| Chain | GOid | namespace | contents |
| 0 | 0005515 | molecular_function | protein binding |
| 0 | 0005856 | cellular_component | cytoskeleton |
| 0 | 0005874 | cellular_component | microtubule |
| 0 | 0005930 | cellular_component | axoneme |
| 0 | 0008017 | molecular_function | microtubule binding |
| 0 | 0031267 | molecular_function | small GTPase binding |
| 0 | 0031514 | cellular_component | motile cilium |
| 0 | 0048870 | biological_process | cell motility |
| 0 | 0060294 | biological_process | cilium movement involved in cell motility |
| 0 | 0070286 | biological_process | axonemal dynein complex assembly |
| 0 | 0097729 | cellular_component | 9+2 motile cilium |
| 1 | 0005515 | molecular_function | protein binding |
| 1 | 0005858 | cellular_component | axonemal dynein complex |
| 1 | 0005930 | cellular_component | axoneme |
| 1 | 0035082 | biological_process | axoneme assembly |
| 1 | 0065003 | biological_process | protein-containing complex assembly |
| 1 | 0070286 | biological_process | axonemal dynein complex assembly |
| 2 | 0005515 | molecular_function | protein binding |
| 2 | 0005858 | cellular_component | axonemal dynein complex |
| 2 | 0005930 | cellular_component | axoneme |
| 2 | 0031514 | cellular_component | motile cilium |
| 2 | 0035082 | biological_process | axoneme assembly |
| 2 | 0065003 | biological_process | protein-containing complex assembly |
| 2 | 0070286 | biological_process | axonemal dynein complex assembly |
| 4 | 0005515 | molecular_function | protein binding |
| 4 | 0005856 | cellular_component | cytoskeleton |
| 4 | 0005874 | cellular_component | microtubule |
| 4 | 0005930 | cellular_component | axoneme |
| 4 | 0008017 | molecular_function | microtubule binding |
| 4 | 0031267 | molecular_function | small GTPase binding |
| 4 | 0031514 | cellular_component | motile cilium |
| 4 | 0048870 | biological_process | cell motility |
| 4 | 0060294 | biological_process | cilium movement involved in cell motility |
| 4 | 0070286 | biological_process | axonemal dynein complex assembly |
| 4 | 0097729 | cellular_component | 9+2 motile cilium |
| 6 | 0000166 | molecular_function | nucleotide binding |
| 6 | 0003924 | molecular_function | GTPase activity |
| 6 | 0005200 | molecular_function | structural constituent of cytoskeleton |
| 6 | 0005525 | molecular_function | GTP binding |
| 6 | 0005856 | cellular_component | cytoskeleton |
| 6 | 0005874 | cellular_component | microtubule |
| 6 | 0007010 | biological_process | cytoskeleton organization |
| 6 | 0007017 | biological_process | microtubule-based process |
| 6 | 0046872 | molecular_function | metal ion binding |
| 7 | 0000166 | molecular_function | nucleotide binding |
| 7 | 0005200 | molecular_function | structural constituent of cytoskeleton |
| 7 | 0005525 | molecular_function | GTP binding |
| 7 | 0005856 | cellular_component | cytoskeleton |
| 7 | 0005874 | cellular_component | microtubule |
| 7 | 0007010 | biological_process | cytoskeleton organization |
| 7 | 0007017 | biological_process | microtubule-based process |
| 7 | 0016787 | molecular_function | hydrolase activity |
| 7 | 0046872 | molecular_function | metal ion binding |
| 8 | 0000166 | molecular_function | nucleotide binding |
| 8 | 0003924 | molecular_function | GTPase activity |
| 8 | 0005200 | molecular_function | structural constituent of cytoskeleton |
| 8 | 0005525 | molecular_function | GTP binding |
| 8 | 0005856 | cellular_component | cytoskeleton |
| 8 | 0005874 | cellular_component | microtubule |
| 8 | 0007010 | biological_process | cytoskeleton organization |
| 8 | 0007017 | biological_process | microtubule-based process |
| 8 | 0046872 | molecular_function | metal ion binding |
| 9 | 0000166 | molecular_function | nucleotide binding |
| 9 | 0005200 | molecular_function | structural constituent of cytoskeleton |
| 9 | 0005525 | molecular_function | GTP binding |
| 9 | 0005856 | cellular_component | cytoskeleton |
| 9 | 0005874 | cellular_component | microtubule |
| 9 | 0007010 | biological_process | cytoskeleton organization |
| 9 | 0007017 | biological_process | microtubule-based process |
| 9 | 0016787 | molecular_function | hydrolase activity |
| 9 | 0046872 | molecular_function | metal ion binding |
| a | 0005874 | cellular_component | microtubule |
| a | 0005875 | cellular_component | microtubule associated complex |
| a | 0005930 | cellular_component | axoneme |
| a | 0007017 | biological_process | microtubule-based process |
| a | 0015630 | cellular_component | microtubule cytoskeleton |
| a | 0030286 | cellular_component | dynein complex |
| a | 0044458 | biological_process | motile cilium assembly |
| a | 0097014 | cellular_component | ciliary plasm |
| A | 0003341 | biological_process | cilium movement |
| A | 0005930 | cellular_component | axoneme |
| A | 0036159 | biological_process | inner dynein arm assembly |
| A | 0060285 | biological_process | cilium-dependent cell motility |
| b | 0005874 | cellular_component | microtubule |
| b | 0005875 | cellular_component | microtubule associated complex |
| b | 0005930 | cellular_component | axoneme |
| b | 0007017 | biological_process | microtubule-based process |
| b | 0015630 | cellular_component | microtubule cytoskeleton |
| b | 0030286 | cellular_component | dynein complex |
| b | 0044458 | biological_process | motile cilium assembly |
| b | 0097014 | cellular_component | ciliary plasm |
| B | 0035082 | biological_process | axoneme assembly |
| c | 0005874 | cellular_component | microtubule |
| c | 0005875 | cellular_component | microtubule associated complex |
| c | 0005930 | cellular_component | axoneme |
| c | 0007017 | biological_process | microtubule-based process |
| c | 0015630 | cellular_component | microtubule cytoskeleton |
| c | 0030286 | cellular_component | dynein complex |
| c | 0044458 | biological_process | motile cilium assembly |
| c | 0097014 | cellular_component | ciliary plasm |
| C | 0000166 | molecular_function | nucleotide binding |
| C | 0003924 | molecular_function | GTPase activity |
| C | 0005200 | molecular_function | structural constituent of cytoskeleton |
| C | 0005525 | molecular_function | GTP binding |
| C | 0005856 | cellular_component | cytoskeleton |
| C | 0005874 | cellular_component | microtubule |
| C | 0007010 | biological_process | cytoskeleton organization |
| C | 0007017 | biological_process | microtubule-based process |
| C | 0046872 | molecular_function | metal ion binding |
| d | 0005874 | cellular_component | microtubule |
| d | 0005875 | cellular_component | microtubule associated complex |
| d | 0005930 | cellular_component | axoneme |
| d | 0007017 | biological_process | microtubule-based process |
| d | 0015630 | cellular_component | microtubule cytoskeleton |
| d | 0030286 | cellular_component | dynein complex |
| d | 0044458 | biological_process | motile cilium assembly |
| d | 0097014 | cellular_component | ciliary plasm |
| D | 0000166 | molecular_function | nucleotide binding |
| D | 0005200 | molecular_function | structural constituent of cytoskeleton |
| D | 0005525 | molecular_function | GTP binding |
| D | 0005856 | cellular_component | cytoskeleton |
| D | 0005874 | cellular_component | microtubule |
| D | 0007010 | biological_process | cytoskeleton organization |
| D | 0007017 | biological_process | microtubule-based process |
| D | 0016787 | molecular_function | hydrolase activity |
| D | 0046872 | molecular_function | metal ion binding |
| e | 0005874 | cellular_component | microtubule |
| e | 0005875 | cellular_component | microtubule associated complex |
| e | 0005930 | cellular_component | axoneme |
| e | 0007017 | biological_process | microtubule-based process |
| e | 0015630 | cellular_component | microtubule cytoskeleton |
| e | 0030286 | cellular_component | dynein complex |
| e | 0044458 | biological_process | motile cilium assembly |
| e | 0097014 | cellular_component | ciliary plasm |
| E | 0005929 | cellular_component | cilium |
| f | 0005874 | cellular_component | microtubule |
| f | 0005875 | cellular_component | microtubule associated complex |
| f | 0005930 | cellular_component | axoneme |
| f | 0007017 | biological_process | microtubule-based process |
| f | 0015630 | cellular_component | microtubule cytoskeleton |
| f | 0030286 | cellular_component | dynein complex |
| f | 0044458 | biological_process | motile cilium assembly |
| f | 0097014 | cellular_component | ciliary plasm |
| F | 0005929 | cellular_component | cilium |
| g | 0005874 | cellular_component | microtubule |
| g | 0005875 | cellular_component | microtubule associated complex |
| g | 0005930 | cellular_component | axoneme |
| g | 0007017 | biological_process | microtubule-based process |
| g | 0015630 | cellular_component | microtubule cytoskeleton |
| g | 0030286 | cellular_component | dynein complex |
| g | 0044458 | biological_process | motile cilium assembly |
| g | 0097014 | cellular_component | ciliary plasm |
| G | 0000166 | molecular_function | nucleotide binding |
| G | 0003924 | molecular_function | GTPase activity |
| G | 0005200 | molecular_function | structural constituent of cytoskeleton |
| G | 0005525 | molecular_function | GTP binding |
| G | 0005856 | cellular_component | cytoskeleton |
| G | 0005874 | cellular_component | microtubule |
| G | 0007010 | biological_process | cytoskeleton organization |
| G | 0007017 | biological_process | microtubule-based process |
| G | 0046872 | molecular_function | metal ion binding |
| h | 0005874 | cellular_component | microtubule |
| h | 0005875 | cellular_component | microtubule associated complex |
| h | 0005930 | cellular_component | axoneme |
| h | 0007017 | biological_process | microtubule-based process |
| h | 0015630 | cellular_component | microtubule cytoskeleton |
| h | 0030286 | cellular_component | dynein complex |
| h | 0044458 | biological_process | motile cilium assembly |
| h | 0097014 | cellular_component | ciliary plasm |
| H | 0000166 | molecular_function | nucleotide binding |
| H | 0005200 | molecular_function | structural constituent of cytoskeleton |
| H | 0005525 | molecular_function | GTP binding |
| H | 0005856 | cellular_component | cytoskeleton |
| H | 0005874 | cellular_component | microtubule |
| H | 0007010 | biological_process | cytoskeleton organization |
| H | 0007017 | biological_process | microtubule-based process |
| H | 0016787 | molecular_function | hydrolase activity |
| H | 0046872 | molecular_function | metal ion binding |
| i | 0000166 | molecular_function | nucleotide binding |
| i | 0003924 | molecular_function | GTPase activity |
| i | 0005200 | molecular_function | structural constituent of cytoskeleton |
| i | 0005525 | molecular_function | GTP binding |
| i | 0005856 | cellular_component | cytoskeleton |
| i | 0005874 | cellular_component | microtubule |
| i | 0007010 | biological_process | cytoskeleton organization |
| i | 0007017 | biological_process | microtubule-based process |
| i | 0046872 | molecular_function | metal ion binding |
| I | 0000166 | molecular_function | nucleotide binding |
| I | 0003924 | molecular_function | GTPase activity |
| I | 0005200 | molecular_function | structural constituent of cytoskeleton |
| I | 0005525 | molecular_function | GTP binding |
| I | 0005856 | cellular_component | cytoskeleton |
| I | 0005874 | cellular_component | microtubule |
| I | 0007010 | biological_process | cytoskeleton organization |
| I | 0007017 | biological_process | microtubule-based process |
| I | 0046872 | molecular_function | metal ion binding |
| j | 0000166 | molecular_function | nucleotide binding |
| j | 0005200 | molecular_function | structural constituent of cytoskeleton |
| j | 0005525 | molecular_function | GTP binding |
| j | 0005856 | cellular_component | cytoskeleton |
| j | 0005874 | cellular_component | microtubule |
| j | 0007010 | biological_process | cytoskeleton organization |
| j | 0007017 | biological_process | microtubule-based process |
| j | 0016787 | molecular_function | hydrolase activity |
| j | 0046872 | molecular_function | metal ion binding |
| J | 0000166 | molecular_function | nucleotide binding |
| J | 0005200 | molecular_function | structural constituent of cytoskeleton |
| J | 0005525 | molecular_function | GTP binding |
| J | 0005856 | cellular_component | cytoskeleton |
| J | 0005874 | cellular_component | microtubule |
| J | 0007010 | biological_process | cytoskeleton organization |
| J | 0007017 | biological_process | microtubule-based process |
| J | 0016787 | molecular_function | hydrolase activity |
| J | 0046872 | molecular_function | metal ion binding |
| k | 0000166 | molecular_function | nucleotide binding |
| k | 0003924 | molecular_function | GTPase activity |
| k | 0005200 | molecular_function | structural constituent of cytoskeleton |
| k | 0005525 | molecular_function | GTP binding |
| k | 0005856 | cellular_component | cytoskeleton |
| k | 0005874 | cellular_component | microtubule |
| k | 0007010 | biological_process | cytoskeleton organization |
| k | 0007017 | biological_process | microtubule-based process |
| k | 0046872 | molecular_function | metal ion binding |
| K | 0000166 | molecular_function | nucleotide binding |
| K | 0003924 | molecular_function | GTPase activity |
| K | 0005200 | molecular_function | structural constituent of cytoskeleton |
| K | 0005525 | molecular_function | GTP binding |
| K | 0005856 | cellular_component | cytoskeleton |
| K | 0005874 | cellular_component | microtubule |
| K | 0007010 | biological_process | cytoskeleton organization |
| K | 0007017 | biological_process | microtubule-based process |
| K | 0046872 | molecular_function | metal ion binding |
| l | 0005096 | molecular_function | GTPase activator activity |
| l | 0005930 | cellular_component | axoneme |
| L | 0000166 | molecular_function | nucleotide binding |
| L | 0005200 | molecular_function | structural constituent of cytoskeleton |
| L | 0005525 | molecular_function | GTP binding |
| L | 0005856 | cellular_component | cytoskeleton |
| L | 0005874 | cellular_component | microtubule |
| L | 0007010 | biological_process | cytoskeleton organization |
| L | 0007017 | biological_process | microtubule-based process |
| L | 0016787 | molecular_function | hydrolase activity |
| L | 0046872 | molecular_function | metal ion binding |
| m | 0001669 | cellular_component | acrosomal vesicle |
| m | 0016020 | cellular_component | membrane |
| m | 0031410 | cellular_component | cytoplasmic vesicle |
| M | 0005509 | molecular_function | calcium ion binding |
| M | 0046872 | molecular_function | metal ion binding |
| N | 0005509 | molecular_function | calcium ion binding |
| N | 0046872 | molecular_function | metal ion binding |
| o | 0005874 | cellular_component | microtubule |
| o | 0005875 | cellular_component | microtubule associated complex |
| o | 0005930 | cellular_component | axoneme |
| o | 0007017 | biological_process | microtubule-based process |
| o | 0015630 | cellular_component | microtubule cytoskeleton |
| o | 0030286 | cellular_component | dynein complex |
| o | 0044458 | biological_process | motile cilium assembly |
| o | 0097014 | cellular_component | ciliary plasm |
| O | 0000166 | molecular_function | nucleotide binding |
| O | 0003924 | molecular_function | GTPase activity |
| O | 0005200 | molecular_function | structural constituent of cytoskeleton |
| O | 0005525 | molecular_function | GTP binding |
| O | 0005856 | cellular_component | cytoskeleton |
| O | 0005874 | cellular_component | microtubule |
| O | 0007010 | biological_process | cytoskeleton organization |
| O | 0007017 | biological_process | microtubule-based process |
| O | 0046872 | molecular_function | metal ion binding |
| p | 0005874 | cellular_component | microtubule |
| p | 0005875 | cellular_component | microtubule associated complex |
| p | 0005930 | cellular_component | axoneme |
| p | 0007017 | biological_process | microtubule-based process |
| p | 0015630 | cellular_component | microtubule cytoskeleton |
| p | 0030286 | cellular_component | dynein complex |
| p | 0044458 | biological_process | motile cilium assembly |
| p | 0097014 | cellular_component | ciliary plasm |
| P | 0000166 | molecular_function | nucleotide binding |
| P | 0005200 | molecular_function | structural constituent of cytoskeleton |
| P | 0005525 | molecular_function | GTP binding |
| P | 0005856 | cellular_component | cytoskeleton |
| P | 0005874 | cellular_component | microtubule |
| P | 0007010 | biological_process | cytoskeleton organization |
| P | 0007017 | biological_process | microtubule-based process |
| P | 0016787 | molecular_function | hydrolase activity |
| P | 0046872 | molecular_function | metal ion binding |
| q | 0005874 | cellular_component | microtubule |
| q | 0005875 | cellular_component | microtubule associated complex |
| q | 0005930 | cellular_component | axoneme |
| q | 0007017 | biological_process | microtubule-based process |
| q | 0015630 | cellular_component | microtubule cytoskeleton |
| q | 0030286 | cellular_component | dynein complex |
| q | 0044458 | biological_process | motile cilium assembly |
| q | 0097014 | cellular_component | ciliary plasm |
| Q | 0000166 | molecular_function | nucleotide binding |
| Q | 0003924 | molecular_function | GTPase activity |
| Q | 0005200 | molecular_function | structural constituent of cytoskeleton |
| Q | 0005525 | molecular_function | GTP binding |
| Q | 0005856 | cellular_component | cytoskeleton |
| Q | 0005874 | cellular_component | microtubule |
| Q | 0007010 | biological_process | cytoskeleton organization |
| Q | 0007017 | biological_process | microtubule-based process |
| Q | 0046872 | molecular_function | metal ion binding |
| r | 0005874 | cellular_component | microtubule |
| r | 0005875 | cellular_component | microtubule associated complex |
| r | 0005930 | cellular_component | axoneme |
| r | 0007017 | biological_process | microtubule-based process |
| r | 0015630 | cellular_component | microtubule cytoskeleton |
| r | 0030286 | cellular_component | dynein complex |
| r | 0044458 | biological_process | motile cilium assembly |
| r | 0097014 | cellular_component | ciliary plasm |
| R | 0000166 | molecular_function | nucleotide binding |
| R | 0005200 | molecular_function | structural constituent of cytoskeleton |
| R | 0005525 | molecular_function | GTP binding |
| R | 0005856 | cellular_component | cytoskeleton |
| R | 0005874 | cellular_component | microtubule |
| R | 0007010 | biological_process | cytoskeleton organization |
| R | 0007017 | biological_process | microtubule-based process |
| R | 0016787 | molecular_function | hydrolase activity |
| R | 0046872 | molecular_function | metal ion binding |
| S | 0000166 | molecular_function | nucleotide binding |
| S | 0003924 | molecular_function | GTPase activity |
| S | 0005200 | molecular_function | structural constituent of cytoskeleton |
| S | 0005525 | molecular_function | GTP binding |
| S | 0005856 | cellular_component | cytoskeleton |
| S | 0005874 | cellular_component | microtubule |
| S | 0007010 | biological_process | cytoskeleton organization |
| S | 0007017 | biological_process | microtubule-based process |
| S | 0046872 | molecular_function | metal ion binding |
| t | 0000166 | molecular_function | nucleotide binding |
| t | 0005200 | molecular_function | structural constituent of cytoskeleton |
| t | 0005525 | molecular_function | GTP binding |
| t | 0005856 | cellular_component | cytoskeleton |
| t | 0005874 | cellular_component | microtubule |
| t | 0007010 | biological_process | cytoskeleton organization |
| t | 0007017 | biological_process | microtubule-based process |
| t | 0016787 | molecular_function | hydrolase activity |
| t | 0046872 | molecular_function | metal ion binding |
| T | 0000166 | molecular_function | nucleotide binding |
| T | 0005200 | molecular_function | structural constituent of cytoskeleton |
| T | 0005525 | molecular_function | GTP binding |
| T | 0005856 | cellular_component | cytoskeleton |
| T | 0005874 | cellular_component | microtubule |
| T | 0007010 | biological_process | cytoskeleton organization |
| T | 0007017 | biological_process | microtubule-based process |
| T | 0016787 | molecular_function | hydrolase activity |
| T | 0046872 | molecular_function | metal ion binding |
| u | 0000166 | molecular_function | nucleotide binding |
| u | 0005524 | molecular_function | ATP binding |
| u | 0005856 | cellular_component | cytoskeleton |
| u | 0016787 | molecular_function | hydrolase activity |
| u | 0036156 | cellular_component | inner dynein arm |
| U | 0005737 | cellular_component | cytoplasm |
| U | 0031514 | cellular_component | motile cilium |
| v | 0005737 | cellular_component | cytoplasm |
| v | 0030030 | biological_process | cell projection organization |
| v | 0030286 | cellular_component | dynein complex |
| v | 0036156 | cellular_component | inner dynein arm |
| v | 0036159 | biological_process | inner dynein arm assembly |
| v | 0045504 | molecular_function | dynein heavy chain binding |
| v | 0060294 | biological_process | cilium movement involved in cell motility |
| V | 0005737 | cellular_component | cytoplasm |
| V | 0031514 | cellular_component | motile cilium |
| w | 0005737 | cellular_component | cytoplasm |
| w | 0030030 | biological_process | cell projection organization |
| w | 0030286 | cellular_component | dynein complex |
| w | 0036156 | cellular_component | inner dynein arm |
| w | 0036159 | biological_process | inner dynein arm assembly |
| w | 0045504 | molecular_function | dynein heavy chain binding |
| w | 0060294 | biological_process | cilium movement involved in cell motility |
| W | 0000166 | molecular_function | nucleotide binding |
| W | 0003924 | molecular_function | GTPase activity |
| W | 0005200 | molecular_function | structural constituent of cytoskeleton |
| W | 0005525 | molecular_function | GTP binding |
| W | 0005856 | cellular_component | cytoskeleton |
| W | 0005874 | cellular_component | microtubule |
| W | 0007010 | biological_process | cytoskeleton organization |
| W | 0007017 | biological_process | microtubule-based process |
| W | 0046872 | molecular_function | metal ion binding |
| x | 0005930 | cellular_component | axoneme |
| X | 0000166 | molecular_function | nucleotide binding |
| X | 0005200 | molecular_function | structural constituent of cytoskeleton |
| X | 0005525 | molecular_function | GTP binding |
| X | 0005856 | cellular_component | cytoskeleton |
| X | 0005874 | cellular_component | microtubule |
| X | 0007010 | biological_process | cytoskeleton organization |
| X | 0007017 | biological_process | microtubule-based process |
| X | 0016787 | molecular_function | hydrolase activity |
| X | 0046872 | molecular_function | metal ion binding |
| y | 0000166 | molecular_function | nucleotide binding |
| y | 0003924 | molecular_function | GTPase activity |
| y | 0005200 | molecular_function | structural constituent of cytoskeleton |
| y | 0005525 | molecular_function | GTP binding |
| y | 0005856 | cellular_component | cytoskeleton |
| y | 0005874 | cellular_component | microtubule |
| y | 0007010 | biological_process | cytoskeleton organization |
| y | 0007017 | biological_process | microtubule-based process |
| y | 0046872 | molecular_function | metal ion binding |
| Y | 0000166 | molecular_function | nucleotide binding |
| Y | 0003924 | molecular_function | GTPase activity |
| Y | 0005200 | molecular_function | structural constituent of cytoskeleton |
| Y | 0005525 | molecular_function | GTP binding |
| Y | 0005856 | cellular_component | cytoskeleton |
| Y | 0005874 | cellular_component | microtubule |
| Y | 0007010 | biological_process | cytoskeleton organization |
| Y | 0007017 | biological_process | microtubule-based process |
| Y | 0046872 | molecular_function | metal ion binding |
| z | 0000166 | molecular_function | nucleotide binding |
| z | 0005200 | molecular_function | structural constituent of cytoskeleton |
| z | 0005525 | molecular_function | GTP binding |
| z | 0005856 | cellular_component | cytoskeleton |
| z | 0005874 | cellular_component | microtubule |
| z | 0007010 | biological_process | cytoskeleton organization |
| z | 0007017 | biological_process | microtubule-based process |
| z | 0016787 | molecular_function | hydrolase activity |
| z | 0046872 | molecular_function | metal ion binding |
| Z | 0000166 | molecular_function | nucleotide binding |
| Z | 0005200 | molecular_function | structural constituent of cytoskeleton |
| Z | 0005525 | molecular_function | GTP binding |
| Z | 0005856 | cellular_component | cytoskeleton |
| Z | 0005874 | cellular_component | microtubule |
| Z | 0007010 | biological_process | cytoskeleton organization |
| Z | 0007017 | biological_process | microtubule-based process |
| Z | 0016787 | molecular_function | hydrolase activity |
| Z | 0046872 | molecular_function | metal ion binding |