Annotations: 9B44

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	ecTbetaR2	e9b44A01	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: ecTbetaR2	ECOD (v294.2)
B	ecTbetaR2	e9b44B01	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: ecTbetaR2	ECOD (v294.2)

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
A, C [auth H]	Heavy Chain	IGHV1	-	-	SAbDab (2026-05-08)
B, D [auth L]	Light Chain	IGKV8	Kappa	-	SAbDab (2026-05-08)

Modified Residue(s)
Chain	Residue(s)	Description
A, C [auth H]	PCA	Parent Component: GLN : AA0031 : 2-pyrrolidone-5-carboxylic acid (Gln) MOD:00040 , 2-pyrrolidone-5-carboxylic acid (Glu) MOD:00420

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.

9B44 | pdb_00009b44