Macromolecule Annotations for the Entities in PDB 1IHR

Domain Annotation: CATH CATH Database (version 4.0.0) Homepage

Chains Domain Class Architecture Topology Homology
A 1ihrA00 Alpha Beta 2-Layer Sandwich TolA/TonB C-terminal domain TonB

Protein Family Annotation Pfam Database Homepage

Chains Pfam Accession Pfam Identifier Pfam Description Type Source
A PF03544 TonB_C Gram-negative bacterial TonB protein C-terminal Domain The TonB_C domain is the well-characterised C-terminal region of the TonB receptor molecule. This protein is bound to an inner membrane-bound protein ExbB via a globular domain and has a flexible middle region that is likely to help in positioning the C-terminal domain into the iron-transporter barrel in the outer membrane [1]. TonB_C interacts with the N-terminal TonB box of the outer membrane transporter that binds the Fe3+-siderophore complex. The barrel of the transporter, consisting of 22 beta-sheets and an inside plug, binds the iron complex in the barrel entrance [2]. PFAM PF03544

Gene Product Annotation Gene Ontology Consortium Homepage

Protein Modification Annotation

Type PDB Residue Nr. Description