3RY6 - JenaLib

Asym./Biol. Unit (Jmol Viewer)

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

Title :   COMPLEX OF FCGAMMARIIA (CD32) AND THE FC OF HUMAN IGG1

Authors :   P. A. Ramsland, W. Farrugia, A. M. Scott, P. M. Hogarth

Date :   11 May 11 (Deposition) - 31 Aug 11 (Release) - 21 Sep 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   3.80

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

Keywords :   Fc Receptor, Cd32, Immunoglobulin Superfamily, High Responder Polymorphism, Human Igg1, Therapeutic Antibody, Glycoprotein, Immunoglobulin C Region, Immunoglobulin Domain, Cell Membrane, Igg- Binding Protein, Membrane, Phosphoprotein, Receptor, Transmembrane, Immune System (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   P. A. Ramsland, W. Farrugia, T. M. Bradford, C. T. Sardjono, S. Esparon H. M. Trist, M. S. Powell, P. S. Tan, A. C. Cendron, B. D. Wines, A. M. Scott, P. M. Hogarth
Structural Basis For Fc{Gamma}Riia Recognition Of Human Igg And Formation Of Inflammatory Signaling Complexes.
J. Immunol. V. 187 3208 2011
PubMed-ID: 21856937 | Reference-DOI: 10.4049/JIMMUNOL.1101467

Molecule 1 - IG GAMMA-1 CHAIN C REGION
	Chains	:	A, B
	Engineered	:	YES
	Expression System	:	MUS MUSCULUS
	Expression System Cell Line	:	NS0 MURINE MYELOMA CELLS
	Expression System Common	:	MOUSE
	Expression System Taxid	:	10090
	Fragment	:	UNP RESIDUES 114-327
	Gene	:	IGHG1
	Organism Common	:	HUMAN
	Organism Scientific	:	HOMO SAPIENS
	Organism Taxid	:	9606
	Synonym	:	FC OF HUMAN IGG1, HEAVY CHAIN

Molecule 2 - LOW AFFINITY IMMUNOGLOBULIN GAMMA FC REGION RECEPTOR II-A
	Chains	:	C
	Engineered	:	YES
	Expression System	:	SPODOPTERA FRUGIPERDA
	Expression System Cell Line	:	SF21
	Expression System Common	:	FALL ARMYWORM
	Expression System Plasmid	:	PVL1392
	Expression System Taxid	:	7108
	Expression System Vector Type	:	BACULOVIRUS
	Fragment	:	UNP RESIDUES 40-206
	Gene	:	CD32, FCG2, FCGR2A, FCGR2A1, IGFR2
	Organism Common	:	HUMAN
	Organism Scientific	:	HOMO SAPIENS
	Organism Taxid	:	9606
	Synonym	:	IGG FC RECEPTOR II-A, CDW32, FC-GAMMA RII-A, FC-GAMMA-RIIA, FCRII-A

		1	2	3
Asymmetric/Biological Unit	:	A	B	C

Summary Information (see also Sequences/Alignments below)

Asymmetric/Biological Unit (8, 33)

No.	Name	Count	Type	Full Name
1	BMA	3	Ligand/Ion	BETA-D-MANNOSE
2	FUL	3	Ligand/Ion	BETA-L-FUCOSE
3	GAL	3	Ligand/Ion	BETA-D-GALACTOSE
4	GOL	4	Ligand/Ion	GLYCEROL
5	MAN	6	Ligand/Ion	ALPHA-D-MANNOSE
6	NAG	9	Ligand/Ion	N-ACETYL-D-GLUCOSAMINE
7	NDG	2	Ligand/Ion	2-(ACETYLAMINO)-2-DEOXY-A-D-GLUCOPYRANOSE
8	SIA	3	Ligand/Ion	O-SIALIC ACID

Asymmetric Unit (32, 32)

No.	Name	Evidence	Residues	Description
01	AC1	SOFTWARE	ASP A:265 , ASN A:297 , THR A:299 , FUL A:802 , NAG A:803	BINDING SITE FOR RESIDUE NDG A 801
02	AC2	SOFTWARE	NDG A:801 , MAN A:805	BINDING SITE FOR RESIDUE FUL A 802
03	AC3	SOFTWARE	VAL A:264 , TYR A:296 , ARG A:301 , NDG A:801 , BMA A:804 , MAN A:805	BINDING SITE FOR RESIDUE NAG A 803
04	AC4	SOFTWARE	PHE A:243 , NAG A:803 , MAN A:805 , MAN A:808 , SIA A:811	BINDING SITE FOR RESIDUE BMA A 804
05	AC5	SOFTWARE	FUL A:802 , NAG A:803 , BMA A:804 , NAG A:806	BINDING SITE FOR RESIDUE MAN A 805
06	AC6	SOFTWARE	MAN A:805 , SIA A:811	BINDING SITE FOR RESIDUE NAG A 806
07	AC7	SOFTWARE	BMA A:804 , NAG A:809 , NAG B:809	BINDING SITE FOR RESIDUE MAN A 808
08	AC8	SOFTWARE	PHE A:241 , MAN A:808 , GAL A:810	BINDING SITE FOR RESIDUE NAG A 809
09	AC9	SOFTWARE	NAG A:809 , SIA A:811	BINDING SITE FOR RESIDUE GAL A 810
10	BC1	SOFTWARE	PHE A:241 , PHE A:243 , BMA A:804 , NAG A:806 , GAL A:810	BINDING SITE FOR RESIDUE SIA A 811
11	BC2	SOFTWARE	ASN B:297 , FUL B:802 , NAG B:803	BINDING SITE FOR RESIDUE NAG B 801
12	BC3	SOFTWARE	ASN B:297 , NAG B:801 , SER C:129	BINDING SITE FOR RESIDUE FUL B 802
13	BC4	SOFTWARE	TYR B:296 , NAG B:801 , BMA B:804	BINDING SITE FOR RESIDUE NAG B 803
14	BC5	SOFTWARE	NAG B:803 , MAN B:805 , NAG B:806 , MAN B:808	BINDING SITE FOR RESIDUE BMA B 804
15	BC6	SOFTWARE	BMA B:804 , NAG B:806	BINDING SITE FOR RESIDUE MAN B 805
16	BC7	SOFTWARE	BMA B:804 , MAN B:805 , GAL B:807	BINDING SITE FOR RESIDUE NAG B 806
17	BC8	SOFTWARE	PRO B:245 , LYS B:246 , ASP B:249 , PRO B:257 , NAG B:806 , SIA B:812	BINDING SITE FOR RESIDUE GAL B 807
18	BC9	SOFTWARE	PHE B:243 , BMA B:804 , NAG B:809	BINDING SITE FOR RESIDUE MAN B 808
19	CC1	SOFTWARE	MAN A:808 , PHE B:241 , PHE B:243 , MAN B:808 , GAL B:810	BINDING SITE FOR RESIDUE NAG B 809
20	CC2	SOFTWARE	NAG B:809 , SIA B:811	BINDING SITE FOR RESIDUE GAL B 810
21	CC3	SOFTWARE	PRO A:395 , GAL B:810	BINDING SITE FOR RESIDUE SIA B 811
22	CC4	SOFTWARE	GLU B:258 , LYS B:290 , ARG B:292 , GLN B:294 , GAL B:807	BINDING SITE FOR RESIDUE SIA B 812
23	CC5	SOFTWARE	THR B:359 , LYS B:414 , ASN C:145 , HIS C:148 , NAG C:201 , FUL C:202	BINDING SITE FOR RESIDUE NDG C 200
24	CC6	SOFTWARE	LYS B:360 , NDG C:200 , FUL C:202 , MAN C:203	BINDING SITE FOR RESIDUE NAG C 201
25	CC7	SOFTWARE	GLN B:311 , NDG C:200 , NAG C:201	BINDING SITE FOR RESIDUE FUL C 202
26	CC8	SOFTWARE	ASN A:384 , NAG C:201 , MAN C:204 , BMA C:205	BINDING SITE FOR RESIDUE MAN C 203
27	CC9	SOFTWARE	ARG A:344 , GLU A:345 , GLN A:347 , LYS B:317 , LYS B:360 , MAN C:203	BINDING SITE FOR RESIDUE MAN C 204
28	DC1	SOFTWARE	TYR A:349 , VAL A:422 , GLU B:356 , MAN C:203	BINDING SITE FOR RESIDUE BMA C 205
29	DC2	SOFTWARE	ASN C:64	BINDING SITE FOR RESIDUE NAG C 206
30	DC3	SOFTWARE	ARG A:255	BINDING SITE FOR RESIDUE GOL A 600
31	DC4	SOFTWARE	ARG A:355 , LEU B:443 , SER B:444	BINDING SITE FOR RESIDUE GOL B 601
32	DC5	SOFTWARE	ARG B:355	BINDING SITE FOR RESIDUE GOL B 603

Asymmetric/Biological Unit

No.	Residues
1	A:261	-	A:321
2	A:367	-	A:425
3	B:261	-	B:321
4	B:367	-	B:425
5	C:29	-	C:71
6	C:110	-	C:154

Asymmetric/Biological Unit

No.	Residues
1	Tyr B:373	-	Pro B:374

Asymmetric/Biological Unit (5, 7)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_054857	Q	63	R	FCG2A_HUMAN	Polymorphism	9427398	C	Q	30	R
2	UniProt	VAR_054858	M	140	V	FCG2A_HUMAN	Polymorphism	4986941	C	M	107	V
3	UniProt	VAR_003955	H	167	R	FCG2A_HUMAN	Polymorphism	1801274	C	R	134	R
4	UniProt	VAR_003887	D	239	E	IGHG1_HUMAN	Polymorphism	---	A/B	E	356	E
5	UniProt	VAR_003888	L	241	M	IGHG1_HUMAN	Polymorphism	---	A/B	M	358	M

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

Asymmetric/Biological Unit (1, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	IG_MHC	PS00290	Immunoglobulins and major histocompatibility complex proteins signature.	IGHG1_HUMAN	81-87 306-312	2	- A:423-429 B:423-429

Asymmetric/Biological Unit (5, 8)

	ENSEMBL					UniProtKB			PDB
No.	Transcript ID	Exon	Exon ID	Genome Location	Length	ID	Location	Length	Count	Location	Length
1.1a	ENST00000271450	1a	ENSE00001170978	chr1:161475220-161475342	123	FCG2A_HUMAN	1-29	29	0	-	-
1.1g	ENST00000271450	1g	ENSE00000958752	chr1:161475777-161475797	21	FCG2A_HUMAN	29-36	8	0	-	-
1.1j	ENST00000271450	1j	ENSE00001651726	chr1:161476124-161476381	258	FCG2A_HUMAN	36-122	87	1	C:7-89	83
1.3a	ENST00000271450	3a	ENSE00001614571	chr1:161479610-161479864	255	FCG2A_HUMAN	122-207	86	1	C:89-173	85
1.4a	ENST00000271450	4a	ENSE00000958755	chr1:161480624-161480746	123	FCG2A_HUMAN	207-248	42	0	-	-
1.6a	ENST00000271450	6a	ENSE00001643425	chr1:161483685-161483722	38	FCG2A_HUMAN	248-260	13	0	-	-
1.8h	ENST00000271450	8h	ENSE00001170974	chr1:161487765-161489358	1594	FCG2A_HUMAN	261-317	57	0	-	-

2.1	ENST00000390549	1	ENSE00001838294	chr14:106209408-106209114	295	IGHG1_HUMAN	1-99	99	0	-	-
2.2	ENST00000390549	2	ENSE00001719055	chr14:106208722-106208678	45	IGHG1_HUMAN	99-114	16	2	A:231-231 B:231-231	1 1
2.3b	ENST00000390549	3b	ENSE00001776617	chr14:106208559-106208230	330	IGHG1_HUMAN	114-224	111	2	A:231-341 B:231-341	111 111
2.4c	ENST00000390549	4c	ENSE00001837466	chr14:106208132-106207675	458	IGHG1_HUMAN	224-330	107	2	A:341-444 B:341-444	104 104

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:214
 aligned with IGHG1_HUMAN | P01857 from UniProtKB/Swiss-Prot  Length:330

    Alignment length:214
                                   123       133       143       153       163       173       183       193       203       213       223       233       243       253       263       273       283       293       303       313       323    
          IGHG1_HUMAN   114 APELLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVKFNWYVDGVEVHNAKTKPREEQYNSTYRVVSVLTVLHQDWLNGKEYKCKVSNKALPAPIEKTISKAKGQPREPQVYTLPPSRDELTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLS 327
               SCOP domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ................hhhhh...............................................................................................ee.....hhhhhh..eeeeeeeee........eeee........ee............eeeeeeeeehhhhhhh...eeee................. Sec.struct. author
                 SAPs(SNPs) -----------------------------------------------------------------------------------------------------------------------------E-M-------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------IG_MHC --------------- PROSITE
           Transcript 2 (1) 2-------------------------------------------------------------------------------------------------------------Exon 2.4c  PDB: A:341-444 UniProt: 224-330 [INCOMPLETE]                                                  Transcript 2 (1)
           Transcript 2 (2) Exon 2.3b  PDB: A:231-341 UniProt: 114-224                                                                     ------------------------------------------------------------------------------------------------------- Transcript 2 (2)
                 3ry6 A 231 APELLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPQVKFNWYVDGVQVHNAKTKPREQQYNSTYRVVSVLTVLHQNWLDGKEYKCKVSNKALPAPIEKTISKAKGQPREPQVYTLPPSREEMTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLS 444
                                   240       250       260       270       280       290       300       310       320       330       340       350       360       370       380       390       400       410       420       430       440

Chain B from PDB  Type:PROTEIN  Length:214
 aligned with IGHG1_HUMAN | P01857 from UniProtKB/Swiss-Prot  Length:330

    Alignment length:214
                                   123       133       143       153       163       173       183       193       203       213       223       233       243       253       263       273       283       293       303       313       323    
          IGHG1_HUMAN   114 APELLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVKFNWYVDGVEVHNAKTKPREEQYNSTYRVVSVLTVLHQDWLNGKEYKCKVSNKALPAPIEKTISKAKGQPREPQVYTLPPSRDELTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLS 327
               SCOP domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .....................................................................................................................ee..................eeeee......eee..........ee..........eee.ee...............eee.........ee...... Sec.struct. author
                 SAPs(SNPs) -----------------------------------------------------------------------------------------------------------------------------E-M-------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------IG_MHC --------------- PROSITE
           Transcript 2 (1) 2-------------------------------------------------------------------------------------------------------------Exon 2.4c  PDB: B:341-444 UniProt: 224-330 [INCOMPLETE]                                                  Transcript 2 (1)
           Transcript 2 (2) Exon 2.3b  PDB: B:231-341 UniProt: 114-224                                                                     ------------------------------------------------------------------------------------------------------- Transcript 2 (2)
                 3ry6 B 231 APELLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPQVKFNWYVDGVQVHNAKTKPREQQYNSTYRVVSVLTVLHQNWLDGKEYKCKVSNKALPAPIEKTISKAKGQPREPQVYTLPPSREEMTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLS 444
                                   240       250       260       270       280       290       300       310       320       330       340       350       360       370       380       390       400       410       420       430       440

Chain C from PDB  Type:PROTEIN  Length:167
 aligned with FCG2A_HUMAN | P12318 from UniProtKB/Swiss-Prot  Length:317

    Alignment length:167
                                    49        59        69        79        89        99       109       119       129       139       149       159       169       179       189       199       
          FCG2A_HUMAN    40 KAVLKLEPPWINVLQEDSVTLTCQGARSPESDSIQWFHNGNLIPTHTQPSYRFKANNNDSGEYTCQTGQTSLSDPVHLTVLSEWLVLQTPHLEFQEGETIMLRCHSWKDKPLVKVTFFQNGKSQKFSHLDPTFSIPQANHSHSGDYHCTGNIGYTLFSSKPVTITVQ 206
               SCOP domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....................................................................................................eee..hhhhh.ee...ee.............eee............ee..ee..ee........... Sec.struct. author
                 SAPs(SNPs) -----------------------R----------------------------------------------------------------------------V--------------------------R--------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
           Transcript 1 (1) Exon 1.1j  PDB: C:7-89 UniProt: 36-122 [INCOMPLETE]                                ------------------------------------------------------------------------------------ Transcript 1 (1)
           Transcript 1 (2) ----------------------------------------------------------------------------------Exon 1.3a  PDB: C:89-173 UniProt: 122-207 [INCOMPLETE]                                Transcript 1 (2)
                 3ry6 C   7 KAVLKLEPPWINVLQEDSVTLTCQGARSPESDSIQWFHNGNLIPTHTQPSYRFKANNNDSGEYTCQTGQTSLSDPVHLTVLSEWLVLQTPHLEFQEGETIMLRCHSWKDKPLVKVTFFQNGKSQKFSRLDPTFSIPQANHSHSGDYHCTGNIGYTLFSSKPVTITVQ 173
                                    16        26        36        46        56        66        76        86        96       106       116       126       136       146       156       166

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 '\|'

(no "SCOP Domain" information available for 3RY6)

(no "CATH Domain" information available for 3RY6)

(no "Pfam Domain" information available for 3RY6)

Asymmetric/Biological Unit(hide GO term definitions)

Chain A,B (IGHG1_HUMAN | P01857)

molecular function
	GO:0003823	antigen binding	Interacting selectively and non-covalently with an antigen, any substance which is capable of inducing a specific immune response and of reacting with the products of that response, the specific antibody or specifically sensitized T-lymphocytes, or both. Binding may counteract the biological activity of the antigen.
	GO:0034987	immunoglobulin receptor binding	Interacting selectively and non-covalently with one or more specific sites on an immunoglobulin receptor molecule.
	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:0004252	serine-type endopeptidase activity	Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).
biological process
	GO:0050853	B cell receptor signaling pathway	A series of molecular signals initiated by the cross-linking of an antigen receptor on a B cell.
	GO:0038096	Fc-gamma receptor signaling pathway involved in phagocytosis	An Fc-gamma receptor signaling pathway that contributes to the endocytic engulfment of external particulate material by phagocytes.
	GO:0006956	complement activation	Any process involved in the activation of any of the steps of the complement cascade, which allows for the direct killing of microbes, the disposal of immune complexes, and the regulation of other immune processes; the initial steps of complement activation involve one of three pathways, the classical pathway, the alternative pathway, and the lectin pathway, all of which lead to the terminal complement pathway.
	GO:0006958	complement activation, classical pathway	Any process involved in the activation of any of the steps of the classical pathway of the complement cascade which allows for the direct killing of microbes, the disposal of immune complexes, and the regulation of other immune processes.
	GO:0042742	defense response to bacterium	Reactions triggered in response to the presence of a bacterium that act to protect the cell or organism.
	GO:0045087	innate immune response	Innate immune responses are defense responses mediated by germline encoded components that directly recognize components of potential pathogens.
	GO:0006911	phagocytosis, engulfment	The internalization of bacteria, immune complexes and other particulate matter or of an apoptotic cell by phagocytosis, including the membrane and cytoskeletal processes required, which involves one of three mechanisms: zippering of pseudopods around a target via repeated receptor-ligand interactions, sinking of the target directly into plasma membrane of the phagocytosing cell, or induced uptake via an enhanced membrane ruffling of the phagocytosing cell similar to macropinocytosis.
	GO:0006910	phagocytosis, recognition	The initial step in phagocytosis involving adhesion to bacteria, immune complexes and other particulate matter, or an apoptotic cell and based on recognition of factors such as bacterial cell wall components, opsonins like complement and antibody or protein receptors and lipids like phosphatidyl serine, and leading to intracellular signaling in the phagocytosing cell.
	GO:0050871	positive regulation of B cell activation	Any process that activates or increases the frequency, rate or extent of B cell activation.
	GO:0006508	proteolysis	The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.
cellular component
	GO:0072562	blood microparticle	A phospholipid microvesicle that is derived from any of several cell types, such as platelets, blood cells, endothelial cells, or others, and contains membrane receptors as well as other proteins characteristic of the parental cell. Microparticles are heterogeneous in size, and are characterized as microvesicles free of nucleic acids.
	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: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.
	GO:0005615	extracellular space	That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.
	GO:0042571	immunoglobulin complex, circulating	An immunoglobulin complex that is secreted into extracellular space and found in mucosal areas or other tissues or circulating in the blood or lymph. In its canonical form, a circulating immunoglobulin complex is composed of two identical heavy chains and two identical light chains, held together by disulfide bonds. Some forms of are polymers of the basic structure and contain additional components such as J-chain and the secretory component.

Chain C (FCG2A_HUMAN | P12318)

molecular function
	GO:0019864	IgG binding	Interacting selectively and non-covalently with an immunoglobulin of an IgG isotype.
	GO:0005515	protein binding	Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
biological process
	GO:0038096	Fc-gamma receptor signaling pathway involved in phagocytosis	An Fc-gamma receptor signaling pathway that contributes to the endocytic engulfment of external particulate material by phagocytes.
	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.
cellular component
	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: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.

Asymmetric/Biological Unit
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	Cis Peptide Bonds
		Tyr B:373 - Pro B:374	[ RasMol ]

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	3ry6
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	IGHG1_HUMAN \| P01857
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Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (8, 33)

Sites (32, 32)

SS Bonds (6, 6)

Cis Peptide Bonds (1, 1)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (5, 7)

PROSITE Motifs (1, 2)

Exons (5, 8)

Sequences/Alignments

Classification and Annotation

SCOP Domains (0, 0)

CATH Domains (0, 0)

Pfam Domains (0, 0)

Gene Ontology (25, 28)

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Related Entries

Entries Sharing at Least One Protein Chain (UniProt ID)

Related Entries Specified in the PDB File