2ITD - JenaLib

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Title :   POTASSIUM CHANNEL KCSA-FAB COMPLEX IN BARIUM CHLORIDE

Authors :   S. W. Lockless, M. Zhou, R. Mackinnon

Date :   19 Oct 06 (Deposition) - 15 May 07 (Release) - 16 Nov 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.70

Chains :   Asym. Unit : A,B,C
Biol. Unit 1: A,B,C  (4x)

Keywords :   Voltage-Gated Channel, Transmembrane, Ionic Channel, Ion Transport, K Channel, Protein-Antibody Fab Complex, Membrane Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   S. W. Lockless, M. Zhou, R. Mackinnon
Structural And Thermodynamic Properties Of Selective Ion Binding In A K(+) Channel.
Plos Biol. V. 5 E121 2007
PubMed-ID: 17472437 | Reference-DOI: 10.1371/JOURNAL.PBIO.0050121

Molecule 1 - ANTIBODY FAB FRAGMENT HEAVY CHAIN
	Chains	:	A
	Organism Common	:	HOUSE MOUSE
	Organism Scientific	:	MUS MUSCULUS
	Organism Taxid	:	10090

Molecule 2 - ANTIBODY FAB FRAGMENT LIGHT CHAIN
	Chains	:	B
	Organism Common	:	HOUSE MOUSE
	Organism Scientific	:	MUS MUSCULUS
	Organism Taxid	:	10090

Molecule 3 - VOLTAGE-GATED POTASSIUM CHANNEL
	Chains	:	C
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI BL21(DE3)
	Expression System Plasmid	:	PQE-60
	Expression System Strain	:	BL-21(DE3)
	Expression System Taxid	:	469008
	Expression System Vector Type	:	PLASMID
	Fragment	:	RESIDUES 1-124
	Gene	:	KCSA, SKC1
	Mutation	:	YES
	Organism Scientific	:	STREPTOMYCES LIVIDANS
	Organism Taxid	:	1916

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

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (1, 2)

No.	Name	Count	Type	Full Name
1	BA	2	Ligand/Ion	BARIUM ION

Biological Unit 1 (0, 0)

No.	Name	Count	Type	Full Name
1	BA	-1	Ligand/Ion	BARIUM ION

Asymmetric Unit (2, 2)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	THR C:75	BINDING SITE FOR RESIDUE BA C 125
2	AC2	SOFTWARE	GLY C:77	BINDING SITE FOR RESIDUE BA C 126

Asymmetric Unit

No.	Residues
1	A:22	-	A:96
2	A:145	-	A:200
3	B:23	-	B:88
4	B:134	-	B:194

Asymmetric Unit

No.	Residues
1	Phe A:151	-	Pro A:152
2	Glu A:153	-	Pro A:154
3	Trp A:193	-	Pro A:194
4	Ser B:7	-	Pro B:8
5	Trp B:94	-	Pro B:95
6	Tyr B:140	-	Pro B:141

(no "SAP(SNP)/Variant" information available for 2ITD)

(no "PROSITE Motif" information available for 2ITD)

(no "Exon" information available for 2ITD)

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:219
                                                                                                                                                                                                                                                           
               SCOP domains d2itda1 A:1-118 Immunoglobulin heavy chain variable domain, VH                                                        d2itda2 A:119-219 Immunoglobulin heavy chain gamma constant domain 1, CH1-gamma                       SCOP domains
               CATH domains 2itdA01 A:1-118 Immunoglobulins                                                                                       2itdA02 A:119-217 Immunoglobulins                                                                  -- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...ee...eeee.....eeeeeee........eeeeeee......eeeeee......eee.......eeeeee....eeeeee...hhhhheeeeeeee.....eeee...eeeee........eeeee..........eeeeeeeeeee.....eeee........eee...ee....eeeeeeeeee.hhh......eeee................ Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2itd A   1 QVQLQQPGAELVKPGASVKLSCKASGYTFTSDWIHWVKQRPGHGLEWIGEIIPSYGRANYNEKIQKKATLTADKSSSTAFMQLSSLTSEDSAVYYCARERGDGYFAVWGAGTTVTVSSAKTTPPSVYPLAPGSAAQTNSMVTLGCLVKGYFPEPVTVTWNSGSLSSGVHTFPAVLQSDLYTLSSSVTVPSSSWPSETVTCNVAHPASSTKVDKKIVPRD 219
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210

Chain B from PDB  Type:PROTEIN  Length:212
                                                                                                                                                                                                                                                    
               SCOP domains d2itdb1 B:1-107 Immunoglobulin light chain kappa variable domain, VL-kappa                                 d2itdb2 B:108-212 Immunoglobulin light chain kappa constant domain, CL-kappa                              SCOP domains
               CATH domains 2itdB01 B:1-108 Immunoglobulins                                                                             2itdB02 B:109-211 Immunoglobulins                                                                      - CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...ee....eeee.....eeeeeee.......eeeeee......eeeee...ee.......eeeeee..eeeeee...hhhhh.eeeeee......ee...eeeee.......eeeee..hhhhhhh.eeeeeeeeeee....eeeeeee..eee...eeeee.........eeeeeeeeeehhhhhh..eeeeeeee......eeeeee.. Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2itd B   1 DILLTQSPAILSVSPGERVSFSCRASQSIGTDIHWYQQRTNGSPRLLIKYASESISGIPSRFSGSGSGTDFTLSINSVESEDIANYYCQQSNRWPFTFGSGTKLEIKRADAAPTVSIFPPSSEQLTSGGASVVCFLNNFYPKDINVKWKIDGSERQNGVLNSWTDQDSKDSTYSMSSTLTLTKDEYERHNSYTCEATHKTSTSPIVKSFNRN 212
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210

Chain C from PDB  Type:PROTEIN  Length:103
 aligned with KCSA_STRLI | P0A334 from UniProtKB/Swiss-Prot  Length:160

    Alignment length:103
                                    31        41        51        61        71        81        91       101       111       121   
           KCSA_STRLI    22 SALHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRLVAVVVMVAGITSFGLVTAALATWFVGREQERRGH 124
               SCOP domains d2itdc_ C: Potassium channel protein                                                                    SCOP domains
               CATH domains 2itdC00 C:22-124  [code=1.10.287.70, no name defined]                                                   CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhhhhhhhhhhh........hhhhhhhhhhhhhh..........hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------- Transcript
                 2itd C  22 SALHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRCVAVVVMVAGITSFGLVTAALATWFVGREQERRGH 124
                                    31        41        51        61        71        81        91       101       111       121

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(

)

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)

House mouse (Mus musculus) (24)

2itdC00

C:22-124

Class: Mainly Beta (13760)

Architecture: Sandwich (5577)

Topology: Immunoglobulin-like (3897)

Homologous Superfamily: Immunoglobulins (2282)

House mouse (Mus musculus) (616)

2a	2itdB02	B:109-211
2b	2itdA02	A:119-217
2c	2itdA01	A:1-118
2d	2itdB01	B:1-108

(no "Pfam Domain" information available for 2ITD)

Asymmetric Unit(hide GO term definitions)

Chain C (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.

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	Cis Peptide Bonds
		Glu A:153 - Pro A:154	[ RasMol ]
		Phe A:151 - Pro A:152	[ RasMol ]
		Ser B:7 - Pro B:8	[ RasMol ]
		Trp A:193 - Pro A:194	[ RasMol ]
		Trp B:94 - Pro B:95	[ RasMol ]
		Tyr B:140 - Pro B:141	[ RasMol ]

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		Biological Unit 1	[ Jena3D ]

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