EGGNOG Functional Assignment

Dear Sir,

The aim of my study is to see the enzymes in my metagenome for example, chitinase,
First of all,
There are many repeats of this name for different COG number and different reads assigned
What does it mean?
Secondly, clicking on particular node and its alignment gives 29 reference sequences, after the accession no. what is written in numeric form is not clear I mean WP_01170625.1:: 131
(screenshot attached)
Third, I want to know the sequence of protein to which reads have been mapped.

Please help at the earliest.


Please reply since my further analysis awaits your suggestions.