Exhibit 99.49 MBNA MASTER CREDIT CARD TRUST II SERIES 2000-E KEY PERFORMANCE FACTORS July 31, 2000 Expected B Maturity 05/17/2010 Blended Coupon 7.9030% Excess Protection Level 3 Month Average 3.59% July, 2000 5.78% June, 2000 1.40% May, 2000 N/A Cash Yield19.22% Investor Charge Offs 4.57% Base Rate 8.87% Over 30 Day Delinquency 4.81% Seller's Interest11.87% Total Payment Rate14.13% Total Principal Balance$55,010,319,976.67 Investor Participation Amount$590,000,000.00 Seller Participation Amount$6,529,119,458.18