SRSF protein kinase 2

NameSRSF protein kinase 2
Synonyms
  • 2.7.11.1
  • Serine/arginine-rich protein-specific kinase 2
  • SFRS protein kinase 2
  • SR-protein-specific kinase 2
Gene NameSRPK2
OrganismHuman
Amino acid sequence
>lcl|BSEQ0037279|SRSF protein kinase 2
MSVNSEKSSSSERPEPQQKAPLVPPPPPPPPPPPPPLPDPTPPEPEEEILGSDDEEQEDP
ADYCKGGYHPVKIGDLFNGRYHVIRKLGWGHFSTVWLCWDMQGKRFVAMKVVKSAQHYTE
TALDEIKLLKCVRESDPSDPNKDMVVQLIDDFKISGMNGIHVCMVFEVLGHHLLKWIIKS
NYQGLPVRCVKSIIRQVLQGLDYLHSKCKIIHTDIKPENILMCVDDAYVRRMAAEATEWQ
KAGAPPPSGSAVSTAPQQKPIGKISKNKKKKLKKKQKRQAELLEKRLQEIEELEREAERK
IIEENITSAAPSNDQDGEYCPEVKLKTTGLEEAAEAETAKDNGEAEDQEEKEDAEKENIE
KDEDDVDQELANIDPTWIESPKTNGHIENGPFSLEQQLDDEDDDEEDCPNPEEYNLDEPN
AESDYTYSSSYEQFNGELPNGRHKIPESQFPEFSTSLFSGSLEPVACGSVLSEGSPLTEQ
EESSPSHDRSRTVSASSTGDLPKAKTRAADLLVNPLDPRNADKIRVKIADLGNACWVHKH
FTEDIQTRQYRSIEVLIGAGYSTPADIWSTACMAFELATGDYLFEPHSGEDYSRDEDHIA
HIIELLGSIPRHFALSGKYSREFFNRRGELRHITKLKPWSLFDVLVEKYGWPHEDAAQFT
DFLIPMLEMVPEKRASAGECLRHPWLNS
Number of residues688
Molecular Weight77525.955
Theoretical pI4.65
GO Classification
Functions
  • poly(A) RNA binding
  • ATP binding
  • protein serine/threonine kinase activity
  • 14-3-3 protein binding
  • magnesium ion binding
Processes
  • regulation of mRNA splicing, via spliceosome
  • nuclear speck organization
  • cell differentiation
  • innate immune response
  • protein phosphorylation
  • positive regulation of cell proliferation
  • intracellular signal transduction
  • angiogenesis
  • positive regulation of gene expression
  • positive regulation of cell cycle
  • positive regulation of neuron apoptotic process
  • negative regulation of viral genome replication
  • positive regulation of viral genome replication
  • RNA splicing
  • spliceosomal complex assembly
Components
  • nucleoplasm
  • cytoplasm
  • nucleus
  • nucleolus
General FunctionProtein serine/threonine kinase activity
Specific FunctionSerine/arginine-rich protein-specific kinase which specifically phosphorylates its substrates at serine residues located in regions rich in arginine/serine dipeptides, known as RS domains and is involved in the phosphorylation of SR splicing factors and the regulation of splicing. Promotes neuronal apoptosis by up-regulating cyclin-D1 (CCND1) expression. This is done by the phosphorylation of SRSF2, leading to the suppression of p53/TP53 phosphorylation thereby relieving the repressive effect of p53/TP53 on cyclin-D1 (CCND1) expression. Phosphorylates ACIN1, and redistributes it from the nuclear speckles to the nucleoplasm, resulting in cyclin A1 but not cyclin A2 up-regulation. Plays an essential role in spliceosomal B complex formation via the phosphorylation of DDX23/PRP28. Can mediate hepatitis B virus (HBV) core protein phosphorylation. Plays a negative role in the regulation of HBV replication through a mechanism not involving the phosphorylation of the core protein but by reducing the packaging efficiency of the pregenomic RNA (pgRNA) without affecting the formation of the viral core particles.
Pfam Domain Function
Transmembrane RegionsNot Available
GenBank Protein ID1857944
UniProtKB IDP78362
UniProtKB Entry NameSRPK2_HUMAN
Cellular LocationCytoplasm
Gene sequence
>lcl|BSEQ0019557|SRSF protein kinase 2 (SRPK2)
ATGTCAGTTAACTCTGAGAAGTCGTCCTCTTCAGAAAGGCCGGAGCCTCAACAGAAAGCT
CCTTTAGTTCCTCCTCCTCCACCGCCACCACCACCACCACCGCCACCTTTGCCAGACCCC
ACACCCCCGGAGCCAGAGGAGGAGATCCTGGGATCAGATGATGAGGAGCAAGAGGACCCT
GCGGACTACTGCAAAGGTGGATATCATCCAGTGAAAATTGGAGACCTCTTCAATGGCCGG
TATCATGTTATTAGAAAGCTTGGATGGGGGCACTTCTCTACTGTCTGGCTGTGCTGGGAT
ATGCAGGGGAAAAGATTTGTTGCAATGAAAGTTGTAAAAAGTGCCCAGCATTATACGGAG
ACAGCCTTGGATGAAATAAAATTGCTCAAATGTGTTCGAGAAAGTGATCCCAGTGACCCA
AACAAAGACATGGTGGTCCAGCTCATTGACGACTTCAAGATTTCAGGCATGAATGGGATA
CATGTCTGCATGGTCTTCGAAGTACTTGGCCACCATCTCCTCAAGTGGATCATCAAATCC
AACTATCAAGGCCTCCCAGTACGTTGTGTGAAGAGTATCATTCGACAGGTCCTTCAAGGG
TTAGATTACTTACACAGTAAGTGCAAGATCATTCATACTGACATAAAGCCGGAAAATATC
TTGATGTGTGTGGATGATGCATATGTGAGAAGAATGGCAGCTGAGGCCACTGAGTGGCAG
AAAGCAGGTGCTCCTCCTCCTTCAGGGTCTGCAGTGAGTACGGCTCCACAGCAGAAACCT
ATAGGAAAAATATCTAAAAACAAAAAGAAAAAACTGAAAAAGAAACAGAAGAGGCAGGCT
GAGTTATTGGAGAAGCGCCTGCAGGAGATAGAAGAATTGGAGCGAGAAGCTGAAAGGAAA
ATAATAGAAGAAAACATCACCTCAGCTGCACCTTCCAATGACCAGGATGGCGAATACTGC
CCAGAGGTGAAACTAAAAACAACAGGATTAGAGGAGGCGGCTGAGGCAGAGACTGCAAAG
GACAATGGTGAAGCTGAGGACCAGGAAGAGAAAGAAGATGCTGAGAAAGAAAACATTGAA
AAAGATGAAGATGATGTAGATCAGGAACTTGCGAACATAGACCCTACGTGGATAGAATCA
CCTAAAACCAATGGCCATATTGAGAATGGCCCATTCTCACTGGAGCAGCAACTGGACGAT
GAAGATGATGATGAAGAAGACTGCCCAAATCCTGAGGAATATAATCTTGATGAGCCAAAT
GCAGAAAGTGATTACACATATAGCAGCTCCTATGAACAATTCAATGGTGAATTGCCAAAT
GGACGACATAAAATTCCCGAGTCACAGTTCCCAGAGTTTTCCACCTCGTTGTTCTCTGGA
TCCTTAGAACCTGTGGCCTGCGGCTCTGTGCTTTCTGAGGGATCACCACTTACTGAGCAA
GAGGAGAGCAGTCCATCCCATGACAGAAGCAGAACGGTTTCAGCCTCCAGTACTGGGGAT
TTGCCAAAAGCAAAAACCCGGGCAGCTGACTTGTTGGTGAATCCCCTGGATCCGCGGAAT
GCAGATAAAATTAGAGTAAAAATTGCTGACCTGGGAAATGCTTGTTGGGTGCATAAACAC
TTCACGGAAGACATCCAGACGCGTCAGTACCGCTCCATAGAGGTTTTAATAGGAGCGGGG
TACAGCACCCCTGCGGACATCTGGAGCACGGCGTGTATGGCATTTGAGCTGGCAACGGGA
GATTATTTGTTTGAACCACATTCTGGGGAAGACTATTCCAGAGACGAAGACCACATAGCC
CACATCATAGAGCTGCTAGGCAGTATTCCAAGGCACTTTGCTCTATCTGGAAAATATTCT
CGGGAATTCTTCAATCGCAGAGGAGAACTGCGACACATCACCAAGCTGAAGCCCTGGAGC
CTCTTTGATGTACTTGTGGAAAAGTATGGCTGGCCCCATGAAGATGCTGCACAGTTTACA
GATTTCCTGATCCCGATGTTAGAAATGGTTCCAGAAAAACGAGCCTCAGCTGGCGAATGC
CTTCGGCATCCTTGGTTGAATTCTTAG
GenBank Gene IDU88666
GeneCard IDNot Available
GenAtlas IDNot Available
HGNC IDHGNC:11306
Chromosome Location7
Locus7q22-q31.1
References
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