Category:LBS: Difference between revisions

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!colspan="4" align="center" style="background:lightgray"| Sugar Abbreviations (e.g. Glc = glucose)
!colspan="4" align="center" style="background:lightgray"| Sugar Abbreviations (e.g. Glc = glucose)
{{#repeatnum:LBS/AbbrevRow|1|
{{#repeatnum:LBS/AbbrevRow|1|
Cer && ceramides && セラミド
Cer && ceramide && セラミド
Sph && sphingosine && スフィンゴシン
Sph && sphingosine && スフィンゴシン
Glc && glucose && グルコース
Glc && glucose && グルコース

Revision as of 06:49, 29 February 2012

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。

Common Abbreviations

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

code Galactose
0 no sugar
1 Galactose
(α form)
Galα1-3 ...
2 Galα1-4 ...
3 Galα1-6 ...
4 Galactose
(β form)
Galβ1-3 ...
5 Galβ1-4 ...
6 Galβ1-6 ...
code N-Acetylated Sugars
7 N-Acetyl Galactosamine
(β form)
GalNAcβ1-3 ...
8 GalNAcβ1-4 ...
9 GalNAcβ1-6 ...
A N-Acetyl Glucosamine
(β form)
GlcNAcβ1-3 ...
B GlcNAcβ1-4 ...
C GlcNAcβ1-6 ...


code Galactose & Glucose
D Aminated Sugars
(Except for Code 7∼C)
GalNAc, GalN
E GlcNAc, GlcN
F Galactose
(Except Code 1∼6)
Gal
G Glucose Glc
code Other Sugars
J Inositol (Ins)
K Fucose (Fuc)
L Pentose sugars
(Ara, Xyl)
M Mannose and Rhamnose (= 6-deoxymannose)
(Man, Rha)
N Neuraminic acids
(NeuAc, NeuNH, NeuGc, KDN)
code Modifiers
P Phosphate (HPO3), Sulphate (HSO3),
and Phosphocholine (PC)
Q Aminoethylphosphates
AEPn, MAEPr, EtnP
R O-Alkyl and O-acyl groups
OAc, CH3, 2C=CH
code Abbreviations
Y GlcNAcβ1-3Manβ1-4Glcβ1-1Cer
Z Galβ1-4Glcβ1-1bCer


NOTE

Most common patterns
  • GalNAcβ1-4Galβ1-4-Glcβ1-Cer:Ganglio series ... over 110 molecules
  • GlcNAcβ1-3Galβ1-4-Glcβ1-Cer:Lacto or Neolacto series ... over 170 molecules
  • Neuraminic acid + Galβ1-4-Glcβ1-Cer:??... over 50 molecules
  • GlcNAcβ1-3Manβ1-4Glcβ1-1Cer:Arthro series ... over 50 molecules
Digits

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

Polysaccharide Chain

Table 1. Common Categories
Common Name Sequence LipidBank ID
By GalCer Synthase (EC 2.4.1.62)
Gala 0 Galα1-4Galβ1-Cer
Spirometo 0 Galβ1-4Glcβ1-3Galβ1-Cer
By GlcCer Synthase (EC 2.4.1.80)
Ganglio 0 GalNAcβ1-4Galβ1-4Glcβ1-Cer
Isoganglio 0 GalNAcβ1-3Galβ1-4Glcβ1-Cer
Globo 0 Galα1-4Galβ1-4Glcβ1-Cer
Isoglobo 0 Galα1-3Galβ1-4Glcβ1-Cer
Lacto 0 Galβ1-3GlcNAcβ1-3Galβ1-4Glcβ1-Cer
NeoLacto 0 Galβ1-4GlcNAcβ1-3Galβ1-4Glcβ1-Cer
Muco 0 Galβ1-4Galβ1-4Glcβ1-Cer
With Mannose
Arthro 0 GlcNAcβ1-3Manβ1-4Glcβ1-Cer
Mollu 0 Manα1-3Manβ1-4Glcβ1-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
LBSnn.png

Phosphosphingolipid
スフィンゴリン脂質: LBSPP
LBSPP.png

Table 1. Classification by the Number of Sugars
 
(41 pages)
 
(49 pages)
 
(95 pages)
 
(111 pages)
 
(124 pages)
 
(102 pages)
 
(84 pages)
 
(57 pages)
 
(35 pages)
 
(18 pages)
 
(10 pages)
 
(10 pages)
 
(0 pages)
 
(5 pages)
 
(4 pages)
 
(1 pages)
 
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(1 pages)
 
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(3 pages)
 
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(1 pages)
 
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Subcategories

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