011
enzastaurinHomo sapiens (human)Kd30.000011
erlotinibHomo sapiens (human)Kd30.000011
lapatinibHomo sapiens (human)Kd30.000011
sorafenibHomo sapiens (human)Kd30.000011
s 1033Homo sapiens (human)Kd30.000011
xl147Homo sapiens (human)Kd30.000011
bms 387032Homo sapiens (human)Kd30.000012
sf 2370Homo sapiens (human)Kd30.000011
tandutinibHomo sapiens (human)Kd30.000011
ha 1100Homo sapiens (human)Kd30.000011
7-epi-hydroxystaurosporineHomo sapiens (human)Kd30.000011
zd 6474Homo sapiens (human)Kd30.000011
imd 0354Homo sapiens (human)Kd30.000011
sirolimusHomo sapiens (human)Kd30.000011
bosutinibHomo sapiens (human)Kd30.000011
orantinibHomo sapiens (human)Kd30.000011
su 11248Homo sapiens (human)Kd30.000011
palbociclibHomo sapiens (human)Kd0.208011
vx680Homo sapiens (human)Kd30.000011
cyc 116Homo sapiens (human)Kd30.000011
everolimusHomo sapiens (human)Kd30.000011
ekb 569Homo sapiens (human)Kd30.000011
axitinibHomo sapiens (human)Kd30.000011
temsirolimusHomo sapiens (human)Kd30.000011
on 01910Homo sapiens (human)Kd30.000011
av 412Homo sapiens (human)Kd30.000011
y-39983Homo sapiens (human)Kd30.000011
cp 547632Homo sapiens (human)Kd30.000011
lenvatinibHomo sapiens (human)Kd30.000011
pd 0325901Homo sapiens (human)Kd30.000011
osi 930Homo sapiens (human)Kd30.000011
scio-469Homo sapiens (human)Kd30.000012
cp 724714Homo sapiens (human)Kd30.000011
hmn-214Homo sapiens (human)Kd30.000011
tivozanibHomo sapiens (human)Kd30.000011
cediranibHomo sapiens (human)Kd30.000011
masitinibHomo sapiens (human)Kd30.000011
ly-2157299Homo sapiens (human)Kd30.000011
pazopanibHomo sapiens (human)Kd30.000011
azd 6244Homo sapiens (human)Kd30.000011
su 14813Homo sapiens (human)Kd30.000011
bibw 2992Homo sapiens (human)Kd30.000011
binimetinibHomo sapiens (human)Kd30.000011
saracatinibHomo sapiens (human)Kd30.000011
vx 702Homo sapiens (human)Kd30.000011
crenolanibHomo sapiens (human)Kd30.000011
tg100-115Homo sapiens (human)Kd7.017011
cc 401Homo sapiens (human)Kd30.000011
exel-7647Homo sapiens (human)Kd30.000011
volasertibHomo sapiens (human)Kd30.000011
azd 7762Homo sapiens (human)Kd30.000011
regorafenibHomo sapiens (human)Kd30.000011
6-[[5-fluoro-2-(3,4,5-trimethoxyanilino)-4-pyrimidinyl]amino]-2,2-dimethyl-4H-pyrido[3,2-b][1,4]oxazin-3-oneHomo sapiens (human)Kd30.000011
brivanibHomo sapiens (human)Kd30.000011
mp470Homo sapiens (human)Kd30.000011
rgb 286638Homo sapiens (human)Kd30.000011
at 7519Homo sapiens (human)Kd30.000011
bms-690514Homo sapiens (human)Kd30.000011
bi 2536Homo sapiens (human)Kd30.000011
inno-406Homo sapiens (human)Kd30.000011
kw 2449Homo sapiens (human)Kd30.000011
danusertibHomo sapiens (human)Kd30.000011
abt 869Homo sapiens (human)Kd30.000011
azd 8931Homo sapiens (human)Kd30.000011
azd 1152Homo sapiens (human)Kd30.000011
pf 00299804Homo sapiens (human)Kd30.000011
ridaforolimusHomo sapiens (human)Kd30.000011
ch 4987655Homo sapiens (human)Kd30.000011
6-(5-((cyclopropylamino)carbonyl)-3-fluoro-2-methylphenyl)-n-(2,2-dimethylprpyl)-3-pyridinecarboxamideHomo sapiens (human)Kd30.000011
cc-930Homo sapiens (human)Kd30.000011
idelalisibHomo sapiens (human)Kd30.000011
crizotinibHomo sapiens (human)Kd30.000011
osi 906Homo sapiens (human)Kd30.000011
chir-265Homo sapiens (human)Kd30.000011
motesanibHomo sapiens (human)Kd30.000011
fostamatinibHomo sapiens (human)Kd30.000011
trametinibHomo sapiens (human)Kd30.000011
mln8054Homo sapiens (human)Kd30.000011
pf-562,271Homo sapiens (human)Kd30.000011
tg100801Homo sapiens (human)Kd30.000011
dactolisibHomo sapiens (human)Kd30.000011
gsk 461364Homo sapiens (human)Kd30.000011
azd 1152-hqpaHomo sapiens (human)Kd30.000011
e 7050Homo sapiens (human)Kd30.000011
2-amino-8-ethyl-4-methyl-6-(1H-pyrazol-5-yl)-7-pyrido[2,3-d]pyrimidinoneHomo sapiens (human)Kd30.000011
tak-901Homo sapiens (human)Kd30.000011
gdc-0973Homo sapiens (human)Kd30.000011
buparlisibHomo sapiens (human)Kd30.000011
azd 1480Homo sapiens (human)Kd30.000011
azd8330Homo sapiens (human)Kd30.000011
pha 848125Homo sapiens (human)Kd30.000012
ro5126766Homo sapiens (human)Kd30.000011
fedratinibHomo sapiens (human)Kd30.000011
14-methyl-20-oxa-5,7,14,26-tetraazatetracyclo(19.3.1.1(2,6).1(8,12))heptacosa-1(25),2(26),3,5,8(27),9,11,16,21,23-decaeneHomo sapiens (human)Kd30.000011
azd5438Homo sapiens (human)Kd30.000011
pf 04217903Homo sapiens (human)Kd30.000011
gdc 0941Homo sapiens (human)Kd30.000011
kx-01Homo sapiens (human)Kd30.000011
mk 5108Homo sapiens (human)Kd30.000011
cudc 101Homo sapiens (human)Kd30.000011
arry-614Homo sapiens (human)Kd30.000011
tak 593Homo sapiens (human)Kd30.000011
mln 8237Homo sapiens (human)Kd30.000011
sgx 523Homo sapiens (human)Kd30.000011
bms 754807Homo sapiens (human)Kd30.000011
bms 777607Homo sapiens (human)Kd30.000011
sgi 1776Homo sapiens (human)Kd30.000011
pci 32765Homo sapiens (human)Kd30.000011
amg 900Homo sapiens (human)Kd30.000011
AMG-208Homo sapiens (human)Kd30.000011
at13148Homo sapiens (human)Kd30.000011
tak 733Homo sapiens (human)Kd30.000011
mk 2206Homo sapiens (human)Kd30.000011
sns 314Homo sapiens (human)Kd30.000011
lucitanibHomo sapiens (human)Kd30.000011
pf-04691502Homo sapiens (human)Kd30.000011
n-(cyanomethyl)-4-(2-((4-(4-morpholinyl)phenyl)amino)-4-pyrimidinyl)benzamideHomo sapiens (human)Kd30.000011
dcc-2036Homo sapiens (human)Kd30.000011
cabozantinibHomo sapiens (human)Kd30.000012
defactinibHomo sapiens (human)Kd30.000011
ly2584702Homo sapiens (human)Kd30.000011
incb-018424Homo sapiens (human)Kd30.000011
entrectinibHomo sapiens (human)Kd30.000011
pexidartinibHomo sapiens (human)Kd30.000011
TAK-580Homo sapiens (human)Kd30.000011
gsk 2126458Homo sapiens (human)Kd30.000011
emd1214063Homo sapiens (human)Kd30.000011
pf 3758309Homo sapiens (human)Kd30.000011
gdc 0980Homo sapiens (human)Kd30.000011
azd2014Homo sapiens (human)Kd30.000011
(5-(2,4-bis((3s)-3-methylmorpholin-4-yl)pyrido(2,3-d)pyrimidin-7-yl)-2-methoxyphenyl)methanolHomo sapiens (human)Kd30.000011
plx4032Homo sapiens (human)Kd30.000011
gsk 1363089Homo sapiens (human)Kd30.000011
arry-334543Homo sapiens (human)Kd30.000011
mk 2461Homo sapiens (human)Kd30.000011
bay 869766Homo sapiens (human)Kd30.000011
dabrafenibHomo sapiens (human)Kd30.000011
pki 587Homo sapiens (human)Kd30.000011
n-(3-fluoro-4-((1-methyl-6-(1h-pyrazol-4-yl)-1h-indazol-5 yl)oxy)phenyl)-1-(4-fluorophenyl)-6-methyl-2-oxo-1,2-dihydropyridine-3-carboxamideHomo sapiens (human)Kd30.000011
ribociclibHomo sapiens (human)Kd30.000011
mk-8033Homo sapiens (human)Kd30.000011
abemaciclibHomo sapiens (human)Kd30.000011
mk-8776Homo sapiens (human)Kd30.000011
gsk 1070916Homo sapiens (human)Kd30.000011
jnj38877605Homo sapiens (human)Kd30.000011
dinaciclibHomo sapiens (human)Kd30.000011
gilteritinibHomo sapiens (human)Kd30.000011
alectinibHomo sapiens (human)Kd30.000011
glpg0634Homo sapiens (human)Kd30.000011
encorafenibHomo sapiens (human)Kd30.000011
bms-911543Homo sapiens (human)Kd30.000011
gsk2141795Homo sapiens (human)Kd30.000011
azd8186Homo sapiens (human)Kd30.000011
cep-32496Homo sapiens (human)Kd30.000011
ceritinibHomo sapiens (human)Kd30.000011
azd1208Homo sapiens (human)Kd30.000011
vx-509Homo sapiens (human)Kd30.000011
volitinibHomo sapiens (human)Kd30.000011
osimertinibHomo sapiens (human)Kd30.000011
otssp167Homo sapiens (human)Kd30.000011
chir 258Homo sapiens (human)Kd30.000011
osi 027Homo sapiens (human)Kd30.000011
nintedanibHomo sapiens (human)Kd30.000011
bay 80-6946Homo sapiens (human)Kd30.000011

Enables

This protein enables 5 target(s):

TargetCategoryDefinition
protein bindingmolecular functionBinding to a protein. [GOC:go_curators]
ATP bindingmolecular functionBinding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator. [ISBN:0198506732]
1-phosphatidylinositol-4-phosphate 5-kinase activitymolecular functionCatalysis of the reaction: 1-phosphatidyl-1D-myo-inositol 4-phosphate + ATP = 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate + ADP + 2 H+. [EC:2.7.1.68, RHEA:14425]
1-phosphatidylinositol-5-phosphate 4-kinase activitymolecular functionCatalysis of the reaction: ATP + 1-phosphatidyl-1D-myo-inositol 5-phosphate = ADP + 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate. [EC:2.7.1.149]
protein homodimerization activitymolecular functionBinding to an identical protein to form a homodimer. [GOC:jl]

Located In

This protein is located in 7 target(s):

TargetCategoryDefinition
photoreceptor outer segmentcellular componentThe outer segment of a vertebrate photoreceptor that contains a stack of membrane discs embedded with photoreceptor proteins. [GOC:cilia, GOC:krc, GOC:pde, ISBN:0824072820, PMID:19501669, PMID:26574505, PMID:6771304]
photoreceptor inner segmentcellular componentThe inner segment of a vertebrate photoreceptor containing mitochondria, ribosomes and membranes where opsin molecules are assembled and passed to be part of the outer segment discs. [GOC:add, PMID:12019563]
nucleoplasmcellular componentThat part of the nuclear content other than the chromosomes or the nucleolus. [GOC:ma, ISBN:0124325653]
lysosomecellular componentA small lytic vacuole that has cell cycle-independent morphology found in most animal cells and that contains a variety of hydrolases, most of which have their maximal activities in the pH range 5-6. The contained enzymes display latency if properly isolated. About 40 different lysosomal hydrolases are known and lysosomes have a great variety of morphologies and functions. [GOC:mah, ISBN:0198506732]
autophagosomecellular componentA double-membrane-bounded compartment that engulfs endogenous cellular material as well as invading microorganisms to target them to the lytic vacuole/lysosome for degradation as part of macroautophagy. [GOC:autophagy, ISBN:0198547684, PMID:11099404]
cytosolcellular componentThe part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes. [GOC:hjd, GOC:jl]
plasma membranecellular componentThe membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins. [ISBN:0716731363]

Active In

This protein is active in 1 target(s):

TargetCategoryDefinition
plasma membranecellular componentThe membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins. [ISBN:0716731363]

Involved In

This protein is involved in 8 target(s):

TargetCategoryDefinition
regulation of autophagybiological processAny process that modulates the frequency, rate or extent of autophagy. Autophagy is the process in which cells digest parts of their own cytoplasm. [GOC:dph, GOC:tb]
megakaryocyte developmentbiological processThe process whose specific outcome is the progression of a megakaryocyte cell over time, from its formation to the mature structure. Megakaryocyte development does not include the steps involved in committing a cell to a megakaryocyte fate. A megakaryocyte is a giant cell 50 to 100 micron in diameter, with a greatly lobulated nucleus, found in the bone marrow. [CL:0000556, GOC:BHF, GOC:vk]
negative regulation of insulin receptor signaling pathwaybiological processAny process that stops, prevents, or reduces the frequency, rate or extent of insulin receptor signaling. [GOC:bf]
autophagosome-lysosome fusionbiological processThe process in which autophagosomes, double-membraned vesicles containing cytoplasmic material, fuse with a vacuole (yeast) or lysosome (e.g. mammals and insects). In the case of yeast, inner membrane-bounded structures (autophagic bodies) appear in the vacuole. Fusion provides an acidic environment and digestive function to the interior of the autophagosome. [PMID:28077293]
vesicle-mediated cholesterol transportbiological processThe directed movement of cholesterol, cholest-5-en-3-beta-ol, or cholesterol-containing compounds, by membrane-bounded vesicles. [GOC:ascb_2009, GOC:dph, GOC:tb]
1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate biosynthetic processbiological processThe chemical reactions and pathways resulting in the formation of 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate. [GO_REF:0000068, GOC:di, GOC:TermGenie, PMID:22562153]
positive regulation of autophagosome assemblybiological processAny process that activates or increases the frequency, rate or extent of autophagic vacuole assembly. [GOC:autophagy, GOC:BHF]
phosphatidylinositol phosphate biosynthetic processbiological processThe chemical reactions and pathways resulting in the formation of phosphatidylinositol phosphate. [ISBN:0198506732]