Pyridoxal phosphate phosphatase

NamePyridoxal phosphate phosphatase
Synonyms
  • 3.1.3.3
  • Chronophin
  • CIN
  • PLP
  • PLP phosphatase
  • PLPP
Gene NamePDXP
OrganismHuman
Amino acid sequence
>lcl|BSEQ0010056|Pyridoxal phosphate phosphatase
MARCERLRGAALRDVLGRAQGVLFDCDGVLWNGERAVPGAPELLERLARAGKAALFVSNN
SRRARPELALRFARLGFGGLRAEQLFSSALCAARLLRQRLPGPPDAPGAVFVLGGEGLRA
ELRAAGLRLAGDPSAGDGAAPRVRAVLVGYDEHFSFAKLREACAHLRDPECLLVATDRDP
WHPLSDGSRTPGTGSLAAAVETASGRQALVVGKPSPYMFECITENFSIDPARTLMVGDRL
ETDILFGHRCGMTTVLTLTGVSRLEEAQAYLAAGQHDLVPHYYVESIADLTEGLED
Number of residues296
Molecular Weight31697.735
Theoretical pI6.51
GO Classification
Functions
  • phosphoprotein phosphatase activity
  • magnesium ion binding
  • heat shock protein binding
  • phosphoserine phosphatase activity
  • pyridoxal phosphatase activity
Processes
  • cellular response to ATP
  • actin rod assembly
  • positive regulation of actin filament depolymerization
  • protein dephosphorylation
  • pyridoxal phosphate catabolic process
  • regulation of cytokinesis
  • regulation of mitotic nuclear division
Components
  • cytosol
  • extracellular exosome
  • lamellipodium membrane
  • ruffle membrane
  • cytoskeleton
General FunctionPyridoxal phosphatase activity
Specific FunctionProtein serine phosphatase that dephosphorylates 'Ser-3' in cofilin and probably also dephosphorylates phospho-serine residues in DSTN. Regulates cofilin-dependent actin cytoskeleton reorganization. Required for normal progress through mitosis and normal cytokinesis. Does not dephosphorylate phospho-threonines in LIMK1. Does not dephosphorylate peptides containing phospho-tyrosine. Pyridoxal phosphate phosphatase. Has some activity towards pyridoxal 5'-phosphate (PLP), pyridoxine 5'-phosphate (PMP) and pyridoxine 5'-phosphate (PNP), with a highest activity with PLP followed by PNP.
Pfam Domain Function
Transmembrane RegionsNot Available
GenBank Protein ID37545684
UniProtKB IDQ96GD0
UniProtKB Entry NamePLPP_HUMAN
Cellular LocationCytoplasm
Gene sequence
>lcl|BSEQ0010057|Pyridoxal phosphate phosphatase (PDXP)
ATGGCGCGCTGCGAGAGGCTGCGCGGAGCGGCCCTGCGCGACGTGCTGGGCCGGGCGCAG
GGGGTCCTGTTCGACTGTGACGGGGTGCTGTGGAACGGCGAGCGCGCCGTGCCGGGCGCC
CCGGAGCTGCTGGAGCGGCTGGCGCGGGCCGGCAAGGCGGCTCTGTTTGTGAGCAACAAC
AGCCGGCGCGCGCGGCCCGAGCTGGCCCTGCGCTTCGCGCGCCTCGGCTTCGGGGGGCTG
CGCGCCGAGCAGCTCTTCAGCTCCGCGCTGTGCGCCGCGCGCCTGCTGCGCCAGCGCCTG
CCCGGGCCTCCGGACGCGCCGGGCGCCGTGTTCGTGCTGGGCGGCGAGGGGCTGCGCGCC
GAGCTGCGCGCCGCGGGGCTGCGCCTGGCCGGGGACCCGAGCGCGGGGGACGGCGCGGCC
CCGCGCGTGCGCGCCGTGCTTGTGGGCTACGACGAGCACTTCTCCTTCGCCAAGCTGAGG
GAGGCGTGCGCGCACCTGCGCGACCCCGAGTGCCTACTCGTGGCCACCGACCGTGACCCA
TGGCACCCGCTGAGCGACGGCAGCCGGACCCCTGGCACCGGGAGCCTGGCCGCTGCAGTG
GAGACAGCCTCGGGACGCCAGGCCCTGGTGGTGGGCAAGCCCAGCCCCTACATGTTCGAG
TGCATCACGGAGAACTTCAGCATCGACCCCGCACGCACGCTTATGGTGGGTGACCGCCTG
GAGACCGACATCCTCTTTGGCCACCGCTGCGGCATGACCACTGTGCTCACGCTCACAGGA
GTCTCCCGCCTAGAAGAGGCCCAGGCCTACCTAGCGGCCGGCCAGCACGACCTCGTGCCC
CATTACTATGTGGAGAGCATCGCAGACTTGACAGAGGGGTTGGAGGACTGA
GenBank Gene IDAY125047
GeneCard IDNot Available
GenAtlas IDPDXP
HGNC IDHGNC:30259
Chromosome Location22
Locus22cen-q12.3
References
  1. Jang YM, Kim DW, Kang TC, Won MH, Baek NI, Moon BJ, Choi SY, Kwon OS: Human pyridoxal phosphatase. Molecular cloning, functional expression, and tissue distribution. J Biol Chem. 2003 Dec 12;278(50):50040-6. Epub 2003 Sep 30. 14522954
  2. Dunham I, Shimizu N, Roe BA, Chissoe S, Hunt AR, Collins JE, Bruskiewich R, Beare DM, Clamp M, Smink LJ, Ainscough R, Almeida JP, Babbage A, Bagguley C, Bailey J, Barlow K, Bates KN, Beasley O, Bird CP, Blakey S, Bridgeman AM, Buck D, Burgess J, Burrill WD, O'Brien KP, et al.: The DNA sequence of human chromosome 22. Nature. 1999 Dec 2;402(6761):489-95. 10591208
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  4. Gao G, Fonda ML: Identification of an essential cysteine residue in pyridoxal phosphatase from human erythrocytes. J Biol Chem. 1994 Mar 18;269(11):8234-9. 8132548
  5. Gohla A, Birkenfeld J, Bokoch GM: Chronophin, a novel HAD-type serine protein phosphatase, regulates cofilin-dependent actin dynamics. Nat Cell Biol. 2005 Jan;7(1):21-9. Epub 2004 Dec 5. 15580268
  6. Burkard TR, Planyavsky M, Kaupe I, Breitwieser FP, Burckstummer T, Bennett KL, Superti-Furga G, Colinge J: Initial characterization of the human central proteome. BMC Syst Biol. 2011 Jan 26;5:17. doi: 10.1186/1752-0509-5-17. 21269460
  7. Almo SC, Bonanno JB, Sauder JM, Emtage S, Dilorenzo TP, Malashkevich V, Wasserman SR, Swaminathan S, Eswaramoorthy S, Agarwal R, Kumaran D, Madegowda M, Ragumani S, Patskovsky Y, Alvarado J, Ramagopal UA, Faber-Barata J, Chance MR, Sali A, Fiser A, Zhang ZY, Lawrence DS, Burley SK: Structural genomics of protein phosphatases. J Struct Funct Genomics. 2007 Sep;8(2-3):121-40. Epub 2007 Dec 5. 18058037