how many enzymes do we have and how can i find out all of their names it dont seem to be anywhere on internet?

Answer 1

Many, many enzymes. Yours is a good question, but the answers are not so easy to achieve. The Enzyme Commission lists 3665 different classifications of enzyme catalyzed reactions (the number of enzymes will be greater) which you can view online or copy/paste into MS Excel (http://www.geneontology.org/external2go/ec2go). You may also want to look at http://en.wikipedia.org/wiki/List_of_enzymes

I regret to have to answer that there is no absolute and precise number to give you right now. I will make a very rough estimate at between 5000-12,000 enzymes in humans, but I will try to narrow this down and get some more validation. It is actually nearly impossible to get a precise number at this point in time. The reason is that the function of most of the approximately 30-50,000 proteins (from 22-35,000 genes) in the human body are not yet well understood, so for many of these proteins which ones are enzymes and which ones have other non-enzymatic functions is not certain. Because genes (DNA) is easier to work with, at this point in time we know all the genes in humans and can predict the proteins they encode, but in many, many cases can't deduce the function of the proteins encoded. At this point in time, the strategy for approximating the number of enzymes in humans is using bioinformatics (a new scientific area at the intersection of biology, computer sciences and statistics) to predict the function of these poorly understood proteins.... and then count them up. The complete sequencing of the human genome, all the genes in humans, is the essential tool that allows scientists to answer questions such as yours. I will send you to two web sites which are tools bioinformaticians would use to answer your question: www.geneontology.org, http://www.ncbi.nlm.nih.gov/RefSeq/ and http://www.ncbi.nlm.nih.gov/gquery/gquery.fcgi?itool=toolbar.

Answer 2

There are too many enzymes to list and new ones are found all the time. There are also diferent types of enzyme, some are simpleproteins, some contain metal centres such as zinc or iron, some have sugars attached etc.

there would be no list of all of them at the moment and if there was most of the names would be codes along the lines of ADH-4323 or something

Answer 3

First of all, are you speaking of the enzymes from humans or cattle or rats or plants...etc? And even if you pinpoint which organism you want all the enzymes for, you need to know that not all enzymes are known for most organisms, and that's why you can't find a source. There are thousands if not more of them for each organism, and you need to probably be more specific in what you are looking for, such as starch enzymes or lipid biosynthesis enzymes etc.

Answer 4

Expasy, put this into google, click onto the first one. This site allows you to research into many known enzymes whether they belong to humans or bacteria. Pop one that your interested in whether it is bacterial enzymes or not and you can find all the information you need on it, such as the human equivelant, or simply the reaction it catalyses.

Answer 5

i dont really know the exact number but i think its sumwer around 3 trillion enzymes in a human body....well dats wat it said in my text book