Genes/Proteins - (Aug/04/2007 )

Hi there,

Just wondering-if a gene codes for a protein and a protein is made up of "X" amino acids well where/what in the genome is the coding for those amino acids that make up that protein?

Cheers,
biology_06er

can't understand your Q, what do u mean! !

you can't predict where in the human genome where may be located the gene just by knowing the protein sequence.
You can be sure that it's ont in telomeres and in centromeres for sure, but for the rest no.
I hope i understood your question.

THere is no rhyme or reason.

A gene may be anywhere in the genome (aside from the telemore or centromeres). In fact, a gene family (a group of genes with shared descend) need not even be in the same place. The family can be scattered all over the genome. Only in bacteria with their small sleak genomes, do genes have some slight resemblence of order... highly expressed genes tend to be close to the origin of replication and genes that work together (in the same biochemical pathway) then to stay together. This is an out come of, bacteria's circular genome, high rates of genome recombination and fast growth rates.

But in animals or plants, there is no order. It is a total mess. A badly fragment harddrive would have more order.

hmm wat i mean is that if a gene codes for protein Y and protein Y has 30 amino acids does that mean that gene has a sequence of many many nucleotide base pairs that encode each one of those amino acids?

Hope that makes sense?

Hi there,

yep just found what I was looking for in my textbook...

cheers,
biology_06er