3HUF - JenaLib

Asymmetric Unit (Jmol Viewer)

Asym. Unit - sites (Jmol Viewer)

Biological Unit 1 (Jmol Viewer)

Biol. Unit 1 - sites (Jmol Viewer)

Biological Unit 2 (Jmol Viewer)

Biological Unit 3 (Jmol Viewer)

Biological Unit 4 (Jmol Viewer)

Biological Unit 5 (Jmol Viewer)

Title :   STRUCTURE OF THE S. POMBE NBS1-CTP1 COMPLEX

Authors :   R. S. Williams, G. Guenther, J. A. Tainer

Date :   13 Jun 09 (Deposition) - 13 Oct 09 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.15

Chains :   Asym. Unit : A,B,C,E
Biol. Unit 1: A,E  (1x)
Biol. Unit 2: B  (1x)
Biol. Unit 3: C  (1x)
Biol. Unit 4: A,C,E  (1x)
Biol. Unit 5: B  (2x)

Keywords :   Nbs1, Fha Domain, Brct Domain, Phosphoprotein Binding, Phosphoserine Binding, Dna Repair, Ctp1, Chromosomal Protein, Dna Damage, Nucleus, Phosphoprotein, Telomere, Meiosis, Cell Cycle (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   R. S. Williams, G. E. Dodson, O. Limbo, Y. Yamada, J. S. Williams, G. Guenther, S. Classen, J. N. Glover, H. Iwasaki, P. Russell, J. A. Tainer
Nbs1 Flexibly Tethers Ctp1 And Mre11-Rad50 To Coordinate Dn Double-Strand Break Processing And Repair.
Cell(Cambridge, Mass. ) V. 139 87 2009
PubMed-ID: 19804755 | Reference-DOI: 10.1016/J.CELL.2009.07.033

Molecule 1 - DNA REPAIR AND TELOMERE MAINTENANCE PROTEIN NBS1
	Chains	:	A, B, C
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Fragment	:	N-TERMINAL FHA-BRCT1-BRCT2 DOMAINS (RESIDUES 1-321)
	Gene	:	NBS1, SPBC6B1.09C
	Organism Common	:	FISSION YEAST
	Organism Scientific	:	SCHIZOSACCHAROMYCES POMBE
	Organism Taxid	:	4896

Molecule 2 - DOUBLE-STRAND BREAK REPAIR PROTEIN CTP1
	Chains	:	E
	Engineered	:	YES
	Fragment	:	SXT SITES (RESIDUES 72-84)
	Organism Common	:	FISSION YEAST
	Organism Scientific	:	SCHIZOSACCHAROMYCES POMBE
	Organism Taxid	:	4896
	Synonym	:	NBS1-INTERACTING PROTEIN 1, MEIOTICALLY UP-REGULATED GENE 38 PROTEIN
	Synthetic	:	YES

		1	2	3	4
Asymmetric Unit	:	A	B	C	E
Biological Unit 1 (1x)	:	A			E
Biological Unit 2 (1x)	:		B
Biological Unit 3 (1x)	:			C
Biological Unit 4 (1x)	:	A		C	E
Biological Unit 5 (2x)	:		B

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (3, 4)

No.	Name	Count	Type	Full Name
1	SCN	2	Ligand/Ion	THIOCYANATE ION
2	SEP	1	Mod. Amino Acid	PHOSPHOSERINE
3	TPO	1	Mod. Amino Acid	PHOSPHOTHREONINE

Biological Unit 1 (3, 3)

No.	Name	Count	Type	Full Name
1	SCN	1	Ligand/Ion	THIOCYANATE ION
2	SEP	1	Mod. Amino Acid	PHOSPHOSERINE
3	TPO	1	Mod. Amino Acid	PHOSPHOTHREONINE

Biological Unit 2 (1, 1)

No.	Name	Count	Type	Full Name
1	SCN	1	Ligand/Ion	THIOCYANATE ION
2	SEP	-1	Mod. Amino Acid	PHOSPHOSERINE
3	TPO	-1	Mod. Amino Acid	PHOSPHOTHREONINE

Biological Unit 3 (0, 0)

No.	Name	Count	Type	Full Name
1	SCN	-1	Ligand/Ion	THIOCYANATE ION
2	SEP	-1	Mod. Amino Acid	PHOSPHOSERINE
3	TPO	-1	Mod. Amino Acid	PHOSPHOTHREONINE

Biological Unit 4 (3, 3)

No.	Name	Count	Type	Full Name
1	SCN	1	Ligand/Ion	THIOCYANATE ION
2	SEP	1	Mod. Amino Acid	PHOSPHOSERINE
3	TPO	1	Mod. Amino Acid	PHOSPHOTHREONINE

Biological Unit 5 (1, 2)

No.	Name	Count	Type	Full Name
1	SCN	2	Ligand/Ion	THIOCYANATE ION
2	SEP	-1	Mod. Amino Acid	PHOSPHOSERINE
3	TPO	-1	Mod. Amino Acid	PHOSPHOTHREONINE

Asymmetric Unit (2, 2)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	ILE A:3 , ARG A:114 , ALA A:195 , SER A:196 , LEU A:197 , MET A:198	BINDING SITE FOR RESIDUE SCN A 326
2	AC2	SOFTWARE	ALA B:195 , SER B:196 , LEU B:197	BINDING SITE FOR RESIDUE SCN B 326

(no "SS Bond" information available for 3HUF)

(no "Cis Peptide Bond" information available for 3HUF)

(no "SAP(SNP)/Variant" information available for 3HUF)

Asymmetric Unit (1, 3)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	FHA_DOMAIN	PS50006	Forkhead-associated (FHA) domain profile.	NBS1_SCHPO	23-86	3	A:23-86 B:23-86 C:23-86

Biological Unit 1 (1, 1)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	FHA_DOMAIN	PS50006	Forkhead-associated (FHA) domain profile.	NBS1_SCHPO	23-86	1	A:23-86 - -

Biological Unit 2 (1, 1)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	FHA_DOMAIN	PS50006	Forkhead-associated (FHA) domain profile.	NBS1_SCHPO	23-86	1	- B:23-86 -

Biological Unit 3 (1, 1)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	FHA_DOMAIN	PS50006	Forkhead-associated (FHA) domain profile.	NBS1_SCHPO	23-86	1	- - C:23-86

Biological Unit 4 (1, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	FHA_DOMAIN	PS50006	Forkhead-associated (FHA) domain profile.	NBS1_SCHPO	23-86	2	A:23-86 - C:23-86

Biological Unit 5 (1, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	FHA_DOMAIN	PS50006	Forkhead-associated (FHA) domain profile.	NBS1_SCHPO	23-86	2	- B:23-86 -

(no "Exon" information available for 3HUF)

Asymmetric Unit

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
	Number of residues per labelling interval =
	UniProt sequence: complete aligned part

Show mapping:	SCOP domains	CATH domains	Pfam domains	Secondary structure (by author)
	SAPs(SNPs)	PROSITE motifs	Exons
	(details for a mapped element are shown in a popup box when the mouse pointer rests over it)

Chain A from PDB  Type:PROTEIN  Length:301
 aligned with NBS1_SCHPO | O43070 from UniProtKB/Swiss-Prot  Length:613

    Alignment length:320
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320
           NBS1_SCHPO     1 MWIIEAEGDILKGKSRILFPGTYIVGRNVSDDSSHIQVISKSISKRHARFTILTPSEKDYFTGGPCEFEVKDLDTKFGTKVNEKVVGQNGDSYKEKDLKIQLGKCPFTINAYWRSMCIQFDNPEMLSQWASNLNLLGIPTGLRDSDATTHFVMNRQAGSSITVGTMYAFLKKTVIIDDSYLQYLSTVKESVIEDASLMPDALECFKNIIKNNDQFPSSPEDCINSLEGFSCAMLNTSSESHHLLELLGLRISTFMSLGDIDKELISKTDFVVLNNAVYDSEKISFPEGIFCLTIEQLWKIIIERNSRELISKEIERLKYA 320
               SCOP domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeee.........eee..eeeeee........eee..........eeeee...hhhhhhhh....eeeee......eee..ee.....eee...eeeeee......eeeee....eee.hhhhhhhhhhhhhh....ee........eee.........hhhhhhhhhh..eeehhhhhhhhh...........hhhhhhhhhhhhhh.......hhhhhh......eeeee..hhhhhhhhhhh..eeeee.------........eeee.-------------...eeehhhhhhhhhh.........hhhhhhhh Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------FHA_DOMAIN  PDB: A:23-86 UniProt: 23-86                         ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3huf A   1 MWIIEAEGDILKGKSRILFPGTYIVGRNVSDDSSHIQVISKSISKRHARFTILTPSEKDYFTGGPCEFEVKDLDTKFGTKVNEKVVGQNGDSYKEKDLKIQLGKCPFTINAYWRSMCIQFDNPEMLSQWASNLNLLGIPTGLRDSDATTHFVMNRQAGSSITVGTMYAFLKKTVIIDDSYLQYLSTVKESVIEDASLMPDALECFKNIIKNNDQFPSSPEDCINSLEGFSCAMLNTSSESHHLLELLGLRISTFM------KELISKTDFVVLN-------------GIFCLTIEQLWKIIIERNSRELISKEIERLKYA 320
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250    |    - |     270   |     -       290       300       310       320
                                                                                                                                                                                                                                                                                        255    262         274           288

Chain B from PDB  Type:PROTEIN  Length:315
 aligned with NBS1_SCHPO | O43070 from UniProtKB/Swiss-Prot  Length:613

    Alignment length:334
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330    
           NBS1_SCHPO     1 MWIIEAEGDILKGKSRILFPGTYIVGRNVSDDSSHIQVISKSISKRHARFTILTPSEKDYFTGGPCEFEVKDLDTKFGTKVNEKVVGQNGDSYKEKDLKIQLGKCPFTINAYWRSMCIQFDNPEMLSQWASNLNLLGIPTGLRDSDATTHFVMNRQAGSSITVGTMYAFLKKTVIIDDSYLQYLSTVKESVIEDASLMPDALECFKNIIKNNDQFPSSPEDCINSLEGFSCAMLNTSSESHHLLELLGLRISTFMSLGDIDKELISKTDFVVLNNAVYDSEKISFPEGIFCLTIEQLWKIIIERNSRELISKEIERLKYATASNSTPQKIIQPQ 334
               SCOP domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeee.........eee..eeeeee........eee..........eeeee...hhhhhhhh....eeeee......eee..ee.....eee...eeeeee......eeeee....eee.hhhhhhhhhhhhhh....ee........eee....--...hhhhhhhhhh..eeehhhhhhhhh...........hhhhhhhhhhhhhhhh.....hhhhh.......eeeee..hhhhhhhhhhh..eeeee..--..hhhhhhh..eee.....------.......eehhhhhhhhhhh..hhhhhhhhhhhhhhhh---------hh.. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------FHA_DOMAIN  PDB: B:23-86 UniProt: 23-86                         -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3huf B   1 MWIIEAEGDILKGKSRILFPGTYIVGRNVSDDSSHIQVISKSISKRHARFTILTPSEKDYFTGGPCEFEVKDLDTKFGTKVNEKVVGQNGDSYKEKDLKIQLGKCPFTINAYWRSMCIQFDNPEMLSQWASNLNLLGIPTGLRDSDATTHFVMNRQ--SSITVGTMYAFLKKTVIIDDSYLQYLSTVKESVIEDASLMPDALECFKNIIKNNDQFPSSPEDCINSLEGFSCAMLNTSSESHHLLELLGLRISTFMS--DIDKELISKTDFVVLNNAV------SFPEGIFCLTIEQLWKIIIERNSRELISKEIERLKYAT---------LVPR 325
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150     | 160       170       180       190       200       210       220       230       240       250     | 260       270      |  -   |   290       300       310       320|        -|   
                                                                                                                                                                                     156  |                                                                                              256  |               277    284                                  321       322   
                                                                                                                                                                                        159                                                                                                 259

Chain C from PDB  Type:PROTEIN  Length:313
 aligned with NBS1_SCHPO | O43070 from UniProtKB/Swiss-Prot  Length:613

    Alignment length:334
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330    
           NBS1_SCHPO     1 MWIIEAEGDILKGKSRILFPGTYIVGRNVSDDSSHIQVISKSISKRHARFTILTPSEKDYFTGGPCEFEVKDLDTKFGTKVNEKVVGQNGDSYKEKDLKIQLGKCPFTINAYWRSMCIQFDNPEMLSQWASNLNLLGIPTGLRDSDATTHFVMNRQAGSSITVGTMYAFLKKTVIIDDSYLQYLSTVKESVIEDASLMPDALECFKNIIKNNDQFPSSPEDCINSLEGFSCAMLNTSSESHHLLELLGLRISTFMSLGDIDKELISKTDFVVLNNAVYDSEKISFPEGIFCLTIEQLWKIIIERNSRELISKEIERLKYATASNSTPQKIIQPQ 334
               SCOP domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeee..........eee..eeeeee........eee..........eeeee...hhhhhhhh....eeeee......eee..ee.....eee...eeeeee......eeeee....eee.hhhhhhhhhhhhhh....ee........eee.........hhhhhhhhhh..eeehhhhhhhhhhh....----....hhhhhhhhhhhhh.....hhhhhh......eeeee..hhhhhhhhhhh..eeeee.hhhhh.........eee...--------.......eehhhhhhhhhhhh.hhhhhhhhhhhhhhhh---------hh.. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------FHA_DOMAIN  PDB: C:23-86 UniProt: 23-86                         -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3huf C   1 MWIIEAEGDILKGKSRILFPGTYIVGRNVSDDSSHIQVISKSISKRHARFTILTPSEKDYFTGGPCEFEVKDLDTKFGTKVNEKVVGQNGDSYKEKDLKIQLGKCPFTINAYWRSMCIQFDNPEMLSQWASNLNLLGIPTGLRDSDATTHFVMNRQAGSSITVGTMYAFLKKTVIIDDSYLQYLSTVKESV----SLMPDALECFKNIIKNNDQFPSSPEDCINSLEGFSCAMLNTSSESHHLLELLGLRISTFMSLGDIDKELISKTDFVVLNN--------SFPEGIFCLTIEQLWKIIIERNSRELISKEIERLKYAT---------LVPR 325
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190|    | 200       210       220       230       240       250       260       270    |    -   |   290       300       310       320|        -|   
                                                                                                                                                                                                                        191  196                                                                            275      284                                  321       322

Chain E from PDB  Type:PROTEIN  Length:5
 aligned with COM1_SCHPO | O74986 from UniProtKB/Swiss-Prot  Length:294

    Alignment length:5
           COM1_SCHPO    77 STTDE  81
               SCOP domains ----- SCOP domains
               CATH domains ----- CATH domains
               Pfam domains ----- Pfam domains
         Sec.struct. author ..... Sec.struct. author
                 SAPs(SNPs) ----- SAPs(SNPs)
                    PROSITE ----- PROSITE
                 Transcript ----- Transcript
                 3huf E  77 sTtDE  81
                            | |  
                            | |  
                           77-SEP
                             79-TPO

Legend:		→ Mismatch	(orange background)
	-	→ Gap	(green background, '-', border residues have a numbering label)
		→ Modified Residue	(blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
	x	→ Chemical Group	(purple background, 'x', labelled with number + name, e.g. ACE or NH2)
	extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '\|'

(no "SCOP Domain" information available for 3HUF)

(no "CATH Domain" information available for 3HUF)

(no "Pfam Domain" information available for 3HUF)

Asymmetric Unit(hide GO term definitions)

Chain A,B,C (NBS1_SCHPO | O43070)

molecular function
	GO:0004003	ATP-dependent DNA helicase activity	Catalysis of the reaction: ATP + H2O = ADP + phosphate; this reaction drives the unwinding of the DNA helix.
	GO:0003684	damaged DNA binding	Interacting selectively and non-covalently with damaged DNA.
	GO:0005515	protein binding	Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
biological process
	GO:0032508	DNA duplex unwinding	The process in which interchain hydrogen bonds between two strands of DNA are broken or 'melted', generating a region of unpaired single strands.
	GO:0006281	DNA repair	The process of restoring DNA after damage. Genomes are subject to damage by chemical and physical agents in the environment (e.g. UV and ionizing radiations, chemical mutagens, fungal and bacterial toxins, etc.) and by free radicals or alkylating agents endogenously generated in metabolism. DNA is also damaged because of errors during its replication. A variety of different DNA repair pathways have been reported that include direct reversal, base excision repair, nucleotide excision repair, photoreactivation, bypass, double-strand break repair pathway, and mismatch repair pathway.
	GO:0006974	cellular response to DNA damage stimulus	Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating damage to its DNA from environmental insults or errors during metabolism.
	GO:0006302	double-strand break repair	The repair of double-strand breaks in DNA via homologous and nonhomologous mechanisms to reform a continuous DNA helix.
	GO:0000724	double-strand break repair via homologous recombination	The error-free repair of a double-strand break in DNA in which the broken DNA molecule is repaired using homologous sequences. A strand in the broken DNA searches for a homologous region in an intact chromosome to serve as the template for DNA synthesis. The restoration of two intact DNA molecules results in the exchange, reciprocal or nonreciprocal, of genetic material between the intact DNA molecule and the broken DNA molecule.
	GO:0031573	intra-S DNA damage checkpoint	A mitotic cell cycle checkpoint that slows DNA synthesis in response to DNA damage by the prevention of new origin firing and the stabilization of slow replication fork progression.
	GO:0042138	meiotic DNA double-strand break formation	The cell cycle process in which double-strand breaks are generated at defined hotspots throughout the genome during meiosis I. This results in the initiation of meiotic recombination.
	GO:0044773	mitotic DNA damage checkpoint	A mitotic cell cycle checkpoint that detects and negatively regulates progression through the cell cycle in response to DNA damage.
	GO:0007095	mitotic G2 DNA damage checkpoint	A mitotic cell cycle checkpoint that detects and negatively regulates progression through the G2/M transition of the cell cycle in response to DNA damage.
	GO:0033127	regulation of histone phosphorylation	Any process that modulates the frequency, rate or extent of the addition of one or more phosphate groups to a histone protein.
	GO:0042770	signal transduction in response to DNA damage	A cascade of processes induced by the detection of DNA damage within a cell.
	GO:0016233	telomere capping	A process in which telomeres are protected from degradation and fusion, thereby ensuring chromosome stability by protecting the ends from both degradation and from being recognized as damaged DNA. May be mediated by specific single- or double-stranded telomeric DNA binding proteins.
	GO:0000723	telomere maintenance	Any process that contributes to the maintenance of proper telomeric length and structure by affecting and monitoring the activity of telomeric proteins, the length of telomeric DNA and the replication and repair of the DNA. These processes includes those that shorten, lengthen, replicate and repair the telomeric DNA sequences.
cellular component
	GO:0030870	Mre11 complex	Trimeric protein complex that possesses endonuclease activity; involved in meiotic recombination, DNA repair and checkpoint signaling. In Saccharomyces cerevisiae, the complex comprises Mre11p, Rad50p, and Xrs2p; complexes identified in other species generally contain proteins orthologous to the Saccharomyces cerevisiae proteins.
	GO:0005694	chromosome	A structure composed of a very long molecule of DNA and associated proteins (e.g. histones) that carries hereditary information.
	GO:0000781	chromosome, telomeric region	The terminal region of a linear chromosome that includes the telomeric DNA repeats and associated proteins.
	GO:0000784	nuclear chromosome, telomeric region	The terminal region of a linear nuclear chromosome that includes the telomeric DNA repeats and associated proteins.
	GO:0005634	nucleus	A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.

Chain E (COM1_SCHPO | O74986)

molecular function
	GO:0003677	DNA binding	Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
	GO:0004519	endonuclease activity	Catalysis of the hydrolysis of ester linkages within nucleic acids by creating internal breaks.
	GO:0016787	hydrolase activity	Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
	GO:0004518	nuclease activity	Catalysis of the hydrolysis of ester linkages within nucleic acids.
	GO:0005515	protein binding	Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
	GO:0000014	single-stranded DNA endodeoxyribonuclease activity	Catalysis of the hydrolysis of ester linkages within a single-stranded deoxyribonucleic acid molecule by creating internal breaks.
biological process
	GO:0000077	DNA damage checkpoint	A cell cycle checkpoint that regulates progression through the cell cycle in response to DNA damage. A DNA damage checkpoint may blocks cell cycle progression (in G1, G2 or metaphase) or slow the rate at which S phase proceeds.
	GO:0000729	DNA double-strand break processing	The 5' to 3' exonucleolytic resection of the DNA at the site of the break to form a 3' single-strand DNA overhang.
	GO:0006281	DNA repair	The process of restoring DNA after damage. Genomes are subject to damage by chemical and physical agents in the environment (e.g. UV and ionizing radiations, chemical mutagens, fungal and bacterial toxins, etc.) and by free radicals or alkylating agents endogenously generated in metabolism. DNA is also damaged because of errors during its replication. A variety of different DNA repair pathways have been reported that include direct reversal, base excision repair, nucleotide excision repair, photoreactivation, bypass, double-strand break repair pathway, and mismatch repair pathway.
	GO:0006974	cellular response to DNA damage stimulus	Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating damage to its DNA from environmental insults or errors during metabolism.
	GO:0000724	double-strand break repair via homologous recombination	The error-free repair of a double-strand break in DNA in which the broken DNA molecule is repaired using homologous sequences. A strand in the broken DNA searches for a homologous region in an intact chromosome to serve as the template for DNA synthesis. The restoration of two intact DNA molecules results in the exchange, reciprocal or nonreciprocal, of genetic material between the intact DNA molecule and the broken DNA molecule.
	GO:1990898	meiotic DNA double-strand break clipping	The process by which SPO11/Rec12-oligonucleotide complexes are removed from 5' DNA double-strand breaks induced during meiosis. Proteins involved in this process include the MRX/MRN complex and Sae2/Ctp1/RBBP8(CtIP).
	GO:0000706	meiotic DNA double-strand break processing	The cell cycle process in which the 5' to 3' exonucleolytic resection of the DNA at the site of the break to form a 3' single-strand DNA overhang occurs. This takes place during meiosis.
	GO:1990899	meiotic DNA double-strand break resectioning	The process following clipping in double-strand break processing of SPO11 induced breaks, where long-tract single-stranded 3'-end DNA is generated from naked (SPO11 has been removed) 5' ends.
	GO:0051321	meiotic cell cycle	Progression through the phases of the meiotic cell cycle, in which canonically a cell replicates to produce four offspring with half the chromosomal content of the progenitor cell via two nuclear divisions.
	GO:0033314	mitotic DNA replication checkpoint	A cell cycle checkpoint that acts during a mitotic cell cycle and prevents the initiation of mitosis until DNA replication is complete, thereby ensuring that progeny inherit a full complement of the genome.
	GO:0090305	nucleic acid phosphodiester bond hydrolysis	The nucleic acid metabolic process in which the phosphodiester bonds between nucleotides are cleaved by hydrolysis.
	GO:0010212	response to ionizing radiation	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a ionizing radiation stimulus. Ionizing radiation is radiation with sufficient energy to remove electrons from atoms and may arise from spontaneous decay of unstable isotopes, resulting in alpha and beta particles and gamma rays. Ionizing radiation also includes X-rays.
cellular component
	GO:0000228	nuclear chromosome	A chromosome that encodes the nuclear genome and is found in the nucleus of a eukaryotic cell during the cell cycle phases when the nucleus is intact.
	GO:0005634	nucleus	A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.

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	3huf
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		Orientation in Membranes	:	OPM
		Protein Surface	:	SURFACE
		Secondary Structure	:	DSSP (structure derived) \| HSSP (homology derived)
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	COM1_SCHPO \| O74986
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		Protein-protein Interaction	:	DIP
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	NBS1_SCHPO \| O43070
		Comparative Protein Structure Models	:	ModBase
		Genomic Information	:	Ensembl
		Protein-protein Interaction	:	DIP
		Sequence, Family and Domain Information	:	InterPro \| Pfam \| SMART \| UniProtKB/SwissProt

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		Domain Information	:	XDom
		Interatomic Contacts of Structural Units	:	CSU
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Access by UniProt ID/Accession number
	COM1_SCHPO \| O74986
		Protein Disorder Prediction	:	DisEMBL \| FoldIndex \| GLOBPLOT (for more information see DisProt)
	NBS1_SCHPO \| O43070
		Protein Disorder Prediction	:	DisEMBL \| FoldIndex \| GLOBPLOT (for more information see DisProt)

UniProtKB/Swiss-Prot
	COM1_SCHPO \| O74986	:	4x01
	NBS1_SCHPO \| O43070	:	3hue 3i0m 3i0n 4fbk 4fbq 4fbw

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (3, 4)

Sites (2, 2)

SS Bonds (0, 0)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (1, 3)

Exons (0, 0)

Sequences/Alignments

Classification and Annotation

SCOP Domains (0, 0)

CATH Domains (0, 0)

Pfam Domains (0, 0)

Gene Ontology (36, 41)

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Related Entries

Entries Sharing at Least One Protein Chain (UniProt ID)

Related Entries Specified in the PDB File