DNA ligase
From Proteopedia
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[[Image:2hix.png|left|200px|thumb|Crystal Structure of DNA ligase [[2hix]]]] | [[Image:2hix.png|left|200px|thumb|Crystal Structure of DNA ligase [[2hix]]]] | ||
| - | {{STRUCTURE_2hix| PDB=2hix | SIZE=300| | + | {{STRUCTURE_2hix| PDB=2hix | SIZE=300| SCENE=DNA_ligase/Cv/1 |right|CAPTION=ATP-dependent DNA ligase [[2hix]] }} |
'''DNA ligase''' (LigD) is an enzyme which repairs single-stranded breaks in a double-stranded DNA. LigD is activated , in a species-dependent manner, by hydrolysis of ATP or NAD+. Mamlian LigD I ligates the nascent DNA of the lagging strand; LigD III complexes with XRCC1 in the process of nucleotide excision repair; LigD IV complexes with XRCC4 and catalyzes the last step in the non-homologous DNA end joining. | '''DNA ligase''' (LigD) is an enzyme which repairs single-stranded breaks in a double-stranded DNA. LigD is activated , in a species-dependent manner, by hydrolysis of ATP or NAD+. Mamlian LigD I ligates the nascent DNA of the lagging strand; LigD III complexes with XRCC1 in the process of nucleotide excision repair; LigD IV complexes with XRCC4 and catalyzes the last step in the non-homologous DNA end joining. | ||
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[[1l7b]] – LigD BRCT domain – ''Thermus thermophilus'' - NMR | [[1l7b]] – LigD BRCT domain – ''Thermus thermophilus'' - NMR | ||
| - | === | + | ===Mammalian LigD I=== |
[[1x9n]] – hLigD I + DNA + AMP + CMP – human | [[1x9n]] – hLigD I + DNA + AMP + CMP – human | ||
| - | === | + | ===Mammalian LigD III=== |
[[3l2p]] – hLigD III residues 257-833 + DNA<br /> | [[3l2p]] – hLigD III residues 257-833 + DNA<br /> | ||
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[[1imo]], [[ 1in1]] - hLigD III BRCTdomain – NMR | [[1imo]], [[ 1in1]] - hLigD III BRCTdomain – NMR | ||
| - | === | + | ===Mammalian LigD VI=== |
[[3ii6]], [[ 1ik9]] – hLigD IV C-terminal BRCT domains + DNA repair protein XRCC4<br /> | [[3ii6]], [[ 1ik9]] – hLigD IV C-terminal BRCT domains + DNA repair protein XRCC4<br /> | ||
Revision as of 07:18, 17 April 2011
DNA ligase (LigD) is an enzyme which repairs single-stranded breaks in a double-stranded DNA. LigD is activated , in a species-dependent manner, by hydrolysis of ATP or NAD+. Mamlian LigD I ligates the nascent DNA of the lagging strand; LigD III complexes with XRCC1 in the process of nucleotide excision repair; LigD IV complexes with XRCC4 and catalyzes the last step in the non-homologous DNA end joining.
Contents |
3D Structures of DNA ligase
ATP-dependent LigD
3p4h – LigD N-terminal – Candidatus korarchaeum cryptofilum
3gde – LigD – Archaeoglobus fulgidus
2hiv – SsLigD – Sulfolobus solfataricus
2hix - SsLigD + ATP
2cfm - LigD + AMP – Pyrococcus furiosus
2fao - PaLigD polymerase domain – Pseudomonas aeruginosa
2faq, 2far - PaLigD polymerase domain + ATP + Mn
1a0i – LigD + ATP – Bacteriophage T7
NAD+-dependent LigD
3jsl, 3jsn - LigD adenylation domain – Staphylococcus aureus
3ba8, 3ba9, 3baa, 3bab, 3bac - EfLigD adenylation domain + inhibitor – Enterococcus faecalis
1ta8, 1tae - EfLigD adenylation domain
1zau - LigD adenylation domain – Mycobacterium tuberculosis
1v9p, 1dgs – LigD – Thermus filiformis
1b04 – LigD adenylation domain (mutant) – Geobacillus stearothermophilus
LigD
2q2t – CvLigD + DNA + AMP + CMP – Chlorella virus
2q2u, 1p8l, 1fvi - CvLigD + DNA + mononucleotide
2owo – LigD + DNA + AMP + CMP – Escherichia coli
3qwu – LigD – Aquifex aeolicus
3pn1 – LigD adenylation domain + inhibitor – Haemophilus influenzae
1l7b – LigD BRCT domain – Thermus thermophilus - NMR
Mammalian LigD I
1x9n – hLigD I + DNA + AMP + CMP – human
Mammalian LigD III
3l2p – hLigD III residues 257-833 + DNA
1uw0 - hLigD III zinc-finger domain residues 1-117 – NMR
1imo, 1in1 - hLigD III BRCTdomain – NMR
Mammalian LigD VI
3ii6, 1ik9 – hLigD IV C-terminal BRCT domains + DNA repair protein XRCC4
2e2w - hLigD IV BRCT domain - NMR
