Johnson said: "It was right and proper that the coaches considered captaincy at the same time as we were looking at selection of our squad for the England game.
"We believe Kelly has the qualities we're looking for to captain Scotland. Captaincy is about deed in my book, not Churchillian oratory, and the knowledge and experience that Kelly brings to the Test match arena is good for this team. We are also looking at our leadership group and I'll be naming two vice-captains in the team that we announce tomorrow."
The 52-times capped Brown (Saracens) has not played against England since the corresponding match at Twickenham two years ago.
"As I said back in November, it's a huge honour to captain Scotland. The job now, though, is to work with all the other players in the squad to deliver a performance to make the country proud this weekend.
"It's a while since I've played against England. I missed out through injury in last year's Six Nations and I was sidelined during the Rugby World Cup match in Auckland as well, so I'm really raring to go," Brown said.
Johnson has trimmed the squad that were in camp last week from 35 to 27, all of whom will remain attached to the national team with none featuring on Scotland A duty.
The only addition to those who were in Glasgow last week is flanker Alasdair Strokosch who was excused the camp as his wife gave birth to their second child.
Revised Scotland squad for the opening RBS 6 Nations Championship game against England on Saturday (2 February) at Twickenham, kick-off 4pm:
Backs - Max Evans (Castres), Stuart Hogg, Peter Horne, Ruaridh Jackson (all Glasgow Warriors), Greig Laidlaw (Edinburgh Rugby), Sean Lamont, Sean Maitland, Peter Murchie, Henry Pyrgos (all Glasgow Warriors), Matt Scott and Tim Visser (both Edinburgh Rugby)
Forwards - Johnnie Beattie (Montpellier), Kelly Brown (Saracens), Geoff Cross, David Denton, Ross Ford, Grant Gilchrist (all Edinburgh), Ryan Grant (Glasgow Warriors), Richie Gray (Sale Sharks), Dougie Hall (Glasgow Warriors), Jim Hamilton (Gloucester), Robert Harley, Alastair Kellock, Moray Low, Pat MacArthur (all Glasgow Warriors), Euan Murray (Worcester Warriors) and Alasdair Strokosoch (Perpignan).
For further information please contact:
Graham Law, Scotland team media manager
Tel: +44 (0)131 346 5164; M: +44 (0)7764 178940
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