PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
1660880-1	1991	Recombinant human myoglobin mutants with the distal histidine residue replaced by Leu, Val, or Gln residues have been prepared by site-directed mutagenesis and expression in Escherichia coli.	Leucine	82-85	myoglobin	Homo sapiens	18-27	
1660880-5	1991	To our surprise, the distal Leu mutant has a less restricted, less sterically crowded distal heme pocket than that of the distal Val mutant myoglobin, despite the fact that Leu has a larger side chain volume than Val.	Leucine	28-31	myoglobin	Homo sapiens	140-149	
1660880-5	1991	To our surprise, the distal Leu mutant has a less restricted, less sterically crowded distal heme pocket than that of the distal Val mutant myoglobin, despite the fact that Leu has a larger side chain volume than Val.	Leucine	173-176	myoglobin	Homo sapiens	140-149