5MU0 | pdb_00005mu0

ACC1 Fab fragment in complex with citrullinated C1 epitope of CII (IA03)

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
SAbDab Antibody Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Protein Modification Annotation

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
O	Tubulin_C	e5mu0O1	A: alpha bundles	X: gH main domain	H: gH main domain	T: gH main domain	F: Tubulin_C	ECOD (develop294)
M	Tubulin_C	e5mu0M1	A: alpha bundles	X: gH main domain	H: gH main domain	T: gH main domain	F: Tubulin_C	ECOD (develop294)
K	Tubulin_C	e5mu0K1	A: alpha bundles	X: gH main domain	H: gH main domain	T: gH main domain	F: Tubulin_C	ECOD (develop294)
I	Tubulin_C	e5mu0I1	A: alpha bundles	X: gH main domain	H: gH main domain	T: gH main domain	F: Tubulin_C	ECOD (develop294)
G	Tubulin_C	e5mu0G1	A: alpha bundles	X: gH main domain	H: gH main domain	T: gH main domain	F: Tubulin_C	ECOD (develop294)
E	Tubulin_C	e5mu0E1	A: alpha bundles	X: gH main domain	H: gH main domain	T: gH main domain	F: Tubulin_C	ECOD (develop294)
C	Tubulin_C	e5mu0C1	A: alpha bundles	X: gH main domain	H: gH main domain	T: gH main domain	F: Tubulin_C	ECOD (develop294)
A	Tubulin_C	e5mu0A1	A: alpha bundles	X: gH main domain	H: gH main domain	T: gH main domain	F: Tubulin_C	ECOD (develop294)
P	Tubulin_C	e5mu0P1	A: alpha bundles	X: gH main domain	H: gH main domain	T: gH main domain	F: Tubulin_C	ECOD (develop294)
N	Tubulin_C	e5mu0N1	A: alpha bundles	X: gH main domain	H: gH main domain	T: gH main domain	F: Tubulin_C	ECOD (develop294)
L	Tubulin_C	e5mu0L1	A: alpha bundles	X: gH main domain	H: gH main domain	T: gH main domain	F: Tubulin_C	ECOD (develop294)
J	Tubulin_C	e5mu0J1	A: alpha bundles	X: gH main domain	H: gH main domain	T: gH main domain	F: Tubulin_C	ECOD (develop294)
H	Tubulin_C	e5mu0H1	A: alpha bundles	X: gH main domain	H: gH main domain	T: gH main domain	F: Tubulin_C	ECOD (develop294)
F	Tubulin_C	e5mu0F1	A: alpha bundles	X: gH main domain	H: gH main domain	T: gH main domain	F: Tubulin_C	ECOD (develop294)
D	Tubulin_C	e5mu0D1	A: alpha bundles	X: gH main domain	H: gH main domain	T: gH main domain	F: Tubulin_C	ECOD (develop294)
B	Tubulin_C	e5mu0B1	A: alpha bundles	X: gH main domain	H: gH main domain	T: gH main domain	F: Tubulin_C	ECOD (develop294)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
O	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
M	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
K	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
I	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
G	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
E	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
C	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
P	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
N	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
L	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
J	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
H	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
F	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
D	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)

IMGT Antibody Annotation IMGT Database Homepage

Chain	Protein Name	Description	Organism Name	Gene Allele Name(s)	Domain Name(s)	Receptor Type	Receptor Description	Provenance Source
A, C, E, G, I A, C, E, G, I, K, M, O	ACC1 Fab	VH-CH1	Mus musculus (house mouse)	IGHV6-601, IGHJ201, IGHG2C01, IGHG2C02, IGHG2C*03	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-2C_KAPPA	IMGT (202610-0)
B, D, F, H, J B, D, F, H, J, L, N, P	ACC1 Fab	L-KAPPA	Mus musculus (house mouse)	IGKV3-201, IGKJ201, IGKC01, IGKC02	V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA	IG	FAB-GAMMA-2C_KAPPA	IMGT (202610-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
A, C, E, G, I A, C, E, G, I, K, M, O	Heavy Chain	IGHV6	-	ia03 peptide containing the citrullinated c1 epitope ofcollagen type ii,collagen alpha-1(ii) chain,ia03 peptide containing the citrullinated c1 epitope of collagen type ii	SAbDab (2026-03-20)
B, D, F, H, J B, D, F, H, J, L, N, P	Light Chain	IGKV3	Kappa	ia03 peptide containing the citrullinated c1 epitope ofcollagen type ii,collagen alpha-1(ii) chain,ia03 peptide containing the citrullinated c1 epitope of collagen type ii	SAbDab (2026-03-20)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C, E, G, I A, C, E, G, I, K, M, O	heavy chain of ACC1 antibody Fab fragment	-	-	-
B, D, F, H, J B, D, F, H, J, L, N, P	light chain of ACC1 antibody Fab fragment	-	-	-
Q, R, S, T, U Q, R, S, T, U, V, W, X	IA03 peptide containing the citrullinated C1 epitope of collagen type II,Collagen alpha-1(II) chain,IA03 peptide containing the citrullinated C1 epitope of collagen type II	protein binding binding signaling receptor binding MHC class II protein binding MHC protein binding structural molecule activity extracellular matrix structural constituent extracellular matrix structural constituent conferring tensile strength identical protein binding protein homodimerization activity protein dimerization activity platelet-derived growth factor binding growth factor binding proteoglycan binding protein binding binding signaling receptor binding MHC class II protein binding MHC protein binding structural molecule activity extracellular matrix structural constituent extracellular matrix structural constituent conferring tensile strength identical protein binding protein homodimerization activity protein dimerization activity platelet-derived growth factor binding growth factor binding proteoglycan binding carbohydrate derivative binding cation binding ion binding metal ion binding small molecule binding	developmental process multicellular organism development multicellular organismal process skeletal system development connective tissue development anatomical structure development animal organ development tissue development cartilage development system development carbohydrate derivative metabolic process metabolic process cellular process primary metabolic process developmental process multicellular organism development multicellular organismal process skeletal system development connective tissue development anatomical structure development animal organ development tissue development cartilage development system development carbohydrate derivative metabolic process metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process proteoglycan metabolic process glycoprotein metabolic process limb development appendage development limb bud formation anatomical structure morphogenesis appendage morphogenesis anatomical structure formation involved in morphogenesis limb morphogenesis cellular response to stimulus negative regulation of extrinsic apoptotic signaling pathway in absence of ligand regulation of cellular process response to stimulus signal transduction in absence of ligand negative regulation of signaling signaling negative regulation of biological process regulation of signal transduction regulation of programmed cell death negative regulation of cell communication extrinsic apoptotic signaling pathway negative regulation of signal transduction in absence of ligand cell communication negative regulation of extrinsic apoptotic signaling pathway negative regulation of apoptotic signaling pathway negative regulation of cellular process extrinsic apoptotic signaling pathway in absence of ligand signal transduction regulation of signaling regulation of biological process cell surface receptor signaling pathway negative regulation of response to stimulus negative regulation of programmed cell death regulation of apoptotic process biological regulation cell death negative regulation of signal transduction regulation of extrinsic apoptotic signaling pathway apoptotic signaling pathway negative regulation of apoptotic process regulation of response to stimulus regulation of extrinsic apoptotic signaling pathway in absence of ligand regulation of cell communication apoptotic process programmed cell death regulation of apoptotic signaling pathway central nervous system development nervous system development epithelium development otic vesicle development ear development sensory organ development tube development inner ear development embryonic skeletal joint development embryonic organ morphogenesis chordate embryonic development embryonic morphogenesis embryo development embryonic skeletal joint morphogenesis embryo development ending in birth or egg hatching embryonic skeletal system development animal organ morphogenesis skeletal system morphogenesis embryonic organ development embryonic skeletal system morphogenesis ear morphogenesis sensory organ morphogenesis inner ear morphogenesis regulation of biosynthetic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of gene expression biosynthetic process regulation of macromolecule biosynthetic process regulation of metabolic process bone development endochondral ossification replacement ossification endochondral bone morphogenesis ossification bone morphogenesis cell aggregation cartilage condensation cellular component organization collagen fibril organization extracellular matrix organization cellular component organization or biogenesis extracellular structure organization external encapsulating structure organization heart development heart morphogenesis circulatory system development notochord development system process sensory perception nervous system process sensory perception of sound sensory perception of mechanical stimulus sensory perception of light stimulus visual perception multicellular organismal-level homeostasis homeostatic process anatomical structure homeostasis tissue homeostasis cartilage development involved in endochondral bone morphogenesis cellular developmental process cell differentiation chondrocyte differentiation roof of mouth development anterior head development head development cellular response to BMP stimulus cellular response to endogenous stimulus response to BMP cellular response to growth factor stimulus response to endogenous stimulus response to growth factor	protein-containing complex collagen trimer basement membrane cell periphery extracellular matrix cellular anatomical structure external encapsulating structure solid phase of interstitial matrix fibrillar collagen complex fibrillar collagen trimer complex of collagen trimers collagen type XI trimer supramolecular complex collagenous component of interstitial matrix protein-containing complex collagen trimer basement membrane cell periphery extracellular matrix cellular anatomical structure external encapsulating structure solid phase of interstitial matrix fibrillar collagen complex fibrillar collagen trimer complex of collagen trimers collagen type XI trimer supramolecular complex collagenous component of interstitial matrix interstitial matrix collagen type II trimer intracellular anatomical structure cytoplasm extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
Q, R, S, T, U Q, R, S, T, U, V, W, X	IPR008160	Collagen triple helix repeat	Repeat
Q, R, S, T, U Q, R, S, T, U, V, W, X	IPR000885	Fibrillar collagen, C-terminal	Domain
Q, R, S, T, U Q, R, S, T, U, V, W, X	IPR001007	VWFC domain	Domain
Q, R, S, T, U Q, R, S, T, U, V, W, X	IPR050149	Collagen superfamily	Family

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
Q, R, S, T, U Q, R, S, T, U, V, W, X	CIR	Parent Component: ARG RESID: AA0214 PSI-MOD : L-citrulline MOD:00219
Q, R, S, T, U Q, R, S, T, U, V, W, X	HYP	Parent Component: PRO RESID: AA0214 , AA0030 PSI-MOD : L-citrulline MOD:00219 , 4-hydroxy-L-proline MOD:00039

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.