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Thanks its really helpful... Now due to different given production methods u have both + & - types...but there will be a % stereospecificity resulting out of this. NOw all this specificity is induced by the stereospecificity of proteins...But in proteins stability of its structure induces almost 100% stereospecificity for AAs in them...which i think i'll call self-induced stereospecificity for proteins...isn't anysuch thing there for carbohydrates...lipids etc.? Waiting for ur help... hrushikesh

Thanks, now it's clear abt proteins...but i's reffering to stereoselectivity in case of groups other than proteins...So the q was is this stereospecificity specific for class proteins or its everywhere. For carbohydrates as a class there may or may not be just D or just L sugars as 'natural' ones... for some reactions D wd be natural & for others the Ls...m i correct? hrushikesh

Sorry for late reply, here i've furthered some of my brain-kinks! See for a given enzyme, if it acts on n substrates & carrying out a given process in a given specific way, if all of substrates except one & the enzymes are both chemo- & stereofixed, then the remaining molecule will also be fixed. We can just say that it is fixed, eg. if an enzyme catalyses degradation of a sugar, then for that enzyme & that process etc etc. the sugar will be stereofixed. Say its a D-carbohydrate. But for enzyme-process set of some other kind , L-carbohydrates may be being stereofixed. In brief, i mean, for a given enzyme & process D or L is fixed, but we may not have the 'same' [ i.e. either D or L] stereofixation even if the molecule is of carbohydrate class. Hope u get what i'm asking... hrushikesh

Thanks, Now, i meant how much is the specificity [ i.e. strictly D or 70% D etc etc] for other molecules... For given molecule , its very likely that the system accepts a single stereo as all enzymezes receptors have L-AAs only, but for another molecule of same class[ eg. carbohydrates] it may accept another stereo! So, the stereospecificity is for the given molecule definitely, but don't know if is it for all of the same class as in proteins... help... & Yes,it answers something... nice style by the way! hrushikesh

WERE U Using 'really' DISTILLED WATER??? If not, then any reactions are possible...

sorry, i didn't meant to hurt u, sorry again. ONe more thing- writing 'he/she' kind of sounds bad...do u get?

Penis is just like other body parts tells that each part is much equally specialized...but she is asking abt how that specialization is regulated, right augment in humans?

First of all thanks for ur reply & the info, no body helped me abt it otherplaces. We observe conformational specificity for Amino Acids, My question was is such kind of stereo specificity observed for carbohydrate/ lipid/ DNA/RNA subunits i.e. is that specificity is specific for proteins or is it present in other molecules of life too? & if yes was it by chance & if yes how do we disprove the presence of any selective pressure in earlier environments..? Also , what is the degree of specificity? I mean , what is the percentage of D-AA proteins & L-AA proteins, & how much is it for other biomolecules...Are there diff. enzymes/ pumps for them? See , this required a biochem geek, which i'm not yet...i don't get these %s from anywhere, the option was to screen data bases on http://WWW...if i do that these days, i'm sure that i'll fail in my regular class exams, if anybody knows then its too nice...& if not i'll go for it but i'll not overdo it, right sir? Thanks again, hrushikesh

First of all thanks for ur reply & the info, no body helped me abt it otherplaces. We observe conformational specificity for Amino Acids, My question was is such kind of stereo specificity observed for carbohydrate/ lipid/ DNA/RNA subunits i.e. is that specificity is specific for proteins or is it present in other molecules of life too? & if yes was it by chance & if yes how do we disprove the presence of any selective pressure in earlier environments..? Also , what is the degree of specificity? I mean , what is the percentage of D-AA proteins & L-AA proteins, & how much is it for other biomolecules...Are there diff. enzymes/ pumps for them? See , this required a biochem geek, which i'm not yet...i don't get these %s from anywhere, the option was to screen data bases on http://WWW...if i do that these days, i'm sure that i'll fail in my regular class exams, if anybody knows then its too nice...& if not i'll go for it but i'll not overdo it, right sir? hrushikesh

INtelligent point by Yggdrasil abt temp... another pt may be diff conc.s of diff. salts etc. in both , then when they are mixed some temp. changes may occur to change the volume...bad instru u've got to use:embarass: After all science is approximately true, where the approximation is approximately allowable!

Here in Bharat, people called aryan have blackish skin, blackish eyes, but many have light colour of skin & blue eyes too. No one is pure today so obvious. This is like creating curiosity & then just leaving the topic! Just one blonde... i mean individual is very unscientific & unsatiesfactory... please send more clearer photos...

For proteins, living systems are specific for L-AAs but for carbohydrates that degree of specificity is not observed...how do we explain it in the context of evolution..? Also please tell me what is the degree of specificity for D-sugars & L-AAs...i mean when the specificity can be violated naturally, i'm interested in knowing that... I got that D-Alanine is a bacterial marker [ i guess due to its role in murein formation of bacterial cell wall] but i don't know if any 'polypeps' contain D-AAs , & if yes ...upto what extent & all... Similar querries for L glucose...& alph & beta sugars... Please help me... i'm searching the web...suggest any good links too... Thanking you in advance, hrushikesh

What does tell it to stop grow...is it reduced testosterone...or nervous stimuli??? BTW, a slap received is a nervous stimulous too!!! Just kidding once more!

Tesosterone activating the 'let grow' gene..? hope this is th ehormone to gene connection ur looking for! Fingersize? lets compare!!! Any expts I can Do...augment? Just kidding!

If you get wesay that NOah is the root genome then we should calculate howmany point mutations are there genome & then the time required to them can be predicted when we know the rate of % mutations ... & if DNAsfrom differnt organisms give different '--years ago' figure then we should conclude Noah thing is not yet proved. & WE DON"T HAVE NOAHhian genometo compare it with anything!!! What I meant by my scentense was we can't sit calm as science people ' date='by saying God did it... God(s) is/r to be proved & how they did it and God's origin and evolution should also be studied!!! Logos is all about this just queswtioning everything! If God is not found tobe there, we would just see how life did evolve by itself...the no. of qs is reduced! & should u have any more questions on what i said, I'llanswer them with chaw! hrushikesh