B0KWC1 (PI4KB_CALJA) Reviewed, UniProtKB/Swiss-Prot
Last modified
October 19, 2011.
Version 23.
History...
Names·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: Phosphatidylinositol 4-kinase beta Short name=PI4K-beta Short name=PI4Kbeta Short name=PtdIns 4-kinase beta EC=2.7.1.67 | ||||
| Gene names |
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| Organism | Callithrix jacchus (White-tufted-ear marmoset) [Complete proteome] | ||||
| Taxonomic identifier | 9483 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Platyrrhini › Cebidae › Callitrichinae › Callithrix |
Protein attributes
| Sequence length | 816 AA. |
| Sequence status | Complete. |
| Protein existence | Inferred from homology |
General annotation (Comments)
| Function | Phosphorylates phosphatidylinositol (PI) in the first committed step in the production of the second messenger inositol-1,4,5,-trisphosphate (PIP). May regulate Golgi disintegration/reorganization during mitosis, possibly via its phosphorylation By similarity. Involved in Golgi-to-plasma membrane trafficking By similarity. |
| Catalytic activity | ATP + 1-phosphatidyl-1D-myo-inositol = ADP + 1-phosphatidyl-1D-myo-inositol 4-phosphate. |
| Enzyme regulation | Inhibited by wortmannin By similarity. Increased kinase activity upon interaction with NCS1/FREQ By similarity. |
| Subunit structure | Interacts with NCS1/FREQ in a calcium-independent manner By similarity. Interacts with CALN1/CABP8 and CALN2/CABP7; in a calcium-dependent manner By similarity. This binding competes with NCS1/FREQ binding By similarity. Interacts with ARF1 and ARF3 By similarity. |
| Subcellular location | Endomembrane system By similarity. Mitochondrion outer membrane; Peripheral membrane protein By similarity. Rough endoplasmic reticulum membrane; Peripheral membrane protein By similarity. Golgi apparatus By similarity. Note: Found in the outer membrane of mitochondria and membranes of the rough endoplasmic reticulum. Recruited to the Golgi complex by the small GTPase ARF to stimulate the synthesis of phosphatidylinositol 4,5-biphosphate (PIP2) on the Golgi complex By similarity. |
| Sequence similarities | Belongs to the PI3/PI4-kinase family. Type III PI4K subfamily. Contains 1 PI3K/PI4K domain. Contains 1 PIK helical domain. |
Ontologies
| Keywords | |
|---|---|
| Cellular component | Endoplasmic reticulum Golgi apparatus Membrane Mitochondrion Mitochondrion outer membrane |
| Ligand | ATP-binding Nucleotide-binding |
| Molecular function | Kinase Transferase |
| PTM | Phosphoprotein |
| Technical term | Complete proteome |
| Gene Ontology (GO) | |
| Biological process | phosphatidylinositol-mediated signaling Inferred from electronic annotation. Source: InterPro |
| Cellular component | Golgi apparatus Inferred from electronic annotation. Source: UniProtKB-SubCell mitochondrial outer membraneInferred from electronic annotation. Source: UniProtKB-SubCell rough endoplasmic reticulum membraneInferred from electronic annotation. Source: UniProtKB-SubCell |
| Molecular function | 1-phosphatidylinositol 4-kinase activity Inferred from electronic annotation. Source: EC ATP bindingInferred from electronic annotation. Source: UniProtKB-KW |
| Complete GO annotation... | |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 816 | 816 | Phosphatidylinositol 4-kinase beta | PRO_0000365163 | |||||
Regions | |||||||||
| Domain | 52 – 242 | 191 | PIK helical | ||||||
| Domain | 559 – 765 | 207 | PI3K/PI4K | ||||||
| Compositional bias | 117 – 120 | 4 | Poly-Arg | ||||||
Amino acid modifications | |||||||||
| Modified residue | 258 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 263 | 1 | Phosphothreonine By similarity | ||||||
| Modified residue | 266 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 277 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 280 | 1 | Phosphothreonine By similarity | ||||||
| Modified residue | 294 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 428 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 438 | 1 | Phosphothreonine By similarity | ||||||
| Modified residue | 511 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 517 | 1 | Phosphothreonine By similarity | ||||||
| Modified residue | 519 | 1 | Phosphothreonine By similarity | ||||||
Sequences
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References
| [1] | "NISC comparative sequencing initiative." Antonellis A., Benjamin B., Blakesley R.W., Bouffard G.G., Brinkley C., Brooks S., Chu G., Chub I., Coleman H., Fuksenko T., Gestole M., Gregory M., Guan X., Gupta J., Gurson N., Han E., Han J., Hansen N. Green E.D.Submitted (JAN-2008) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | DP000572 Genomic DNA. Translation: ABY82093.1. |
3D structure databases | |
| ProteinModelPortal | B0KWC1. |
| ModBase | Search... |
Protocols and materials databases | |
| StructuralBiologyKnowledgebase | Search... |
Phylogenomic databases | |
| GeneTree | ENSGT00550000074892. |
| HOVERGEN | HBG053597. |
| OrthoDB | EOG49078C. |
Family and domain databases | |
| InterPro | IPR011009. Kinase-like_dom. IPR000403. PI3/4_kinase_cat. IPR018936. PI3/4_kinase_CS. IPR015433. PI_Kinase. [Graphical view] |
| Gene3D | G3DSA:1.10.1070.11. PI3/4_kinase_cat. 1 hit. |
| PANTHER | PTHR10048. PI_Kinase. 1 hit. |
| Pfam | PF00454. PI3_PI4_kinase. 1 hit. [Graphical view] |
| SMART | SM00146. PI3Kc. 1 hit. [Graphical view] |
| SUPFAM | SSF56112. Kinase_like. 1 hit. |
| PROSITE | PS00915. PI3_4_KINASE_1. 1 hit. PS00916. PI3_4_KINASE_2. 1 hit. PS50290. PI3_4_KINASE_3. 1 hit. PS51545. PIK_HELICAL. 1 hit. [Graphical view] |
| ProtoNet | Search... |
Entry information
| Entry name | PI4KB_CALJA | ||||||||
| Accession | Primary (citable) accession number: B0KWC1 | ||||||||
| Entry history |
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| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
Relevant documents
| SIMILARITY comments Index of protein domains and families |

Clusters with