From ReactomeWiki

Remote Attribute Search Tool

This tool can be used to search within a data class for instances with specified attributes (or with specified attributes of attributes). For example you can search for all reactions whose input includes complexes containing a given ReferenceEntity.

http://reactomedev.oicr.on.ca/cgi-bin/remoteattsearch2

or on live site:

http://www.reactome.org/cgi-bin/remoteattsearch2?DB=gk_current

Remoteattsearch examples

On the dev site:

http://reactomedev.oicr.on.ca/cgi-bin/remoteattsearch2

or on live site:

http://www.reactome.org/cgi-bin/remoteattsearch2?DB=gk_current

1. Simple

class - EWAS
hasModifiedResidue
psiMod
name (regex) phospho

Produces 7797 matches.

This lists EWASs as that is class you queried.

Choose to display results as custom table showing:
DB_ID
name[0] (this limits to 1st name)
name (this prints off all names separated by pipes)

Like this
DB_ID name
450353 MKK7-P|MAP kinase kinase 7
165685 4E-BP1-P

2. ADD an additional filter example

class - ReactionlikeEvent
hasMember
name (regex) - cyclin -> 6 matches
AND
compartment
name (regex) - cytosol -> 1 match

3. Upstream example
class EWAS
hasComponent:Complex
name regex alcohol
-> 20 matches
AND
species name regex sapiens
-> 6 matches