| Human | PDE4D | 3sl3 | A | B | | | |
| Human | PDE4D | 3sl3 | B | A | | | |
| Human | PDE4D | 3sl3 | B | B | | | |
| Human | PDE4D | 3sl3 | C | A | | | |
| Human | PDE4D | 3sl3 | C | B | | | |
| Human | PDE4D | 3sl3 | D | A | | | |
| Human | PDE4D | 3sl3 | D | B | | | |
| Human | PDE4D | 3sl4 | A | A | ethenyl6-(ethenylcarbamoyl)-2-[(phenylacetyl)amino]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate | | |
| Human | PDE4D | 3sl4 | A | B | ethenyl6-(ethenylcarbamoyl)-2-[(phenylacetyl)amino]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate | | |
| Human | PDE4D | 3sl4 | B | A | ethenyl6-(ethenylcarbamoyl)-2-[(phenylacetyl)amino]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate | | |
| Human | PDE4D | 3sl4 | B | B | ethenyl6-(ethenylcarbamoyl)-2-[(phenylacetyl)amino]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate | | |
| Human | PDE4D | 3sl4 | C | A | ethenyl6-(ethenylcarbamoyl)-2-[(phenylacetyl)amino]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate | | |
| Human | PDE4D | 3sl4 | C | B | ethenyl6-(ethenylcarbamoyl)-2-[(phenylacetyl)amino]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate | | |
| Human | PDE4D | 3sl4 | D | A | ethenyl6-(ethenylcarbamoyl)-2-[(phenylacetyl)amino]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate | | |
| Human | PDE4D | 3sl4 | D | B | ethenyl6-(ethenylcarbamoyl)-2-[(phenylacetyl)amino]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate | | |
| Human | PDE4D | 3sl5 | A | | diethyl2-[(thiophen-2-ylacetyl)amino]-4,7-dihydrothieno[2,3-c]pyridine-3,6(5H)-dicarboxylate | | |
| Human | PDE4D | 3sl5 | B | | diethyl2-[(thiophen-2-ylacetyl)amino]-4,7-dihydrothieno[2,3-c]pyridine-3,6(5H)-dicarboxylate | | |
| Human | PDE4D | 3sl5 | C | | diethyl2-[(thiophen-2-ylacetyl)amino]-4,7-dihydrothieno[2,3-c]pyridine-3,6(5H)-dicarboxylate | | |
| Human | PDE4D | 3sl5 | D | | diethyl2-[(thiophen-2-ylacetyl)amino]-4,7-dihydrothieno[2,3-c]pyridine-3,6(5H)-dicarboxylate | | |
| Human | PDE4D | 3sl6 | A | A | cyclopentyl6-(ethylcarbamoyl)-2-[(thiophen-2-ylacetyl)amino]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate | | |
| Human | PDE4D | 3sl6 | A | B | cyclopentyl6-(ethylcarbamoyl)-2-[(thiophen-2-ylacetyl)amino]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate | | |
| Human | PDE4D | 3sl6 | B | A | cyclopentyl6-(ethylcarbamoyl)-2-[(thiophen-2-ylacetyl)amino]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate | | |
| Human | PDE4D | 3sl6 | B | B | cyclopentyl6-(ethylcarbamoyl)-2-[(thiophen-2-ylacetyl)amino]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate | | |
| Human | PDE4D | 3sl6 | C | A | cyclopentyl6-(ethylcarbamoyl)-2-[(thiophen-2-ylacetyl)amino]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate | | |
| Human | PDE4D | 3sl6 | C | B | cyclopentyl6-(ethylcarbamoyl)-2-[(thiophen-2-ylacetyl)amino]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate | | |
| Human | PDE4D | 3sl6 | D | A | cyclopentyl6-(ethylcarbamoyl)-2-[(thiophen-2-ylacetyl)amino]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate | | |
| Human | PDE4D | 3sl6 | D | B | cyclopentyl6-(ethylcarbamoyl)-2-[(thiophen-2-ylacetyl)amino]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate | | |
| Human | PDE4D | 3sl8 | A | A | 3-cyclopentyl6-ethenyl2-[(thiophen-2-ylacetyl)amino]-4,7-dihydrothieno[2,3-c]pyridine-3,6(5H)-dicarboxylate | | |
| Human | PDE4D | 3sl8 | A | B | 3-cyclopentyl6-ethenyl2-[(thiophen-2-ylacetyl)amino]-4,7-dihydrothieno[2,3-c]pyridine-3,6(5H)-dicarboxylate | | |
| Human | PDE4D | 3sl8 | B | A | 3-cyclopentyl6-ethenyl2-[(thiophen-2-ylacetyl)amino]-4,7-dihydrothieno[2,3-c]pyridine-3,6(5H)-dicarboxylate | | |