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Conserved domains on  [gi|74777550|sp|Q5CT62|]
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RecName: Full=Structure-specific endonuclease subunit SLX1 homolog

Protein Classification

structure-specific endonuclease subunit SLX1( domain architecture ID 10179957)

structure-specific endonuclease subunit SLX1, a GIY-YIG nuclease family protein, is the catalytic subunit of the SLX1-SLX4 structure-specific endonuclease that resolves DNA secondary structures generated during DNA repair and recombination

CATH:  3.40.1440.10
EC:  3.1.-.-
Gene Ontology:  GO:0033557|GO:0017108|GO:0046872|GO:0006310|GO:0006281
PubMed:  16646971
SCOP:  3000597

Graphical summary

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List of domain hits

 Name Accession Description Interval E-value
GIY-YIG_SLX1 cd10455
Catalytic GIY-YIG domain of yeast structure-specific endonuclease subunit SLX1 and its ...
 7-79 6.88e-42

Catalytic GIY-YIG domain of yeast structure-specific endonuclease subunit SLX1 and its eukaryotic homologs; Structure-specific endonuclease subunit SLX1 is a highly conserved protein from yeast to human, with an N-terminal GIY-YIG endonuclease domain and a C-terminal PHD-type zinc finger postulated to mediate protein-protein or protein-DNA interaction. SLX1 forms active heterodimeric complexes with its SLX4 partner, which has additional roles in the DNA damage response that are distinct from the function of the heterodimeric SLX1-SLX4 nuclease. In yeast, the SLX1-SLX4 complex functions as a 5' flap endonuclease that maintains ribosomal DNA copy number, where SLX1 and SLX4 are shown to be catalytic and regulatory subunits, respectively. This endonuclease introduces single-strand cuts in duplex DNA on the 3' side of junctions with single-strand DNA. In addition to 5' flap endonuclease activity, human SLX1-SLX4 complex has been identified as a Holliday junction resolvase that promotes symmetrical cleavage of static and migrating Holliday junctions. SLX1 also associates with MUS81, EME1, C20orf94, PLK1, and ERCC1. Some eukaryotic SLX1 homologs lack the zinc finger domain, but possess intrinsically unstructured extensions of unknown function. These unstructured segments might be involved in interactions with other proteins.


:

Pssm-ID: 198402  Cd Length: 76  Bit Score: 141.99  E-value: 6.88e-42
                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 74777550   7 LHYCYFLLSEA--KKKASYIGYSVNPCRRLRQHNGEIKKGAKKTKSGVPWNLGICVGGFPDRVAALRFEWAWQHP 79
Cdd:cd10455   1 FYGVYLLRSLNpkYKGRTYIGFTVNPPRRLRQHNGELKGGAKKTSRKRPWEMVLIVHGFPSKVAALQFEWAWQHP 75
 
Name Accession Description Interval E-value
GIY-YIG_SLX1 cd10455
Catalytic GIY-YIG domain of yeast structure-specific endonuclease subunit SLX1 and its ...
 7-79 6.88e-42

Catalytic GIY-YIG domain of yeast structure-specific endonuclease subunit SLX1 and its eukaryotic homologs; Structure-specific endonuclease subunit SLX1 is a highly conserved protein from yeast to human, with an N-terminal GIY-YIG endonuclease domain and a C-terminal PHD-type zinc finger postulated to mediate protein-protein or protein-DNA interaction. SLX1 forms active heterodimeric complexes with its SLX4 partner, which has additional roles in the DNA damage response that are distinct from the function of the heterodimeric SLX1-SLX4 nuclease. In yeast, the SLX1-SLX4 complex functions as a 5' flap endonuclease that maintains ribosomal DNA copy number, where SLX1 and SLX4 are shown to be catalytic and regulatory subunits, respectively. This endonuclease introduces single-strand cuts in duplex DNA on the 3' side of junctions with single-strand DNA. In addition to 5' flap endonuclease activity, human SLX1-SLX4 complex has been identified as a Holliday junction resolvase that promotes symmetrical cleavage of static and migrating Holliday junctions. SLX1 also associates with MUS81, EME1, C20orf94, PLK1, and ERCC1. Some eukaryotic SLX1 homologs lack the zinc finger domain, but possess intrinsically unstructured extensions of unknown function. These unstructured segments might be involved in interactions with other proteins.


Pssm-ID: 198402  Cd Length: 76  Bit Score: 141.99  E-value: 6.88e-42
                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 74777550   7 LHYCYFLLSEA--KKKASYIGYSVNPCRRLRQHNGEIKKGAKKTKSGVPWNLGICVGGFPDRVAALRFEWAWQHP 79
Cdd:cd10455   1 FYGVYLLRSLNpkYKGRTYIGFTVNPPRRLRQHNGELKGGAKKTSRKRPWEMVLIVHGFPSKVAALQFEWAWQHP 75
GIY-YIG pfam01541
GIY-YIG catalytic domain; This domain called GIY-YIG is found in the amino terminal region of ...
 8-77 1.51e-09

GIY-YIG catalytic domain; This domain called GIY-YIG is found in the amino terminal region of excinuclease abc subunit c (uvrC), bacteriophage T4 endonucleases segA, segB, segC, segD and segE; it is also found in putative endonucleases encoded by group I introns of fungi and phage. The structure of I-TevI a GIY-YIG endonuclease, reveals a novel alpha/beta-fold with a central three-stranded antiparallel beta-sheet flanked by three helices. The most conserved and putative catalytic residues are located on a shallow, concave surface and include a metal coordination site.


Pssm-ID: 426314 [Multi-domain]  Cd Length: 78  Bit Score: 54.27  E-value: 1.51e-09
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 74777550     8 HYCYFLLSEAKKKAsYIGYSVNPCRRLRQHNGEIKKGAKKTKSGVPWNLgICVGGFPDRVAALRFEWAWQ 77
Cdd:pfam01541   2 GGIYIIRNKDNKLL-YVGSTKNLERRLNQHNAGKGAKYTRGKGVEPFKL-IYLEEFPTKSEALELEKYLI 69
YhbQ COG2827
Predicted endonuclease, GIY-YIG superfamily [Replication, recombination and repair];
8-75 3.37e-09

Predicted endonuclease, GIY-YIG superfamily [Replication, recombination and repair];


Pssm-ID: 442075 [Multi-domain]  Cd Length: 82  Bit Score: 53.21  E-value: 3.37e-09
                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 74777550   8 HYCYFLLSeAKKKASYIGYSVNPCRRLRQHNGeiKKGAKKTKSGVPWNLgICVGGFPDRVAALRFEWA 75
Cdd:COG2827   3 YYVYILRC-ADNGTLYTGVTNDLERRLAEHNS--GKGAKFTRKRRPVKL-VYYEEFEDRSEALKREKQ 66
PRK00329 PRK00329
GIY-YIG nuclease superfamily protein; Validated
 11-92 1.30e-06

GIY-YIG nuclease superfamily protein; Validated


Pssm-ID: 178979  Cd Length: 86  Bit Score: 46.07  E-value: 1.30e-06
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 74777550   11 YFLLSEAKKKASYIGYSVNPCRRLRQHN-GeikKGAKKTKSGVPWNLgICVGGFPDRVAALRFEWAwqhpnICKVTRDNI 89
Cdd:PRK00329   8 FLYLLRCADGSLYTGITTDVERRFAQHQsG---KGAKYTRGRPPLTL-VFVEPVGDRSEALRAEYR-----FKQLTKKQK 78


                 ...
gi 74777550   90 ESW 92
Cdd:PRK00329  79 ERL 81
GIYc smart00465
GIY-YIG type nucleases (URI domain);
8-75 6.90e-04

GIY-YIG type nucleases (URI domain);


Pssm-ID: 214677 [Multi-domain]  Cd Length: 84  Bit Score: 38.17  E-value: 6.90e-04
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 74777550      8 HYCYFLLSEAKKKAsYIGYSVNPCRRLRQHNGEIKKGAKktksgvPWNLGICVGGFPDRVAALRFEWA 75
Cdd:smart00465   2 PGVYYITNKKNGKL-YVGKAKNLRNRLKRHFSGSRKGRL------LIDALLKYGGNFEFIILESFDES 62
 
Name Accession Description Interval E-value
GIY-YIG_SLX1 cd10455
Catalytic GIY-YIG domain of yeast structure-specific endonuclease subunit SLX1 and its ...
 7-79 6.88e-42

Catalytic GIY-YIG domain of yeast structure-specific endonuclease subunit SLX1 and its eukaryotic homologs; Structure-specific endonuclease subunit SLX1 is a highly conserved protein from yeast to human, with an N-terminal GIY-YIG endonuclease domain and a C-terminal PHD-type zinc finger postulated to mediate protein-protein or protein-DNA interaction. SLX1 forms active heterodimeric complexes with its SLX4 partner, which has additional roles in the DNA damage response that are distinct from the function of the heterodimeric SLX1-SLX4 nuclease. In yeast, the SLX1-SLX4 complex functions as a 5' flap endonuclease that maintains ribosomal DNA copy number, where SLX1 and SLX4 are shown to be catalytic and regulatory subunits, respectively. This endonuclease introduces single-strand cuts in duplex DNA on the 3' side of junctions with single-strand DNA. In addition to 5' flap endonuclease activity, human SLX1-SLX4 complex has been identified as a Holliday junction resolvase that promotes symmetrical cleavage of static and migrating Holliday junctions. SLX1 also associates with MUS81, EME1, C20orf94, PLK1, and ERCC1. Some eukaryotic SLX1 homologs lack the zinc finger domain, but possess intrinsically unstructured extensions of unknown function. These unstructured segments might be involved in interactions with other proteins.


Pssm-ID: 198402  Cd Length: 76  Bit Score: 141.99  E-value: 6.88e-42
                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 74777550   7 LHYCYFLLSEA--KKKASYIGYSVNPCRRLRQHNGEIKKGAKKTKSGVPWNLGICVGGFPDRVAALRFEWAWQHP 79
Cdd:cd10455   1 FYGVYLLRSLNpkYKGRTYIGFTVNPPRRLRQHNGELKGGAKKTSRKRPWEMVLIVHGFPSKVAALQFEWAWQHP 75
GIY-YIG_SLX1_like cd10449
Catalytic GIY-YIG domain of yeast structure-specific endonuclease subunit SLX1 and its ...
 9-78 3.99e-11

Catalytic GIY-YIG domain of yeast structure-specific endonuclease subunit SLX1 and its homologs; Structure-specific endonuclease subunit SLX1 is a highly conserved protein from yeast to human, with an N-terminal GIY-YIG endonuclease domain and a C-terminal PHD-type zinc finger postulated to mediate protein-protein or protein-DNA interaction. SLX1 forms active heterodimeric complexes with its SLX4 partner, which has additional roles in the DNA damage response that are distinct from the function of the heterodimeric SLX1-SLX4 nuclease. In yeast, the SLX1-SLX4 complex functions as a 5' flap endonuclease that maintains ribosomal DNA copy number, where SLX1 and SLX4 are shown to be catalytic and regulatory subunits, respectively. This endonuclease introduces single-strand cuts in duplex DNA on the 3' side of junctions with single-strand DNA. In addition to 5' flap endonuclease activity, human SLX1-SLX4 complex has been identified as a Holliday junction resolvase that promotes symmetrical cleavage of static and migrating Holliday junctions. SLX1 also associates with MUS81, EME1, C20orf94, PLK1, and ERCC1. Some eukaryotic SLX1 homologs lack the zinc finger domain, but possess intrinsically unstructured extensions of unknown function. These unstructured segments might be involved in interactions with other proteins.


Pssm-ID: 198396  Cd Length: 67  Bit Score: 58.37  E-value: 3.99e-11
                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 74777550   9 YCYFLLSEAKKKaSYIGYSVNPCRRLRQHNGeikKGAKKTKSGVPWNLgICVGGFPDRVAALRFEWAWQH 78
Cdd:cd10449   1 YVYILYSEKLDR-YYIGYTSDLERRLEQHNS---GKSKFTSKYRPWEL-VYSEAFESKSEALKREKYLKS 65
GIY-YIG pfam01541
GIY-YIG catalytic domain; This domain called GIY-YIG is found in the amino terminal region of ...
 8-77 1.51e-09

GIY-YIG catalytic domain; This domain called GIY-YIG is found in the amino terminal region of excinuclease abc subunit c (uvrC), bacteriophage T4 endonucleases segA, segB, segC, segD and segE; it is also found in putative endonucleases encoded by group I introns of fungi and phage. The structure of I-TevI a GIY-YIG endonuclease, reveals a novel alpha/beta-fold with a central three-stranded antiparallel beta-sheet flanked by three helices. The most conserved and putative catalytic residues are located on a shallow, concave surface and include a metal coordination site.


Pssm-ID: 426314 [Multi-domain]  Cd Length: 78  Bit Score: 54.27  E-value: 1.51e-09
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 74777550     8 HYCYFLLSEAKKKAsYIGYSVNPCRRLRQHNGEIKKGAKKTKSGVPWNLgICVGGFPDRVAALRFEWAWQ 77
Cdd:pfam01541   2 GGIYIIRNKDNKLL-YVGSTKNLERRLNQHNAGKGAKYTRGKGVEPFKL-IYLEEFPTKSEALELEKYLI 69
YhbQ COG2827
Predicted endonuclease, GIY-YIG superfamily [Replication, recombination and repair];
8-75 3.37e-09

Predicted endonuclease, GIY-YIG superfamily [Replication, recombination and repair];


Pssm-ID: 442075 [Multi-domain]  Cd Length: 82  Bit Score: 53.21  E-value: 3.37e-09
                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 74777550   8 HYCYFLLSeAKKKASYIGYSVNPCRRLRQHNGeiKKGAKKTKSGVPWNLgICVGGFPDRVAALRFEWA 75
Cdd:COG2827   3 YYVYILRC-ADNGTLYTGVTNDLERRLAEHNS--GKGAKFTRKRRPVKL-VYYEEFEDRSEALKREKQ 66
PRK00329 PRK00329
GIY-YIG nuclease superfamily protein; Validated
 11-92 1.30e-06

GIY-YIG nuclease superfamily protein; Validated


Pssm-ID: 178979  Cd Length: 86  Bit Score: 46.07  E-value: 1.30e-06
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 74777550   11 YFLLSEAKKKASYIGYSVNPCRRLRQHN-GeikKGAKKTKSGVPWNLgICVGGFPDRVAALRFEWAwqhpnICKVTRDNI 89
Cdd:PRK00329   8 FLYLLRCADGSLYTGITTDVERRFAQHQsG---KGAKYTRGRPPLTL-VFVEPVGDRSEALRAEYR-----FKQLTKKQK 78


                 ...
gi 74777550   90 ESW 92
Cdd:PRK00329  79 ERL 81
GIY-YIG_UPF0213 cd10456
The GIY-YIG domain of uncharacterized protein family UPF0213 related to structure-specific ...
 8-75 5.07e-06

The GIY-YIG domain of uncharacterized protein family UPF0213 related to structure-specific endonuclease SLX1; This family contains a group of uncharacterized proteins found mainly in bacteria and several in dsDNA viruses. Although their function roles have not been recognized, these proteins show significant sequence similarities with the N-terminal GIY-YIG endonuclease domain of structure-specific endonuclease subunit SLX1, which binds another structure-specific endonuclease subunit SLX4 to form an active heterodimeric SLX1-SLX4 complex. This complex functions as a 5' flap endonuclease in yeast, and has also been identified as a Holliday junction resolvase in human.


Pssm-ID: 198403  Cd Length: 68  Bit Score: 43.94  E-value: 5.07e-06
                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 74777550   8 HYCYFLlsEAKKKASYIGYSVNPCRRLRQHNGEikKGAKKTKSGVPWNLgICVGGFPDRVAALRFEWA 75
Cdd:cd10456   1 WYVYIL--RCADGSLYTGITTDLERRLAEHNSG--KGAKYTRGRRPVKL-VYSEEFDDRSEALKREYR 63
GIYc smart00465
GIY-YIG type nucleases (URI domain);
8-75 6.90e-04

GIY-YIG type nucleases (URI domain);


Pssm-ID: 214677 [Multi-domain]  Cd Length: 84  Bit Score: 38.17  E-value: 6.90e-04
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 74777550      8 HYCYFLLSEAKKKAsYIGYSVNPCRRLRQHNGEIKKGAKktksgvPWNLGICVGGFPDRVAALRFEWA 75
Cdd:smart00465   2 PGVYYITNKKNGKL-YVGKAKNLRNRLKRHFSGSRKGRL------LIDALLKYGGNFEFIILESFDES 62
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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