Crystal structure of human IGA2M1 FC fragment-FC-alpha receptor (CD89) complex. Determined by X-ray diffraction at 2.3 Å resolution. Released 24 Jun 2026.
Explore 9OV2 in 3D Show helices and sheets RCSB PDB PDBe
9OV2 contains 14 α-helices and 39 β-strands across 2 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.
| Element | Residues | Length | Sheet |
|---|---|---|---|
| β-strand | 245-249 | 5 | 1 |
| α-helix | 250-252 | 3 | |
| α-helix | 253-258 | 6 | |
| β-strand | 264-271 | 8 | 1 |
| β-strand | 278-281 | 4 | 2 |
| β-strand | 290-291 | 2 | 1 |
| β-strand | 295-296 | 2 | 1 |
| β-strand | 302-308 | 7 | 1 |
| α-helix | 312-316 | 5 | |
| β-strand | 321-326 | 6 | 2 |
| β-strand | 334-338 | 5 | 2 |
| β-strand | 345 | 1 | 3 |
| α-helix | 346-347 | 2 | |
| β-strand | 348-352 | 5 | 4 |
| α-helix | 353-355 | 3 | |
| α-helix | 356-361 | 6 | |
| β-strand | 364-374 | 11 | 4 |
| β-strand | 375 | 1 | 3 |
| β-strand | 380-385 | 6 | 5 |
| β-strand | 388-389 | 2 | 5 |
| α-helix | 390-391 | 2 | |
| α-helix | 392-394 | 3 | |
| β-strand | 395-397 | 3 | 4 |
| α-helix | 398-400 | 3 | |
| β-strand | 401-402 | 2 | 4 |
| α-helix | 403-404 | 2 | |
| β-strand | 411-420 | 10 | 4 |
| α-helix | 421-425 | 5 | |
| β-strand | 430-435 | 6 | 5 |
| β-strand | 443-448 | 6 | 5 |
| Element | Residues | Length | Sheet |
|---|---|---|---|
| α-helix | 7-9 | 3 | |
| β-strand | 10-12 | 3 | 6 |
| β-strand | 17-19 | 3 | 7 |
| β-strand | 24-28 | 5 | 6 |
| β-strand | 36-43 | 8 | 8 |
| β-strand | 46-54 | 9 | 8 |
| β-strand | 63-66 | 4 | 6 |
| α-helix | 71-73 | 3 | |
| β-strand | 75-83 | 9 | 8 |
| β-strand | 87-96 | 10 | 8 |
| β-strand | 97-99 | 3 | 7 |
| β-strand | 106-109 | 4 | 9 |
| β-strand | 114-115 | 2 | 10 |
| β-strand | 120-126 | 7 | 9 |
| β-strand | 134-139 | 6 | 11 |
| β-strand | 149-150 | 2 | 11 |
| β-strand | 156-161 | 6 | 9 |
| α-helix | 164-166 | 3 | |
| β-strand | 168-175 | 8 | 11 |
| β-strand | 182 | 1 | 7 |
| β-strand | 183 | 1 | 11 |
| β-strand | 190-192 | 3 | 11 |
| β-strand | 193-194 | 2 | 10 |
| Molecule | Chains | Type | Length | Organism | UniProt |
|---|---|---|---|---|---|
| IGA2M1 fc fragment | A | protein | 214 | Homo sapiens | Q6MZV6 (AlphaFold model) |
| Immunoglobulin alpha Fc receptor | C | protein | 207 | Homo sapiens | P24071 (AlphaFold model) |
>9OV2_1 IGA2M1 FC FRAGMENT (chains A) CCHPRLSLHRPALEDLLLGSEANLTCTLTGLRDASGATFTWTPSSGKSAVQGPPERDLCG CYSVSSVLPGCAQPWNHGETFTCTAAHPELKTPLTANITKSGNTFRPEVHLLPPPSEELA LNELVTLTCLARGFSPKDVLVRWLQGSQELPREKYLTWASRQEPSQGTTTFAVTSILRVA AEDWKKGDTFSCMVGHEALPLAFTQKTIDRLAGK
>9OV2_2 Immunoglobulin alpha Fc receptor (chains C) QEGDFPMPFISAKSSPVIPLDGSVKIQCQAIREAYLTQLMIIKNSTYREIGRRLKFWNET DPEFVIDHMDANKAGRYQCQYRIGHYRFRYSDTLELVVTGLYGKPFLSADRGLVLMPGEN ISLTCSSAHIPFDRFSLAKEGELSLPQHQSGEHPANFSLGPVDLNVSGIYRCYGWYNRSP YLWSFPSNALELVVTAIDGRAHHHHHH
| ID | Name | Formula | Copies |
|---|---|---|---|
| NAG | 2-acetamido-2-deoxy-beta-D-glucopyranose | C8 H15 N O6 | 3 |
Water and common crystallization additives (CL) are not listed.
Crystal structure of human IGA2M1 FC fragment-FC-alpha receptor (CD89) complex. Chandravanshi, M., Korzeniowski, M., Tolbert, W.D. et al. To be published.
Other PDB entries of the same protein (UniProt Q6MZV6 (AlphaFold model), which also has an AlphaFold model), best resolution first:
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