Category:LBS: Difference between revisions

Revision as of 00:45, 24 October 2011

Sphingolipid

Class Overview

Sphingosine & Ceramide

Sphingosine is synthesized from decarboxylating condensation of palmitoyl CoA with serine. It is a 18-carbon amino alcohol (16 carbons from palmitic acid and 2 from serine) with one unsaturated bond (2-amino-4-octadecene-1,3-diol). Sphingosine is further acylated to form ceramide, an important component of cell membranes.
The Sphingolipid category (LBS) in this database includes glycosphingolipid, phosphosphingolipid, and ceramide.

スフィンゴシンはパルミトイルCoAがアミノ酸セリンと脱炭酸縮合して生成します。炭素を18個含むアミノアルコール(16個がパルミチン酸、2個がセリン由来)で不飽和結合を1つ含んでいます (2-amino-4-octadecene-1,3-diol)。スフィンゴシンがアシル化したものが、細胞膜の重要な成分であるセラミドです。
このデータベースにおけるスフィンゴ脂質カテゴリー (LBS) には、スフィンゴ糖脂質 (glycosphingolipid)、スフィンゴリン脂質 (phosphosphingolipid) 、セラミド (ceramide) が含まれています。

Abbreviations

Sugar Abbreviations (Ex. Glc → glucose)
Cer	ceramides	セラミド
Sph	sphingosine	スフィンゴシン
Glc	glucose	グルコース
Gal	galactose	ガラクトース
GlcNAc	N-acetyl-glucosamine	N-アセチルグルコサミン
GalNAc	N-acetyl-galactosamine	N-アセチルガラクトサミン
GlcN	glucosamine	グルコサミン
GalN	galactosamine	ガラクトサミン
GlcA	glucuronic acid	グルクロン酸
GalN	galacturonic acid	ガラクツロン酸
Man	mannose	マンノース
Rha	rhamnose (= 6-deoxy-mannose)	ラムノース (6-デオキシマンノース)
Ins	inositol	イノシトール
Fuc	fucose (= 6-deoxy-galactose)	フコース (6-デオキシガラクトース)
Ara	arabinose	アラビノース
Xyl	xylose	キシロース
NeuAc	N-acetyl-neuraminic acid	N-アセチルノイラミン酸
NeuGc	N-glycolyl-neuraminic acid	N-グリコリルノイラミン酸
NeuNH	(deacetyl) neuraminic acid (pyruvate + mannosamine)	ノイラミン酸 (ピルビン酸＋マンノサミン)
KDN	2-keto-3-deoxy-D-glycero- D-galacto-nononic acid	KDN
Modifiers
AEPn	(2-Aminoethyl-)hydroxyphosphoryl
MAEPn	(N-Methyl-2-aminoethyl-)hydroxyphosphoryl
EtnP	2-Aminoethanolphospho
MAEPr	(N-Methyl-2-aminoethyl-)phosphoryl
HPO3	Phosphono
HSO3	Sulfono
2C=CH	Ethyl
PC	Phosphocholine

Page/ID Design for Sphingolipid

L

B

S

s1

s2

s3

n1

n2

y

c

c1

c2

s1 ∼ s3 ... Structure code (3 digits)

Explained below

n1, n2 ... the number of sugars (2 digits)
y ... the number of sialic acids ( 1 digit)
c ... ceramide identification (1 digit)
c1, c2 ... serial numbers

s1 ∼ s3 ... 構造コード (3桁）

下に詳述

n1, n2 ... 糖の数 (2桁)
y ... シアル酸の数 (1桁)
c ... セラミドの同定 (1桁)
c1, c2 ... 通し番号

Structure Code

NOTE

Most common patterns

GalNAc_β1-4Gal_β1-4-Glc_β1-Cer:Ganglio series ... over 110 molecules
GlcNAc_β1-3Gal_β1-4-Glc_β1-Cer:Lacto or Neolacto series ... over 170 molecules
Neuraminic acid + Gal_β1-4-Glc_β1-Cer:??... over 50 molecules
GlcNAc_β1-3Man_β1-4Glc_β1-1Cer:Arthro series ... over 50 molecules

Digits

"I" and "O" are not used to avoid confusion with "1" or "0".

code	sugar	code	sugar	code	sugar
0	no sugar	A	other Galactose (Gal) including methylation	L	Rhamnose (Rha) or pentose sugars (Ara, Xyl)
1	Gal_α1-3	B	Other N-acetyl galactosamine (GalNAc) or glucosamine (GlcNAc)	M	Mannose (Man)
2	Gal_α1-4	C	Galactosamine (GalN) or Glucosamine (GlcN)	N	Neuraminic acids (NeuAc, NeuGc, NeuNH, KDN)
3	Gal_α1-6	D	GlcNAc_β1-3	P	phosphocholine (PC), phosphate (HPO3), sulphate (HSO3), and ethylene (2C=CH)
4	Gal_β1-3	E	GlcNAc_β1-4	Q	Aminoethylphosphate (AEPn, MAEPr, EtnP)
5	Gal_β1-4	F	GlcNAc_β1-6
6	Gal_β1-6	G	Other Glucose (Glc)
7	GalNAc_β1-3	H	Glucuronic acid (GlcA)
8	GalNAc_β1-4	J	Inositol (Ins)	Y	GlcNAc_β1-3Man_β1-4Glc_β1-1Cer
9	GalNAc_β1-6	K	Fucose (Fuc)	Z	Gal_β1-4Glc_β1-1bCer

Polysaccharide Chain

Table 1. Common Categories
Common Name	Sequence	LipidBank ID
By GalCer Synthase (EC 2.4.1.62)
Gala	0	Gal_α1-4Gal_β1-Cer
Spirometo	0	Gal_β1-4Glc_β1-3Gal_β1-Cer
By GlcCer Synthase (EC 2.4.1.80)
Ganglio	0	GalNAc_β1-4Gal_β1-4Glc_β1-Cer
Isoganglio	0	GalNAc_β1-3Gal_β1-4Glc_β1-Cer
Globo	0	Gal_α1-4Gal_β1-4Glc_β1-Cer
Isoglobo	0	Gal_α1-3Gal_β1-4Glc_β1-Cer
Lacto	0	Gal_β1-3GlcNAc_β1-3Gal_β1-4Glc_β1-Cer
NeoLacto	0	Gal_β1-4GlcNAc_β1-3Gal_β1-4Glc_β1-Cer
Muco	0	Gal_β1-4Gal_β1-4Glc_β1-Cer
With Mannose
Arthro	0	GlcNAc_β1-3Man_β1-4Glc_β1-Cer
Mollu	0	Man_α1-3Man_β1-4Glc_β1-Cer

Classification

By the Number of Sugars 糖の個数

For glycosphingolipid, 2 digits following LBS stand for the number of attached sugars. For phosphosphingolipid, the code of phosphorylation, PP.

スフィンゴ糖脂質は結合している糖の総数をLBSに続く2桁の数字で、スフィンゴリン脂質は数字の代わりにリン酸化修飾を示す記号PPで分類しています。

Sphingolipid Overview
Glycosphingolipid スフィンゴ糖脂質: LBSnn	Phosphosphingolipid スフィンゴリン脂質: LBSPP

Table 1. Classification by the Number of Sugars
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Subcategories

This category has the following 4 subcategories, out of 4 total.

@@ Line 95: / Line 95: @@
 ====NOTE====
 : Most common patterns
-* {{LBS/FormatSugar|GalNAcb1-4Galb1-4-Glcb1-Cer}}Ganglio series ... over 110 molecules
+* {{LBS/FormatSugar|GalNAcb1-4Galb1-4-Glcb1-Cer}}:Ganglio series ... over 110 molecules
-* {{LBS/FormatSugar|GlcNAcb1-3Galb1-4-Glcb1-Cer}}Lacto or Neolacto series ... over 170 molecules
+* {{LBS/FormatSugar|GlcNAcb1-3Galb1-4-Glcb1-Cer}}:Lacto or Neolacto series ... over 170 molecules
-* Neuraminic acid + {{LBS/FormatSugar|Galb1-4-Glcb1-Cer}}... over 50 molecules
+* Neuraminic acid + {{LBS/FormatSugar|Galb1-4-Glcb1-Cer}}:??... over 50 molecules
-* {{LBS/FormatSugar|GlcNAcb1-3Manb1-4Glcb1-1Cer}}Arthro series ... over 50 molecules
+* {{LBS/FormatSugar|GlcNAcb1-3Manb1-4Glcb1-1Cer}}:Arthro series ... over 50 molecules
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