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Title :   KCSA POTASSIUM CHANNEL WITH TBA (TETRABUTYLAMMONIUM) AND RUBIDIUM

Authors :   J. H. Morais-Cabral, Y. Zhou, R. Mackinnon

Date :   30 Aug 01 (Deposition) - 05 Dec 01 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.80

Chains :   Asym. Unit : A,B,C,D
Biol. Unit 1: A,B,C,D  (1x)
Biol. Unit 2: A,B,C,D  (2x)

Keywords :   Membrane Protein, Potassium Channel, Metal Transport (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   J. H. Morais-Cabral, Y. Zhou, R. Mackinnon
Energetic Optimization Of Ion Conduction Rate By The K+ Selectivity Filter.
Nature V. 414 37 2001
PubMed-ID: 11689935 | Reference-DOI: 10.1038/35102000
(for further references see the PDB file header)

Molecule 1 - VOLTAGE-GATED POTASSIUM CHANNEL
	Chains	:	A, B, C, D
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PQE-60
	Expression System Strain	:	XL1-BLUE
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Fragment	:	RESIDUES 1-125
	Mutation	:	YES
	Organism Scientific	:	STREPTOMYCES LIVIDANS
	Organism Taxid	:	1916

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

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (2, 4)

No.	Name	Count	Type	Full Name
1	RB	3	Ligand/Ion	RUBIDIUM ION
2	TBA	1	Ligand/Ion	TETRABUTYLAMMONIUM ION

Biological Unit 1 (1, 1)

No.	Name	Count	Type	Full Name
1	RB	-1	Ligand/Ion	RUBIDIUM ION
2	TBA	1	Ligand/Ion	TETRABUTYLAMMONIUM ION

Biological Unit 2 (1, 2)

No.	Name	Count	Type	Full Name
1	RB	-1	Ligand/Ion	RUBIDIUM ION
2	TBA	2	Ligand/Ion	TETRABUTYLAMMONIUM ION

Asymmetric Unit (4, 4)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	GLY A:77 , TYR A:78 , GLY B:77 , TYR B:78 , GLY C:77 , TYR C:78 , GLY D:77 , TYR D:78 , HOH D:806	BINDING SITE FOR RESIDUE RB A 126
2	AC2	SOFTWARE	THR A:75 , VAL A:76 , RB A:128 , THR B:75 , VAL B:76 , THR C:75 , VAL C:76 , THR D:75 , VAL D:76 , HOH D:806	BINDING SITE FOR RESIDUE RB A 127
3	AC3	SOFTWARE	THR A:75 , RB A:127 , THR B:75 , THR C:75 , THR D:75	BINDING SITE FOR RESIDUE RB A 128
4	AC4	SOFTWARE	ILE A:100	BINDING SITE FOR RESIDUE TBA A 129

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

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

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

(no "PROSITE Motif" information available for 1JVM)

(no "Exon" information available for 1JVM)

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:97
 aligned with KCSA_STRLI | P0A334 from UniProtKB/Swiss-Prot  Length:160

    Alignment length:97
                                    33        43        53        63        73        83        93       103       113       
           KCSA_STRLI    24 LHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRLVAVVVMVAGITSFGLVTAALATWFVGREQE 120
               SCOP domains d1jvma_ A: Potassium channel protein                                                              SCOP domains
               CATH domains 1jvmA00 A:24-120  [code=1.10.287.70, no name defined]                                             CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhhhhhhhhh........hhhhhhhhhhhhhh............hhhhhhhhhhhhhhhhhhhhhhhhhhhhh..... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------- Transcript
                 1jvm A  24 LHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRCVAVVVMVAGITSFGLVTAALATWFVGREQE 120
                                    33        43        53        63        73        83        93       103       113

Chain B from PDB  Type:PROTEIN  Length:100
 aligned with KCSA_STRLI | P0A334 from UniProtKB/Swiss-Prot  Length:160

    Alignment length:100
                                    33        43        53        63        73        83        93       103       113       123
           KCSA_STRLI    24 LHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRLVAVVVMVAGITSFGLVTAALATWFVGREQERRG 123
               SCOP domains d1jvmb_ B: Potassium channel protein                                                                 SCOP domains
               CATH domains 1jvmB00 B:24-123  [code=1.10.287.70, no name defined]                                                CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhhhhhhhhh........hhhhhhhhhhhhhh............hhhhhhhhhhhhhhhhhhhhhhhhhhhhh........ Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------- Transcript
                 1jvm B  24 LHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRCVAVVVMVAGITSFGLVTAALATWFVGREQERRG 123
                                    33        43        53        63        73        83        93       103       113       123

Chain C from PDB  Type:PROTEIN  Length:97
 aligned with KCSA_STRLI | P0A334 from UniProtKB/Swiss-Prot  Length:160

    Alignment length:97
                                    33        43        53        63        73        83        93       103       113       
           KCSA_STRLI    24 LHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRLVAVVVMVAGITSFGLVTAALATWFVGREQE 120
               SCOP domains d1jvmc_ C: Potassium channel protein                                                              SCOP domains
               CATH domains 1jvmC00 C:24-120  [code=1.10.287.70, no name defined]                                             CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhhhhhhhhh........hhhhhhhhhhhhhh............hhhhhhhhhhhhhhhhhhhhhhhhhhhhh..... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------- Transcript
                 1jvm C  24 LHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRCVAVVVMVAGITSFGLVTAALATWFVGREQE 120
                                    33        43        53        63        73        83        93       103       113

Chain D from PDB  Type:PROTEIN  Length:100
 aligned with KCSA_STRLI | P0A334 from UniProtKB/Swiss-Prot  Length:160

    Alignment length:100
                                    33        43        53        63        73        83        93       103       113       123
           KCSA_STRLI    24 LHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRLVAVVVMVAGITSFGLVTAALATWFVGREQERRG 123
               SCOP domains d1jvmd_ D: Potassium channel protein                                                                 SCOP domains
               CATH domains 1jvmD00 D:24-123  [code=1.10.287.70, no name defined]                                                CATH domains
           Pfam domains (1) ---------Ion_trans_2-1jvmD01 D:33-116                                                        ------- Pfam domains (1)
           Pfam domains (2) ---------Ion_trans_2-1jvmD02 D:33-116                                                        ------- Pfam domains (2)
           Pfam domains (3) ---------Ion_trans_2-1jvmD03 D:33-116                                                        ------- Pfam domains (3)
           Pfam domains (4) ---------Ion_trans_2-1jvmD04 D:33-116                                                        ------- Pfam domains (4)
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhhhhhhhhh........hhhhhhhhhhhhhh............hhhhhhhhhhhhhhhhhhhhhhhhhhhhh........ Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------- Transcript
                 1jvm D  24 LHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRCVAVVVMVAGITSFGLVTAALATWFVGREQERRG 123
                                    33        43        53        63        73        83        93       103       113       123

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 '\|'

Asymmetric Unit

Classes(

)

Folds(

)

Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

Class: Membrane and cell surface proteins and peptides (2046)

Fold: Voltage-gated potassium channels (62)

Superfamily: Voltage-gated potassium channels (62)

Family: Voltage-gated potassium channels (61)

Protein domain: Potassium channel protein (37)

Streptomyces coelicolor [TaxId: 1902] (17)

1a	d1jvma_	A:
1b	d1jvmb_	B:
1c	d1jvmc_	C:
1d	d1jvmd_	D:

Asymmetric Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Mainly Alpha (13335)

Architecture: Orthogonal Bundle (10391)

Topology: Helix Hairpins (718)

Homologous Superfamily: [code=1.10.287.70, no name defined] (106)

Streptomyces lividans. Organism_taxid: 1916. (3)

1a	1jvmA00	A:24-120
1b	1jvmB00	B:24-123
1c	1jvmD00	D:24-123
1d	1jvmC00	C:24-120

Asymmetric Unit

Clans(

)

Families(

)

Organisms( (-)

)

Clan: Ion_channel (150)

Family: Ion_trans_2 (35)

Streptomyces lividans (16)

1a	Ion_trans_2-1jvmD01	D:33-116
1b	Ion_trans_2-1jvmD02	D:33-116
1c	Ion_trans_2-1jvmD03	D:33-116
1d	Ion_trans_2-1jvmD04	D:33-116

Asymmetric Unit(hide GO term definitions)

Chain A,B,C,D (KCSA_STRLI | P0A334)

molecular function
	GO:0042802	identical protein binding	Interacting selectively and non-covalently with an identical protein or proteins.
	GO:0005249	voltage-gated potassium channel activity	Enables the transmembrane transfer of a potassium ion by a voltage-gated channel. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded.
biological process
	GO:0006811	ion transport	The directed movement of charged atoms or small charged molecules into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
	GO:0071805	potassium ion transmembrane transport	A process in which a potassium ion is transported from one side of a membrane to the other.
	GO:0006813	potassium ion transport	The directed movement of potassium ions (K+) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
	GO:0006810	transport	The directed movement of substances (such as macromolecules, small molecules, ions) or cellular components (such as complexes and organelles) into, out of or within a cell, or between cells, or within a multicellular organism by means of some agent such as a transporter, pore or motor protein.
cellular component
	GO:0016021	integral component of membrane	The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
	GO:0016020	membrane	A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
	GO:0005886	plasma membrane	The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
	GO:0008076	voltage-gated potassium channel complex	A protein complex that forms a transmembrane channel through which potassium ions may cross a cell membrane in response to changes in membrane potential.

Asymmetric Unit
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1bl8	POTASSIUM CHANNEL (KCSA) FROM STREPTOMYCES LIVIDANS
1j95	KCSA POTASSIUM CHANNEL WITH TBA (TETRABUTYLAMMONIUM) AND POTASSIUM

Description

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