[Chimera-users] Letter Reference for Amino Acid Atoms

Hi, My name is Sarah Himes. I'm a graduate student at the University of Maryland. I'm researching alkaline phosphatase for an advanced course. I'm using the file 1ALK in Chimera. I'm pretty familiar with Chimera but I had a question regarding the letter notation of amino acid atoms when you scroll over them. Here are some examples: His370 (NE2) Ser102 (CB) Ser102 (N) Asp327 (OD1) Asp327 (OD2) Glu322 (OE2) My question is, what do the letters in parentheses mean, what do they correspond to? When these letters show up in Chimera, there are no parentheses. I look forward to hearing from you shortly. Thank you for your time. Sincerely, Sarah Himes shimes@umd.edu 240-285-1251