SAbDab Antibody Annotation SAbDab Database Homepage

ChainChain ClassChain SubclassChain TypeAntigen Name(s) Provenance Source
A [auth I]Heavy ChainIGHV3 -spike protein s1SAbDab (2024-06-07)
B [auth M]Light ChainIGKV4 Kappaspike protein s1SAbDab (2024-06-07)
C [auth H]Heavy ChainIGHV3 -spike protein s1SAbDab (2024-06-07)
D [auth L]Light ChainIGLV2 Lambdaspike protein s1SAbDab (2024-06-07)

Thera-SAbDab Antibody Annotation Thera-SAbDab Database Homepage

ChainNameTargetProvenance Source
A [auth I] Cilgavimab SARS-CoV-2 Spike RBDTherapeutic SAbDab (2024-06-07)
B [auth M] Cilgavimab SARS-CoV-2 Spike RBDTherapeutic SAbDab (2024-06-07)
C [auth H] Sipavibart SARS-CoV-2 Spike RBDTherapeutic SAbDab (2024-06-07)
D [auth L] Sipavibart SARS-CoV-2 Spike RBDTherapeutic SAbDab (2024-06-07)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
E [auth A]PF09408Betacoronavirus spike glycoprotein S1, receptor binding (bCoV_S1_RBD)Betacoronavirus spike glycoprotein S1, receptor bindingThis entry represents the receptor binding domain (S1 RBD) of the betacoronavirus spike glycoprotein. The spike glycoprotein is arranged in trimers on the surface of the viral membrane and is essential for viral entry. The spike protein is transla ...This entry represents the receptor binding domain (S1 RBD) of the betacoronavirus spike glycoprotein. The spike glycoprotein is arranged in trimers on the surface of the viral membrane and is essential for viral entry. The spike protein is translated as a large polypeptide that is subsequently cleaved to the distal S1, responsible for receptor binding, and the membrane-anchored S2 responsible for membrane fusion [1]. The coronavirus (SARS-CoV) S1 subunit is composed of two distinct domains: an N-terminal domain (S1 NTD) and a receptor-binding domain (S1 RBD) also referred to as the S1 CTD or domain B. Each of these domains have been implicated in binding to host receptors. However, most coronaviruses are not known to utilise both the S1 NTD and S1 RBD for viral entry [2]. SARS-CoV makes use of its S1 RBD to bind to the human angiotensin-converting enzyme 2 (ACE2) as its host receptor [3,4].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A [auth I]AZD1061 heavy chain---
B [auth M]AZD1061 light chain---
C [auth H]AZD3152 heavy chain---
D [auth L]AZD3152 light chain---
E [auth A]Spike protein S1