| Type: | Domain | Name: | Calycin-like |
| Description: | Calycins form a large protein superfamily that share similar beta-barrel structures. Calycins can be divided into families that include lipocalins, fatty acid binding proteins, triabin, and thrombin inhibitor []. Of these families, the lipocalin family () is the largest and functionally the most diverse. Lipocalins are extracellular proteins that share several common recognition properties such as ligand binding, receptor binding and the formation of complexes with other macromolecules. Lipocalins include the retinol binding protein, lipocalin allergen, aphrodisin (a sex hormone), alpha-2U-globulin, prostaglandin D synthase, beta-lactoglobulin, bilin-binding protein, and the nitrophorins [, , , ]. Bacterial hypothetical proteins YodA from Escherichia coliand YwiB from Bacillus subtilisshare a similar calycin beta-barrel structure. Part of the YodA hypothetical protein has a calycin-like structure [].This entry represents calycin as well as some other proteins that share a similar calycin beta-barrel structure, including UPF0678 fatty acid-binding protein-like proteins []. | Short Name: | Calycin-like |
| DB identifier | Type | Name |
|---|---|---|
| IPR022271 | Family | Lipocalin, ApoD type |
| IPR002345 | Family | Lipocalin |
| IPR002968 | Family | Alpha-1-microglobulin |
| IPR002969 | Family | Apolipoprotein D |
| IPR002970 | Family | Tick histamine-binding protein |
| IPR003057 | Family | Invertebrate colouration protein |
| IPR022734 | Family | Apolipoprotein M |
| IPR015231 | Family | Protein of unknown function DUF1934 |
