diff --git a/src/mol-io/reader/_spec/psf.spec.ts b/src/mol-io/reader/_spec/psf.spec.ts
index 86a006093a5ffc5d340272073647f2e1bedc8cde..9aac7aad8d8b15dd9743cdbcdadf4dc565562ad2 100644
--- a/src/mol-io/reader/_spec/psf.spec.ts
+++ b/src/mol-io/reader/_spec/psf.spec.ts
@@ -8,66 +8,66 @@ import { parsePsf } from '../psf/parser';
const psfString = `PSF CMAP CHEQ
-2 !NTITLE
-* BETA HARPIN IN IMPLICIT SOLVENT
-* DATE: 11/22/10 16:54: 9 CREATED BY USER: aokur
+ 2 !NTITLE
+* BETA HARPIN IN IMPLICIT SOLVENT
+* DATE: 11/22/10 16:54: 9 CREATED BY USER: aokur
-42 !NATOM
-1 ALA3 1 ALA CAY 24 -0.270000 12.0110 0 0.00000 -0.301140E-02
-2 ALA3 1 ALA HY1 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
-3 ALA3 1 ALA HY2 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
-4 ALA3 1 ALA HY3 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
-5 ALA3 1 ALA CY 20 0.510000 12.0110 0 0.00000 -0.301140E-02
-6 ALA3 1 ALA OY 70 -0.510000 15.9990 0 0.00000 -0.301140E-02
-7 ALA3 1 ALA N 54 -0.470000 14.0070 0 0.00000 -0.301140E-02
-8 ALA3 1 ALA HN 1 0.310000 1.00800 0 0.00000 -0.301140E-02
-9 ALA3 1 ALA CA 22 0.700000E-01 12.0110 0 0.00000 -0.301140E-02
-10 ALA3 1 ALA HA 6 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
-11 ALA3 1 ALA CB 24 -0.270000 12.0110 0 0.00000 -0.301140E-02
-12 ALA3 1 ALA HB1 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
-13 ALA3 1 ALA HB2 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
-14 ALA3 1 ALA HB3 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
-15 ALA3 1 ALA C 20 0.510000 12.0110 0 0.00000 -0.301140E-02
-16 ALA3 1 ALA O 70 -0.510000 15.9990 0 0.00000 -0.301140E-02
-17 ALA3 2 ALA N 54 -0.470000 14.0070 0 0.00000 -0.301140E-02
-18 ALA3 2 ALA HN 1 0.310000 1.00800 0 0.00000 -0.301140E-02
-19 ALA3 2 ALA CA 22 0.700000E-01 12.0110 0 0.00000 -0.301140E-02
-20 ALA3 2 ALA HA 6 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
-21 ALA3 2 ALA CB 24 -0.270000 12.0110 0 0.00000 -0.301140E-02
-22 ALA3 2 ALA HB1 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
-23 ALA3 2 ALA HB2 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
-24 ALA3 2 ALA HB3 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
-25 ALA3 2 ALA C 20 0.510000 12.0110 0 0.00000 -0.301140E-02
-26 ALA3 2 ALA O 70 -0.510000 15.9990 0 0.00000 -0.301140E-02
-27 ALA3 3 ALA N 54 -0.470000 14.0070 0 0.00000 -0.301140E-02
-28 ALA3 3 ALA HN 1 0.310000 1.00800 0 0.00000 -0.301140E-02
-29 ALA3 3 ALA CA 22 0.700000E-01 12.0110 0 0.00000 -0.301140E-02
-30 ALA3 3 ALA HA 6 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
-31 ALA3 3 ALA CB 24 -0.270000 12.0110 0 0.00000 -0.301140E-02
-32 ALA3 3 ALA HB1 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
-33 ALA3 3 ALA HB2 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
-34 ALA3 3 ALA HB3 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
-35 ALA3 3 ALA C 20 0.510000 12.0110 0 0.00000 -0.301140E-02
-36 ALA3 3 ALA O 70 -0.510000 15.9990 0 0.00000 -0.301140E-02
-37 ALA3 3 ALA NT 54 -0.470000 14.0070 0 0.00000 -0.301140E-02
-38 ALA3 3 ALA HNT 1 0.310000 1.00800 0 0.00000 -0.301140E-02
-39 ALA3 3 ALA CAT 24 -0.110000 12.0110 0 0.00000 -0.301140E-02
-40 ALA3 3 ALA HT1 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
-41 ALA3 3 ALA HT2 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
-42 ALA3 3 ALA HT3 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
+ 42 !NATOM
+ 1 ALA3 1 ALA CAY 24 -0.270000 12.0110 0 0.00000 -0.301140E-02
+ 2 ALA3 1 ALA HY1 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
+ 3 ALA3 1 ALA HY2 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
+ 4 ALA3 1 ALA HY3 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
+ 5 ALA3 1 ALA CY 20 0.510000 12.0110 0 0.00000 -0.301140E-02
+ 6 ALA3 1 ALA OY 70 -0.510000 15.9990 0 0.00000 -0.301140E-02
+ 7 ALA3 1 ALA N 54 -0.470000 14.0070 0 0.00000 -0.301140E-02
+ 8 ALA3 1 ALA HN 1 0.310000 1.00800 0 0.00000 -0.301140E-02
+ 9 ALA3 1 ALA CA 22 0.700000E-01 12.0110 0 0.00000 -0.301140E-02
+ 10 ALA3 1 ALA HA 6 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
+ 11 ALA3 1 ALA CB 24 -0.270000 12.0110 0 0.00000 -0.301140E-02
+ 12 ALA3 1 ALA HB1 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
+ 13 ALA3 1 ALA HB2 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
+ 14 ALA3 1 ALA HB3 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
+ 15 ALA3 1 ALA C 20 0.510000 12.0110 0 0.00000 -0.301140E-02
+ 16 ALA3 1 ALA O 70 -0.510000 15.9990 0 0.00000 -0.301140E-02
+ 17 ALA3 2 ALA N 54 -0.470000 14.0070 0 0.00000 -0.301140E-02
+ 18 ALA3 2 ALA HN 1 0.310000 1.00800 0 0.00000 -0.301140E-02
+ 19 ALA3 2 ALA CA 22 0.700000E-01 12.0110 0 0.00000 -0.301140E-02
+ 20 ALA3 2 ALA HA 6 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
+ 21 ALA3 2 ALA CB 24 -0.270000 12.0110 0 0.00000 -0.301140E-02
+ 22 ALA3 2 ALA HB1 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
+ 23 ALA3 2 ALA HB2 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
+ 24 ALA3 2 ALA HB3 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
+ 25 ALA3 2 ALA C 20 0.510000 12.0110 0 0.00000 -0.301140E-02
+ 26 ALA3 2 ALA O 70 -0.510000 15.9990 0 0.00000 -0.301140E-02
+ 27 ALA3 3 ALA N 54 -0.470000 14.0070 0 0.00000 -0.301140E-02
+ 28 ALA3 3 ALA HN 1 0.310000 1.00800 0 0.00000 -0.301140E-02
+ 29 ALA3 3 ALA CA 22 0.700000E-01 12.0110 0 0.00000 -0.301140E-02
+ 30 ALA3 3 ALA HA 6 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
+ 31 ALA3 3 ALA CB 24 -0.270000 12.0110 0 0.00000 -0.301140E-02
+ 32 ALA3 3 ALA HB1 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
+ 33 ALA3 3 ALA HB2 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
+ 34 ALA3 3 ALA HB3 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
+ 35 ALA3 3 ALA C 20 0.510000 12.0110 0 0.00000 -0.301140E-02
+ 36 ALA3 3 ALA O 70 -0.510000 15.9990 0 0.00000 -0.301140E-02
+ 37 ALA3 3 ALA NT 54 -0.470000 14.0070 0 0.00000 -0.301140E-02
+ 38 ALA3 3 ALA HNT 1 0.310000 1.00800 0 0.00000 -0.301140E-02
+ 39 ALA3 3 ALA CAT 24 -0.110000 12.0110 0 0.00000 -0.301140E-02
+ 40 ALA3 3 ALA HT1 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
+ 41 ALA3 3 ALA HT2 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
+ 42 ALA3 3 ALA HT3 3 0.900000E-01 1.00800 0 0.00000 -0.301140E-02
-41 !NBOND: bonds
-5 1 5 7 1 2 1 3
-1 4 6 5 11 9 7 8
-7 9 15 9 15 17 9 10
-11 12 11 13 11 14 16 15
-21 19 17 18 17 19 25 19
-25 27 19 20 21 22 21 23
-21 24 26 25 31 29 27 28
-27 29 35 29 29 30 31 32
-31 33 31 34 36 35 35 37
-37 38 37 39 39 40 39 41
-39 42
+ 41 !NBOND: bonds
+ 5 1 5 7 1 2 1 3
+ 1 4 6 5 11 9 7 8
+ 7 9 15 9 15 17 9 10
+ 11 12 11 13 11 14 16 15
+ 21 19 17 18 17 19 25 19
+ 25 27 19 20 21 22 21 23
+ 21 24 26 25 31 29 27 28
+ 27 29 35 29 29 30 31 32
+ 31 33 31 34 36 35 35 37
+ 37 38 37 39 39 40 39 41
+ 39 42
`
describe('psf reader', () => {
diff --git a/src/mol-io/reader/psf/parser.ts b/src/mol-io/reader/psf/parser.ts
index 2a86e20683555cb7b5fd029610f2a8f0429f1204..8d49708b90ece98f04ae5f41c238d59af48d3728 100644
--- a/src/mol-io/reader/psf/parser.ts
+++ b/src/mol-io/reader/psf/parser.ts
@@ -151,7 +151,7 @@ async function parseInternal(data: string, ctx: RuntimeContext): Promise<Result<
const id = readLine(state.tokenizer).trim()
while(tokenizer.tokenEnd < tokenizer.length) {
- const line = readLine(state.tokenizer)
+ const line = readLine(state.tokenizer).trim()
if (line.includes('!NTITLE')) {
const numTitle = parseInt(line.split(reWhitespace)[0])
title = parseTitle(state, numTitle)