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(-) Description

Title :  THE CRYSTAL STRUCTURE OF THE HUMAN BUB1 TPR DOMAIN IN COMPLEX WITH THE KI MOTIF OF KNL1
 
Authors :  V. Krenn, A. Wehenkel, X. Li, S. Santaguida, A. Musacchio
Date :  15 Sep 11  (Deposition) - 29 Feb 12  (Release) - 29 Feb 12  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.60
Chains :  Asym. Unit :  A,B,C,D,E,F,G,H
Biol. Unit 1:  A,E  (1x)
Biol. Unit 2:  B,F  (1x)
Biol. Unit 3:  C,G  (1x)
Biol. Unit 4:  D,H  (1x)
Keywords :  Cell Cycle, Transferase, Spindle Assembly Checkpoint, Mitosis, Tpr Repeat, Knl1, Kmn Network (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  V. Krenn, A. Wehenkel, X. Li, S. Santaguida, A. Musacchio
Structural Analysis Reveals Features Of The Spindle Checkpoint Kinase Bub1-Kinetochore Subunit Knl1 Interaction.
J. Cell Biol. V. 196 451 2012
PubMed-ID: 22331848  |  Reference-DOI: 10.1083/JCB.201110013

(-) Compounds

Molecule 1 - MITOTIC CHECKPOINT SERINE/THREONINE-PROTEIN KINASE BUB1
    ChainsA, B, C, D
    EC Number2.7.11.1
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPGEX-6P-2RBS
    Expression System StrainBL21(DE3)
    Expression System Taxid511693
    Expression System VariantPLYSS
    Expression System Vector TypePLASMID
    FragmentTPR DOMAIN, RESIDUES 1-150
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymHBUB1, BUB1A, BUB1
 
Molecule 2 - PROTEIN CASC5
    ChainsE, F, G, H
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System StrainBL21
    Expression System Taxid511693
    Expression System VariantROSETTA
    FragmentKI MOTIF, RESIDUES 150-200
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymALL1-FUSED GENE FROM CHROMOSOME 15Q14 PROTEIN, AF15Q14, BUB-LINKING KINETOCHORE PROTEIN, BLINKIN, CANCER SUSCEPTIBILITY CANDIDATE GENE 5 PROTEIN, CANCER/TESTIS ANTIGEN 29, CT29, KINETOCHORE-NULL PROTEIN 1, PROTEIN D40/AF15Q14, KNL1

 Structural Features

(-) Chains, Units

  12345678
Asymmetric Unit ABCDEFGH
Biological Unit 1 (1x)A   E   
Biological Unit 2 (1x) B   F  
Biological Unit 3 (1x)  C   G 
Biological Unit 4 (1x)   D   H

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 4A1G)

(-) Sites  (0, 0)

(no "Site" information available for 4A1G)

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 4A1G)

(-) Cis Peptide Bonds  (4, 4)

Asymmetric Unit
No.Residues
1Glu A:131 -Pro A:132
2Glu B:131 -Pro B:132
3Glu C:131 -Pro C:132
4Glu D:131 -Pro D:132

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (2, 8)

Asymmetric Unit (2, 8)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_040400G20DBUB1_HUMANPolymorphism35890336A/B/C/DG20D
2UniProtVAR_008849E36DBUB1_HUMANUnclassified1801328A/B/C/DE36D

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 1 (2, 2)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_040400G20DBUB1_HUMANPolymorphism35890336AG20D
2UniProtVAR_008849E36DBUB1_HUMANUnclassified1801328AE36D

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 2 (2, 2)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_040400G20DBUB1_HUMANPolymorphism35890336BG20D
2UniProtVAR_008849E36DBUB1_HUMANUnclassified1801328BE36D

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 3 (2, 2)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_040400G20DBUB1_HUMANPolymorphism35890336CG20D
2UniProtVAR_008849E36DBUB1_HUMANUnclassified1801328CE36D

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 4 (2, 2)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_040400G20DBUB1_HUMANPolymorphism35890336DG20D
2UniProtVAR_008849E36DBUB1_HUMANUnclassified1801328DE36D

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

(-) PROSITE Motifs  (1, 4)

Asymmetric Unit (1, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1BUB1_NPS51489 BUB1 N-terminal domain profile.BUB1_HUMAN11-182
 
 
 
  4A:11-147
B:11-150
C:11-150
D:11-148
Biological Unit 1 (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1BUB1_NPS51489 BUB1 N-terminal domain profile.BUB1_HUMAN11-182
 
 
 
  1A:11-147
-
-
-
Biological Unit 2 (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1BUB1_NPS51489 BUB1 N-terminal domain profile.BUB1_HUMAN11-182
 
 
 
  1-
B:11-150
-
-
Biological Unit 3 (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1BUB1_NPS51489 BUB1 N-terminal domain profile.BUB1_HUMAN11-182
 
 
 
  1-
-
C:11-150
-
Biological Unit 4 (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1BUB1_NPS51489 BUB1 N-terminal domain profile.BUB1_HUMAN11-182
 
 
 
  1-
-
-
D:11-148

(-) Exons   (0, 0)

(no "Exon" information available for 4A1G)

(-) Sequences/Alignments

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:146
 aligned with BUB1_HUMAN | O43683 from UniProtKB/Swiss-Prot  Length:1085

    Alignment length:146
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141      
           BUB1_HUMAN     2 DTPENVLQMLEAHMQSYKGNDPLGEWERYIQWVEENFPENKEYLITLLEHLMKEFLDKKKYHNDPRFISYCLKFAEYNSDLHQFFEFLYNHGIGTLSSPLYIAWAGHLEAQGELQHASAVLQRGIQNQAEPREFLQQQYRLFQTRL 147
               SCOP domains -------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhhh......hhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhh.hhhhh.hhhhhhhhhhhhh...hhhhhhhhhhh......hhhhhhhhhhhhhhh.hhhhhhhhhhhhhhh...hhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------D---------------D--------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------BUB1_N  PDB: A:11-147 UniProt: 11-182                                                                                                     PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 4a1g A   2 DTPENVLQMLEAHMQSYKGNDPLGEWERYIQWVEENFPENKEYLITLLEHLMKEFLDKKKYHNDPRFISYCLKFAEYNSDLHQFFEFLYNHGIGTLSSPLYIAWAGHLEAQGELQHASAVLQRGIQNQAEPREFLQQQYRLFQTRL 147
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141      

Chain B from PDB  Type:PROTEIN  Length:149
 aligned with BUB1_HUMAN | O43683 from UniProtKB/Swiss-Prot  Length:1085

    Alignment length:149
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141         
           BUB1_HUMAN     2 DTPENVLQMLEAHMQSYKGNDPLGEWERYIQWVEENFPENKEYLITLLEHLMKEFLDKKKYHNDPRFISYCLKFAEYNSDLHQFFEFLYNHGIGTLSSPLYIAWAGHLEAQGELQHASAVLQRGIQNQAEPREFLQQQYRLFQTRLTET 150
               SCOP domains ----------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhh.hhhhh.hhhhhhhhhhhhh...hhhhhhhhhhhh.....hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------D---------------D------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ---------BUB1_N  PDB: B:11-150 UniProt: 11-182                                                                                                        PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 4a1g B   2 DTPENVLQMLEAHMQSYKGNDPLGEWERYIQWVEENFPENKEYLITLLEHLMKEFLDKKKYHNDPRFISYCLKFAEYNSDLHQFFEFLYNHGIGTLSSPLYIAWAGHLEAQGELQHASAVLQRGIQNQAEPREFLQQQYRLFQTRLTET 150
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141         

Chain C from PDB  Type:PROTEIN  Length:149
 aligned with BUB1_HUMAN | O43683 from UniProtKB/Swiss-Prot  Length:1085

    Alignment length:149
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141         
           BUB1_HUMAN     2 DTPENVLQMLEAHMQSYKGNDPLGEWERYIQWVEENFPENKEYLITLLEHLMKEFLDKKKYHNDPRFISYCLKFAEYNSDLHQFFEFLYNHGIGTLSSPLYIAWAGHLEAQGELQHASAVLQRGIQNQAEPREFLQQQYRLFQTRLTET 150
               SCOP domains ----------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhh.hhhhh.hhhhhhhhhhhhh...hhhhhhhhhhhh.....hhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------D---------------D------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ---------BUB1_N  PDB: C:11-150 UniProt: 11-182                                                                                                        PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 4a1g C   2 DTPENVLQMLEAHMQSYKGNDPLGEWERYIQWVEENFPENKEYLITLLEHLMKEFLDKKKYHNDPRFISYCLKFAEYNSDLHQFFEFLYNHGIGTLSSPLYIAWAGHLEAQGELQHASAVLQRGIQNQAEPREFLQQQYRLFQTRLTET 150
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141         

Chain D from PDB  Type:PROTEIN  Length:148
 aligned with BUB1_HUMAN | O43683 from UniProtKB/Swiss-Prot  Length:1085

    Alignment length:148
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140        
           BUB1_HUMAN     1 MDTPENVLQMLEAHMQSYKGNDPLGEWERYIQWVEENFPENKEYLITLLEHLMKEFLDKKKYHNDPRFISYCLKFAEYNSDLHQFFEFLYNHGIGTLSSPLYIAWAGHLEAQGELQHASAVLQRGIQNQAEPREFLQQQYRLFQTRLT 148
               SCOP domains ---------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhh.hhhhh.hhhhhhhhhhhhhhh.hhhhhhhhhhhhh....hhhhhhhhhhhhhhh.hhhhhhhhhhhhhhh...hhhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) -------------------D---------------D---------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------BUB1_N  PDB: D:11-148 UniProt: 11-182                                                                                                      PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 4a1g D   1 MDTPENVLQMLEAHMQSYKGNDPLGEWERYIQWVEENFPENKEYLITLLEHLMKEFLDKKKYHNDPRFISYCLKFAEYNSDLHQFFEFLYNHGIGTLSSPLYIAWAGHLEAQGELQHASAVLQRGIQNQAEPREFLQQQYRLFQTRLT 148
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140        

Chain E from PDB  Type:PROTEIN  Length:12
 aligned with KNL1_HUMAN | Q8NG31 from UniProtKB/Swiss-Prot  Length:2342

    Alignment length:12
                                   211  
           KNL1_HUMAN   202 KIDTTSFLANLK 213
               SCOP domains ------------ SCOP domains
               CATH domains ------------ CATH domains
               Pfam domains ------------ Pfam domains
         Sec.struct. author ..hhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------ SAPs(SNPs)
                    PROSITE ------------ PROSITE
                 Transcript ------------ Transcript
                 4a1g E 176 KIDTTSFLANLK 187
                                   185  

Chain F from PDB  Type:PROTEIN  Length:15
 aligned with KNL1_HUMAN | Q8NG31 from UniProtKB/Swiss-Prot  Length:2342

    Alignment length:15
                                   210     
           KNL1_HUMAN   201 TKIDTTSFLANLKLH 215
               SCOP domains --------------- SCOP domains
               CATH domains --------------- CATH domains
               Pfam domains --------------- Pfam domains
         Sec.struct. author ...hhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) --------------- SAPs(SNPs)
                    PROSITE --------------- PROSITE
                 Transcript --------------- Transcript
                 4a1g F 175 TKIDTTSFLANLKLH 189
                                   184     

Chain G from PDB  Type:PROTEIN  Length:15
 aligned with KNL1_HUMAN | Q8NG31 from UniProtKB/Swiss-Prot  Length:2342

    Alignment length:15
                                   210     
           KNL1_HUMAN   201 TKIDTTSFLANLKLH 215
               SCOP domains --------------- SCOP domains
               CATH domains --------------- CATH domains
               Pfam domains --------------- Pfam domains
         Sec.struct. author ...hhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) --------------- SAPs(SNPs)
                    PROSITE --------------- PROSITE
                 Transcript --------------- Transcript
                 4a1g G 175 TKIDTTSFLANLKLH 189
                                   184     

Chain H from PDB  Type:PROTEIN  Length:16
 aligned with KNL1_HUMAN | Q8NG31 from UniProtKB/Swiss-Prot  Length:2342

    Alignment length:16
                                   210      
           KNL1_HUMAN   201 TKIDTTSFLANLKLHT 216
               SCOP domains ---------------- SCOP domains
               CATH domains ---------------- CATH domains
               Pfam domains ---------------- Pfam domains
         Sec.struct. author ...hhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) ---------------- SAPs(SNPs)
                    PROSITE ---------------- PROSITE
                 Transcript ---------------- Transcript
                 4a1g H 175 TKIDTTSFLANLKLHT 190
                                   184      

   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 '|'

 Classification and Annotation

(-) SCOP Domains  (0, 0)

(no "SCOP Domain" information available for 4A1G)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 4A1G)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 4A1G)

(-) Gene Ontology  (38, 52)

Asymmetric Unit(hide GO term definitions)
Chain A,B,C,D   (BUB1_HUMAN | O43683)
molecular function
    GO:0005524    ATP binding    Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
    GO:0016301    kinase activity    Catalysis of the transfer of a phosphate group, usually from ATP, to a substrate molecule.
    GO:0000166    nucleotide binding    Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
    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:0004672    protein kinase activity    Catalysis of the phosphorylation of an amino acid residue in a protein, usually according to the reaction: a protein + ATP = a phosphoprotein + ADP.
    GO:0004674    protein serine/threonine kinase activity    Catalysis of the reactions: ATP + protein serine = ADP + protein serine phosphate, and ATP + protein threonine = ADP + protein threonine phosphate.
    GO:0016740    transferase activity    Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2.
biological process
    GO:0006915    apoptotic process    A programmed cell death process which begins when a cell receives an internal (e.g. DNA damage) or external signal (e.g. an extracellular death ligand), and proceeds through a series of biochemical events (signaling pathway phase) which trigger an execution phase. The execution phase is the last step of an apoptotic process, and is typically characterized by rounding-up of the cell, retraction of pseudopodes, reduction of cellular volume (pyknosis), chromatin condensation, nuclear fragmentation (karyorrhexis), plasma membrane blebbing and fragmentation of the cell into apoptotic bodies. When the execution phase is completed, the cell has died.
    GO:0007049    cell cycle    The progression of biochemical and morphological phases and events that occur in a cell during successive cell replication or nuclear replication events. Canonically, the cell cycle comprises the replication and segregation of genetic material followed by the division of the cell, but in endocycles or syncytial cells nuclear replication or nuclear division may not be followed by cell division.
    GO:0051301    cell division    The process resulting in division and partitioning of components of a cell to form more cells; may or may not be accompanied by the physical separation of a cell into distinct, individually membrane-bounded daughter cells.
    GO:0008283    cell proliferation    The multiplication or reproduction of cells, resulting in the expansion of a cell population.
    GO:0007059    chromosome segregation    The process in which genetic material, in the form of chromosomes, is organized into specific structures and then physically separated and apportioned to two or more sets. In eukaryotes, chromosome segregation begins with the condensation of chromosomes, includes chromosome separation, and ends when chromosomes have completed movement to the spindle poles.
    GO:0007093    mitotic cell cycle checkpoint    A cell cycle checkpoint that ensures accurate chromosome replication and segregation by preventing progression through a mitotic cell cycle until conditions are suitable for the cell to proceed to the next stage.
    GO:0007094    mitotic spindle assembly checkpoint    A cell cycle checkpoint that delays the metaphase/anaphase transition of a mitotic nuclear division until the spindle is correctly assembled and chromosomes are attached to the spindle.
    GO:0016310    phosphorylation    The process of introducing a phosphate group into a molecule, usually with the formation of a phosphoric ester, a phosphoric anhydride or a phosphoric amide.
    GO:0006468    protein phosphorylation    The process of introducing a phosphate group on to a protein.
    GO:0051983    regulation of chromosome segregation    Any process that modulates the frequency, rate or extent of chromosome segregation, the process in which genetic material, in the form of chromosomes, is organized and then physically separated and apportioned to two or more sets.
    GO:0007063    regulation of sister chromatid cohesion    Any process that modulates the frequency, rate or extent of sister chromatid cohesion.
    GO:0007062    sister chromatid cohesion    The cell cycle process in which the sister chromatids of a replicated chromosome become tethered to each other.
    GO:0071173    spindle assembly checkpoint    A cell cycle checkpoint that delays the metaphase/anaphase transition until the spindle is correctly assembled and chromosomes are attached to the spindle.
    GO:0016032    viral process    A multi-organism process in which a virus is a participant. The other participant is the host. Includes infection of a host cell, replication of the viral genome, and assembly of progeny virus particles. In some cases the viral genetic material may integrate into the host genome and only subsequently, under particular circumstances, 'complete' its life cycle.
cellular component
    GO:0005694    chromosome    A structure composed of a very long molecule of DNA and associated proteins (e.g. histones) that carries hereditary information.
    GO:0000775    chromosome, centromeric region    The region of a chromosome that includes the centromeric DNA and associated proteins. In monocentric chromosomes, this region corresponds to a single area of the chromosome, whereas in holocentric chromosomes, it is evenly distributed along the chromosome.
    GO:0000777    condensed chromosome kinetochore    A multisubunit complex that is located at the centromeric region of a condensed chromosome and provides an attachment point for the spindle microtubules.
    GO:0000942    condensed nuclear chromosome outer kinetochore    The region of a condensed nuclear chromosome kinetochore most external to centromeric DNA; this outer region mediates kinetochore-microtubule interactions.
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    GO:0005829    cytosol    The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
    GO:0000776    kinetochore    A multisubunit complex that is located at the centromeric region of DNA and provides an attachment point for the spindle microtubules.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005654    nucleoplasm    That part of the nuclear content other than the chromosomes or the nucleolus.
    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,F,G,H   (KNL1_HUMAN | Q8NG31)
molecular function
    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:0034080    CENP-A containing nucleosome assembly    The formation of nucleosomes containing the histone H3 variant CENP-A to form centromeric chromatin. This specialised chromatin occurs at centromeric region in point centromeres, and the central core in modular centromeres.
    GO:0001675    acrosome assembly    The formation of the acrosome from the spermatid Golgi.
    GO:0008608    attachment of spindle microtubules to kinetochore    The process in which spindle microtubules become physically associated with the proteins making up the kinetochore complex.
    GO:0007049    cell cycle    The progression of biochemical and morphological phases and events that occur in a cell during successive cell replication or nuclear replication events. Canonically, the cell cycle comprises the replication and segregation of genetic material followed by the division of the cell, but in endocycles or syncytial cells nuclear replication or nuclear division may not be followed by cell division.
    GO:0051301    cell division    The process resulting in division and partitioning of components of a cell to form more cells; may or may not be accompanied by the physical separation of a cell into distinct, individually membrane-bounded daughter cells.
    GO:0007059    chromosome segregation    The process in which genetic material, in the form of chromosomes, is organized into specific structures and then physically separated and apportioned to two or more sets. In eukaryotes, chromosome segregation begins with the condensation of chromosomes, includes chromosome separation, and ends when chromosomes have completed movement to the spindle poles.
    GO:0010923    negative regulation of phosphatase activity    Any process that decreases the rate or frequency of phosphatase activity. Phosphatases catalyze the hydrolysis of phosphoric monoesters, releasing inorganic phosphate.
    GO:0034501    protein localization to kinetochore    Any process in which a protein is transported to, or maintained at, the kinetochore.
    GO:0007062    sister chromatid cohesion    The cell cycle process in which the sister chromatids of a replicated chromosome become tethered to each other.
    GO:0071173    spindle assembly checkpoint    A cell cycle checkpoint that delays the metaphase/anaphase transition until the spindle is correctly assembled and chromosomes are attached to the spindle.
cellular component
    GO:0001669    acrosomal vesicle    A structure in the head of a spermatozoon that contains acid hydrolases, and is concerned with the breakdown of the outer membrane of the ovum during fertilization. It lies just beneath the plasma membrane and is derived from the lysosome.
    GO:0005694    chromosome    A structure composed of a very long molecule of DNA and associated proteins (e.g. histones) that carries hereditary information.
    GO:0000775    chromosome, centromeric region    The region of a chromosome that includes the centromeric DNA and associated proteins. In monocentric chromosomes, this region corresponds to a single area of the chromosome, whereas in holocentric chromosomes, it is evenly distributed along the chromosome.
    GO:0000777    condensed chromosome kinetochore    A multisubunit complex that is located at the centromeric region of a condensed chromosome and provides an attachment point for the spindle microtubules.
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    GO:0005829    cytosol    The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
    GO:0070062    extracellular exosome    A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.
    GO:0000776    kinetochore    A multisubunit complex that is located at the centromeric region of DNA and provides an attachment point for the spindle microtubules.
    GO:0005654    nucleoplasm    That part of the nuclear content other than the chromosomes or the nucleolus.
    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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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

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        BUB1_HUMAN | O436832lah 4qpm 4r8q 5dmz
        KNL1_HUMAN | Q8NG313si5 4nf9 4nfa

(-) Related Entries Specified in the PDB File

(no "Related Entries Specified in the PDB File" available for 4A1G)