EC 6. Ligases
EC 6.1 Forming Carbon-Oxygen Bonds
EC 6.1.1 Ligases Forming Aminoacyl-tRNA and Related Compounds

EC 6.1.1.1 tyrosine—tRNA ligase
EC 6.1.1.2 tryptophan—tRNA ligase
EC 6.1.1.3 threonine—tRNA ligase
EC 6.1.1.4 leucine—tRNA ligase
EC 6.1.1.5 isoleucine—tRNA ligase
EC 6.1.1.6 lysine—tRNA ligase
EC 6.1.1.7 alanine—tRNA ligase
EC 6.1.1.8 deleted
EC 6.1.1.9 valine—tRNA ligase
EC 6.1.1.10 methionine—tRNA ligase
EC 6.1.1.11 serine—tRNA ligase
EC 6.1.1.12 aspartate—tRNA ligase
EC 6.1.1.13 D-alanine-poly(phosphoribitol) ligase
EC 6.1.1.14 glycine—tRNA ligase
EC 6.1.1.15 proline—tRNA ligase
EC 6.1.1.16 cysteine—tRNA ligase
EC 6.1.1.17 glutamate—tRNA ligase
EC 6.1.1.18 glutamine—tRNA ligase
EC 6.1.1.19 arginine—tRNA ligase
EC 6.1.1.20 phenylalanine—tRNA ligase
EC 6.1.1.21 histidine—tRNA ligase
EC 6.1.1.22 asparagine—tRNA ligase
EC 6.1.1.23 aspartate—tRNAAsn ligase
EC 6.1.1.24 glutamate—tRNAGln ligase
EC 6.1.1.25 lysine—tRNAPyl ligase
EC 6.1.1.26 pyrrolysine—tRNAPyl ligase
EC 6.1.1.27 O-phosphoserine—tRNA ligase

EC 6.1.2 Acid—Alcohol Ligases (ester synthases)

EC 6.1.2.1 D-alanine—(R)-lactate ligase

EC 6.2 Forming Carbon-Sulfur Bonds

EC 6.2.1 Acid-Thiol Ligases

EC 6.2.1.1 acetate—CoA ligase
EC 6.2.1.2 butyrate—CoA ligase
EC 6.2.1.3 long-chain-fatty-acid—CoA ligase
EC 6.2.1.4 succinate—CoA ligase (GDP-forming)
EC 6.2.1.5 succinate—CoA ligase (ADP-forming)
EC 6.2.1.6 glutarate—CoA ligase
EC 6.2.1.7 cholate—CoA ligase
EC 6.2.1.8 oxalate—CoA ligase
EC 6.2.1.9 malate—CoA ligase
EC 6.2.1.10 acid—CoA ligase (GDP-forming)
EC 6.2.1.11 biotin—CoA ligase
EC 6.2.1.12 4-coumarate—CoA ligase
EC 6.2.1.13 acetate—CoA ligase (ADP-forming)
EC 6.2.1.14 6-carboxyhexanoate—CoA ligase
EC 6.2.1.15 arachidonate—CoA ligase
EC 6.2.1.16 acetoacetate—CoA ligase
EC 6.2.1.17 propionate—CoA ligase
EC 6.2.1.18 citrate—CoA ligase
EC 6.2.1.19 long-chain-fatty-acid—luciferin-component ligase
EC 6.2.1.20 long-chain-fatty-acid—[acyl-carrier-protein] ligase
EC 6.2.1.21 covered by EC 6.2.1.30
EC 6.2.1.22 [citrate (pro-3S)-lyase] ligase
EC 6.2.1.23 dicarboxylate—CoA ligase
EC 6.2.1.24 phytanate—CoA ligase
EC 6.2.1.25 benzoate—CoA ligase
EC 6.2.1.26 o-succinylbenzoate—CoA ligase
EC 6.2.1.27 4-hydroxybenzoate—CoA ligase
EC 6.2.1.28 3α,7α-dihydroxy-5β-cholestanate—CoA ligase
EC 6.2.1.29 deleted now EC 6.2.1.7
EC 6.2.1.30 phenylacetate—CoA ligase
EC 6.2.1.31 2-furoate—CoA ligase
EC 6.2.1.32 anthranilate—CoA ligase
EC 6.2.1.33 4-chlorobenzoate—CoA ligase
EC 6.2.1.34 trans-feruloyl-CoA synthase
EC 6.2.1.35 ACP-SH:acetate ligase
EC 6.2.1.36 3-hydroxypropionyl-CoA synthase

EC 6.3 Forming Carbon-Nitrogen Bonds

EC 6.3.1 Acid-Ammonia (or Amine) Ligases (Amide Synthases)

EC 6.3.1.1 aspartate—ammonia ligase
EC 6.3.1.2 glutamate—ammonia ligase
EC 6.3.1.3 now EC 6.3.4.13
EC 6.3.1.4 aspartate—ammonia ligase (ADP-forming)
EC 6.3.1.5 NAD+ synthase
EC 6.3.1.6 glutamate—ethylamine ligase
EC 6.3.1.7 4-methyleneglutamate—ammonia ligase
EC 6.3.1.8 glutathionylspermidine synthase
EC 6.3.1.9 trypanothione synthase
EC 6.3.1.10 adenosylcobinamide-phosphate synthase
EC 6.3.1.11 glutamate—putrescine ligase
EC 6.3.1.12 D-aspartate ligase)
EC 6.3.1.13 L-cysteine:1D-myo-inositol 2-amino-2-deoxy-α-D-glucopyranoside ligase
EC 6.3.1.14 diphthine—ammonia ligase

EC 6.3.2 Acid—Amino-Acid Ligases (Peptide Synthases)

EC 6.3.2.1 pantoate—β-alanine ligase
EC 6.3.2.2 glutamate—cysteine ligase
EC 6.3.2.3 glutathione synthase
EC 6.3.2.4 D-alanine—D-alanine ligase
EC 6.3.2.5 phosphopantothenate—cysteine ligase
EC 6.3.2.6 phosphoribosylaminoimidazolesuccinocarboxamide synthase
EC 6.3.2.7 UDP-N-acetylmuramoyl-L-alanyl-D-glutamate—L-lysine ligase
EC 6.3.2.8 UDP-N-acetylmuramate—L-alanine ligase
EC 6.3.2.9 UDP-N-acetylmuramoylalanine—D-glutamate ligase
EC 6.3.2.10 UDP-N-acetylmuramoylalanyl-tripeptide—D-alanyl-D-alanine ligase
EC 6.3.2.11 carnosine synthase
EC 6.3.2.12 dihydrofolate synthase
EC 6.3.2.13 UDP-N-acetylmuramoyl-L-alanyl-D-glutamate—2,6-diaminopimelate ligase
EC 6.3.2.14 2,3-dihydroxybenzoate—serine ligase
EC 6.3.2.15 deleted, due to EC 6.3.2.10
EC 6.3.2.16 D-alanine—alanyl-poly(glycerolphosphate) ligase
EC 6.3.2.17 tetrahydrofolate synthase
EC 6.3.2.18 γ-glutamylhistamine synthase
EC 6.3.2.19 .................More Read....