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Title :   CKSHS1: HUMAN CYCLIN DEPENDENT KINASE SUBUNIT, TYPE 1 IN COMPLEX WITH PHOSPHATE

Authors :   Y. Bourne, A. S. Arvai, J. A. Tainer

Date :   22 Nov 95 (Deposition) - 08 Mar 96 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   3.20

Chains :   Asym./Biol. Unit : A,B

Keywords :   Cell Division (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   A. S. Arvai, Y. Bourne, M. J. Hickey, J. A. Tainer
Crystal Structure Of The Human Cell Cycle Protein Ckshs1: Single Domain Fold With Similarity To Kinase N-Lobe Domain.
J. Mol. Biol. V. 249 835 1995
PubMed-ID: 7791211 | Reference-DOI: 10.1006/JMBI.1995.0341
(for further references see the PDB file header)

Molecule 1 - CYCLIN DEPENDENT KINASE SUBUNIT, TYPE 1
	Chains	:	A, B
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PBR322
	Expression System Strain	:	BL-ZI
	Expression System Taxid	:	562
	Organism Common	:	HUMAN
	Organism Scientific	:	HOMO SAPIENS
	Organism Taxid	:	9606
	Synonym	:	CKSHS1

		1	2
Asymmetric/Biological Unit	:	A	B

Summary Information (see also Sequences/Alignments below)

Asymmetric/Biological Unit (1, 2)

No.	Name	Count	Type	Full Name
1	PO4	2	Ligand/Ion	PHOSPHATE ION

Asymmetric Unit (4, 4)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	PO4 A:400 , LYS B:11 , ARG B:20 , GLN B:50 , SER B:51 , TRP B:54 , HOH B:965 , HOH B:966	BINDING SITE FOR RESIDUE PO4 B 300
2	AC2	SOFTWARE	LYS A:11 , ARG A:20 , GLN A:50 , SER A:51 , TRP A:54 , ARG A:71 , HOH A:907 , PO4 B:300 , HOH B:966	BINDING SITE FOR RESIDUE PO4 A 400
3	POA	UNKNOWN	LYS A:11 , ARG A:20 , SER A:51 , TRP A:54 , ARG A:71	NULL
4	POB	UNKNOWN	LYS B:11 , ARG B:20 , SER B:51 , TRP B:54 , ARG B:71	NULL

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

Asymmetric/Biological Unit

No.	Residues
1	Lys A:76	-	Pro A:77

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

Asymmetric/Biological Unit (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_HUMAN	8-26	2	A:8-26 B:8-26
2	CKS_2	PS00945	Cyclin-dependent kinases regulatory subunits signature 2.	CKS1_HUMAN	60-70	2	A:60-70 B:60-70

Asymmetric/Biological Unit (3, 6)

	ENSEMBL					UniProtKB			PDB
No.	Transcript ID	Exon	Exon ID	Genome Location	Length	ID	Location	Length	Count	Location	Length
1.1c	ENST00000308987	1c	ENSE00001200321	chr1:154947175-154947280	106	CKS1_HUMAN	1-20	20	2	A:2-20 B:2-20 (gaps)	19 19
1.4b	ENST00000308987	4b	ENSE00001200312	chr1:154950463-154950590	128	CKS1_HUMAN	20-63	44	2	A:20-63 B:20-63	44 44
1.5f	ENST00000308987	5f	ENSE00001848352	chr1:154951201-154951725	525	CKS1_HUMAN	63-79	17	2	A:63-77 B:63-76	15 14

Asymmetric/Biological 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:76
 aligned with CKS1_HUMAN | P61024 from UniProtKB/Swiss-Prot  Length:79

    Alignment length:76
                                    11        21        31        41        51        61        71      
            CKS1_HUMAN    2 SHKQIYYSDKYDDEEFEYRHVMLPKDIAKLVPKTHLMSESEWRNLGVQQSQGWVHYMIHEPEPHILLFRRPLPKKP 77
               SCOP domains d1dksa_ A: CksHs1                                                            SCOP domains
               CATH domains 1dksA00 A:2-77 Cyclin-Dependent Kinase Subunit Type 2                        CATH domains
               Pfam domains ---------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeeeeeeeeeeeeeeeeeeehhhhhhh........hhhhhhh.......eeeeeee....eeeeeee...... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------CKS_1  PDB: A:8-26 ---------------------------------CKS_2      ------- PROSITE
           Transcript 1 (1) Exon 1.1c          ------------------------------------------Exon 1.5f       Transcript 1 (1)
           Transcript 1 (2) ------------------Exon 1.4b  PDB: A:20-63 UniProt: 20-63      -------------- Transcript 1 (2)
                  1dks A  2 SHKQIYYSDKYDDEEFEYRHVMLPKDIAKLVPKTHLMSESEWRNLGVQQSQGWVHYMIHEPEPHILLFRRPLPKKP 77
                                    11        21        31        41        51        61        71

Chain B from PDB  Type:PROTEIN  Length:73
 aligned with CKS1_HUMAN | P61024 from UniProtKB/Swiss-Prot  Length:79

    Alignment length:73
                                    13        23        33        43        53        63        73   
            CKS1_HUMAN    4 KQIYYSDKYDDEEFEYRHVMLPKDIAKLVPKTHLMSESEWRNLGVQQSQGWVHYMIHEPEPHILLFRRPLPKK 76
               SCOP domains d1dksb_ B: CksHs1                                                         SCOP domains
               CATH domains 1dksB00 B:2-76 Cyclin-Dependent Kinase Subunit Type 2                     CATH domains
               Pfam domains ------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeeeeeeeeeeeeeeeeehhhhhhh........hhhhhhh.......eeeeeee....eeeeeee..... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----CKS_1  PDB: B:8-26 ---------------------------------CKS_2      ------ PROSITE
           Transcript 1 (1) Exon 1.1c        ------------------------------------------Exon 1.5f      Transcript 1 (1)
           Transcript 1 (2) ----------------Exon 1.4b  PDB: B:20-63 UniProt: 20-63      ------------- Transcript 1 (2)
                  1dks B  2 KQIYYSDKYDDEEFEYRHVMLPKDIAKLVPKTHLMSESEWRNLGVQQSQGWVHYMIHEPEPHILLFRRPLPKK 76
                            ||      13        23        33        43        53        63        73   
                            2|                                                                       
                             5

Legend:		→ Mismatch	(orange background)
	-	→ Gap	(green background, '-', border residues have a numbering label)
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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/Biological Unit

Classes(

)

Folds(

)

Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

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: CksHs1 (5)

Human (Homo sapiens) [TaxId: 9606] (5)

1a	d1dksa_	A:
1b	d1dksb_	B:

Asymmetric/Biological Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

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)

Human (Homo sapiens) (6)

1a	1dksA00	A:2-77
1b	1dksB00	B:2-76

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

Asymmetric/Biological Unit(hide GO term definitions)

Chain A,B (CKS1_HUMAN | P61024)

molecular function
	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).
biological process
	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: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:0005654	nucleoplasm	That part of the nuclear content other than the chromosomes or the nucleolus.

Asymmetric/Biological Unit
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		Lys A:76 - Pro A:77	[ RasMol ]

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	CKS1_HUMAN \| P61024	:	1buh 1dkt 2ass 2ast 4yc6

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Description

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