1 00:00:03,649 --> 00:00:02,330 you can't really do it in vivo it's not 2 00:00:06,050 --> 00:00:03,659 that not that easy I mean you certainly 3 00:00:07,610 --> 00:00:06,060 can't do it in a human eye and the 4 00:00:09,290 --> 00:00:07,620 rhodopsin has to be considered in many 5 00:00:11,320 --> 00:00:09,300 different lights and so we take a look 6 00:00:13,610 --> 00:00:11,330 at it by putting it on to an inorganic 7 00:00:15,470 --> 00:00:13,620 semiconductor let's just use gallium 8 00:00:17,420 --> 00:00:15,480 arsenide doesn't really matter but it's 9 00:00:20,300 --> 00:00:17,430 attached to a man-made inorganic 10 00:00:21,980 --> 00:00:20,310 semiconductor put the bacteria rhodopsin 11 00:00:23,950 --> 00:00:21,990 up there and take a look at it you shine 12 00:00:25,640 --> 00:00:23,960 light on it what happens a 13 00:00:28,910 --> 00:00:25,650 conformational change in the protein 14 00:00:30,919 --> 00:00:28,920 occurs so far so good and then it's 15 00:00:32,510 --> 00:00:30,929 detected by the inorganic semiconductor 16 00:00:34,100 --> 00:00:32,520 and then amplified for eventual 17 00:00:35,810 --> 00:00:34,110 detection by man sending somewhere in 18 00:00:37,490 --> 00:00:35,820 the laboratory right now well that's 19 00:00:39,770 --> 00:00:37,500 nice and this helps to give us an idea 20 00:00:43,280 --> 00:00:39,780 of how bacterial rhodopsin works and 21 00:00:46,340 --> 00:00:43,290 helps to get us some answers so this has 22 00:00:49,970 --> 00:00:46,350 been suggested thus far rhodopsin is 23 00:00:51,410 --> 00:00:49,980 very well known to be packed into RI why 24 00:00:53,869 --> 00:00:51,420 is that because if you've got a whole 25 00:00:55,639 --> 00:00:53,879 bunch of rays emanating from the back of 26 00:00:57,560 --> 00:00:55,649 the room and they are all parallel and 27 00:00:58,849 --> 00:00:57,570 they're going to hit the wall behind me 28 00:01:01,849 --> 00:00:58,859 how many of them are am I going to 29 00:01:02,990 --> 00:01:01,859 intercept very few no matter how fast I 30 00:01:04,789 --> 00:01:03,000 run back and forth we're not going to 31 00:01:06,710 --> 00:01:04,799 intercept that many the ones that I I 32 00:01:08,270 --> 00:01:06,720 detect great but most of them going to 33 00:01:10,580 --> 00:01:08,280 go to my right to my left to the top 34 00:01:11,899 --> 00:01:10,590 they're going to miss me and therefore I 35 00:01:13,850 --> 00:01:11,909 need to do something I need to clone 36 00:01:15,859 --> 00:01:13,860 myself now no matter how unattractive 37 00:01:17,960 --> 00:01:15,869 this may sound to some of you if i 38 00:01:20,450 --> 00:01:17,970 cloned myself and spread myself out i 39 00:01:21,830 --> 00:01:20,460 will be able to detect more why because 40 00:01:24,109 --> 00:01:21,840 these rays are going to be parallel and 41 00:01:25,789 --> 00:01:24,119 I've now increased my detection level it 42 00:01:27,740 --> 00:01:25,799 has been suggested by German researchers 43 00:01:30,830 --> 00:01:27,750 this is the way it has to be the insect 44 00:01:33,410 --> 00:01:30,840 is so ridiculously sensitive they must 45 00:01:36,520 --> 00:01:33,420 be packed in there the odorant receptors 46 00:01:39,590 --> 00:01:36,530 must be packed so they take a look 47 00:01:42,740 --> 00:01:39,600 immunolabeling they're not there find a 48 00:01:44,749 --> 00:01:42,750 few there's nowhere near what we are 49 00:01:45,950 --> 00:01:44,759 needed and so this is a problem as a 50 00:01:47,810 --> 00:01:45,960 matter of fact we found more other 51 00:01:50,210 --> 00:01:47,820 proteins than we found of the putative 52 00:01:51,649 --> 00:01:50,220 odorant receptors sensory neuron 53 00:01:54,050 --> 00:01:51,659 membrane proteins are found in a higher 54 00:01:57,289 --> 00:01:54,060 concentration than the putative odorant 55 00:01:58,730 --> 00:01:57,299 receptors this is a problem what is 56 00:02:01,300 --> 00:01:58,740 going on here based on the current 57 00:02:03,469 --> 00:02:01,310 paradigm I've got my son Silla a 58 00:02:06,109 --> 00:02:03,479 pheromone comes in it's going to impact 59 00:02:07,760 --> 00:02:06,119 at a specific point that specific point 60 00:02:08,990 --> 00:02:07,770 is going to be right there it's not 61 00:02:10,550 --> 00:02:09,000 going to be on the other side it's only 62 00:02:12,260 --> 00:02:10,560 going to be at that specific point that 63 00:02:13,790 --> 00:02:12,270 pheromone will go through a poor at that 64 00:02:14,900 --> 00:02:13,800 specific point 65 00:02:16,370 --> 00:02:14,910 that pheromone will then hit the 66 00:02:18,800 --> 00:02:16,380 dendrite very close to that particular 67 00:02:21,860 --> 00:02:18,810 point it's a point effect is this the 68 00:02:23,630 --> 00:02:21,870 way an antenna works no and antenna 69 00:02:25,460 --> 00:02:23,640 works if you've got an electromagnetic 70 00:02:27,890 --> 00:02:25,470 frequency and the antenna is detecting 71 00:02:29,990 --> 00:02:27,900 it is not a point affect the whole 72 00:02:32,630 --> 00:02:30,000 antenna will light up in a more or less 73 00:02:34,400 --> 00:02:32,640 fashion like this so if it's based upon 74 00:02:35,510 --> 00:02:34,410 antenna theory which I'm espousing right 75 00:02:38,510 --> 00:02:35,520 now you're going to have a different way 76 00:02:40,100 --> 00:02:38,520 of detecting it a conductor is a 77 00:02:42,440 --> 00:02:40,110 substance or body capable of 78 00:02:47,510 --> 00:02:42,450 transmitting electricity heat or sound 79 00:02:49,940 --> 00:02:47,520 the antonym would be an insulator but a 80 00:02:52,240 --> 00:02:49,950 semi conductor any of a class of solids 81 00:02:54,830 --> 00:02:52,250 whose electrical conductivity is between 82 00:02:56,120 --> 00:02:54,840 that of a conductor in an insulator and 83 00:02:58,210 --> 00:02:56,130 this is what we're dealing with right 84 00:03:00,350 --> 00:02:58,220 now at least that's what I'm proposing a 85 00:03:02,680 --> 00:03:00,360 protein semiconductor is a semi 86 00:03:06,050 --> 00:03:02,690 conductor god bless you with a protein 87 00:03:07,340 --> 00:03:06,060 constituent a protein constituent so 88 00:03:09,800 --> 00:03:07,350 proteins are able to detect 89 00:03:12,260 --> 00:03:09,810 electromagnetic frequencies well known 90 00:03:13,550 --> 00:03:12,270 great field going on out there so I told 91 00:03:16,250 --> 00:03:13,560 you what response time of one 92 00:03:19,220 --> 00:03:16,260 millisecond one millisecond equals 1 93 00:03:20,810 --> 00:03:19,230 million picoseconds the researchers have 94 00:03:22,580 --> 00:03:20,820 taken a look at this upon the absorption 95 00:03:25,160 --> 00:03:22,590 of light there is a shift of electron 96 00:03:28,660 --> 00:03:25,170 density in rhodopsin which begins the 97 00:03:31,880 --> 00:03:28,670 photoisomerization process and about 1.6 98 00:03:33,949 --> 00:03:31,890 picoseconds as measured by a 500m to a 99 00:03:35,870 --> 00:03:33,959 second laser well that's great that's 100 00:03:37,490 --> 00:03:35,880 plenty of time may now I've got a 101 00:03:38,870 --> 00:03:37,500 mechanism that works within the time 102 00:03:41,120 --> 00:03:38,880 period that I need which is one 103 00:03:42,979 --> 00:03:41,130 millisecond Alonsa take to recover it's 104 00:03:45,199 --> 00:03:42,989 about 300 milliseconds what about 105 00:03:47,420 --> 00:03:45,209 bacteria rhodopsin resets itself in 106 00:03:48,979 --> 00:03:47,430 about 10 milliseconds well this is great 107 00:03:50,390 --> 00:03:48,989 this again gives me plenty of time 108 00:03:52,190 --> 00:03:50,400 because ninety eight percent of it is 109 00:03:54,740 --> 00:03:52,200 going to be reset in just 20 110 00:03:57,560 --> 00:03:54,750 milliseconds so it's fast detection it's 111 00:03:59,390 --> 00:03:57,570 fast recovery this is looking good it 112 00:04:01,280 --> 00:03:59,400 has been shown now for some of you may 113 00:04:02,540 --> 00:04:01,290 not think well this is this is nice Tom 114 00:04:04,490 --> 00:04:02,550 but this is I need some more evidence 115 00:04:06,680 --> 00:04:04,500 can you give me something more I'll be 116 00:04:10,070 --> 00:04:06,690 happy to it has been shown that upon 117 00:04:13,910 --> 00:04:10,080 strong illumination rhabdo meter real 118 00:04:15,410 --> 00:04:13,920 skeleton shows structural changes so 119 00:04:18,020 --> 00:04:15,420 they take the light and they hit the RAB 120 00:04:19,699 --> 00:04:18,030 de marde this causes structural changes 121 00:04:21,349 --> 00:04:19,709 in the cytoskeleton it's a very 122 00:04:23,750 --> 00:04:21,359 interesting response it's not really 123 00:04:26,480 --> 00:04:23,760 seen that much but it's an interesting 124 00:04:27,770 --> 00:04:26,490 characteristic Kumar and killed two 125 00:04:29,450 --> 00:04:27,780 german researchers of 126 00:04:31,820 --> 00:04:29,460 on that pheromone stimulation not just 127 00:04:34,820 --> 00:04:31,830 any stimulation but high pheromone 128 00:04:37,400 --> 00:04:34,830 stimulation induces cytoskeletal changes 129 00:04:39,500 --> 00:04:37,410 in olfactory dendrites of the male 130 00:04:41,240 --> 00:04:39,510 Saturn I at Moss beautiful I've got 131 00:04:43,159 --> 00:04:41,250 another connection let me give you 132 00:04:45,409 --> 00:04:43,169 another connection g-protein coupled 133 00:04:47,510 --> 00:04:45,419 receptors proteins belong to many 134 00:04:48,950 --> 00:04:47,520 different families one of the more 135 00:04:51,170 --> 00:04:48,960 common ones are the g-protein coupled 136 00:04:53,240 --> 00:04:51,180 receptors they are known as seven 137 00:04:55,340 --> 00:04:53,250 transmembrane alpha helix structures 138 00:04:58,159 --> 00:04:55,350 they pass through the membrane seven 139 00:05:00,350 --> 00:04:58,169 times the g-protein coupled receptors I 140 00:05:02,240 --> 00:05:00,360 talked about in human olfaction is the 141 00:05:04,520 --> 00:05:02,250 same thing as what you find in the 142 00:05:06,680 --> 00:05:04,530 insects the odorant receptors are the 143 00:05:08,630 --> 00:05:06,690 same and so when I'm proposing on this 144 00:05:10,159 --> 00:05:08,640 last slide right now is when the 145 00:05:12,500 --> 00:05:10,169 pheromone molecules get close to the 146 00:05:14,659 --> 00:05:12,510 sencilla they light up as detected by 147 00:05:17,420 --> 00:05:14,669 protein semiconductors and this is how 148 00:05:18,830 --> 00:05:17,430 my theory is now being put forward thank 149 00:05:27,200 --> 00:05:18,840 you very much for your time appreciate 150 00:05:28,820 --> 00:05:27,210 it okay we have a few minutes for 151 00:05:37,040 --> 00:05:28,830 questions and I already see one arm 152 00:05:39,620 --> 00:05:37,050 raised Francesca McCartney hi Francesca 153 00:05:42,140 --> 00:05:39,630 I would you comment or do you have a 154 00:05:44,029 --> 00:05:42,150 comment on Luca turns off faction 155 00:05:45,830 --> 00:05:44,039 research I'd be happy to comment on that 156 00:05:47,990 --> 00:05:45,840 Luca torrents olfaction research is 157 00:05:49,940 --> 00:05:48,000 based upon the vibrational energy the 158 00:05:51,950 --> 00:05:49,950 same as the insects the problem is that 159 00:05:53,750 --> 00:05:51,960 Luca turns Theory looks at electron 160 00:05:55,219 --> 00:05:53,760 tunneling which is a fundamentally 161 00:05:57,320 --> 00:05:55,229 different theory than the dielectric 162 00:06:00,529 --> 00:05:57,330 antenna theory and so if you take a look 163 00:06:02,480 --> 00:06:00,539 at how these two mechanisms lineup they 164 00:06:03,860 --> 00:06:02,490 don't they're still looking at the 165 00:06:05,420 --> 00:06:03,870 vibrational energy but it's two 166 00:06:07,730 --> 00:06:05,430 different ways of looking at the 167 00:06:08,930 --> 00:06:07,740 vibrational energies on the two even 168 00:06:10,610 --> 00:06:08,940 though I support what he's doing and 169 00:06:11,960 --> 00:06:10,620 I've communicated with them we don't 170 00:06:15,140 --> 00:06:11,970 have much to talk about because we're 171 00:06:18,650 --> 00:06:15,150 looking at two different things next 172 00:06:22,700 --> 00:06:18,660 question / yes Glen Rhine I assume that 173 00:06:26,120 --> 00:06:22,710 bugs can smell in the dark yes so your 174 00:06:28,940 --> 00:06:26,130 theory requires light activation of the 175 00:06:31,070 --> 00:06:28,950 semi conductor mechanism no I never said 176 00:06:33,950 --> 00:06:31,080 that because you told us a lot about how 177 00:06:35,660 --> 00:06:33,960 light activates the semiconductors so 178 00:06:37,730 --> 00:06:35,670 that's one half of the question 179 00:06:39,970 --> 00:06:37,740 the other half of the question is why do 180 00:06:42,560 --> 00:06:39,980 you need an intimate intermediary 181 00:06:44,870 --> 00:06:42,570 protein molecule to act as the 182 00:06:47,540 --> 00:06:44,880 transducer when electromagnetic fields 183 00:06:49,580 --> 00:06:47,550 can directly affect receptors at least 184 00:06:51,020 --> 00:06:49,590 in mammalian systems and an 185 00:06:54,200 --> 00:06:51,030 electromagnetic field can propagate 186 00:06:55,910 --> 00:06:54,210 right through the whole center part of 187 00:06:58,790 --> 00:06:55,920 whatever you called it and activate the 188 00:07:00,080 --> 00:06:58,800 cytoplasmic receptor yes it is still 189 00:07:01,670 --> 00:07:00,090 possible that that is happening the 190 00:07:03,560 --> 00:07:01,680 reason why I consider that unlikely is 191 00:07:05,930 --> 00:07:03,570 because the neuronal response is so 192 00:07:07,970 --> 00:07:05,940 clean and so basic that it I do believe 193 00:07:10,490 --> 00:07:07,980 that a protein is allowing ions to enter 194 00:07:12,290 --> 00:07:10,500 a neuronal response is all about I on 195 00:07:14,930 --> 00:07:12,300 interchange calcium influx was talked 196 00:07:16,220 --> 00:07:14,940 about in Lucas's talk earlier on is 197 00:07:17,420 --> 00:07:16,230 really nothing different here and 198 00:07:20,690 --> 00:07:17,430 therefore you're going to need a protein 199 00:07:22,760 --> 00:07:20,700 in order to have ions come in and set 200 00:07:24,350 --> 00:07:22,770 the normal neuronal response so 201 00:07:28,120 --> 00:07:24,360 therefore I do believe that proteins are 202 00:07:31,700 --> 00:07:28,130 involved however it's not necessary um 203 00:07:34,880 --> 00:07:31,710 is short antenna theory small antenna 204 00:07:38,360 --> 00:07:34,890 much smaller than wavelength resonant 205 00:07:41,120 --> 00:07:38,370 antennas part of this no actually these 206 00:07:43,880 --> 00:07:41,130 antennae or sencilla are set up at about 207 00:07:45,230 --> 00:07:43,890 the right wavelength for the infrared 208 00:07:47,060 --> 00:07:45,240 frequencies which are coming from the 209 00:07:48,470 --> 00:07:47,070 vibrational molecules now as you know 210 00:07:49,610 --> 00:07:48,480 they don't have to line up or as you 211 00:07:51,380 --> 00:07:49,620 mate I'm not sure what your background 212 00:07:52,310 --> 00:07:51,390 is but they don't have to line up 213 00:07:53,990 --> 00:07:52,320 perfectly doesn't have to be a 214 00:07:57,290 --> 00:07:54,000 one-to-one but it has to be pretty close 215 00:07:59,420 --> 00:07:57,300 and they are close good question good 216 00:08:03,080 --> 00:07:59,430 antenna question can you relate this to 217 00:08:06,800 --> 00:08:03,090 the the way the dendrites on neural 218 00:08:08,120 --> 00:08:06,810 neurons in the brain work related to 219 00:08:11,600 --> 00:08:08,130 wood that way neurons in the brain 220 00:08:15,050 --> 00:08:11,610 actually yeah actually this is a 221 00:08:16,910 --> 00:08:15,060 question which is outside the my talk it 222 00:08:19,250 --> 00:08:16,920 would not be easy to do so because the 223 00:08:21,710 --> 00:08:19,260 vertebrate neuron is much much much 224 00:08:25,490 --> 00:08:21,720 simpler than the insect neuron and I'm 225 00:08:27,350 --> 00:08:25,500 so happy to say that insect neurons are 226 00:08:28,820 --> 00:08:27,360 far more complicated vertebrate neurons 227 00:08:30,290 --> 00:08:28,830 are very simple that just you know 228 00:08:32,120 --> 00:08:30,300 you'll have you know billions of them 229 00:08:33,350 --> 00:08:32,130 whereas the insect neurons because 230 00:08:35,870 --> 00:08:33,360 there's only a few hundred thousand of 231 00:08:37,490 --> 00:08:35,880 them are much more diverse and have very 232 00:08:39,500 --> 00:08:37,500 different capabilities so to make a 233 00:08:42,230 --> 00:08:39,510 comparison I just can't I just can't and 234 00:08:44,540 --> 00:08:42,240 I'm sorry Tom and your last slide here 235 00:08:46,760 --> 00:08:44,550 it seems to me you're showing pheromone 236 00:08:48,860 --> 00:08:46,770 molecules directly simulating the 237 00:08:51,650 --> 00:08:48,870 antenna but surely you mean 238 00:08:54,740 --> 00:08:51,660 electromagnetic emission or property of 239 00:08:56,570 --> 00:08:54,750 the ligand stimulating the antenna can 240 00:08:58,310 --> 00:08:56,580 you explain what you mean exactly well 241 00:09:02,570 --> 00:08:58,320 not a ligand in the sense that there is 242 00:09:03,860 --> 00:09:02,580 binding ligon would suggest binding yeah 243 00:09:05,240 --> 00:09:03,870 yeah what these are these are fair and 244 00:09:07,430 --> 00:09:05,250 more molecules that are impacting the 245 00:09:08,690 --> 00:09:07,440 outside of the sencilla what I am saying 246 00:09:11,570 --> 00:09:08,700 is that the pheromone is not actually 247 00:09:13,910 --> 00:09:11,580 getting inside the sencilla which is a 248 00:09:16,010 --> 00:09:13,920 necessary prerequisite in order for the 249 00:09:17,810 --> 00:09:16,020 dendrite to detect it according to the 250 00:09:19,850 --> 00:09:17,820 current theory of insect olfaction 251 00:09:21,950 --> 00:09:19,860 because they need the lock and key that 252 00:09:23,420 --> 00:09:21,960 pheromone needs to get in there with my 253 00:09:25,360 --> 00:09:23,430 system it just it needs to get on the 254 00:09:28,070 --> 00:09:25,370 outside of it or in very close proximity 255 00:09:30,320 --> 00:09:28,080 set off the antenna and boom the antenna 256 00:09:33,829 --> 00:09:30,330 lights up in this beautiful display that 257 00:09:36,530 --> 00:09:33,839 I've set before you right now Jim 258 00:09:38,390 --> 00:09:36,540 beekler couldn't you test this by 259 00:09:39,950 --> 00:09:38,400 getting rid of pheromones and finding 260 00:09:41,690 --> 00:09:39,960 the resonant frequency and just seeing 261 00:09:44,329 --> 00:09:41,700 the antenna with that resonant frequency 262 00:09:46,220 --> 00:09:44,339 and see how the insects react I can't do 263 00:09:47,810 --> 00:09:46,230 that great question though it's been 264 00:09:49,519 --> 00:09:47,820 talked about for many many years the 265 00:09:51,079 --> 00:09:49,529 reason why is if you take a look at the 266 00:09:52,640 --> 00:09:51,089 vibrational frequencies of a given 267 00:09:54,590 --> 00:09:52,650 pheromone molecule does more than one 268 00:09:57,980 --> 00:09:54,600 there's more than two there's more than