Texas med schools tend to be a little more GPA-centered than average, so your UG school could be very important. You said 'prestigious'. Is it also a known grade deflator? (Think MIT, CalTech, Cornell, UC Berkeley)
If not, the questions I would have pertain to your work ethic and consistency. (Hmmm, this person's clearly very bright -- but why the low GPA? Immature? Partier? Emotional health issues?)
Strive to address those concerns in your essays.