Beta-galactosidase

NameBeta-galactosidase
Synonyms
  • 3.2.1.23
  • Acid beta-galactosidase
  • Elastin receptor 1
  • ELNR1
  • Lactase
Gene NameGLB1
OrganismHuman
Amino acid sequence
>lcl|BSEQ0009300|Beta-galactosidase
MPGFLVRILPLLLVLLLLGPTRGLRNATQRMFEIDYSRDSFLKDGQPFRYISGSIHYSRV
PRFYWKDRLLKMKMAGLNAIQTYVPWNFHEPWPGQYQFSEDHDVEYFLRLAHELGLLVIL
RPGPYICAEWEMGGLPAWLLEKESILLRSSDPDYLAAVDKWLGVLLPKMKPLLYQNGGPV
ITVQVENEYGSYFACDFDYLRFLQKRFRHHLGDDVVLFTTDGAHKTFLKCGALQGLYTTV
DFGTGSNITDAFLSQRKCEPKGPLINSEFYTGWLDHWGQPHSTIKTEAVASSLYDILARG
ASVNLYMFIGGTNFAYWNGANSPYAAQPTSYDYDAPLSEAGDLTEKYFALRNIIQKFEKV
PEGPIPPSTPKFAYGKVTLEKLKTVGAALDILCPSGPIKSLYPLTFIQVKQHYGFVLYRT
TLPQDCSNPAPLSSPLNGVHDRAYVAVDGIPQGVLERNNVITLNITGKAGATLDLLVENM
GRVNYGAYINDFKGLVSNLTLSSNILTDWTIFPLDTEDAVRSHLGGWGHRDSGHHDEAWA
HNSSNYTLPAFYMGNFSIPSGIPDLPQDTFIQFPGWTKGQVWINGFNLGRYWPARGPQLT
LFVPQHILMTSAPNTITVLELEWAPCSSDDPELCAVTFVDRPVIGSSVTYDHPSKPVEKR
LMPPPPQKNKDSWLDHV
Number of residues677
Molecular Weight76074.22
Theoretical pINot Available
GO Classification
Functions
  • beta-galactosidase activity
  • galactoside binding
Processes
  • glycosaminoglycan metabolic process
  • keratan sulfate metabolic process
  • sphingolipid metabolic process
  • keratan sulfate catabolic process
  • glycosaminoglycan catabolic process
  • glycosphingolipid metabolic process
  • dolichol-linked oligosaccharide biosynthetic process
  • galactose catabolic process
  • small molecule metabolic process
  • cellular carbohydrate metabolic process
  • carbohydrate metabolic process
  • cellular protein metabolic process
  • post-translational protein modification
  • protein N-linked glycosylation via asparagine
Components
  • lysosomal lumen
  • cytoplasm
  • Golgi apparatus
  • extracellular exosome
  • perinuclear region of cytoplasm
  • intracellular membrane-bounded organelle
General FunctionGalactoside binding
Specific FunctionCleaves beta-linked terminal galactosyl residues from gangliosides, glycoproteins, and glycosaminoglycans.Isoform 2 has no beta-galactosidase catalytic activity, but plays functional roles in the formation of extracellular elastic fibers (elastogenesis) and in the development of connective tissue. Seems to be identical to the elastin-binding protein (EBP), a major component of the non-integrin cell surface receptor expressed on fibroblasts, smooth muscle cells, chondroblasts, leukocytes, and certain cancer cell types. In elastin producing cells, associates with tropoelastin intracellularly and functions as a recycling molecular chaperone which facilitates the secretions of tropoelastin and its assembly into elastic fibers.
Pfam Domain Function
Transmembrane RegionsNot Available
GenBank Protein IDNot Available
UniProtKB IDP16278
UniProtKB Entry NameBGAL_HUMAN
Cellular LocationLysosome
Gene sequence
>lcl|BSEQ0017743|Beta-galactosidase (GLB1)
ATGCCGGGGTTCCTGGTTCGCATCCTCCCTCTGTTGCTGGTTCTGCTGCTTCTGGGCCCT
ACGCGCGGCTTGCGCAATGCCACCCAGAGGATGTTTGAAATTGACTATAGCCGGGACTCC
TTCCTCAAGGATGGCCAGCCATTTCGCTACATCTCAGGAAGCATTCACTACTCCCGTGTG
CCCCGCTTCTACTGGAAGGACCGGCTGCTGAAGATGAAGATGGCTGGGCTGAACGCCATC
CAGACGTATGTGCCCTGGAACTTTCATGAGCCCTGGCCAGGACAGTACCAGTTTTCTGAG
GACCATGATGTGGAATATTTTCTTCGGCTGGCTCATGAGCTGGGACTGCTGGTTATCCTG
AGGCCCGGGCCCTACATCTGTGCAGAGTGGGAAATGGGAGGATTACCTGCTTGGCTGCTA
GAGAAAGAGTCTATTCTTCTCCGCTCCTCCGACCCAGATTACCTGGCAGCTGTGGACAAG
TGGTTGGGAGTCCTTCTGCCCAAGATGAAGCCTCTCCTCTATCAGAATGGAGGGCCAGTT
ATAACAGTGCAGGTTGAAAATGAATATGGCAGCTACTTTGCCTGTGATTTTGACTACCTG
CGCTTCCTGCAGAAGCGCTTTCGCCACCATCTGGGGGATGATGTGGTTCTGTTTACCACT
GATGGAGCACATAAAACATTCCTGAAATGTGGGGCCCTGCAGGGCCTCTACACCACGGTG
GACTTTGGAACAGGCAGCAACATCACAGATGCTTTCCTAAGCCAGAGGAAGTGTGAGCCC
AAAGGACCCTTGATCAATTCTGAATTCTATACTGGCTGGCTAGATCACTGGGGCCAACCT
CACTCCACAATCAAGACCGAAGCAGTGGCTTCCTCCCTCTATGATATACTTGCCCGTGGG
GCGAGTGTGAACTTGTACATGTTTATAGGTGGGACCAATTTTGCCTATTGGAATGGGGCC
AACTCACCCTATGCAGCACAGCCCACCAGCTACGACTATGATGCCCCACTGAGTGAGGCT
GGGGACCTCACTGAGAAGTATTTTGCTCTGCGAAACATCATCCAGAAGTTTGAAAAAGTA
CCAGAAGGTCCTATCCCTCCATCTACACCAAAGTTTGCATATGGAAAGGTCACTTTGGAA
AAGTTAAAGACAGTGGGAGCAGCTCTGGACATTCTGTGTCCCTCTGGGCCCATCAAAAGC
CTTTATCCCTTGACATTTATCCAGGTGAAACAGCATTATGGGTTTGTGCTGTACCGGACA
ACACTTCCTCAAGATTGCAGCAACCCAGCACCTCTCTCTTCACCCCTCAATGGAGTCCAC
GATCGAGCATATGTTGCTGTGGATGGGATCCCCCAGGGAGTCCTTGAGCGAAACAATGTG
ATCACTCTGAACATAACAGGGAAAGCTGGAGCCACTCTGGACCTTCTGGTAGAGAACATG
GGACGTGTGAACTATGGTGCATATATCAACGATTTTAAGGGTTTGGTTTCTAACCTGACT
CTCAGTTCCAATATCCTCACGGACTGGACGATCTTTCCACTGGACACTGAGGATGCAGTG
CGCAGCCACCTGGGGGGCTGGGGACACCGTGACAGTGGCCACCATGATGAAGCCTGGGCC
CACAACTCATCCAACTACACGCTCCCGGCCTTTTATATGGGGAACTTCTCCATTCCCAGT
GGGATCCCAGACTTGCCCCAGGACACCTTTATCCAGTTTCCTGGATGGACCAAGGGCCAG
GTCTGGATTAATGGCTTTAACCTTGGCCGCTATTGGCCAGCCCGGGGCCCTCAGTTGACC
TTGTTTGTGCCCCAGCACATCCTGATGACCTCGGCCCCAAACACCATCACCGTGCTGGAA
CTGGAGTGGGCACCCTGCAGCAGTGATGATCCAGAACTATGTGCTGTGACGTTCGTGGAC
AGGCCAGTTATTGGCTCATCTGTGACCTACGATCATCCCTCCAAACCTGTTGAAAAAAGA
CTCATGCCCCCACCCCCGCAAAAAAACAAAGATTCATGGCTGGACCATGTATGA
GenBank Gene IDNot Available
GeneCard IDNot Available
GenAtlas IDNot Available
HGNC IDHGNC:4298
Chromosome Location3
LocusNot Available
References
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