ENTRY       hsa00533                    Pathway
NAME        Glycosaminoglycan biosynthesis - keratan sulfate - Homo sapiens (human)
DESCRIPTION Keratan sulfate (KS) is a glycosaminoglycan with the basic disaccharide unit of N-acetyllactosamine, Gal(b1-4)GlcNAc(b1-3), with sulfate esters at C-6 of GlcNAc and Gal residues. There are two types of KS distinguished by the protein linkage: type I for N-linked via the N-glycan core structure and type II for O-linked via the O-glycan core 2 structure.
CLASS       Metabolism; Glycan biosynthesis and metabolism
PATHWAY_MAP hsa00533  Glycosaminoglycan biosynthesis - keratan sulfate
DBLINKS     GO: 0018146
ORGANISM    Homo sapiens (human) [GN:hsa]
GENE        2530  FUT8; fucosyltransferase 8 [KO:K00717] [EC:2.4.1.68]
            2683  B4GALT1; beta-1,4-galactosyltransferase 1 [KO:K07966] [EC:2.4.1.22 2.4.1.90 2.4.1.38 2.4.1.-]
            8704  B4GALT2; beta-1,4-galactosyltransferase 2 [KO:K07967] [EC:2.4.1.22 2.4.1.90 2.4.1.38 2.4.1.-]
            8703  B4GALT3; beta-1,4-galactosyltransferase 3 [KO:K07968] [EC:2.4.1.90 2.4.1.38 2.4.1.-]
            10678  B3GNT2; UDP-GlcNAc:betaGal beta-1,3-N-acetylglucosaminyltransferase 2 [KO:K00741] [EC:2.4.1.149]
            4166  CHST6; carbohydrate sulfotransferase 6 [KO:K09671] [EC:2.8.2.-]
            8702  B4GALT4; beta-1,4-galactosyltransferase 4 [KO:K07969] [EC:2.4.1.90 2.4.1.275 2.4.1.-]
            93010  B3GNT7; UDP-GlcNAc:betaGal beta-1,3-N-acetylglucosaminyltransferase 7 [KO:K09664] [EC:2.4.1.-]
            8534  CHST1; carbohydrate sulfotransferase 1 [KO:K01022] [EC:2.8.2.21]
            6487  ST3GAL3; ST3 beta-galactoside alpha-2,3-sialyltransferase 3 [KO:K00781] [EC:2.4.3.6]
            9435  CHST2; carbohydrate sulfotransferase 2 [KO:K04745] [EC:2.8.2.-]
            10164  CHST4; carbohydrate sulfotransferase 4 [KO:K04746] [EC:2.8.2.-]
            6482  ST3GAL1; ST3 beta-galactoside alpha-2,3-sialyltransferase 1 [KO:K00780] [EC:2.4.3.2 2.4.3.4]
            6483  ST3GAL2; ST3 beta-galactoside alpha-2,3-sialyltransferase 2 [KO:K03368] [EC:2.4.3.2 2.4.3.4]
REFERENCE   PMID:11030741
  AUTHORS   Funderburgh JL.
  TITLE     Keratan sulfate: structure, biosynthesis, and function.
  JOURNAL   Glycobiology 10:951-958 (2000)
            DOI:10.1093/glycob/10.10.951
REFERENCE   PMID:14706853
  AUTHORS   Seko A, Yamashita K.
  TITLE     beta1,3-N-Acetylglucosaminyltransferase-7 (beta3Gn-T7) acts efficiently on keratan sulfate-related glycans.
  JOURNAL   FEBS Lett 556:216-20 (2004)
            DOI:10.1016/S0014-5793(03)01440-6
REFERENCE   PMID:12511560
  AUTHORS   Seko A, Dohmae N, Takio K, Yamashita K.
  TITLE     Beta 1,4-galactosyltransferase (beta 4GalT)-IV is specific for GlcNAc 6-O-sulfate. Beta 4GalT-IV acts on keratan sulfate-related glycans and a precursor glycan of 6-sulfosialyl-Lewis X.
  JOURNAL   J Biol Chem 278:9150-8 (2003)
            DOI:10.1074/jbc.M211480200
REL_PATHWAY hsa00510  N-Glycan biosynthesis
            hsa00512  Mucin type O-glycan biosynthesis
KO_PATHWAY  ko00533
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