Identification
HMDB Protein ID CDBP01665
Secondary Accession Numbers Not Available
Name Laforin
Description Not Available
Synonyms
  1. LAFPTPase
  2. Lafora PTPase
Gene Name EPM2A
Protein Type Enzyme
Biological Properties
General Function Involved in carbohydrate binding
Specific Function Dual specificity protein phosphatase. May be involved in the control of glycogen metabolism, particularly in monitoring for and preventing the formation of poorly branched glycogen molecules (polyglucosans). Acts as a scaffold protein to facilitate PPP1R3C/PTG ubiquitination by NHLRC1/malin. Forms a complex with NHLRC1/malin and HSP70 and this complex suppresses the cellular toxicity of misfolded proteins by promoting their degradation through the ubiquitin-proteasome system (UPS). Isoform 2, an inactive phosphatase, could function as a dominant-negative regulator for the phosphatase activity of isoform 1.
GO Classification
Biological Process
glycogen metabolic process
nervous system development
behavior
Cellular Component
plasma membrane
nucleus
polysome
cytosol
endoplasmic reticulum
Function
phosphoprotein phosphatase activity
protein tyrosine phosphatase activity
hydrolase activity, acting on ester bonds
binding
catalytic activity
hydrolase activity
phosphoric ester hydrolase activity
phosphatase activity
protein tyrosine/serine/threonine phosphatase activity
carbohydrate binding
Molecular Function
protein tyrosine phosphatase activity
protein tyrosine/serine/threonine phosphatase activity
protein serine/threonine phosphatase activity
starch binding
Process
phosphorus metabolic process
phosphate metabolic process
dephosphorylation
protein amino acid dephosphorylation
metabolic process
primary metabolic process
carbohydrate metabolic process
cellular metabolic process
Cellular Location
  1. Cell membrane
  2. Nucleus
  3. Isoform 2:Endoplasmic reticulum
Pathways
Gene Properties
Chromosome Location 6
Locus 6q24
SNPs EPM2A
Gene Sequence
>996 bp
ATGCGCTTCCGCTTTGGGGTGGTGGTGCCACCCGCCGTGGCCGGCGCCCGGCCGGAGCTG
CTGGTGGTGGGGTCGCGGCCCGAGCTGGGGCGTTGGGAGCCGCGCGGTGCCGTCCGCCTG
AGGCCGGCCGGCACCGCGGCGGGCGACGGGGCCCTGGCGCTGCAGGAGCCGGGCCTGTGG
CTCGGGGAGGTGGAGCTGGCGGCCGAGGAGGCGGCGCAGGACGGGGCGGAGCCGGGCCGC
GTGGACACGTTCTGGTACAAGTTCCTGAAGCGGGAGCCGGGAGGAGAGCTCTCCTGGGAA
GGCAATGGACCTCATCATGACCGTTGCTGTACTTACAATGAAAACAACTTGGTGGATGGT
GTGTATTGTCTCCCAATAGGACACTGGATTGAGGCCACTGGGCACACCAATGAAATGAAG
CACACAACAGACTTCTATTTTAATATTGCAGGCCACCAAGCCATGCATTATTCAAGAATT
CTACCAAATATCTGGCTGGGTAGCTGCCCTCGTCAGGTGGAACATGTAACCATCAAACTG
AAGCATGAATTGGGGATTACAGCTGTAATGAATTTCCAGACTGAATGGGATATTGTACAG
AATTCCTCAGGCTGTAACCGCTACCCAGAGCCCATGACTCCAGACACTATGATTAAACTA
TATAGGGAAGAAGGCTTGGCCTACATCTGGATGCCAACACCAGATATGAGCACCGAAGGC
CGAGTACAGATGCTGCCCCAGGCGGTGTGCCTGCTGCATGCGCTGCTGGAGAAGGGACAC
ATCGTGTACGTGCACTGCAACGCTGGGGTGGGCCGCTCCACCGCGGCTGTCTGCGGCTGG
CTCCAGTATGTGATGGGCTGGAATCTGAGGAAGGTGCAGTATTTCCTCATGGCCAAGAGG
CCGGCTGTCTACATTGACGAAGAGGCCTTGGCCCGGGCACAAGAAGATTTTTTCCAGAAA
TTTGGGAAGGTTCGTTCTTCTGTGTGTAGCCTGTAG
Protein Properties
Number of Residues 331
Molecular Weight 35518.41
Theoretical pI 6.265
Pfam Domain Function
Signals Not Available
Transmembrane Regions Not Available
Protein Sequence
>Laforin
MRFRFGVVVPPAVAGARPELLVVGSRPELGRWEPRGAVRLRPAGTAAGDGALALQEPGLW
LGEVELAAEEAAQDGAEPGRVDTFWYKFLKREPGGELSWEGNGPHHDRCCTYNENNLVDG
VYCLPIGHWIEATGHTNEMKHTTDFYFNIAGHQAMHYSRILPNIWLGSCPRQVEHVTIKL
KHELGITAVMNFQTEWDIVQNSSGCNRYPEPMTPDTMIKLYREEGLAYIWMPTPDMSTEG
RVQMLPQAVCLLHALLEKGHIVYVHCNAGVGRSTAAVCGWLQYVMGWNLRKVQYFLMAKR
PAVYIDEEALARAQEDFFQKFGKVRSSVCSL
GenBank ID Protein 6005986
UniProtKB/Swiss-Prot ID O95278
UniProtKB/Swiss-Prot Entry Name EPM2A_HUMAN
PDB IDs Not Available
GenBank Gene ID AF084535
GeneCard ID EPM2A
GenAtlas ID EPM2A
HGNC ID HGNC:3413
References
General References Not Available