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Title :   P13SUC1 IN A STRAND-EXCHANGED DIMER

Authors :   N. Khazanovich, K. S. Bateman, M. Chernaia, M. Michalak, M. N. G. James

Date :   08 Dec 95 (Deposition) - 03 Apr 96 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.95

Chains :   Asym. Unit : A
Biol. Unit 1: A  (2x)

Keywords :   Cell Cycle, Domain Swapping, Strand-Exchanged Dimer, Binding Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   N. Khazanovich, K. Bateman, M. Chernaia, M. Michalak, M. James
Crystal Structure Of The Yeast Cell-Cycle Control Protein, P13Suc1, In A Strand-Exchanged Dimer.
Structure V. 4 299 1996
PubMed-ID: 8805536 | Reference-DOI: 10.1016/S0969-2126(96)00034-2
(for further references see the PDB file header)

Molecule 1 - P13SUC1
	Cell Line	:	BL21
	Chains	:	A
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI BL21(DE3)
	Expression System Plasmid	:	BL21
	Expression System Strain	:	BL21 (DE3)
	Expression System Taxid	:	469008
	Organism Common	:	FISSION YEAST
	Organism Scientific	:	SCHIZOSACCHAROMYCES POMBE
	Organism Taxid	:	4896
	Synonym	:	P13

		1
Asymmetric Unit	:	A
Biological Unit 1 (2x)	:	A

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (1, 1)

No.	Name	Count	Type	Full Name
1	CPS	1	Ligand/Ion	3-[(3-CHOLAMIDOPROPYL)DIMETHYLAMMONIO]-1-PROPANESULFONATE

Biological Unit 1 (1, 2)

No.	Name	Count	Type	Full Name
1	CPS	2	Ligand/Ion	3-[(3-CHOLAMIDOPROPYL)DIMETHYLAMMONIO]-1-PROPANESULFONATE

Asymmetric Unit (1, 1)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	TYR A:31 , HIS A:40 , TYR A:85 , HIS A:88	BINDING SITE FOR RESIDUE CPS A 1

(no "SS Bond" information available for 1PUC)

(no "Cis Peptide Bond" information available for 1PUC)

(no "SAP(SNP)/Variant" information available for 1PUC)

Asymmetric Unit (2, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	CKS_1	PS00944	Cyclin-dependent kinases regulatory subunits signature 1.	CKS1_SCHPO	27-45	1	A:27-45
2	CKS_2	PS00945	Cyclin-dependent kinases regulatory subunits signature 2.	CKS1_SCHPO	88-98	1	A:88-98

Biological Unit 1 (2, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	CKS_1	PS00944	Cyclin-dependent kinases regulatory subunits signature 1.	CKS1_SCHPO	27-45	2	A:27-45
2	CKS_2	PS00945	Cyclin-dependent kinases regulatory subunits signature 2.	CKS1_SCHPO	88-98	2	A:88-98

(no "Exon" information available for 1PUC)

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
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Chain A from PDB  Type:PROTEIN  Length:101
 aligned with CKS1_SCHPO | P08463 from UniProtKB/Swiss-Prot  Length:113

    Alignment length:101
                                    11        21        31        41        51        61        71        81        91       101 
           CKS1_SCHPO     2 SKSGVPRLLTASERERLEPFIDQIHYSPRYADDEYEYRHVMLPKAMLKAIPTDYFNPETGTLRILQEEEWRGLGITQSLGWEMYEVHVPEPHILLFKREKD 102
               SCOP domains d1puca_ A: suc1                                                                                       SCOP domains
               CATH domains 1pucA00 A:2-102 Cyclin-Dependent Kinase Subunit Type 2                                                CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..........hhhhhhhhhhhhh.ee...ee....ee..ee..hhhhhh..hhh............hhhhhhh............................ Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------CKS_1  PDB: A:27-45------------------------------------------CKS_2      ---- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------- Transcript
                 1puc A   2 SKSGVPRLLTASERERLEPFIDQIHYSPRYADDEYEYRHVMLPKAMLKAIPTDYFNPETGTLRILQEEEWRGLGITQSLGWEMYEVHVPEPHILLFKREKD 102
                                    11        21        31        41        51        61        71        81        91       101

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	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 '\|'

Asymmetric Unit

Classes(

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Folds(

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Superfamilies( (-)

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Families(

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Protein Domains( (-)

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Organisms( (-)

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Class: Alpha and beta proteins (a+b) (23004)

Fold: Cell cycle regulatory proteins (11)

Superfamily: Cell cycle regulatory proteins (11)

Family: Cell cycle regulatory proteins (11)

Protein domain: suc1 (2)

Fission yeast (Schizosaccharomyces pombe) [TaxId: 4896] (2)

d1puca_

Asymmetric Unit

Classes(

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Architectures( (-)

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Topologies( (-)

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Homologous Superfamilies( (-)

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Organisms( (-)

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Class: Alpha Beta (26913)

Architecture: 2-Layer Sandwich (8480)

Topology: Cyclin-Dependent Kinase Subunit Type 2 (9)

Homologous Superfamily: Cyclin-Dependent Kinase Subunit Type 2 (9)

Fission yeast (Schizosaccharomyces pombe) (2)

1pucA00

A:2-102

(no "Pfam Domain" information available for 1PUC)

Asymmetric Unit(hide GO term definitions)

Chain A (CKS1_SCHPO | P08463)

molecular function
	GO:0061575	cyclin-dependent protein serine/threonine kinase activator activity	Binds to and increases the activity of a cyclin-dependent protein serine/threonine kinase.
	GO:0016538	cyclin-dependent protein serine/threonine kinase regulator activity	Modulates the activity of a cyclin-dependent protein serine/threonine kinase, enzymes of the protein kinase family that are regulated through association with cyclins and other proteins.
	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:0032403	protein complex binding	Interacting selectively and non-covalently with any protein complex (a complex of two or more proteins that may include other nonprotein molecules).
	GO:0008270	zinc ion binding	Interacting selectively and non-covalently with zinc (Zn) ions.
biological process
	GO:0032147	activation of protein kinase activity	Any process that initiates the activity of an inactive protein kinase.
	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:0045737	positive regulation of cyclin-dependent protein serine/threonine kinase activity	Any process that activates or increases the frequency, rate or extent of CDK activity.
	GO:0000079	regulation of cyclin-dependent protein serine/threonine kinase activity	Any process that modulates the frequency, rate or extent of cyclin-dependent protein serine/threonine kinase activity.
cellular component
	GO:0000307	cyclin-dependent protein kinase holoenzyme complex	Cyclin-dependent protein kinases (CDKs) are enzyme complexes that contain a kinase catalytic subunit associated with a regulatory cyclin partner.
	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: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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