Structure of PDB 6k4g Chain B

Receptor sequence
>6k4gB (length=301) Species: 9606 (Homo sapiens) [Search protein sequence]
VKLFRASEPILSVLMWGVNHTINELSNVPVPVMLMPDDFKAYSKIKVDNH
LFNKENLPSRFKFKEYCPMVFRNLRERFGIDDQDYQNSVTRSAPINRFLT
TYDRRFVIKTVSSEDVAEMHNILKKYHQFIVECHGNTLLPQFLGMYRLTV
DGVETYMVVTRNVFSHRLTVHRKYDLKGSEASDKEKAKDLPTFKDNDFLN
EGQKLHVGEESKKNFLEKLKRDVEFLAQLKIMDYSLLVGIHDVDRAEQFG
PGEFDPSVDVYAMKSHESSPKKEVYFMAIIDILTPPEQYSKRFNEFMSNI
L
3D structure
PDB6k4g The GTP responsiveness of PI5P4K beta evolved from a compromised trade-off between activity and specificity.
ChainB
Resolution2.7 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) K150 D278
Catalytic site (residue number reindexed from 1) K109 D233
Enzyme Commision number 2.7.1.149: 1-phosphatidylinositol-5-phosphate 4-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 GNP B F139 V148 N203 V204 F205 L282 D369 F98 V107 N162 V163 F164 L237 D281
Gene Ontology
Molecular Function
GO:0005515 protein binding
GO:0005524 ATP binding
GO:0005525 GTP binding
GO:0016301 kinase activity
GO:0016308 1-phosphatidylinositol-4-phosphate 5-kinase activity
GO:0016309 1-phosphatidylinositol-5-phosphate 4-kinase activity
GO:0042803 protein homodimerization activity
GO:0052742 phosphatidylinositol kinase activity
Biological Process
GO:0006629 lipid metabolic process
GO:0007166 cell surface receptor signaling pathway
GO:0010506 regulation of autophagy
GO:0016310 phosphorylation
GO:0046488 phosphatidylinositol metabolic process
GO:0046627 negative regulation of insulin receptor signaling pathway
GO:0046854 phosphatidylinositol phosphate biosynthetic process
GO:0061909 autophagosome-lysosome fusion
GO:1902635 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate biosynthetic process
GO:2000786 positive regulation of autophagosome assembly
Cellular Component
GO:0005634 nucleus
GO:0005654 nucleoplasm
GO:0005737 cytoplasm
GO:0005776 autophagosome
GO:0005783 endoplasmic reticulum
GO:0005789 endoplasmic reticulum membrane
GO:0005829 cytosol
GO:0005886 plasma membrane

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:6k4g, PDBe:6k4g, PDBj:6k4g
PDBsum6k4g
PubMed35504278
UniProtP78356|PI42B_HUMAN Phosphatidylinositol 5-phosphate 4-kinase type-2 beta (Gene Name=PIP4K2B)

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