Protein profile

VK055_1567

thiol reductant ABC exporter, CydD subunit

Genome: KpATCC43816

Gene: cydD AIK80187.1 Structure source: AlphaFold + ColabFold UniProt A0A0H3GKY7

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Amino acids 588

Annotations 8

Features 46

PDB binders 4

Druggability 0.682

Overview

Basic information about this protein and its source genome.

Accession: VK055_1567
Assembly: Klebsiella pneumoniae subsp. pneumoniae strain ATCC 43816 KPPR1, complete genome
Gene: cydD AIK80187.1
Status: annotated
Amino acids: 588
Structure source: AlphaFold + ColabFold

GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator. GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it. GO:0042883 The directed movement of cysteine into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. GO:0055085 The process in which a solute is transported across a lipid bilayer, from one side of a membrane to the other. GO:0140359 Primary active transporter characterized by two nucleotide-binding domains and two transmembrane domains. Uses the energy generated from ATP hydrolysis to drive the transport of a substance across a membrane. GO:0016887 Catalysis of the reaction: ATP + H2O = ADP + H+ phosphate. ATP hydrolysis is used in some reactions as an energy source, for example to catalyze a reaction or drive transport against a concentration gradient.

Target profile

Computed evidence for target prioritization.

Human off-target: hit
Human identity (%): 42.424
Human E-value: 3.8e-10
Gut microbiome off-target: hit
Essential (DEG): Y
DEG identity (%): 81.293
DEG E-value: 0.0
Localization: CytoplasmicMembrane
ColabFold pLDDT: 91.32

Selected Druggability evidence

AlphaFold / UniProt model

Selected Druggability is the FPocket score chosen for ranking using the curated structure priority. The 3D viewer may show a different loaded structure, so its visible pockets can differ.

FPocket 0.682

Structure A0A0H3GKY7

Pocket Pocket 16

P2Rank 0.612

Structure A0A0H3GKY7

Pocket Pocket 1

ColabFold model

FPocket 0.721 · Pocket 45

P2Rank 0.192 · Pocket 1

Core conservation Conserved core gene

Roary core

CoreCruncher core

Gut microbiome 126 / 4744 genomes with a hit

Normalized 0.027

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

8 GO

Gene Ontology (GO)

GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
GO:0042883 The directed movement of cysteine into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
GO:0055085 The process in which a solute is transported across a lipid bilayer, from one side of a membrane to the other.
GO:0140359 Primary active transporter characterized by two nucleotide-binding domains and two transmembrane domains. Uses the energy generated from ATP hydrolysis to drive the transport of a substance across a membrane.
GO:0016887 Catalysis of the reaction: ATP + H2O = ADP + H+ phosphate. ATP hydrolysis is used in some reactions as an energy source, for example to catalyze a reaction or drive transport against a concentration gradient.
GO:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
GO:0034040 Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: ATP + H2O + lipid(in) = ADP + phosphate + lipid(out).

Sequence Features

Domain/signature hits from InterPro and related databases.

46 records

Show feature table

Start	End	DB	Term	Name
486	500	ProSitePatterns	PS00211	ABC transporters family signature.
486	500	InterPro	IPR017871	ABC transporter-like, conserved site
25	292	Pfam	PF00664	ABC transporter transmembrane region
25	292	InterPro	IPR011527	ABC transporter type 1, transmembrane domain
29	316	ProSiteProfiles	PS50929	ABC transporter integral membrane type-1 fused domain profile.
29	316	InterPro	IPR011527	ABC transporter type 1, transmembrane domain
245	267	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
273	277	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
342	588	FunFam	G3DSA:3.40.50.300:FF:000980	Cysteine/glutathione ABC transporter permease/ATP-binding protein CydD
21	556	NCBIfam	TIGR02857	thiol reductant ABC exporter subunit CydD
21	556	InterPro	IPR014216	ABC transporter, CydDC cysteine exporter (CydDC-E) family, permease/ATP-binding protein CydD
345	588	Gene3D	G3DSA:3.40.50.300	-
345	588	InterPro	IPR027417	P-loop containing nucleoside triphosphate hydrolase
51	580	PANTHER	PTHR24221	ATP-BINDING CASSETTE SUB-FAMILY B
51	580	InterPro	IPR039421	Type 1 protein exporter
167	188	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
351	582	SUPERFAMILY	SSF52540	P-loop containing nucleoside triphosphate hydrolases
351	582	InterPro	IPR027417	P-loop containing nucleoside triphosphate hydrolase
140	161	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
350	583	ProSiteProfiles	PS50893	ATP-binding cassette, ABC transporter-type domain profile.
350	583	InterPro	IPR003439	ABC transporter-like, ATP-binding domain
29	324	CDD	cd18584	ABC_6TM_AarD_CydD
162	166	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
375	560	SMART	SM00382	AAA_5
375	560	InterPro	IPR003593	AAA+ ATPase domain
282	304	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
189	244	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
23	45	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
80	139	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
2	332	FunFam	G3DSA:1.20.1560.10:FF:000039	Cysteine/glutathione ABC transporter permease/ATP-binding protein CydD
245	272	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
11	331	SUPERFAMILY	SSF90123	ABC transporter transmembrane region
11	331	InterPro	IPR036640	ABC transporter type 1, transmembrane domain superfamily
60	82	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
137	159	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
369	513	Pfam	PF00005	ABC transporter
369	513	InterPro	IPR003439	ABC transporter-like, ATP-binding domain
21	45	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
3	331	Gene3D	G3DSA:1.20.1560.10	ABC transporter type 1, transmembrane domain
3	331	InterPro	IPR036640	ABC transporter type 1, transmembrane domain superfamily
57	79	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
298	588	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
278	297	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
1	20	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
46	56	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
163	185	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.

3D Structure

Selected loaded structure. Experimental PDB entries may cover only a portion of the sequence; predicted models typically cover the full protein.

Loading 3D structure...

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Structural evidence

0 + 2

Experimental PDB entries and predicted models. Click Switch to display a different structure in the viewer.

Entry	Method	Resolution	Chain	Coverage	Links	Status
AlphaFold AF_A0A0H3GKY7	AlphaFold	—	—	full sequence	—	Viewing
ColabFold VK055_1567	ColabFold	—	—	full sequence	—	Loaded

Pocket details FPocket · P2Rank — toggle visibility and zoom from here, or open full viewer

Pockets (FPOCKET)

Showing top-ranked FPocket candidates by druggability. Druggability is color-coded: high (0.7 or higher), medium (0.4 to 0.69), low (below 0.4).

FPOCKET	Sticks	Spheres	Surfaces	Druggability	Labels	Zoom	Positions
16				0.682
31				0.008
5				0.003
36				0.001

Pockets (P2RANK)

Showing top-ranked P2Rank candidates by probability. Probability is color-coded per P2Rank calibration: high (≥ 0.5), medium (0.2 – 0.49), low (< 0.2).

P2RANK	Score	Probability
1	13.7	0.612
2	5.89	0.238
3	5.51	0.218
4	4.22	0.142
5	2.83	0.071

Pockets (FPOCKET)

Showing top-ranked FPocket candidates by druggability. Druggability is color-coded: high (0.7 or higher), medium (0.4 to 0.69), low (below 0.4).

FPOCKET	Sticks	Spheres	Surfaces	Druggability	Labels	Zoom	Positions
45				0.721
2				0.069
40				0.008
46				0.006

Pockets (P2RANK)

Showing top-ranked P2Rank candidates by probability. Probability is color-coded per P2Rank calibration: high (≥ 0.5), medium (0.2 – 0.49), low (< 0.2).

P2RANK	Score	Probability
1	5.09	0.192
2	4.92	0.182
3	4.62	0.165
4	4.22	0.142
5	3.24	0.089

Ligand evidence

Ligands grouped by evidence source. PDB ligands keep the source crystal visible, and loaded crystals can be opened directly in the structure viewer.

54 records

Highest-confidence structural evidence: ligands co-crystallized with this exact protein. If the source PDB is loaded in TPW, use Open crystal to inspect it in the structure viewer.

No PDB structure with a co-crystallized ligand found for this exact protein.

Structural evidence inferred from similar proteins. The source crystal indicates where the ligand was observed; the UniProt column identifies the homologous protein carrying that ligand.

Ligand	Source crystal	UniProt (homolog)	MW · LogP · TPSA	Lipinski	PAINS	SMILES
0SA	4F4C	P34712	512.7 Da LogP -0.13 TPSA 169.3	3 viol.	✓ Clean	`CCCCCCCCCCCS[C@H]1[C@@H]([C@H]([C@@H]([C@H](O1)…`
AGS	6QUZ	Q9WYC4	523.2 Da LogP -1.51 TPSA 262.1	3 viol.	✓ Clean	`c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…`
ANP	3B60	P63359	506.2 Da LogP -2.06 TPSA 281.9	3 viol.	✓ Clean	`c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…`
O34	6P6J	Q1RAG2	481.7 Da LogP 2.66 TPSA 114.5	✓ Ro5	✓ Clean	`C[C@@]1(CSC(=N1)C(C)(C)[C@@H]([C@@H]2CS[C@@H](N…`

Experimental bioactivity from ChEMBL measured directly on this protein. Score = pchembl (−log Ki/IC₅₀; higher = more potent).

No ChEMBL bioactivity data found for this exact protein.

Bioactivity inferred from similar proteins in ChEMBL. Score = pchembl (−log Ki/IC₅₀; higher = more potent).

No ChEMBL hits found through similar proteins.

Proposed virtual-screening candidates from ZINC. Score = Tanimoto similarity to a known binder (0–1; higher = more similar).

Ligand	Tanimoto	MW · LogP · TPSA	Lipinski	PAINS	SMILES
ZINC100053481	1.000	484.6 Da LogP -0.91 TPSA 169.3	2 viol.	✓ Clean	`CCCCCCCCCS[C@@H]1O[C@H](CO)[C@@H](O[C@@H]2O[C@H…`
ZINC100057932	1.000	498.6 Da LogP -0.52 TPSA 169.3	2 viol.	✓ Clean	`CCCCCCCCCCS[C@@H]1O[C@H](CO)[C@@H](O[C@@H]2O[C@…`
ZINC100058001	1.000	470.6 Da LogP -1.30 TPSA 169.3	2 viol.	✓ Clean	`CCCCCCCCS[C@@H]1O[C@H](CO)[C@@H](O[C@H]2O[C@H](…`
ZINC100796989	1.000	484.6 Da LogP -0.91 TPSA 169.3	2 viol.	✓ Clean	`CCCCCCCCCS[C@@H]1O[C@H](CO)[C@@H](O[C@H]2O[C@H]…`
ZINC14114498	1.000	498.6 Da LogP -0.52 TPSA 169.3	2 viol.	✓ Clean	`CCCCCCCCCCS[C@@H]1O[C@H](CO)[C@@H](O[C@H]2O[C@H…`
ZINC12360002	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)OP(=O…`
ZINC12360703	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)OP(=O…`
ZINC12503599	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)OP(=O…`
ZINC16546165	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@H](CO[P@](=O)(O)OP(=O)(…`
ZINC31977053	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](CO[P@](=O)(O)OP(=O)…`
ZINC4806433	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)OP(=O…`
ZINC53683898	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](CO[P@@](=O)(O)OP(=…`
ZINC8586019	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](CO[P@](=O)(O)OP(=O)…`
ZINC8586020	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](CO[P@@](=O)(O)OP(=…`
ZINC8586021	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](CO[P@@](=O)(O)OP(=O…`
ZINC8586022	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](CO[P@@](=O)(O)OP(=…`
ZINC13518964	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)O)[C@H](…`
ZINC1532515	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)[C@H](O…`
ZINC1571045	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)O)[C@@H]…`
ZINC1842158	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)[C@H](O…`
ZINC2046931	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)O)[C@H](…`
ZINC2126310	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@@H](…`
ZINC3201891	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)O)[C@@H]…`
ZINC3201893	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)[C@@H](…`
ZINC3830180	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)[C@@H](…`
ZINC3860156	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@@H](…`
ZINC3977897	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@H](COP(=O)(O)O)[C@@H](O…`
ZINC4806442	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@H](O…`
ZINC8613167	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@H](O…`
ZINC4096224	0.768	346.2 Da LogP -1.90 TPSA 191.9	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@](N)(=O)O)[C@@…`
ZINC12503850	0.763	427.3 Da LogP -2.04 TPSA 229.4	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@](=O)(O)OS(=O)…`
ZINC141161066	0.763	427.3 Da LogP -2.04 TPSA 229.4	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@](=O)(O)OS(=O)…`
ZINC141163786	0.763	427.3 Da LogP -2.04 TPSA 229.4	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@](=O)(O)OS(=O)…`
ZINC4228246	0.763	427.3 Da LogP -2.04 TPSA 229.4	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)OS(=O…`
ZINC105372833	0.750	345.3 Da LogP -1.93 TPSA 197.6	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(N)(N)=O)[C@H](O…`
ZINC105372837	0.750	345.3 Da LogP -1.93 TPSA 197.6	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(N)(N)=O)[C@H](O…`
ZINC17107643	0.750	345.3 Da LogP -1.93 TPSA 197.6	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(N)(N)=O)[C@@H](…`
ZINC204538551	0.750	345.3 Da LogP -1.93 TPSA 197.6	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(N)(N)=O)[C@@H](…`
ZINC31475423	0.738	434.3 Da LogP -2.99 TPSA 238.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@H](CO[P@@](=O)(O)OC(=O)…`
ZINC100056957	0.732	336.5 Da LogP 1.66 TPSA 90.2	✓ Ro5	✓ Clean	`CCCCCCCCCCS[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C…`
ZINC100759478	0.732	308.4 Da LogP 0.88 TPSA 90.2	✓ Ro5	✓ Clean	`CCCCCCCCS[C@@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@@H…`
ZINC101659921	0.732	308.4 Da LogP 0.88 TPSA 90.2	✓ Ro5	✓ Clean	`CCCCCCCCS[C@@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]…`
ZINC16052385	0.732	294.4 Da LogP 0.49 TPSA 90.2	✓ Ro5	✓ Clean	`CCCCCCCS[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]…`
ZINC6845558	0.732	308.4 Da LogP 0.88 TPSA 90.2	✓ Ro5	✓ Clean	`CCCCCCCCS[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H…`
ZINC76945567	0.732	308.4 Da LogP 0.88 TPSA 90.2	✓ Ro5	✓ Clean	`CCCCCCCCS[C@@H]1O[C@H](CO)[C@H](O)[C@@H](O)[C@@…`
ZINC77293255	0.732	294.4 Da LogP 0.49 TPSA 90.2	✓ Ro5	✓ Clean	`CCCCCCCS[C@@H]1O[C@@H](CO)[C@@H](O)[C@H](O)[C@H…`
ZINC77293258	0.732	294.4 Da LogP 0.49 TPSA 90.2	✓ Ro5	✓ Clean	`CCCCCCCS[C@@H]1O[C@@H](CO)[C@@H](O)[C@H](O)[C@@…`
ZINC77293261	0.732	294.4 Da LogP 0.49 TPSA 90.2	✓ Ro5	✓ Clean	`CCCCCCCS[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@@H…`
ZINC85479681	0.732	308.4 Da LogP 0.88 TPSA 90.2	✓ Ro5	✓ Clean	`CCCCCCCCS[C@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]…`
ZINC97943321	0.732	308.4 Da LogP 0.88 TPSA 90.2	✓ Ro5	✓ Clean	`CCCCCCCCS[C@@H]1O[C@H](CO)[C@H](O)[C@@H](O)[C@H…`

PDB and ChEMBL records on this protein are shown in full. ChEMBL records from similar proteins are capped at the top 100 per protein (by pchembl) and ZINC at the top 50 (Tanimoto ≥ 0.5). ADME columns are descriptor-based screening flags, not experimental toxicity results.