GGDB:

CSGALNACT2はchondroitin sulfate N-acetylgalactosaminyltransferase 2をコードする。コンドロイチン硫酸の糖鎖骨格の生合成には、2種類のGalNAc転移酵素が存在する。1つはGAG-タンパク質リンケージ部分の4糖のGlcA末端にGalNAcを転移するGalNAcT-I活性を有するもの、もう一つは(GlcAβ1,3GalNAcβ1,4)nからなる2糖繰返し構造のGlcA末端にGalNAcを転移するGalNAcT-II活性を有するものである。CSGalNAcT1とCSGalNAcT2はそれらの2種類のGalNAcT活性をin vitroで有しているが、in vivoではコンドロイチン硫酸生合成の開始反応であるGalNAcT-I活性を担うと考えられている。

Keyword: GalNAc転移酵素 , コンドロイチン , コンドロイチン硫酸 , プロテオグリカン

N-Acetylgalactosaminyltransferase

GGDB Symbol

CSGALNACT2 Alias

Designation

chondroitin sulfate N-acetylgalactosaminyltransferase 2, glucuronosyl-N-acetylgalactosaminyl-proteoglycan 4-beta-N-acetylgalactosaminyltransferase

Organism

Homo sapiens

GeneID

55454

HGNC

CSGALNACT2 (24292)

mRNA

NM_018590

map

10q11.21

Protein

NP_061060

EC#

2.4.1.175

CAZy

GT31

GlyCosmos Glycogenes

CSGALNACT2

OMIM

616616

Disease name

GDGDB

Human Protein Atlas

ENSG00000169826

Mus musculus

mRNA	NM_030165
Protein	NP_084441

Rattus norvegicus

mRNA	XM_232316
Protein	XP_232316

J. Biol. Chem. 2003-01-01 ;278(5):3072-8.

Molecular cloning and expression of a second chondroitin N-acetylgalactosaminyltransferase involved in the initiation and elongation of chondroitin/dermatan sulfate.

Uyama T. et al. PMID:12433924

J. Biol. Chem. 2003-01-01 ;278(5):3063-71.

Differential roles of two N-acetylgalactosaminyltransferases, CSGalNAcT-1, and a novel enzyme, CSGalNAcT-2. Initiation and elongation in synthesis of chondroitin sulfate.

Sato T. et al. PMID:12446672 Refer to: TABLE I

DONOR : UDP-GalNAc

Glc	Man	Gal	GlcNAc	GalNAc	Fuc	Xyl	Neu5Ac	Neu5Gc	GlcA	IdoA	GlcN

Substrate Transferred

	JCGG-STR032563	UDP-GalNAc	JCGG-STR032619

	JCGG-STR032623 GlyTouCan: G19059PI GlyCosmos Glycans: G19059PI	UDP-GalNAc	JCGG-STR032534

	GAG_CS14	UDP-GalNAc	CS15

	JCGG-STR032607 GlyTouCan: G34103VG GlyCosmos Glycans: G34103VG	UDP-GalNAc	JCGG-STR032607 GlyTouCan: G34103VG GlyCosmos Glycans: G34103VG

	JCGG-STR027487 GlyTouCan: G14371GV GlyCosmos Glycans: G14371GV	UDP-GalNAc	JCGG-STR017750 GlyTouCan: G40609EP GlyCosmos Glycans: G40609EP

	JCGG-STR032617	UDP-GalNAc	CSGlcAT_CS13

	JCGG-STR032615	UDP-GalNAc	JCGG-STR032616

	JCGG-STR032624 GlyTouCan: G46732TY GlyCosmos Glycans: G46732TY	UDP-GalNAc	JCGG-STR032611

	JCGG-STR032621 GlyTouCan: G33235EO GlyCosmos Glycans: G33235EO	UDP-GalNAc	CSGlcAT_CH13

	GAG_CS8	UDP-GalNAc	CSGlcAT_CS9

	JCGG-STR032561 GlyTouCan: G34992DF GlyCosmos Glycans: G34992DF	UDP-GalNAc	JCGG-STR032612

	GAG_CH14	UDP-GalNAc	CH15

	JCGG-STR032569 GlyTouCan: G76533UX GlyCosmos Glycans: G76533UX	UDP-GalNAc	JCGG-STR032570 GlyTouCan: G70907ST GlyCosmos Glycans: G70907ST

	JCGG-STR032567 GlyTouCan: G40723NG GlyCosmos Glycans: G40723NG	UDP-GalNAc	JCGG-STR032568 GlyTouCan: G97081WO GlyCosmos Glycans: G97081WO

	JCGG-STR032565 GlyTouCan: G48258CR GlyCosmos Glycans: G48258CR	UDP-GalNAc	JCGG-STR032566 GlyTouCan: G07747BZ GlyCosmos Glycans: G07747BZ

	GAG_CS6	UDP-GalNAc	CSGlcAT_CS7

RNA Expression from Human Protein Atlas

This RNA expression data uses "HPA data" from the Human Protein Atlas. Tissue RNA Expression

data available from v22.proteinatlas.org

J. Biol. Chem. 2003-01-01 ;278(5):3072-8.

Molecular cloning and expression of a second chondroitin N-acetylgalactosaminyltransferase involved in the initiation and elongation of chondroitin/dermatan sulfate.

Uyama T. et al. PMID:12433924

J. Biol. Chem. 2003-01-01 ;278(5):3063-71.

Differential roles of two N-acetylgalactosaminyltransferases, CSGalNAcT-1, and a novel enzyme, CSGalNAcT-2. Initiation and elongation in synthesis of chondroitin sulfate.

Sato T. et al. PMID:12446672

adrenal glandsbone marrowcerebellumcerebral cortexcolonheartkidneyliverlungmammary glandovarypancreasperipheral blood leukocyteperipheral blood mononuclear cellplacentasmall intestinespleenstomachtestisthymusthyroid glanduteruswhole brain

CSGALNACT2

N-Acetylgalactosaminyltransferase

Orthologous Gene

Mus musculus

Rattus norvegicus

Acceptor Substrates (Reference)

Molecular cloning and expression of a second chondroitin N-acetylgalactosaminyltransferase involved in the initiation and elongation of chondroitin/dermatan sulfate.

Differential roles of two N-acetylgalactosaminyltransferases, CSGalNAcT-1, and a novel enzyme, CSGalNAcT-2. Initiation and elongation in synthesis of chondroitin sulfate.

DONOR : UDP-GalNAc

Substrate Transferred

Acceptor Substrates (KEM-C)

Expression

Expression (Reference)

Molecular cloning and expression of a second chondroitin N-acetylgalactosaminyltransferase involved in the initiation and elongation of chondroitin/dermatan sulfate.

Differential roles of two N-acetylgalactosaminyltransferases, CSGalNAcT-1, and a novel enzyme, CSGalNAcT-2. Initiation and elongation in synthesis of chondroitin sulfate.

Gene Ontology