B1 domain

Available protein structures:
PDB	IPR003147 PF02246 (ECOD; PDBsum)
AlphaFold	IPR003147; PF02246;

B1
B1
	antibody-antigen complex
Identifiers
Symbol	B1
Pfam	PF02246
InterPro	IPR003147
SMART	PB1
SCOP2	1ipg / SCOPe / SUPFAM
PDB
Available protein structures:
PDB	IPR003147 PF02246 (ECOD; PDBsum)
AlphaFold	IPR003147; PF02246;

In molecular biology, the protein domain b1 refers to the domain b1 of Protein L. L is a bacterial protein with immunoglobulin (Ig) light chain-binding properties. It contains a number of homologous b1 repeats towards the N terminus. These repeats have been found to be responsible for the interaction of protein L with Ig light chains.^[1] N-terminus domain contains five homologous B1 repeats of 72-76 amino acids each.^[1]

References

^ ^a ^b Kastern W, Sjöbring U, Björck L (June 1992). "Structure of peptostreptococcal protein L and identification of a repeated immunoglobulin light chain-binding domain". J. Biol. Chem. 267 (18): 12820–5. PMID 1618782.

This article incorporates text from the public domain Pfam and InterPro: IPR003147

[pmid1618782-1] Kastern W, Sjöbring U, Björck L (June 1992). "Structure of peptostreptococcal protein L and identification of a repeated immunoglobulin light chain-binding domain". J. Biol. Chem. 267 (18): 12820–5. PMID 1618782.

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