3GI9 | pdb_00003gi9

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
C	d3gi9c1	Membrane and cell surface proteins and peptides	SNF-like	SNF-like	Amino acid antiporter-like	Amino acid, polyamine, and organocation (APC) transporter ApcT	Methanococcus jannaschii (Methanocaldococcus jannaschii ) [TaxId: 2190 ],	SCOPe (2.08)
C	d3gi9c2	Artifacts	Tags	Tags	Tags	C-terminal Tags	Methanococcus jannaschii (Methanocaldococcus jannaschii ) [TaxId: 2190 ],	SCOPe (2.08)
B [auth H]	d3gi9h_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	automated matches	(Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
A [auth L]	d3gi9l2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	(Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
A [auth L]	d3gi9l1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C	SCOP2B Superfamily	SNF-like	8092928	3001654	SCOP2B (2022-06-29)

Chains	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
C	e3gi9C1	A: HTH	X: HTH	H: tetra-helical, lambda repressor-like	T: YgbB	F:	ECOD (20:10:01)
B [auth H]	e3gi9H1	A: HTH	X: HTH	H: tetra-helical, lambda repressor-like	T: YgbB	F:	ECOD (20:10:01)
A [auth L]	e3gi9L1	A: HTH	X: HTH	H: tetra-helical, lambda repressor-like	T: YgbB	F:	ECOD (20:10:01)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C	1.20.1740.10	Mainly Alpha	Up-down Bundle	Amino acid/polyamine transporter I	Amino acid/polyamine transporter I	CATH (4.3.0)
B [auth H]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
A [auth L]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)

Chain	Protein Name	Description	Organism Name	Gene Allele Name(s)	Domain Name(s)	Receptor Type	Receptor Description	Provenance Source
B [auth H]	7F11 mAb, anti-ApcT	VH-CH1	Mus musculus (house mouse)	IGHV1-6902, IGHJ401, IGHG2B*02	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-2B_KAPPA	IMGT (202609-0)
A [auth L]	7F11 mAb, anti-ApcT	L-KAPPA	Mus musculus (house mouse)	IGKV8-2401, IGKJ102, IGKJ201, IGKC01, IGKC*02	V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA	IG	FAB-GAMMA-2B_KAPPA	IMGT (202609-0)

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B [auth H]	Heavy Chain	IGHV1	-	uncharacterized protein mj0609	SAbDab (2026-03-13)
A [auth L]	Light Chain	IGKV8	Kappa	uncharacterized protein mj0609	SAbDab (2026-03-13)

Chains	Accession	Name	Description	Comments	Source
C	PF13520	Amino acid permease (AA_permease_2)	Amino acid permease	-	Family

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C	Uncharacterized protein MJ0609	transporter activity transmembrane transporter activity	-	cell periphery cellular anatomical structure plasma membrane membrane
B [auth H]	7F11 Anti-ApcT Monoclonal Fab Heavy Chain	-	-	-
A [auth L]	7F11 Anti-ApcT Monoclonal Fab Light Chain	-	-	-

Chains	Accession	Name	Type
C	IPR002293	Amino acid/polyamine transporter I	Family
C	IPR050367	Amino acid-polyamine-organocation superfamily	Family

Chains	External Link	Comment
C	PDBTM	Annotated as membrane protein by PDBTM

Chains	External Link	Comment
C	MemProtMD	Annotated as membrane protein by MemProtMD

Chains	Resource Link	Group	Subgroup	Protein
C	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Amino Acid/Polyamine/Organocation (APC) Superfamily	apo ApcT Na⁺-independent Amino Acid Transporter

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.

.id_divider{ color: #ccc; padding: 0 10px 0 10px; } .extended_id_info{ color: #ccc; font-size: 18px; position: relative; top: -10px; left: 4px; } 3GI9 | pdb_00003gi9