2C9W - JenaLib

Asym./Biol. Unit - manually (Jmol Viewer)

Asym./Biol. Unit (Jmol Viewer)

Asym./Biol. Unit - sites (Jmol Viewer)

Title :   CRYSTAL STRUCTURE OF SOCS-2 IN COMPLEX WITH ELONGIN-B AND ELONGIN-C AT 1.9A RESOLUTION

Authors :   J. E. Debreczeni, A. Bullock, A. Amos, P. Savitsky, A. Barr, N. Burgess, M. Sundstrom, J. Weigelt, C. Arrowsmith, A. Edwards, S. Knapp

Date :   14 Dec 05 (Deposition) - 22 Feb 06 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.90

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

Keywords :   Growth Regulation, Sh2 Domain, Signal Transduction Inhibitor, Nuclear Protein, Transcription, Transcription Regulation, Ubl Conjugation Pathway (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   A. N. Bullock, J. E. Debreczeni, A. M. Edwards, M. Sundstrom, S. Knapp
Crystal Structure Of The Socs2-Elongin C-Elongin B Complex Defines A Prototypical Socs Box Ubiquitin Ligase.
Proc. Natl. Acad. Sci. Usa V. 103 7637 2006
PubMed-ID: 16675548 | Reference-DOI: 10.1073/PNAS.0601638103

Molecule 1 - SUPPRESSOR OF CYTOKINE SIGNALING 2
	Chains	:	A
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Cell Line	:	BL21(DE3)-R3
	Expression System Taxid	:	562
	Expression System Vector	:	P11
	Organism Common	:	HUMAN
	Organism Scientific	:	HOMO SAPIENS
	Organism Taxid	:	9606
	Synonym	:	HUMAN SOCS2, SOCS-2, CYTOKINE-INDUCIBLE SH2 PROTEIN 2, CIS-2, STAT-INDUCED STAT INHIBITOR 2, SSI-2

Molecule 2 - TRANSCRIPTION ELONGATION FACTOR B POLYPEPTIDE 2
	Chains	:	B
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Organism Common	:	HUMAN
	Organism Scientific	:	HOMO SAPIENS
	Organism Taxid	:	9606
	Synonym	:	HUMAN ELONGIN B, RNA POLYMERASE II TRANSCRIPTION FACTOR SIII SUBUNIT B, SIII P18, ELONGIN B, ELOB, ELONGIN 18 KDA SUBUNIT

Molecule 3 - TRANSCRIPTION ELONGATION FACTOR B POLYPEPTIDE 1
	Chains	:	C
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Organism Common	:	HUMAN
	Organism Scientific	:	HOMO SAPIENS
	Organism Taxid	:	9606
	Synonym	:	HUMAN ELONGIN C, RNA POLYMERASE II TRANSCRIPTION FACTOR SIII SUBUNIT C, SIII P15, ELONGIN C, ELOC, ELONGIN 15 KDA SUBUNIT

		1	2	3
Asymmetric/Biological Unit	:	A	B	C

Summary Information (see also Sequences/Alignments below)

Asymmetric/Biological Unit (2, 6)

No.	Name	Count	Type	Full Name
1	NI	3	Ligand/Ion	NICKEL (II) ION
2	SO4	3	Ligand/Ion	SULFATE ION

Asymmetric Unit (6, 6)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	VAL A:55 , ARG A:73 , SER A:75 , SER A:76 , THR A:83 , ARG A:96 , HOH A:2074	BINDING SITE FOR RESIDUE SO4 A1199
2	AC2	SOFTWARE	THR A:54 , ASN A:56 , ARG A:105 , HOH A:2075	BINDING SITE FOR RESIDUE SO4 A1200
3	AC3	SOFTWARE	GLN A:45 , SER A:162 , ARG A:168 , TYR A:190 , HOH A:2076 , HOH A:2077	BINDING SITE FOR RESIDUE SO4 A1201
4	AC4	SOFTWARE	ASP A:120 , HIS A:124	BINDING SITE FOR RESIDUE NI A1202
5	AC5	SOFTWARE	CYS A:111	BINDING SITE FOR RESIDUE NI A1203
6	AC6	SOFTWARE	CYS B:89	BINDING SITE FOR RESIDUE NI B1105

(no "SS Bond" information available for 2C9W)

(no "Cis Peptide Bond" information available for 2C9W)

Asymmetric/Biological Unit (1, 1)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_052032	S	52	N	SOCS2_HUMAN	Polymorphism	3741676	A	S	52	N

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

Asymmetric/Biological Unit (2, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	SH2	PS50001	Src homology 2 (SH2) domain profile.	SOCS2_HUMAN	48-156	1	A:48-156
2	SOCS	PS50225	SOCS box domain profile.	SOCS2_HUMAN	151-197	1	A:151-197

Asymmetric/Biological Unit (4, 4)

	ENSEMBL					UniProtKB			PDB
No.	Transcript ID	Exon	Exon ID	Genome Location	Length	ID	Location	Length	Count	Location	Length
1.1g	ENST00000284811	1g	ENSE00002103151	chr8:74884341-74884277	65	ELOC_HUMAN	-	0	0	-	-
1.6	ENST00000284811	6	ENSE00001087342	chr8:74872053-74872000	54	ELOC_HUMAN	1-2	2	0	-	-
1.7	ENST00000284811	7	ENSE00001016720	chr8:74868289-74868146	144	ELOC_HUMAN	2-50	49	1	C:17-45	29
1.10d	ENST00000284811	10d	ENSE00001424822	chr8:74859055-74858636	420	ELOC_HUMAN	50-112	63	1	C:58-112 (gaps)	55

2.1	ENST00000340600	1	ENSE00001275085	chr12:93963598-93963974	377	SOCS2_HUMAN	-	0	0	-	-
2.2	ENST00000340600	2	ENSE00001391584	chr12:93966461-93966812	352	SOCS2_HUMAN	1-47	47	1	A:32-47	16
2.3	ENST00000340600	3	ENSE00001383064	chr12:93968498-93969978	1481	SOCS2_HUMAN	47-198	152	1	A:47-198 (gaps)	152

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
	(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:153
 aligned with SOCS2_HUMAN | O14508 from UniProtKB/Swiss-Prot  Length:198

    Alignment length:167
                                    41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       
          SOCS2_HUMAN    32 QAARLAKALRELGQTGWYWGSMTVNEAKEKLKEAPEGTFLIRDSSHSDYLLTISVKTSAGPTNLRIEYQDGKFRLDSIICVKSKLKQFDSVVHLIDYYVQMCKDKRTGPEAPRNGTVHLYLTKPLYTSAPSLQHLCRLTINKCTGAIWGLPLPTRLKDYLEEYKFQV 198
               SCOP domains d2c9wa2 A:32-134 Suppressor of cytokine signaling 2, SOCS-2                                            --------------d2c9wa1 A:149-198                                  SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhh.......hhhhhhhhhh......eeeee.......eeeeeee..eeeeeeeeee..eeee.....hhhhh....hhhhhhhhhhhhh.--------------.............hhhhhhhhhhhhhh.hhhhh..hhhhhhhhhh..... Sec.struct. author
                 SAPs(SNPs) --------------------N-------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) ----------------SH2  PDB: A:48-156 UniProt: 48-156                                                                           ------------------------------------------ PROSITE (1)
                PROSITE (2) -----------------------------------------------------------------------------------------------------------------------SOCS  PDB: A:151-197 UniProt: 151-197          - PROSITE (2)
           Transcript 2 (1) Exon 2.2        ------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript 2 (1)
           Transcript 2 (2) ---------------Exon 2.3  PDB: A:47-198 (gaps) UniProt: 47-198                                                                                                           Transcript 2 (2)
                 2c9w A  32 QAARLAKALRELGQTGWYWGSMTVNEAKEKLKEAPEGTFLIRDSSHSDYLLTISVKTSAGPTNLRIEYQDGKFRLDSIICVKSKLKQFDSVVHLIDYYVQMCK--------------HLYLTKPLYTSAPSLQHLCRLTINKCTGAIWGLPLPTRLKDYLEEYKFQV 198
                                    41        51        61        71        81        91       101       111       121       131  |      -       151       161       171       181       191       
                                                                                                                                134            149

Chain B from PDB  Type:PROTEIN  Length:103
 aligned with ELOB_HUMAN | Q15370 from UniProtKB/Swiss-Prot  Length:118

    Alignment length:103
                                    11        21        31        41        51        61        71        81        91       101   
           ELOB_HUMAN     2 DVFLMIRRHKTTIFTDAKESSTVFELKRIVEGILKRPPDEQRLYKDDQLLDDGKTLGECGFTSQTARPQAPATVGLAFRADDTFEALCIEPFSSPPELPDVMK 104
               SCOP domains d2c9wb_ B: automated matches                                                                            SCOP domains
               CATH domains 2c9wB00 B:2-104 Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 1                      CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeeee..eeeeeee....hhhhhhhhhhhhhh.hhh.eeeee..ee......hhhhh...........eeeeeeeee..ee..............hhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------- Transcript
                 2c9w B   2 DVFLMIRRHKTTIFTDAKESSTVFELKRIVEGILKRPPDEQRLYKDDQLLDDGKTLGECGFTSQTARPQAPATVGLAFRADDTFEALCIEPFSSPPELPDVMK 104
                                    11        21        31        41        51        61        71        81        91       101

Chain C from PDB  Type:PROTEIN  Length:80
 aligned with ELOC_HUMAN | Q15369 from UniProtKB/Swiss-Prot  Length:112

    Alignment length:96
                                    26        36        46        56        66        76        86        96       106      
           ELOC_HUMAN    17 MYVKLISSDGHEFIVKREHALTSGTIKAMLSGPGQFAENETNEVNFREIPSHVLSKVCMYFTYKVRYTNSSTEIPEFPIAPEIALELLMAANFLDC 112
               SCOP domains d2c9wc_ C: Elongin C                                                                             SCOP domains
               CATH domains 2c9wC00 C:17-112 Potassium Ch            annel Kv1.1; Chain A                                    CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author .eeeee.....eeeeehhhhh.hhhhhhh------------.eee....hhhhhhhhhhhhhhhhhh.----.......hhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------ PROSITE
           Transcript 1 (1) ---------------------------------Exon 1.10d  PDB: C:58-112 (gaps) UniProt: 50-112 [INCOMPLETE]   Transcript 1 (1)
           Transcript 1 (2) Exon 1.7  PDB: C:17-45            -------------------------------------------------------------- Transcript 1 (2)
                 2c9w C  17 MYVKLISSDGHEFIVKREHALTSGTIKAM------------NEVNFREIPSHVLSKVCMYFTYKVRYT----EIPEFPIAPEIALELLMAANFLDC 112
                                    26        36        |-         - |      66        76       | -  |     96       106      
                                                       45           58                        84   89

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/Biological Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Alpha Beta (26913)

Architecture: 2-Layer Sandwich (8480)

Topology: Potassium Channel Kv1.1; Chain A (53)

Homologous Superfamily: Potassium Channel Kv1.1; Chain A (53)

Human (Homo sapiens) (30)

2c9wC00

C:17-112

Architecture: Roll (3276)

Topology: Ubiquitin-like (UB roll) (674)

Homologous Superfamily: Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 1 (286)

Human (Homo sapiens) (177)

2c9wB00

B:2-104

(no "Pfam Domain" information available for 2C9W)

Asymmetric/Biological Unit(hide GO term definitions)

Chain A (SOCS2_HUMAN | O14508)

molecular function
	GO:0008269	JAK pathway signal transduction adaptor activity	The binding activity of a molecule that brings together two molecules of the JAK signal transduction pathway, permitting them to function in a coordinated way.
	GO:0005070	SH3/SH2 adaptor activity	Interacting selectively and non-covalently and simultaneously with one or more signal transduction molecules, usually acting as a scaffold to bring these molecules into close proximity either using their own SH2/SH3 domains (e.g. Grb2) or those of their target molecules (e.g. SAM68).
	GO:0005131	growth hormone receptor binding	Interacting selectively and non-covalently with the growth hormone receptor.
	GO:0005159	insulin-like growth factor receptor binding	Interacting selectively and non-covalently with the insulin-like growth factor receptor.
	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:0004860	protein kinase inhibitor activity	Stops, prevents or reduces the activity of a protein kinase, an enzyme which phosphorylates a protein.
biological process
	GO:0007259	JAK-STAT cascade	Any process in which STAT proteins (Signal Transducers and Activators of Transcription) and JAK (Janus Activated Kinase) proteins convey a signal to trigger a change in the activity or state of a cell. The JAK-STAT cascade begins with activation of STAT proteins by members of the JAK family of tyrosine kinases, proceeds through dimerization and subsequent nuclear translocation of STAT proteins, and ends with regulation of target gene expression by STAT proteins.
	GO:0032870	cellular response to hormone stimulus	Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a hormone stimulus.
	GO:0019221	cytokine-mediated signaling pathway	A series of molecular signals initiated by the binding of a cytokine to a receptor on the surface of a cell, and ending with regulation of a downstream cellular process, e.g. transcription.
	GO:0060396	growth hormone receptor signaling pathway	The series of molecular signals generated as a consequence of growth hormone receptor binding to its physiological ligand.
	GO:0035556	intracellular signal transduction	The process in which a signal is passed on to downstream components within the cell, which become activated themselves to further propagate the signal and finally trigger a change in the function or state of the cell.
	GO:0046426	negative regulation of JAK-STAT cascade	Any process that stops, prevents, or reduces the frequency, rate or extent of the JAK-STAT signaling pathway activity.
	GO:0043066	negative regulation of apoptotic process	Any process that stops, prevents, or reduces the frequency, rate or extent of cell death by apoptotic process.
	GO:0046627	negative regulation of insulin receptor signaling pathway	Any process that stops, prevents, or reduces the frequency, rate or extent of insulin receptor signaling.
	GO:0006469	negative regulation of protein kinase activity	Any process that stops, prevents, or reduces the frequency, rate or extent of protein kinase activity.
	GO:0009968	negative regulation of signal transduction	Any process that stops, prevents, or reduces the frequency, rate or extent of signal transduction.
	GO:0009967	positive regulation of signal transduction	Any process that activates or increases the frequency, rate or extent of signal transduction.
	GO:0016567	protein ubiquitination	The process in which one or more ubiquitin groups are added to a protein.
	GO:0001558	regulation of cell growth	Any process that modulates the frequency, rate, extent or direction of cell growth.
	GO:0040008	regulation of growth	Any process that modulates the frequency, rate or extent of the growth of all or part of an organism so that it occurs at its proper speed, either globally or in a specific part of the organism's development.
	GO:0009966	regulation of signal transduction	Any process that modulates the frequency, rate or extent of signal transduction.
	GO:0032355	response to estradiol	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of stimulus by estradiol, a C18 steroid hormone hydroxylated at C3 and C17 that acts as a potent estrogen.
cellular component
	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.

Chain B (ELOB_HUMAN | Q15370)

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).
	GO:0031625	ubiquitin protein ligase binding	Interacting selectively and non-covalently with a ubiquitin protein ligase enzyme, any of the E3 proteins.
biological process
	GO:0006461	protein complex assembly	The aggregation, arrangement and bonding together of a set of components to form a protein complex.
	GO:0016567	protein ubiquitination	The process in which one or more ubiquitin groups are added to a protein.
	GO:0061418	regulation of transcription from RNA polymerase II promoter in response to hypoxia	Any process that modulates the frequency, rate or extent of transcription from an RNA polymerase II promoter as a result of a hypoxia stimulus.
	GO:0006355	regulation of transcription, DNA-templated	Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
	GO:0006368	transcription elongation from RNA polymerase II promoter	The extension of an RNA molecule after transcription initiation and promoter clearance at an RNA polymerase II promoter by the addition of ribonucleotides catalyzed by RNA polymerase II.
	GO:0006366	transcription from RNA polymerase II promoter	The synthesis of RNA from a DNA template by RNA polymerase II, originating at an RNA polymerase II promoter. Includes transcription of messenger RNA (mRNA) and certain small nuclear RNAs (snRNAs).
	GO:0006351	transcription, DNA-templated	The cellular synthesis of RNA on a template of DNA.
cellular component
	GO:0031462	Cul2-RING ubiquitin ligase complex	A ubiquitin ligase complex in which a cullin from the Cul2 subfamily and a RING domain protein form the catalytic core; substrate specificity is conferred by an elongin-BC adaptor and a SOCS/BC box protein.
	GO:0031466	Cul5-RING ubiquitin ligase complex	A ubiquitin ligase complex in which a cullin from the Cul5 subfamily and a RING domain protein form the catalytic core; substrate specificity is conferred by an elongin-BC adaptor and a SOCS/BC box protein.
	GO:0030891	VCB complex	A protein complex that possesses ubiquitin ligase activity; the complex is usually pentameric; for example, in mammals the subunits are pVHL, elongin B, elongin C, cullin-2 (Cul2), and Rbx1.
	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:0070449	elongin complex	A transcription elongation factor complex that suppresses RNA polymerase II pausing, and may act by promoting proper alignment of the 3'-end of nascent transcripts with the polymerase catalytic site. Consists of a transcriptionally active Elongin A subunit (abut 100 kDa)and two smaller Elongin B (about 18 kDa) and Elongin C (about 15 kDa)subunits.
	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: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 C (ELOC_HUMAN | Q15369)

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).
	GO:0004842	ubiquitin-protein transferase activity	Catalysis of the transfer of ubiquitin from one protein to another via the reaction X-Ub + Y --> Y-Ub + X, where both X-Ub and Y-Ub are covalent linkages.
biological process
	GO:0032968	positive regulation of transcription elongation from RNA polymerase II promoter	Any process that activates or increases the frequency, rate or extent of transcription elongation, the extension of an RNA molecule after transcription initiation and promoter clearance by the addition of ribonucleotides, catalyzed by RNA polymerase II.
	GO:0042787	protein ubiquitination involved in ubiquitin-dependent protein catabolic process	The process in which a ubiquitin group, or multiple groups, are covalently attached to the target protein, thereby initiating the degradation of that protein.
	GO:0006357	regulation of transcription from RNA polymerase II promoter	Any process that modulates the frequency, rate or extent of transcription from an RNA polymerase II promoter.
	GO:0061418	regulation of transcription from RNA polymerase II promoter in response to hypoxia	Any process that modulates the frequency, rate or extent of transcription from an RNA polymerase II promoter as a result of a hypoxia stimulus.
	GO:0006355	regulation of transcription, DNA-templated	Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
	GO:0006368	transcription elongation from RNA polymerase II promoter	The extension of an RNA molecule after transcription initiation and promoter clearance at an RNA polymerase II promoter by the addition of ribonucleotides catalyzed by RNA polymerase II.
	GO:0006366	transcription from RNA polymerase II promoter	The synthesis of RNA from a DNA template by RNA polymerase II, originating at an RNA polymerase II promoter. Includes transcription of messenger RNA (mRNA) and certain small nuclear RNAs (snRNAs).
	GO:0006351	transcription, DNA-templated	The cellular synthesis of RNA on a template of DNA.
	GO:0006511	ubiquitin-dependent protein catabolic process	The chemical reactions and pathways resulting in the breakdown of a protein or peptide by hydrolysis of its peptide bonds, initiated by the covalent attachment of a ubiquitin group, or multiple ubiquitin groups, to the protein.
	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:0005829	cytosol	The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
	GO:0070449	elongin complex	A transcription elongation factor complex that suppresses RNA polymerase II pausing, and may act by promoting proper alignment of the 3'-end of nascent transcripts with the polymerase catalytic site. Consists of a transcriptionally active Elongin A subunit (abut 100 kDa)and two smaller Elongin B (about 18 kDa) and Elongin C (about 15 kDa)subunits.
	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.

Asymmetric/Biological Unit
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	2c9w
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	ELOC_HUMAN \| Q15369
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	SOCS2_HUMAN \| O14508
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	ELOB_HUMAN \| Q15370
		Protein Disorder Prediction	:	DisEMBL \| FoldIndex \| GLOBPLOT (for more information see DisProt)
	ELOC_HUMAN \| Q15369
		Protein Disorder Prediction	:	DisEMBL \| FoldIndex \| GLOBPLOT (for more information see DisProt)
	SOCS2_HUMAN \| O14508
		Protein Disorder Prediction	:	DisEMBL \| FoldIndex \| GLOBPLOT (for more information see DisProt)

1lm8	STRUCTURE OF A HIF-1A-PVHL-ELONGINB- ELONGINC COMPLEX
1lqb	CRYSTAL STRUCTURE OF A HYDROXYLATED HIF-1 ALPHA PEPTIDEBOUND TO THE PVHL/ELONGIN-C/ ELONGIN-B COMPLEX
1vcb	THE VHL-ELONGINC-ELONGINB STRUCTURE

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (2, 6)

Sites (6, 6)

SS Bonds (0, 0)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (1, 1)

PROSITE Motifs (2, 2)

Exons (4, 4)

Sequences/Alignments

Classification and Annotation

SCOP Domains (4, 4)

CATH Domains (2, 2)

Pfam Domains (0, 0)

Gene Ontology (44, 57)

Visualization

Interactive Views

Still Images

Databases and Analysis Tools

Databases

Analysis Tools

Related Entries

Entries Sharing at Least One Protein Chain (UniProt ID)

Related Entries Specified in the PDB File