Chromosomes of prokaryotes consist of both dna and protein or they only contain dna and have no protein?

In Eukaryotic nucleus, DNA is packaged with help of histone and non histone proteins.
Prokaryotes do not have histone proteins. The types of proteins found in prokaryotic chromosomes are different which are known as the nucleoid-associated proteins, and cause the prokaryotic chromosomes to form looped structures.