1SEB - JenaLib

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:181
 aligned with DRA_HUMAN | P01903 from UniProtKB/Swiss-Prot  Length:254

    Alignment length:181
                                    35        45        55        65        75        85        95       105       115       125       135       145       155       165       175       185       195       205 
            DRA_HUMAN    26 IKEEHVIIQAEFYLNPDQSGEFMFDFDGDEIFHVDMAKKETVWRLEEFGRFASFEAQGALANIAVDKANLEIMTKRSNYTPITNVPPEVTVLTNSPVELREPNVLICFIDKFTPPVVNVTWLRNGKPVTTGVSETVFLPREDHLFRKFHYLPFLPSTEDVYDCRVEHWGLDEPLLKHWEFD 206
               SCOP domains d1seba2 A:1-81 Class II MHC alpha chain, N-terminal domain                       d1seba1 A:82-181 Class II MHC alpha chain, C-terminal domain                                         SCOP domains
               CATH domains --1sebA01 A:3-81                                                                 1sebA02 A:82-181 Immunoglobulins                                                                     CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....eeeeeeeeeee...eeeeeeee..eeeeeee....eeee..hhhhh.....hhhhhhhhhhhhhhhhhhhhh...........eeeeee........eeeeeeeee.......eeeeee..eee..................eeeeeeee......eeeeee.......eeeee... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) ----------------------------------------------------------------------------------------------------------------------------------------------------------------IG_MHC -------------- PROSITE (2)
           Transcript 2 (1) 2.6---------------------------------------------------------------------------------Exon 2.8c  PDB: A:85-179 UniProt: 110-204                                                      -- Transcript 2 (1)
           Transcript 2 (2) --Exon 2.7b  PDB: A:3-85 UniProt: 28-110                                             ---------------------------------------------------------------------------------------------2.9 Transcript 2 (2)
                 1seb A   1 IKEEHVIIQAEFYLNPDQSGEFMFDFDGDEIFHVDMAKKETVWRLEEFGRFASFEAQGALANIAVDKANLEIMTKRSNYTPITNVPPEVTVLTNSPVELREPNVLICFIDKFTPPVVNVTWLRNGKPVTTGVSETVFLPREDHLFRKFHYLPFLPSTEDVYDCRVEHWGLDEPLLKHWEFD 181
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180

Chain B from PDB  Type:PROTEIN  Length:192
 aligned with 2B11_HUMAN | P04229 from UniProtKB/Swiss-Prot  Length:266

    Alignment length:192
                                    39        49        59        69        79        89        99       109       119       129       139       149       159       169       179       189       199       209       219  
           2B11_HUMAN    30 GDTRPRFLWQLKFECHFFNGTERVRLLERCIYNQEESVRFDSDVGEYRAVTELGRPDAEYWNSQKDLLEQRRAAVDTYCRHNYGVGESFTVQRRVEPKVTVYPSKTQPLQHHNLLVCSVSGFYPGSIEVRWFRNGQEEKAGVVSTGLIQNGDWTFQTLVMLETVPRSGEVYTCQVEHPSVTSPLTVEWRARS 221
               SCOP domains d1sebb2 B:1-92 Class II MHC beta chain, N-terminal domain                                   d1sebb1 B:93-192 Class II MHC beta chain, C-terminal domain                                          SCOP domains
               CATH domains 1sebB01 B:1-92 Class II Histocompatibility Antigen, M Beta Chain; Chain B, domain 1         1sebB02 B:93-192 Immunoglobulins                                                                     CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ......eeeeeeeeeeee....eeeeeeeee....eeeeee.....eee.....hhhhhhhhh.hhhhhhhh.hhhh.hhhhhhhh...........eeeeee........eeeeeeeeeee....eeeeeee.....................eeeeeeeeee.....eeeeeeee......eeeeee... Sec.struct. author
             SAPs(SNPs) (1) ---K-----E--------------------------Y-------R-F------------S------I--DA-GE--NH------AV------------------------------------------------D----T-M------H----------------Q--------------I----------- SAPs(SNPs) (1)
             SAPs(SNPs) (2) ---Q-----------------------------------------------------------------EE------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (2)
             SAPs(SNPs) (3) ---------------------------------------------------------------------H-------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (3)
                PROSITE (2) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------IG_MHC --------------- PROSITE (2)
           Transcript 1 (1) 1.3  -----------------------------------------------------------------------------------------Exon 1.5b  PDB: B:95-189 UniProt: 124-218                                                      --- Transcript 1 (1)
           Transcript 1 (2) ----Exon 1.4  PDB: B:5-95 UniProt: 34-124                                                      ---------------------------------------------------------------------------------------------1.6  Transcript 1 (2)
                 1seb B   1 GDTRPRFLWQLKFECHFFNGTERVRLLERCIYNQEESVRFDSDVGEYRAVTELGRPDAEYWNSQKDLLEQRRAAVDTYCRHNYGVGESFTVQRRVEPKVTVYPSKTQPLQHHNLLVCSVSGFYPGSIEVRWFRNGQEEKAGVVSTGLIQNGDWTFQTLVMLETVPRSGEVYTCQVEHPSVTSPLTVEWRARS 192
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190

Chain C from PDB  Type:PROTEIN  Length:13
                                             
               SCOP domains ------------- SCOP domains
               CATH domains ------------- CATH domains
               Pfam domains ------------- Pfam domains
         Sec.struct. author ............. Sec.struct. author
                 SAPs(SNPs) ------------- SAPs(SNPs)
                    PROSITE ------------- PROSITE
                 Transcript ------------- Transcript
                 1seb C   1 xxxxxxxxxxxxx  13
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Chain D from PDB  Type:PROTEIN  Length:206
 aligned with ETXB_STAAU | P01552 from UniProtKB/Swiss-Prot  Length:266

    Alignment length:234
                                    38        48        58        68        78        88        98       108       118       128       138       148       158       168       178       188       198       208       218       228       238       248       258    
           ETXB_STAAU    29 SQPDPKPDELHKSSKFTGLMENMKVLYDDNHVSAINVKSIDQFLYFDLIYSIKDTKLGNYDNVRVEFKNKDLADKYKDKYVDVFGANYYYQCYFSKKTNDINSHQTDKRKTCMYGGVTEHNGNQLDKYRSITVRVFEDGKNLLSFDVQTNKKKVTAQELDYLTRHYLVKNKKLYEFNNSPYETGYIKFIENENSFWYDMMPAPGDKFDQSKYLMMYNDNKMVDSKDVKIEVYLT 262
               SCOP domains d1sebd1 D:2-121 Staphylococcal enterotoxin B, SEB                                                                            d1sebd2 D:127-235 Staphylococcal enterotoxin B, S       EB                                                    SCOP domains
               CATH domains 1sebD02 D:2-31,D:128-235      1sebD01 D:32-121  [code=2    .40.50.110, no name defined]                                      -1sebD02 D:2-31,D:128-235  [code=3.10.20.120, no        name defined]                                         CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ............hhh....hhhhhhhh....eee............eeee.....----...eeee...hhhhhhhh....eeee............------------.eee..eee..-----..............................hhhhhhhhhhhhhhhh...-------.eeeeeee....eeeee..........hhhhhhhh...........eeeeeee Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE -----------------------------------------------------------------------------------------------------------------STAPH_STRE---------------------------STAPH_STREP_TOXIN_2     ------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1seb D   2 SQPDPKPDELHKSSKFTGLMENMKVLYDDNHVSAINVKSIDQFLYFDLIYSIKDT----YDNVRVEFKNKDLADKYKDKYVDVFGANYYYQCYFSKK------------KTCMYGGVTEH-----DKYRSITVRVFEDGKNLLSFDVQTNKKKVTAQELDYLTRHYLVKNKKLY-------ETGYIKFIENENSFWYDMMPAPGDKFDQSKYLMMYNDNKMVDSKDVKIEVYLT 235
                                    11        21        31        41        51    |   61        71        81        91      |  -       111       121     | 131       141       151       161       171   |     - |     191       201       211       221       231    
                                                                                 56   61                                   98          111       121   127                                             175     183

Chain E from PDB  Type:PROTEIN  Length:181
 aligned with DRA_HUMAN | P01903 from UniProtKB/Swiss-Prot  Length:254

    Alignment length:181
                                    35        45        55        65        75        85        95       105       115       125       135       145       155       165       175       185       195       205 
            DRA_HUMAN    26 IKEEHVIIQAEFYLNPDQSGEFMFDFDGDEIFHVDMAKKETVWRLEEFGRFASFEAQGALANIAVDKANLEIMTKRSNYTPITNVPPEVTVLTNSPVELREPNVLICFIDKFTPPVVNVTWLRNGKPVTTGVSETVFLPREDHLFRKFHYLPFLPSTEDVYDCRVEHWGLDEPLLKHWEFD 206
               SCOP domains d1sebe2 E:1-81 Class II MHC alpha chain, N-terminal domain                       d1sebe1 E:82-181 Class II MHC alpha chain, C-terminal domain                                         SCOP domains
               CATH domains --1sebE01 E:3-81                                                                 1sebE02 E:82-181 Immunoglobulins                                                                     CATH domains
           Pfam domains (1) ---MHC_II_alpha-1sebE03 E:4-84                                                      --------C1-set-1sebE01 E:93-175                                                            ------ Pfam domains (1)
           Pfam domains (2) ---MHC_II_alpha-1sebE04 E:4-84                                                      --------C1-set-1sebE02 E:93-175                                                            ------ Pfam domains (2)
         Sec.struct. author ....eeeeeeeeeee...eeeeeeee..eeeeeee....eeee..hhhhh.....hhhhhhhhhhhhhhhhhhhhh...........eeeeee........eeeeeeeee.......eeeeee..eee..................eeeeeeee......eeeeee.......eeeee... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) ----------------------------------------------------------------------------------------------------------------------------------------------------------------IG_MHC -------------- PROSITE (2)
           Transcript 2 (1) 2.6---------------------------------------------------------------------------------Exon 2.8c  PDB: E:85-179 UniProt: 110-204                                                      -- Transcript 2 (1)
           Transcript 2 (2) --Exon 2.7b  PDB: E:3-85 UniProt: 28-110                                             ---------------------------------------------------------------------------------------------2.9 Transcript 2 (2)
                 1seb E   1 IKEEHVIIQAEFYLNPDQSGEFMFDFDGDEIFHVDMAKKETVWRLEEFGRFASFEAQGALANIAVDKANLEIMTKRSNYTPITNVPPEVTVLTNSPVELREPNVLICFIDKFTPPVVNVTWLRNGKPVTTGVSETVFLPREDHLFRKFHYLPFLPSTEDVYDCRVEHWGLDEPLLKHWEFD 181
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180

Chain F from PDB  Type:PROTEIN  Length:192
 aligned with 2B11_HUMAN | P04229 from UniProtKB/Swiss-Prot  Length:266

    Alignment length:192
                                    39        49        59        69        79        89        99       109       119       129       139       149       159       169       179       189       199       209       219  
           2B11_HUMAN    30 GDTRPRFLWQLKFECHFFNGTERVRLLERCIYNQEESVRFDSDVGEYRAVTELGRPDAEYWNSQKDLLEQRRAAVDTYCRHNYGVGESFTVQRRVEPKVTVYPSKTQPLQHHNLLVCSVSGFYPGSIEVRWFRNGQEEKAGVVSTGLIQNGDWTFQTLVMLETVPRSGEVYTCQVEHPSVTSPLTVEWRARS 221
               SCOP domains d1sebf2 F:1-92 Class II MHC beta chain, N-terminal domain                                   d1sebf1 F:93-192 Class II MHC beta chain, C-terminal domain                                          SCOP domains
               CATH domains 1sebF01 F:1-92 Class II Histocompatibility Antigen, M Beta Chain; Chain B, domain 1         1sebF02 F:93-192 Immunoglobulins                                                                     CATH domains
           Pfam domains (1) ------------MHC_II_beta-1sebF03 F:13-87                                                ---------------C1-set-1sebF01 F:103-185                                                           ------- Pfam domains (1)
           Pfam domains (2) ------------MHC_II_beta-1sebF04 F:13-87                                                ---------------C1-set-1sebF02 F:103-185                                                           ------- Pfam domains (2)
         Sec.struct. author ......eeeeeeeeeeee....eeeeeeeee....eeeeee.....eee.....hhhhhhhhh.hhhhhhhh.hhhh.hhhhhhhh...........eeeeee........eeeeeeeeeee....eeeeeee.....................eeeeeeeeee.....eeeeeeee......eeeeee... Sec.struct. author
             SAPs(SNPs) (1) ---K-----E--------------------------Y-------R-F------------S------I--DA-GE--NH------AV------------------------------------------------D----T-M------H----------------Q--------------I----------- SAPs(SNPs) (1)
             SAPs(SNPs) (2) ---Q-----------------------------------------------------------------EE------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (2)
             SAPs(SNPs) (3) ---------------------------------------------------------------------H-------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (3)
                PROSITE (2) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------IG_MHC --------------- PROSITE (2)
           Transcript 1 (1) 1.3  -----------------------------------------------------------------------------------------Exon 1.5b  PDB: F:95-189 UniProt: 124-218                                                      --- Transcript 1 (1)
           Transcript 1 (2) ----Exon 1.4  PDB: F:5-95 UniProt: 34-124                                                      ---------------------------------------------------------------------------------------------1.6  Transcript 1 (2)
                 1seb F   1 GDTRPRFLWQLKFECHFFNGTERVRLLERCIYNQEESVRFDSDVGEYRAVTELGRPDAEYWNSQKDLLEQRRAAVDTYCRHNYGVGESFTVQRRVEPKVTVYPSKTQPLQHHNLLVCSVSGFYPGSIEVRWFRNGQEEKAGVVSTGLIQNGDWTFQTLVMLETVPRSGEVYTCQVEHPSVTSPLTVEWRARS 192
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190

Chain G from PDB  Type:PROTEIN  Length:13
                                             
               SCOP domains ------------- SCOP domains
               CATH domains ------------- CATH domains
               Pfam domains ------------- Pfam domains
         Sec.struct. author ............. Sec.struct. author
                 SAPs(SNPs) ------------- SAPs(SNPs)
                    PROSITE ------------- PROSITE
                 Transcript ------------- Transcript
                 1seb G   1 xxxxxxxxxxxxx  13
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                                  7-UNK  
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Chain H from PDB  Type:PROTEIN  Length:206
 aligned with ETXB_STAAU | P01552 from UniProtKB/Swiss-Prot  Length:266

    Alignment length:234
                                    38        48        58        68        78        88        98       108       118       128       138       148       158       168       178       188       198       208       218       228       238       248       258    
           ETXB_STAAU    29 SQPDPKPDELHKSSKFTGLMENMKVLYDDNHVSAINVKSIDQFLYFDLIYSIKDTKLGNYDNVRVEFKNKDLADKYKDKYVDVFGANYYYQCYFSKKTNDINSHQTDKRKTCMYGGVTEHNGNQLDKYRSITVRVFEDGKNLLSFDVQTNKKKVTAQELDYLTRHYLVKNKKLYEFNNSPYETGYIKFIENENSFWYDMMPAPGDKFDQSKYLMMYNDNKMVDSKDVKIEVYLT 262
               SCOP domains d1sebh1 H:2-121 Staphylococcal enterotoxin B, SEB                                                                            d1sebh2 H:127-235 Staphylococcal enterotoxin B, S       EB                                                    SCOP domains
               CATH domains 1sebH02 H:2-31,H:128-231      1sebH01 H:32-121  [code=2    .40.50.110, no name defined]                                      -1sebH02 H:2-31,H:128-231  [code=3.10.20.120, no        name defined]                                    ---- CATH domains
           Pfam domains (1) ---------------------Stap_Strp_toxin-1sebH03 H:23-121                                                                        ---Stap_Strp_tox_C-1sebH01 H:130-235                                                                          Pfam domains (1)
           Pfam domains (2) ---------------------Stap_Strp_toxin-1sebH04 H:23-121                                                                        ---Stap_Strp_tox_C-1sebH02 H:130-235                                                                          Pfam domains (2)
         Sec.struct. author ............hhh....hhhhhhhh....eee............eeee.....----...eeee...hhhhhhhh....eeee............------------.eee..eee..-----..............................hhhhhhhhhhhhhhhh...-------.eeeeeee....eeeee..........hhhhhhhh...........eeeeeee Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE -----------------------------------------------------------------------------------------------------------------STAPH_STRE---------------------------STAPH_STREP_TOXIN_2     ------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1seb H   2 SQPDPKPDELHKSSKFTGLMENMKVLYDDNHVSAINVKSIDQFLYFDLIYSIKDT----YDNVRVEFKNKDLADKYKDKYVDVFGANYYYQCYFSKK------------KTCMYGGVTEH-----DKYRSITVRVFEDGKNLLSFDVQTNKKKVTAQELDYLTRHYLVKNKKLY-------ETGYIKFIENENSFWYDMMPAPGDKFDQSKYLMMYNDNKMVDSKDVKIEVYLT 235
                                    11        21        31        41        51    |   61        71        81        91      |  -       111       121     | 131       141       151       161       171   |     - |     191       201       211       221       231    
                                                                                 56   61                                   98          111       121   127                                             175     183

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(hide GO term definitions)

Chain A,E (DRA_HUMAN | P01903)

molecular function
	GO:0023026	MHC class II protein complex binding	Interacting selectively and non-covalently with the class II major histocompatibility complex.
	GO:0032395	MHC class II receptor activity	Combining with an MHC class II protein complex and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity.
	GO:0042605	peptide antigen binding	Interacting selectively and non-covalently with an antigen peptide.
biological process
	GO:0031295	T cell costimulation	The process of providing, via surface-bound receptor-ligand pairs, a second, antigen-independent, signal in addition to that provided by the T cell receptor to augment T cell activation.
	GO:0050852	T cell receptor signaling pathway	A series of molecular signals initiated by the cross-linking of an antigen receptor on a T cell.
	GO:0019882	antigen processing and presentation	The process in which an antigen-presenting cell expresses antigen (peptide or lipid) on its cell surface in association with an MHC protein complex.
	GO:0019886	antigen processing and presentation of exogenous peptide antigen via MHC class II	The process in which an antigen-presenting cell expresses a peptide antigen of exogenous origin on its cell surface in association with an MHC class II protein complex. The peptide antigen is typically, but not always, processed from a whole protein.
	GO:0002504	antigen processing and presentation of peptide or polysaccharide antigen via MHC class II	The process in which an antigen-presenting cell expresses antigen (peptide or polysaccharide) on its cell surface in association with an MHC class II protein complex.
	GO:0050890	cognition	The operation of the mind by which an organism becomes aware of objects of thought or perception; it includes the mental activities associated with thinking, learning, and memory.
	GO:0006955	immune response	Any immune system process that functions in the calibrated response of an organism to a potential internal or invasive threat.
	GO:0002376	immune system process	Any process involved in the development or functioning of the immune system, an organismal system for calibrated responses to potential internal or invasive threats.
	GO:0060333	interferon-gamma-mediated signaling pathway	A series of molecular signals initiated by the binding of interferon-gamma to a receptor on the surface of a cell, and ending with regulation of a downstream cellular process, e.g. transcription. Interferon gamma is the only member of the type II interferon found so far.
	GO:0002503	peptide antigen assembly with MHC class II protein complex	The binding of a peptide to the antigen binding groove of an MHC class II protein complex.
	GO:0002506	polysaccharide assembly with MHC class II protein complex	The binding of a polysaccharide to the antigen binding groove of an MHC class II protein complex.
	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:0012507	ER to Golgi transport vesicle membrane	The lipid bilayer surrounding a vesicle transporting substances from the endoplasmic reticulum to the Golgi.
	GO:0005794	Golgi apparatus	A compound membranous cytoplasmic organelle of eukaryotic cells, consisting of flattened, ribosome-free vesicles arranged in a more or less regular stack. The Golgi apparatus differs from the endoplasmic reticulum in often having slightly thicker membranes, appearing in sections as a characteristic shallow semicircle so that the convex side (cis or entry face) abuts the endoplasmic reticulum, secretory vesicles emerging from the concave side (trans or exit face). In vertebrate cells there is usually one such organelle, while in invertebrates and plants, where they are known usually as dictyosomes, there may be several scattered in the cytoplasm. The Golgi apparatus processes proteins produced on the ribosomes of the rough endoplasmic reticulum; such processing includes modification of the core oligosaccharides of glycoproteins, and the sorting and packaging of proteins for transport to a variety of cellular locations. Three different regions of the Golgi are now recognized both in terms of structure and function: cis, in the vicinity of the cis face, trans, in the vicinity of the trans face, and medial, lying between the cis and trans regions.
	GO:0000139	Golgi membrane	The lipid bilayer surrounding any of the compartments of the Golgi apparatus.
	GO:0042613	MHC class II protein complex	A transmembrane protein complex composed of an MHC class II alpha and MHC class II beta chain, and with or without a bound peptide or polysaccharide antigen.
	GO:0009986	cell surface	The external part of the cell wall and/or plasma membrane.
	GO:0030669	clathrin-coated endocytic vesicle membrane	The lipid bilayer surrounding a clathrin-coated endocytic vesicle.
	GO:0030666	endocytic vesicle membrane	The lipid bilayer surrounding an endocytic vesicle.
	GO:0005783	endoplasmic reticulum	The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached).
	GO:0005789	endoplasmic reticulum membrane	The lipid bilayer surrounding the endoplasmic reticulum.
	GO:0005768	endosome	A vacuole to which materials ingested by endocytosis are delivered.
	GO:0010008	endosome membrane	The lipid bilayer surrounding an endosome.
	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:0071556	integral component of lumenal side of endoplasmic reticulum membrane	The component of the endoplasmic reticulum membrane consisting of the gene products that penetrate only the lumenal side of the membrane.
	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:0005887	integral component of plasma membrane	The component of the plasma 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:0031902	late endosome membrane	The lipid bilayer surrounding a late endosome.
	GO:0005765	lysosomal membrane	The lipid bilayer surrounding the lysosome and separating its contents from the cell cytoplasm.
	GO:0005764	lysosome	A small lytic vacuole that has cell cycle-independent morphology and is found in most animal cells and that contains a variety of hydrolases, most of which have their maximal activities in the pH range 5-6. The contained enzymes display latency if properly isolated. About 40 different lysosomal hydrolases are known and lysosomes have a great variety of morphologies and functions.
	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:0032588	trans-Golgi network membrane	The lipid bilayer surrounding any of the compartments that make up the trans-Golgi network.
	GO:0030658	transport vesicle membrane	The lipid bilayer surrounding a transport vesicle.

Chain B,F (2B11_HUMAN | P04229)

molecular function
	GO:0023026	MHC class II protein complex binding	Interacting selectively and non-covalently with the class II major histocompatibility complex.
	GO:0042605	peptide antigen binding	Interacting selectively and non-covalently with an antigen peptide.
	GO:0001618	virus receptor activity	Combining with a virus component and mediating entry of the virus into the cell.
biological process
	GO:0031295	T cell costimulation	The process of providing, via surface-bound receptor-ligand pairs, a second, antigen-independent, signal in addition to that provided by the T cell receptor to augment T cell activation.
	GO:0050852	T cell receptor signaling pathway	A series of molecular signals initiated by the cross-linking of an antigen receptor on a T cell.
	GO:0042088	T-helper 1 type immune response	An immune response which is associated with resistance to intracellular bacteria, fungi, and protozoa, and pathological conditions such as arthritis, and which is typically orchestrated by the production of particular cytokines by T-helper 1 cells, most notably interferon-gamma, IL-2, and lymphotoxin.
	GO:0019882	antigen processing and presentation	The process in which an antigen-presenting cell expresses antigen (peptide or lipid) on its cell surface in association with an MHC protein complex.
	GO:0019886	antigen processing and presentation of exogenous peptide antigen via MHC class II	The process in which an antigen-presenting cell expresses a peptide antigen of exogenous origin on its cell surface in association with an MHC class II protein complex. The peptide antigen is typically, but not always, processed from a whole protein.
	GO:0002504	antigen processing and presentation of peptide or polysaccharide antigen via MHC class II	The process in which an antigen-presenting cell expresses antigen (peptide or polysaccharide) on its cell surface in association with an MHC class II protein complex.
	GO:0016045	detection of bacterium	The series of events in which a stimulus from a bacterium is received and converted into a molecular signal.
	GO:0002455	humoral immune response mediated by circulating immunoglobulin	An immune response dependent upon secreted immunoglobulin. An example of this process is found in Mus musculus.
	GO:0006955	immune response	Any immune system process that functions in the calibrated response of an organism to a potential internal or invasive threat.
	GO:0002376	immune system process	Any process involved in the development or functioning of the immune system, an organismal system for calibrated responses to potential internal or invasive threats.
	GO:0002381	immunoglobulin production involved in immunoglobulin mediated immune response	The appearance of immunoglobulin due to biosynthesis or secretion following a cellular stimulus during an immune response, resulting in an increase in its intracellular or extracellular levels.
	GO:0002437	inflammatory response to antigenic stimulus	An inflammatory response to an antigenic stimulus, which can be include any number of T cell or B cell epitopes.
	GO:0060333	interferon-gamma-mediated signaling pathway	A series of molecular signals initiated by the binding of interferon-gamma to a receptor on the surface of a cell, and ending with regulation of a downstream cellular process, e.g. transcription. Interferon gamma is the only member of the type II interferon found so far.
	GO:0042130	negative regulation of T cell proliferation	Any process that stops, prevents or reduces the rate or extent of T cell proliferation.
	GO:0032689	negative regulation of interferon-gamma production	Any process that stops, prevents, or reduces the frequency, rate, or extent of interferon-gamma production. Interferon-gamma is also known as type II interferon.
	GO:0035774	positive regulation of insulin secretion involved in cellular response to glucose stimulus	Any process that increases the frequency, rate or extent of the regulated release of insulin that contributes to the response of a cell to glucose.
	GO:0051262	protein tetramerization	The formation of a protein tetramer, a macromolecular structure consisting of four noncovalently associated identical or nonidentical subunits.
	GO:2001179	regulation of interleukin-10 secretion	Any process that modulates the frequency, rate or extent of interleukin-10 secretion.
	GO:0032673	regulation of interleukin-4 production	Any process that modulates the frequency, rate, or extent of interleukin-4 production.
	GO:0046718	viral entry into host cell	The process that occurs after viral attachment by which a virus, or viral nucleic acid, breaches the plasma membrane or cell envelope and enters the host cell. The process ends when the viral nucleic acid is released into the host cell cytoplasm.
	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:0012507	ER to Golgi transport vesicle membrane	The lipid bilayer surrounding a vesicle transporting substances from the endoplasmic reticulum to the Golgi.
	GO:0005794	Golgi apparatus	A compound membranous cytoplasmic organelle of eukaryotic cells, consisting of flattened, ribosome-free vesicles arranged in a more or less regular stack. The Golgi apparatus differs from the endoplasmic reticulum in often having slightly thicker membranes, appearing in sections as a characteristic shallow semicircle so that the convex side (cis or entry face) abuts the endoplasmic reticulum, secretory vesicles emerging from the concave side (trans or exit face). In vertebrate cells there is usually one such organelle, while in invertebrates and plants, where they are known usually as dictyosomes, there may be several scattered in the cytoplasm. The Golgi apparatus processes proteins produced on the ribosomes of the rough endoplasmic reticulum; such processing includes modification of the core oligosaccharides of glycoproteins, and the sorting and packaging of proteins for transport to a variety of cellular locations. Three different regions of the Golgi are now recognized both in terms of structure and function: cis, in the vicinity of the cis face, trans, in the vicinity of the trans face, and medial, lying between the cis and trans regions.
	GO:0000139	Golgi membrane	The lipid bilayer surrounding any of the compartments of the Golgi apparatus.
	GO:0042613	MHC class II protein complex	A transmembrane protein complex composed of an MHC class II alpha and MHC class II beta chain, and with or without a bound peptide or polysaccharide antigen.
	GO:0030669	clathrin-coated endocytic vesicle membrane	The lipid bilayer surrounding a clathrin-coated endocytic vesicle.
	GO:0030666	endocytic vesicle membrane	The lipid bilayer surrounding an endocytic vesicle.
	GO:0005783	endoplasmic reticulum	The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached).
	GO:0005789	endoplasmic reticulum membrane	The lipid bilayer surrounding the endoplasmic reticulum.
	GO:0005768	endosome	A vacuole to which materials ingested by endocytosis are delivered.
	GO:0010008	endosome membrane	The lipid bilayer surrounding an endosome.
	GO:0009897	external side of plasma membrane	The leaflet of the plasma membrane that faces away from the cytoplasm and any proteins embedded or anchored in it or attached to its surface.
	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:0071556	integral component of lumenal side of endoplasmic reticulum membrane	The component of the endoplasmic reticulum membrane consisting of the gene products that penetrate only the lumenal side of the membrane.
	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:0031902	late endosome membrane	The lipid bilayer surrounding a late endosome.
	GO:0005765	lysosomal membrane	The lipid bilayer surrounding the lysosome and separating its contents from the cell cytoplasm.
	GO:0005764	lysosome	A small lytic vacuole that has cell cycle-independent morphology and is found in most animal cells and that contains a variety of hydrolases, most of which have their maximal activities in the pH range 5-6. The contained enzymes display latency if properly isolated. About 40 different lysosomal hydrolases are known and lysosomes have a great variety of morphologies and functions.
	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:0032588	trans-Golgi network membrane	The lipid bilayer surrounding any of the compartments that make up the trans-Golgi network.
	GO:0030658	transport vesicle membrane	The lipid bilayer surrounding a transport vesicle.

Chain D,H (ETXB_STAAU | P01552)

biological process
	GO:0009405	pathogenesis	The set of specific processes that generate the ability of an organism to induce an abnormal, generally detrimental state in another organism.
cellular component
	GO:0005576	extracellular region	The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (1, 26)

Sites (0, 0)

SS Bonds (8, 8)

Cis Peptide Bonds (6, 6)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (25, 50)

PROSITE Motifs (3, 8)

Exons (8, 16)

Sequences/Alignments

Classification and Annotation

SCOP Domains (6, 12)

CATH Domains (4, 12)

Pfam Domains (5, 12)

Gene Ontology (53, 84)

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