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HS3ST5

Gene
HS3ST5
Protein
Heparan sulfate glucosamine 3-O-sulfotransferase 5
Organism
Homo sapiens
Length
346 amino acids
Function
Sulfotransferase that utilizes 3'-phospho-5'-adenylyl sulfate (PAPS) to catalyze the transfer of a sulfo group to position 3 of glucosamine residues in heparan. Catalyzes the rate limiting step in the biosynthesis of heparan sulfate (HSact). This modification is a crucial step in the biosynthesis of anticoagulant heparan sulfate as it completes the structure of the antithrombin pentasaccharide binding site. Also generates GlcUA-GlcNS or IdoUA-GlcNS and IdoUA2S-GlcNH2. The substrate-specific O-sulfation generates an enzyme-modified heparan sulfate which acts as a binding receptor to Herpes simplex virus-1 (HSV-1) and permits its entry.
Similarity
Belongs to the sulfotransferase 1 family.
Mass
40.408 kDa
Sequence
MLFKQQAWLRQKLLVLGSLAVGSLLYLVARVGSLDRLQPICPIEGRLGGARTQAEFPLRALQFKRGLLHEFRKGNASKEQVRLHDLVQQLPKAIIIGVRKGGTRALLEMLNLHPAVVKASQEIHFFDNDENYGKGIEWYRKKMPFSYPQQITIEKSPAYFITEEVPERIYKMNSSIKLLIIVREPTTRAISDYTQVLEGKERKNKTYYKFEKLAIDPNTCEVNTKYKAVRTSIYTKHLERWLKYFPIEQFHVVDGDRLITEPLPELQLVEKFLNLPPRISQYNLYFNATRGFYCLRFNIIFNKCLAGSKGRIHPEVDPSVITKLRKFFHPFNQKFYQITGRTLNWP

Gene
Hs3st5
Protein
Heparan sulfate glucosamine 3-O-sulfotransferase 5
Organism
Mus musculus
Length
346 amino acids
Function
Sulfotransferase that utilizes 3'-phospho-5'-adenylyl sulfate (PAPS) to catalyze the transfer of a sulfo group to position 3 of glucosamine residues in heparan. Catalyzes the rate limiting step in the biosynthesis of heparan sulfate (HSact). This modification is a crucial step in the biosynthesis of anticoagulant heparan sulfate as it completes the structure of the antithrombin pentasaccharide binding site. Also generates GlcUA-GlcNS or IdoUA-GlcNS and IdoUA2S-GlcNH2 (By similarity).
Similarity
Belongs to the sulfotransferase 1 family.
Mass
40.471 kDa
Sequence
MLFKQQVWLRQKLLVLGSLAVGSLLYLVARVGSLDRLQPICPVESRFGGAHNQAELPLRALQFKRGLLHEFRKGNSSKEQVHLHDLVQQLPKAIIIGVRKGGTRALLEMLNLHPAVVKASQEIHFFDNDENYAKGIEWYRKKMPFSYPQQITIEKSPAYFITEEVPERIYKMNSSIKLLIIVREPTTRAISDYTQVLEGKERKNKTYYKFEKLAIDPNTCEVNTKYKAVRTSIYTKHLERWLKYFPIEQFHIVDGDRLITEPLPELQLVEKFLNLPPRISQYNLYFNATRGFYCLRFNIIFNKCLAGSKGRIHPEVDPSVITKLRKFFHPFNQKFYQITGRTLNWP