Identification
HMDB Protein ID CDBP00721
Secondary Accession Numbers Not Available
Name Sphingomyelin phosphodiesterase
Description Not Available
Synonyms
  1. Acid sphingomyelinase
  2. aSMase
Gene Name SMPD1
Protein Type Enzyme
Biological Properties
General Function Involved in hydrolase activity
Specific Function Converts sphingomyelin to ceramide. Also has phospholipase C activities toward 1,2-diacylglycerolphosphocholine and 1,2-diacylglycerolphosphoglycerol. Isoform 2 and isoform 3 have lost catalytic activity.
GO Classification
Biological Process
response to drug
nervous system development
glycosphingolipid metabolic process
cell death
signal transduction
positive regulation of apoptotic process
ceramide biosynthetic process
negative regulation of MAP kinase activity
positive regulation of protein dephosphorylation
response to cocaine
sphingomyelin catabolic process
sphingomyelin metabolic process
termination of signal transduction
Cellular Component
lamellar body
lysosomal lumen
extracellular space
Function
hydrolase activity, acting on ester bonds
catalytic activity
hydrolase activity
sphingomyelin phosphodiesterase activity
lipase activity
phospholipase activity
Molecular Function
hydrolase activity, acting on glycosyl bonds
sphingomyelin phosphodiesterase activity
Process
sphingomyelin metabolic process
sphingomyelin catabolic process
organophosphate metabolic process
phospholipid metabolic process
metabolic process
Cellular Location
  1. Lysosome
Pathways
Gene Properties
Chromosome Location 11
Locus 11p15.4-p15.1
SNPs SMPD1
Gene Sequence
>1890 bp
ATGCCCCGCTACGGAGCGTCACTCCGCCAGAGCTGCCCCAGGTCCGGCCGGGAGCAGGGA
CAAGACGGGACCGCCGGAGCCCCCGGACTCCTTTGGATGGGCCTGGTGCTGGCGCTGGCG
CTGGCGCTGGCGCTGGCTCTGTCTGACTCTCGGGTTCTCTGGGCTCCGGCAGAGGCTCAC
CCTCTTTCTCCCCAAGGCCATCCTGCCAGGTTACATCGCATAGTGCCCCGGCTCCGAGAT
GTCTTTGGGTGGGGGAACCTCACCTGCCCAATCTGCAAAGGTCTATTCACCGCCATCAAC
CTCGGGCTGAAGAAGGAACCCAATGTGGCTCGCGTGGGCTCCGTGGCCATCAAGCTGTGC
AATCTGCTGAAGATAGCACCACCTGCCGTGTGCCAATCCATTGTCCACCTCTTTGAGGAT
GACATGGTGGAGGTGTGGAGACGCTCAGTGCTGAGCCCATCTGAGGCCTGTGGCCTGCTC
CTGGGCTCCACCTGTGGGCACTGGGACATTTTCTCATCTTGGAACATCTCTTTGCCTACT
GTGCCGAAGCCGCCCCCCAAACCCCCTAGCCCCCCAGCCCCAGGTGCCCCTGTCAGCCGC
ATCCTCTTCCTCACTGACCTGCACTGGGATCATGACTACCTGGAGGGCACGGACCCTGAC
TGTGCAGACCCACTGTGCTGCCGCCGGGGTTCTGGCCTGCCGCCCGCATCCCGGCCAGGT
GCCGGATACTGGGGCGAATACAGCAAGTGTGACCTGCCCCTGAGGACCCTGGAGAGCCTG
TTGAGTGGGCTGGGCCCAGCCGGCCCTTTTGATATGGTGTACTGGACAGGAGACATCCCC
GCACATGATGTCTGGCACCAGACTCGTCAGGACCAACTGCGGGCCCTGACCACCGTCACA
GCACTTGTGAGGAAGTTCCTGGGGCCAGTGCCAGTGTACCCTGCTGTGGGTAACCATGAA
AGCATACCTGTCAATAGCTTCCCTCCCCCCTTCATTGAGGGCAACCACTCCTCCCGCTGG
CTCTATGAAGCGATGGCCAAGGCTTGGGAGCCCTGGCTGCCTGCCGAAGCCCTGCGCACC
CTCAGAATTGGGGGGTTCTATGCTCTTTCCCCATACCCCGGTCTCCGCCTCATCTCTCTC
AATATGAATTTTTGTTCCCGTGAGAACTTCTGGCTCTTGATCAACTCCACGGATCCCGCA
GGACAGCTCCAGTGGCTGGTGGGGGAGCTTCAGGCTGCTGAGGATCGAGGAGACAAAGTG
CATATAATTGGCCACATTCCCCCAGGGCACTGTCTGAAGAGCTGGAGCTGGAATTATTAC
CGAATTGTAGCCAGGTATGAGAACACCCTGGCTGCTCAGTTCTTTGGCCACACTCATGTG
GATGAATTTGAGGTCTTCTATGATGAAGAGACTCTGAGCCGGCCGCTGGCTGTAGCCTTC
CTGGCACCCAGTGCAACTACCTACATCGGCCTTAATCCTGGTTACCGTGTGTACCAAATA
GATGGAAACTACTCCAGGAGCTCTCACGTGGTCCTGGACCATGAGACCTACATCCTGAAT
CTGACCCAGGCAAACATACCGGGAGCCATACCGCACTGGCAGCTTCTCTACAGGGCTCGA
GAAACCTATGGGCTGCCCAACACACTGCCTACCGCCTGGCACAACCTGGTATATCGCATG
CGGGGCGACATGCAACTTTTCCAGACCTTCTGGTTTCTCTACCATAAGGGCCACCCACCC
TCGGAGCCCTGTGGCACGCCCTGCCGTCTGGCTACTCTTTGTGCCCAGCTCTCTGCCCGT
GCTGACAGCCCTGCTCTGTGCCGCCACCTGATGCCAGATGGGAGCCTCCCAGAGGCCCAG
AGCCTGTGGCCAAGGCCACTGTTTTGCTAG
Protein Properties
Number of Residues 629
Molecular Weight 69935.53
Theoretical pI 7.29
Pfam Domain Function
Signals Not Available
Transmembrane Regions Not Available
Protein Sequence
>Sphingomyelin phosphodiesterase
MPRYGASLRQSCPRSGREQGQDGTAGAPGLLWMGLVLALALALALALSDSRVLWAPAEAH
PLSPQGHPARLHRIVPRLRDVFGWGNLTCPICKGLFTAINLGLKKEPNVARVGSVAIKLC
NLLKIAPPAVCQSIVHLFEDDMVEVWRRSVLSPSEACGLLLGSTCGHWDIFSSWNISLPT
VPKPPPKPPSPPAPGAPVSRILFLTDLHWDHDYLEGTDPDCADPLCCRRGSGLPPASRPG
AGYWGEYSKCDLPLRTLESLLSGLGPAGPFDMVYWTGDIPAHDVWHQTRQDQLRALTTVT
ALVRKFLGPVPVYPAVGNHESTPVNSFPPPFIEGNHSSRWLYEAMAKAWEPWLPAEALRT
LRIGGFYALSPYPGLRLISLNMNFCSRENFWLLINSTDPAGQLQWLVGELQAAEDRGDKV
HIIGHIPPGHCLKSWSWNYYRIVARYENTLAAQFFGHTHVDEFEVFYDEETLSRPLAVAF
LAPSATTYIGLNPGYRVYQIDGNYSGSSHVVLDHETYILNLTQANIPGAIPHWQLLYRAR
ETYGLPNTLPTAWHNLVYRMRGDMQLFQTFWFLYHKGHPPSEPCGTPCRLATLCAQLSAR
ADSPALCRHLMPDGSLPEAQSLWPRPLFC
GenBank ID Protein 179095
UniProtKB/Swiss-Prot ID P17405
UniProtKB/Swiss-Prot Entry Name ASM_HUMAN
PDB IDs Not Available
GenBank Gene ID M59916
GeneCard ID SMPD1
GenAtlas ID SMPD1
HGNC ID HGNC:11120
References
General References Not Available