TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preparation (Claimed): No preparation method is given. Preferred Protein: The protein further comprises lignase. Preferred Method: The hydrolysis of cellulose is in the conversion to ethanol or other biofuel. The cellulase is one which has been isolated from bacteria, fungi, Trichoderma sp., Aspergillus sp. or Humicol sp.. The cellulase is chosen from Trichoderma cellulase, endoglucanase V from Thermomonospora fusca, the catalytic domain of endoglucanase V from T.fusca, the catalytic core of endoglucanase V from Humicola insolens, endoglucanase I (Cel7A) from T.reesei, cellobiohydrolase I (Cel7B) from T.reesei, and endoglucanase 1 from Acidothermus cellulolyticus. The cellulose is present in wood, paper or plant cell wall. The GR2 protein is one from pfam01357. The GR2 protein is a group 2 grass pollen allergen protein. The GR2 protan is a group 3 grass pollen allergen. The GR2 protein is recombinant. The GR2 protein contains the domain 2 of an expansin protein and is not an expansin. The protein is a protein deposited under NCBI Accession#PI 4947, Lol p3, Ph1 p2, Zea m2 and Zea m3. In the altering method, the cellulosic material is paper, cloth, composites or wood. The GR2 is produced in plants. In the method of improving the enzymatic hydrolysis, the cellulase and GR2 protein is added in the form of natural or recombinant chimeric protein containing both cellulase and GR2 domains. WIDER DISCLOSURE - Also disclosed as new are:    (A) GR2 protein;    (B) nucleic acid encoding GR2 protein;    (C) expression vector containing nucleotide sequence encoding GR2 protein; and    (D) host cell containing the expression vector.    EXAMPLE - Frozen maize pollen (10 g) was extracted with sodium acetate (40 ml; 50 mM; pH 4.5) for 1 hour at 4degreesC. The extract was centrifuged at 14000 g at 4degreesC and then loaded into a CM-sepharose column equilibrated with sodium acetate (20 mM, pH 4.5). The column was washed with the same buffer until absorbance at 280 nm returned to baseline. Protein was eluted at 1 ml/minute with a linear gradient of sodium chloride (0-500 mM in 6 hours) fractions were collected at 5 ml per tube. Samples were de-salted and loaded onto sodium dodecyl sulfate-polyacrylamide gel electrophoresis. A large band of ~10 kD GR2 protein was obtained. The ~10 kD GR2 protein and cellulase (E5cd: a catalytic domain of endoglucanase 5 derived from Thermomonospora fusca and Zea m3, and EG1: Endoglucanase I (Ce17A) from Trichoderma reesei) were treated with avicel and Whatmann filter paper. Results showed that 137.6plus minus1.0(19.2) micrograms and 49.7plus minus2.9(6.0) micrograms of sugar was released from Whatmann filter paper and avicel on treatment with the above respective enzymes.