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Protein Structures and Oligomeric States

Enter a protein name, UniProt accession or PDB ID. Name searches ask you to confirm the protein identity before related structures are queried.

Current Protein Identity：P0DP29 New Search
33PDB entries
33Biological assembly
61chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics

Difference tags compare only the current result set; every original PDB and assembly record remains separate.

Related-Structure Differences

Each row represents one biological assembly in one PDB entry; multiple monomers of the same protein are listed separately.

PDB Entry Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Experimental Method Experimental Conditions Structure Quality
3EK4 Calcium-saturated GCaMP2 Monomer Deposited 2008-09-18 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 3–149（147 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；298 K；0.1 M Magnesium formate dihydrate, 15% w/v Polyethylene glycol 3,350, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.65 Å R-free 0.280
3EK7 Calcium-saturated GCaMP2 dimer Deposited 2008-09-18 Assembly 1 Insufficient information Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 3–149（147 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 8 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；298 K；0.2 M lithium sulfate monohydrate, 0.1 M Tris-HCl pH 8.5, 30%(w/v) polyethylene glycol 4000, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 1.85 Å R-free 0.241
3EK8 Calcium-saturated GCaMP2 T116V/G87R mutant monomer Deposited 2008-09-19 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 3–149（147 aa）
Mutation：T116V, G87R Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；298 K；0.1 M Magnesium formate dihydrate, 15% w/v Polyethylene glycol 3,350, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.80 Å R-free 0.266
3EKH Calcium-saturated GCaMP2 T116V/K378W mutant monomer Deposited 2008-09-19 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 3–149（147 aa）
Mutation：T116V, K378W Non-standard monomer：Yes (specific site not provided by mmCIF) GOL GLYCEROL × 1 CA CALCIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；298 K；0.1 M Magnesium formate dihydrate, 15% w/v Polyethylene glycol 3,350, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.00 Å R-free 0.224
3EKJ Calcium-free GCaMP2 (calcium binding deficient mutant) Deposited 2008-09-19 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 3–149（147 aa）
Mutation：T329G, E334Q, D359G, E370Q, D396G, E407Q, D432G, E443Q Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；298 K；0.2 M Lithium sulfate monohydrate, 0.1 M BIS-TRIS pH 5.5, 25% w/v Polyethylene glycol 3,350, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.80 Å R-free 0.280
3EVR Crystal structure of Calcium bound monomeric GCAMP2 Deposited 2008-10-13 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 3–148（146 aa） Fragment：UNP P42212 residues 2-238, UNP P0DP29 residues 148-305
Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 4 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.00 Å R-free 0.190
3EVU Crystal structure of Calcium bound dimeric GCAMP2 Deposited 2008-10-13 Assembly 1 Insufficient information Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 3–148（146 aa） Fragment：UNP P11799 residues 1731-1749, UNP P42212 residues 2-144/147-238, UNP P0DP29 residues 3-238
Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 8 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 1.75 Å R-free 0.197
3SG2 Crystal Structure of GCaMP2-T116V,D381Y Deposited 2011-06-14 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 3–149（147 aa） Fragment：SEE REMARK 999
Mutation：T116V,D381Y Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；293 K；0.2 M ammonium acetate, 0.1 M Tris, pH 8.5, 25% PEG3350, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.00 Å R-free 0.207
3SG3 Crystal Structure of GCaMP3-D380Y Deposited 2011-06-14 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 3–149（147 aa） Fragment：SEE REMARK 999
Mutation：D380Y Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；293 K；0.2 M sodium chloride, 0.1 M Tris, pH 8.5, 25% PEG3350, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.10 Å R-free 0.199
3SG4 Crystal Structure of GCaMP3-D380Y, LP(linker 2) Deposited 2011-06-14 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 3–149（147 aa） Fragment：SEE REMARK 999
Mutation：D380Y, LP(linker 2) Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；293 K；0.2 M sodium chloride, 0.1 M Tris, pH 8.5, 25% PEG3350, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.40 Å R-free 0.213
3SG5 Crystal Structure of Dimeric GCaMP3-D380Y, QP(linker 1), LP(linker 2) Deposited 2011-06-14 Assembly 1 Insufficient information Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 3–149（147 aa） Fragment：SEE REMARK 999
Mutation：D380Y, QP(linker 1), LP(linker 2) Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 8 SO4 SULFATE ION × 8 GOL GLYCEROL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；293 K；0.1 M Bis-Tris, pH 6.5, 2 M ammonium sulfate, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 1.90 Å R-free 0.226
3SG6 Crystal Structure of Dimeric GCaMP2-LIA(linker 1) Deposited 2011-06-14 Assembly 1 Insufficient information Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 3–149（147 aa） Fragment：SEE REMARK 999
Mutation：LIA(linker 1) Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 8 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；293 K；0.2 M lithium sulfate, 0.1 M Tris, pH 8.5, 30% PEG4000, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 1.70 Å R-free 0.249
3SG7 Crystal Structure of GCaMP3-KF(linker 1) Deposited 2011-06-14 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 3–149（147 aa） Fragment：SEE REMARK 999
Mutation：KF(linker 1) Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；293 K；0.2 M ammonium sulfate, 0.1 M Tris, pH 8.5, 25% PEG3350, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 1.90 Å R-free 0.230
3WLC Crystal structure of dimeric GCaMP6m Deposited 2013-11-08 Assembly 1 Insufficient information Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 3–149（147 aa） Fragment：UNP RESIDUES 37-55, 149-238, 2-144, 3-149
Mutation：M153K, V163A, S175G, D180Y, T203V, A206K, H231L, F64L, V93I, N61D, D79Y, M77G, K78S, T80R, S82T, R91G Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 8 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；293 K；0.1M HEPES, 20% w/v PEG 3350, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.49 Å R-free 0.225
3WLD Crystal structure of monomeric GCaMP6m Deposited 2013-11-08 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 3–149（147 aa） Fragment：UNP RESIDUES 37-55, 149-238, 2-144, 3-149
Mutation：M153K, V163A, S175G, D180Y, T203V, A206K, H231L, F64L, V93I, N61D, D79Y, M77G, K78S, T80R, S82T, R91G Non-standard monomer：Yes (specific site not provided by mmCIF) CA CALCIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；293 K；0.1M HEPES, 18% w/v PEG 3350, pH 7.4, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.70 Å R-free 0.212
6CZQ A V-to-F substitution in SK2 channels causes Ca2+ hypersensitivity and improves locomotion in a C. elegans ALS model Deposited 2018-04-09 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain R 5–148（144 aa） Fragment：residues 5-148
Not recorded SO4 SULFATE ION × 3 CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.6；293.15 K；0.1 M Sodium citrate tribasic dihydrate 0.5 M Ammonium sulfate 1.5 M Lithium sulfate monohydrate
Resolution 2.20 Å R-free 0.249
6DMW Calmodulin-bound full-length rbTRPV5 Deposited 2018-06-05 Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain E 1–149（149 aa）
Not recorded CA CALCIUM ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 8.8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.40 Å
6MBA Crystal Structure of Human Nav1.4 CTerminal Domain in Complex with apo Calmodulin Deposited 2018-08-29 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–149（149 aa）
Not recorded CL CHLORIDE ION × 4 EDO 1,2-ETHANEDIOL × 1 CO3 CARBONATE ION × 1 TRS 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 6；293 K；0.1M MES pH 6.0, 20% PEG 6000, 1.0M LiCl
Resolution 1.80 Å R-free 0.234
6MC9 Crystal Structure of Human Nav1.4 C-Terminal (1599-1754) domain in complex with calcium-bound calmodulin Deposited 2018-08-30 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–149（149 aa）
Not recorded CA CALCIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 6；293 K；0.1M MES pH 6.0, 20% PEG 6000, 1.0M LiCl
Resolution 3.30 Å R-free 0.285
7NQC Calmodulin extracts the Ras family protein RalA from lipid bilayers by engagement with two membrane targeting motifs Deposited 2021-03-01 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–149（149 aa）
Not recorded CA CALCIUM ION × 4 ULW [(2~{Z},6~{Z})-3,7,11-trimethyldodeca-2,6-dienyl] 3-[2,5-bis(oxidanylidene)pyrrolidin-1-yl]propanoate × 1 SOLUTION NMR
NMR measurement conditions pH 6.7；298 K；Ionic strength (raw mmCIF value) 109；Pressure 1
NMR sample composition 0.8 mM [U-15N] Calmodulin, 0.8 mM NA RalA HVR, 90% H2O/10% D2O | 90% H2O/10% D2O
NMR sample composition 1.1 mM U-15N, 13C Calmodulin, 1.1 mM NA RalA HVR, 90% H2O/10% D2O | 90% H2O/10% D2O
NMR sample composition 1.0 mM Calmodulin, 1.0 mM 15N,13C RalA HVR, 90% H2O/10% D2O | 90% H2O/10% D2O
Resolution not provided
8V2G Cryo-EM structure of the KCa2.2 channel in apo state Deposited 2023-11-22 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain E 3–148（146 aa）
Chain F 3–148（146 aa）
Chain G 3–148（146 aa）
Chain H 3–148（146 aa）
Not recorded K POTASSIUM ION × 4 CA CALCIUM ION × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.18 Å
8V2H Cryo-EM structure of the KCa2.2 channel bound to inhibitor AP14145. Deposited 2023-11-22 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain E 3–148（146 aa）
Chain F 3–148（146 aa）
Chain G 3–148（146 aa）
Chain H 3–148（146 aa）
Not recorded K POTASSIUM ION × 4 CA CALCIUM ION × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
8V3G Cryo-EM structure of the KCa2.2 channel with inhibitor UCL 1684. Deposited 2023-11-27 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain E 3–148（146 aa）
Chain F 3–148（146 aa）
Chain G 3–148（146 aa）
Chain H 3–148（146 aa）
Not recorded K POTASSIUM ION × 4 Y7Z UCL1684 × 1 CA CALCIUM ION × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
9ED1 Cryo-EM structure of the human KCa3.1/calmodulin channel in complex with Ca2+ and 1,4-dihydropyridine (DHP-103) Deposited 2024-11-15 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain E 4–148（145 aa）
Chain F 4–148（145 aa）
Chain G 4–148（145 aa）
Chain H 4–148（145 aa）
Not recorded K POTASSIUM ION × 5 CA CALCIUM ION × 12 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å
9EIO Cryo-EM structure of the mutant KCa2.2_F244S channel Deposited 2024-11-26 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain E 4–145（142 aa）
Chain F 4–145（142 aa）
Chain G 4–145（142 aa）
Chain H 4–145（142 aa）
Not recorded K POTASSIUM ION × 4 CA CALCIUM ION × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.62 Å
9KYS the Ca2+/CaM-CASK-ARD complex Deposited 2024-12-09 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–149（149 aa）
Chain C 1–149（149 aa）
Not recorded CA CALCIUM ION × 8 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；289 K；magnesium chloride, PEG 3350
Resolution 1.76 Å R-free 0.231
9M5Y the crystal structure of the Ca2+/CaM-CASK-CaMK complex Deposited 2025-03-06 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–149（149 aa）
Not recorded ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 1 PO4 PHOSPHATE ION × 1 CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5；298 K；0.1 M Sodium citrate tribasic dihydrate, pH 5.0, 10% (v/v) PEG 6000.
Resolution 1.80 Å R-free 0.197
9M6G the crystal structure of the Ca2+/CaM-CASK-CaMK-Mint1-CID complex Deposited 2025-03-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 1–149（149 aa）
Not recorded ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 1 MLI MALONATE ION × 1 CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5；289 K；0.1 M Sodium malonate, pH 5.0, 12% (v/v) PEG 3350
Resolution 1.70 Å R-free 0.187
9O7S Cryo-EM structure of KCa2.2/calmodulin channel in complex with NS309 Deposited 2025-04-15 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain E 4–148（145 aa）
Chain F 4–148（145 aa）
Chain G 4–148（145 aa）
Chain H 4–148（145 aa）
Not recorded K POTASSIUM ION × 3 1KP (3E)-6,7-dichloro-3-(hydroxyimino)-1,3-dihydro-2H-indol-2-one × 4 CA CALCIUM ION × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.71 Å
9O85 Cryo-EM structure of KCa2.2_I/calmodulin channel in complex with rimtuzalcap Deposited 2025-04-15 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain E 5–148（144 aa）
Chain F 5–148（144 aa）
Chain G 5–148（144 aa）
Chain H 5–148（144 aa）
Not recorded K POTASSIUM ION × 3 A1B92 Rimtuzalcap × 4 CA CALCIUM ION × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.13 Å
9O93 Cryo-EM structure of KCa2.2_II/calmodulin channel in complex with rimtuzalcap Deposited 2025-04-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain E 5–148（144 aa）
Chain F 5–148（144 aa）
Chain G 5–148（144 aa）
Chain H 5–148（144 aa）
Not recorded K POTASSIUM ION × 2 A1B92 Rimtuzalcap × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.96 Å
9OA8 Cryo-EM structure of KCa3.1/calmodulin channel in complex with NS309 Deposited 2025-04-19 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain E 3–148（146 aa）
Chain F 3–148（146 aa）
Chain G 3–148（146 aa）
Chain H 3–148（146 aa）
Not recorded K POTASSIUM ION × 3 1KP (3E)-6,7-dichloro-3-(hydroxyimino)-1,3-dihydro-2H-indol-2-one × 4 CA CALCIUM ION × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.59 Å
9U9D Bipartite Genetically Encoded Biosensor sG-GECO1 Deposited 2025-03-27 Assembly 1 Insufficient information Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 3–149（147 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；0.2m sodium malonate dibasic monohydrate, 0.1M Bis-Tris propane pH 8.5, 20% w/v PEG 3350
Resolution 1.80 Å R-free 0.227

This page presents structural evidence recorded in PDB/mmCIF.“No recorded non-water small molecule” does not prove that the experimental sample was ligand-free; experimental conditions belong to the PDB experiment, while ligands and copy counts are shown for each biological assembly.