Table 1

Activated metabolic pathways during adipocyte differentiation and their key enzymes (rate limiting steps)

Pathway
Enzyme/Protein name
Accession number
Number
Cluster

Urea cycle and arginine-citrulline cycles
Arginine succinate synthase
NP_031520
128
1/10
Phosphatidylinositol
Phosphatidylinositol 3-kinase, regulatory subunit, polypeptide 1
XP_127550
446
7

Myoinositol 1-phosphate synthase A1
NP_076116
156
8
Cholesterol biosynthesis/keto-body synthesis
3-hydroxy-3-methylglutaryl-CoA synthase 1
NP_666054
178
4

3-hydroxy-3-methylglutaryl-CoA reductase
XP_127496
619
12
Triglyceride hydrolysis (fatty acid assimilation)
Lipoprotein lipase (LPL)
NP_032535
14
6
β-Oxidation
Acetyl-CoA dehydrogenase (Acad)
NP_780533
61
6

Acetyl-CoA dehydrogenase, medium chain (Acadm)
NP_031408
153
6/9

Isovaleryl-CoA dehydrogenase (Acad)
Mm.6635
510
6

Acyl-CoA dehydrogenase, short/branched chain (Acadsb)
NP_080102
220
9
Triglyceride metabolism
Adipose triglyceride lipase (Pnpla2/Atgl)
NP_080078
157
6
CoA biosynthesis
Pantothenate kinase 3
NP_666074
140
6
Anaplerotic processes
Pyruvate carboxylase
NP_032823
149
6
Branched chain amino acid metabolism (AKA metabolism)
Branched chain ketoacid dehydrogenase E1, α polypeptide
NP_031559
193
3/9
Methylation
S-adenosylhomocysteine hydrolase
NP_057870
66
8

Methionine adenosyltransferase II, α
NP_663544
350
2
Unsaturated fatty acid biosynthesis
Stearoyl-CoA desaturase 1
NP_033153
305
6
Nucleotide metabolism
Xanthine dehydrogenase
NP_035853
361
2
Taurin biosynthesis
Cysteine dioxygenase
NP_149026
271
7
NH4+ metabolism/glutamate
Glutamate-ammonia ligase (glutamine synthase)
NP_032157
318
7
Glycolysis
Pyruvate kinase 3
NP_035229
247
8
Substrate cycle (glycolysis/gluconeogenesis)
Fructose bisphosphatase 2
NP_032020
175
9
Nucleotide biosynthesis
Deoxycytidine kinase
NP_031858
363
8

Ribonucleotide reductase M2
NP_033130
448
8
Pentose phophate shunt
Hexose-6-phosphate dehydrogenase (AI785303)
XP_181411
533
9
NAD(P) biosynthesis
Pre-B-cell colony-enhancing factor
NP_067499
327
9
Polyamine biosynthesis
Ornithine decarboxylase, structural
NP_038642
212
10
Tetrahydrobiopterin biosynthesis
GTP cyclohydrolase 1
NP_032128
259
10
Purin biosynthesis
Phosphoribosyl pyrophosphate amidotransferase
NP_742158
287
11
Asparagine biosynthesis
Asparagine synthetase
NP_036185
109
12
Long chain fatty acids
ELOVL family member 6, elongation of long chain fatty acids
NP_569717
162
12
Serine biosynthesis
Phosphoserine phosphatase
NP_598661
261
12
Gluconeogenesis
PEPCK 2 (Riken 9130022B02)
NP_083270
393
12
Prostaglandin E biosynthesis
Prostaglandin E synthase (ri|2410099E23; ri|9230102G02)
ri|2410099E23
ri|9230102G02
539
540
9

CoA, coenzyme A.

Hackl et al. Genome Biology 2005 6:R108   doi:10.1186/gb-2005-6-13-r108