Annotations: 8T03

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
C	Apc5_N	e8t03C1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Apc5_N	ECOD (v294.1)
E	SH2	e8t03E1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: SH2	ECOD (v294.1)
D	Apc5_N	e8t03D1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Apc5_N	ECOD (v294.1)
F	SH2	e8t03F1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: SH2	ECOD (v294.1)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C, E	Heavy Chain	IGHV8	-	protein myomaker	SAbDab (2026-03-27)
D, F	Light Chain	IGKV19	Kappa	protein myomaker	SAbDab (2026-03-27)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C, E	18G7 Fab heavy chain	-	-	-
D, F	18G7 Fab light chain	-	-	-
A, B	Protein myomaker	-	developmental process muscle structure development animal organ development anatomical structure development muscle organ development multicellular organismal process striated muscle adaptation system process response to stimulus regulation of system process positive regulation of biological process regulation of muscle hypertrophy positive regulation of response to stimulus muscle adaptation developmental process muscle structure development animal organ development anatomical structure development muscle organ development multicellular organismal process striated muscle adaptation system process response to stimulus regulation of system process positive regulation of biological process regulation of muscle hypertrophy positive regulation of response to stimulus muscle adaptation regulation of skeletal muscle hypertrophy positive regulation of skeletal muscle hypertrophy positive regulation of muscle adaptation regulation of multicellular organismal process muscle hypertrophy regulation of muscle adaptation regulation of biological process regulation of skeletal muscle adaptation biological regulation striated muscle hypertrophy muscle system process regulation of muscle system process regulation of response to stimulus positive regulation of muscle hypertrophy skeletal muscle adaptation positive regulation of multicellular organismal process skeletal muscle hypertrophy tissue regeneration skeletal muscle tissue regeneration cellular developmental process developmental growth myoblast fusion growth cell-cell fusion syncytium formation by cell-cell fusion myotube differentiation involved in skeletal muscle regeneration muscle cell differentiation regeneration myotube differentiation cell differentiation myoblast fusion involved in skeletal muscle regeneration cellular process striated muscle cell differentiation	cell periphery cellular anatomical structure plasma membrane membrane membrane-bounded organelle Golgi membrane intracellular anatomical structure Golgi apparatus intracellular membrane-bounded organelle endomembrane system intracellular organelle bounding membrane of organelle organelle cytoplasm cell periphery cellular anatomical structure plasma membrane membrane membrane-bounded organelle Golgi membrane intracellular anatomical structure Golgi apparatus intracellular membrane-bounded organelle endomembrane system intracellular organelle bounding membrane of organelle organelle cytoplasm organelle membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR021910	NGX6/PGAP6/MYMK	Family

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B	MemProtMD	Annotated as membrane protein by MemProtMD

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.