Structure of PDB 3hhm Chain A

Receptor sequence
>3hhmA (length=1032) Species: 9606 (Homo sapiens) [Search protein sequence]
SYYHHHHHHDYPSSGELWGIHLMPPRILVECLLPNGMIVTLECLREATLI
TIKHELFKEARKYPLHQLLQDESSYIFVSVTQEAEREEFFDETRRLCDLR
LFQPFLKVIEPVGNREEKILNREIGFAIGMPVCEFDMVKDPEVQDFRRNI
LNVCKEAVDLRDLNSPHSRAMYVYPPNVESSPELPKHIYNKLDKGQIIVV
IWVIVSPNNDKQKYTLKINHDCVPEQVIAEAIRKKTRSMLLSSEQLKLCV
LEYQGKYILKVCGCDEYFLEKYPLSQYKYIRSCIMLGRMPNLMLMAKESL
YSQLPMDCFTMPSYSRETSTKSLWVINSALRIKILCATYVNVNIRDIDKI
YVRTGIYHGGEPLCDNVNTQRVPCSNPRWNEWLNYDIYIPDLPRAARLCL
SICSVKGRKPLAWGNINLFDYTDTLVSGKMALNLWPVPHGLEDLLNPIGV
TGSNPNKETPCLELEFDWFSSVVKFPDMSVIEEHANWSVSREAGFSYSHA
GLSNRRENDKEQLKAISTRDPLSEITEQEKDFLWSHRHYCVTIPEILPKL
LLSVKWNSRDEVAQMYCLVKDWPPIKPEQAMELLDCNYPDPMVRGFAVRC
LEKYLTDDKLSQYLIQLVQVLKYEQYLDNLLVRFLLKKALTNQRIGHFFF
WHLKSEMHNKTVSQRFGLLLESYCRACGMYLKHLNRQVEAMEKLINLTDI
LKQEKKDETQKVQMKFLVEQMRRPDFMDALQGFLSPLNPAHQLGNLRLEE
CRIMSSAKRPLWLNWENPDIMSELLFQNNEIIFKNGDDLRQDMLTLQIIR
IMENIWQNQGLDLRMLPYGCLSIGDCVGLIEVVRNSHTIMQIQCKGGLKG
ALQFNSHTLHQWLKDKNKGEIYDAAIDLFTRSCAGYCVATFILGIGDRHN
SNIMVKDDGQLFHIDFGHFLDHPFVLTQDFLIVISKGAQECTKTREFERF
QEMCYKAYLAIRQHANLFINLFSMMLGSGMPELQSFDDIAYIRKTLALDK
TEQEALEYFMKQMNDARHGGWTTKMDWIFHTI
3D structure
PDB3hhm A frequent kinase domain mutation that changes the interaction between PI3K{alpha} and the membrane.
ChainA
Resolution2.8 Å
3D
structure
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Enzymatic activity
Enzyme Commision number 2.7.11.1: non-specific serine/threonine protein kinase.
2.7.1.137: phosphatidylinositol 3-kinase.
2.7.1.153: phosphatidylinositol-4,5-bisphosphate 3-kinase.
Interaction with ligand
Site
#		 Ligand Ligand
chain		 Binding residues on receptor
(original residue number in PDB)		 Binding residues on receptor
(residue number reindexed from 1)		 Binding affinity
BS01 KWT A M772 K776 I800 K802 Y836 E849 V850 V851 I932 D933 M754 K758 I782 K784 Y818 E831 V832 V833 I914 D915 PDBbind-CN: -logKd/Ki=7.92,IC50=11.9nM
BindingDB: IC50=12nM,Kd=5.4nM,Ki=120nM
Gene Ontology
Molecular Function
GO:0004674 protein serine/threonine kinase activity
GO:0005515 protein binding
GO:0005524 ATP binding
GO:0016301 kinase activity
GO:0016303 1-phosphatidylinositol-3-kinase activity
GO:0030295 protein kinase activator activity
GO:0035005 1-phosphatidylinositol-4-phosphate 3-kinase activity
GO:0043560 insulin receptor substrate binding
GO:0044024 histone H2AS1 kinase activity
GO:0046934 1-phosphatidylinositol-4,5-bisphosphate 3-kinase activity
GO:0106310 protein serine kinase activity
Biological Process
GO:0001525 angiogenesis
GO:0001889 liver development
GO:0001944 vasculature development
GO:0006006 glucose metabolic process
GO:0006629 lipid metabolic process
GO:0006909 phagocytosis
GO:0007173 epidermal growth factor receptor signaling pathway
GO:0008286 insulin receptor signaling pathway
GO:0010468 regulation of gene expression
GO:0010592 positive regulation of lamellipodium assembly
GO:0010629 negative regulation of gene expression
GO:0014823 response to activity
GO:0014870 response to muscle inactivity
GO:0016242 negative regulation of macroautophagy
GO:0016310 phosphorylation
GO:0030036 actin cytoskeleton organization
GO:0030168 platelet activation
GO:0030835 negative regulation of actin filament depolymerization
GO:0031295 T cell costimulation
GO:0032008 positive regulation of TOR signaling
GO:0032869 cellular response to insulin stimulus
GO:0035994 response to muscle stretch
GO:0036092 phosphatidylinositol-3-phosphate biosynthetic process
GO:0038084 vascular endothelial growth factor signaling pathway
GO:0040014 regulation of multicellular organism growth
GO:0043201 response to L-leucine
GO:0043276 anoikis
GO:0043457 regulation of cellular respiration
GO:0043491 phosphatidylinositol 3-kinase/protein kinase B signal transduction
GO:0043524 negative regulation of neuron apoptotic process
GO:0043542 endothelial cell migration
GO:0046854 phosphatidylinositol phosphate biosynthetic process
GO:0048009 insulin-like growth factor receptor signaling pathway
GO:0048015 phosphatidylinositol-mediated signaling
GO:0048661 positive regulation of smooth muscle cell proliferation
GO:0050852 T cell receptor signaling pathway
GO:0051897 positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction
GO:0055119 relaxation of cardiac muscle
GO:0060048 cardiac muscle contraction
GO:0060612 adipose tissue development
GO:0071333 cellular response to glucose stimulus
GO:0071464 cellular response to hydrostatic pressure
GO:0071548 response to dexamethasone
GO:0086003 cardiac muscle cell contraction
GO:0097009 energy homeostasis
GO:0110053 regulation of actin filament organization
GO:0141068 autosome genomic imprinting
GO:1903544 response to butyrate
GO:1905477 positive regulation of protein localization to membrane
GO:2000270 negative regulation of fibroblast apoptotic process
GO:2000811 negative regulation of anoikis
Cellular Component
GO:0005737 cytoplasm
GO:0005829 cytosol
GO:0005886 plasma membrane
GO:0005942 phosphatidylinositol 3-kinase complex
GO:0005943 phosphatidylinositol 3-kinase complex, class IA
GO:0005944 phosphatidylinositol 3-kinase complex, class IB
GO:0014704 intercalated disc
GO:0030027 lamellipodium
GO:0048471 perinuclear region of cytoplasm

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:3hhm, PDBe:3hhm, PDBj:3hhm
PDBsum3hhm
PubMed19805105
UniProtP42336|PK3CA_HUMAN Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform (Gene Name=PIK3CA)

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