Contacts of the helix formed by residues 295 - 304 (chain A) in PDB entry 1L4E
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with GLY 295 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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187A VAL* 4.7 1.4 - - - +
197A GLU 4.0 2.9 - - - -
198A VAL* 3.9 28.3 + - - -
265A PHE* 3.5 23.0 - - - -
293A GLU* 3.3 3.6 - - - +
294A LYS* 1.3 78.6 - - - +
296A ALA* 1.3 64.0 + - - +
297A ARG 3.4 1.1 - - - -
298A ILE* 3.4 8.2 + - - +
299A ALA* 3.1 17.8 + - - +
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Residues in contact with ALA 296 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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265A PHE* 3.9 3.7 - - - -
268A TYR* 3.7 28.0 - - + -
290A PHE* 4.1 8.5 - - + -
291A SER* 3.4 24.5 - - - +
293A GLU* 3.1 20.6 + - + +
294A LYS 3.2 0.4 - - - -
295A GLY* 1.3 75.7 - - - +
297A ARG* 1.3 64.6 + - - +
299A ALA* 3.3 1.6 + - - +
300A LEU* 3.0 30.4 + - - +
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Residues in contact with ARG 297 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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290A PHE* 3.7 43.3 - - + -
294A LYS 4.4 5.2 + - - +
295A GLY 3.4 0.8 - - - -
296A ALA* 1.3 78.5 - - - +
298A ILE* 1.3 66.0 + - + +
300A LEU* 3.6 2.4 + - - +
301A ALA* 3.1 24.5 + - + +
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Residues in contact with ILE 298 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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187A VAL* 4.7 4.9 - - + -
191A THR* 3.8 14.1 - - + +
193A SER* 3.5 24.5 - - - +
197A GLU* 3.8 39.0 - - + +
198A VAL* 4.0 11.0 - - + -
294A LYS 5.4 1.8 + - - +
295A GLY* 3.4 9.7 + - - +
296A ALA 3.3 0.4 - - - -
297A ARG* 1.3 77.4 - - + +
299A ALA* 1.3 66.7 + - - +
301A ALA* 3.3 4.4 + - - +
302A HIS* 3.0 40.8 + - + +
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Residues in contact with ALA 299 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
187A VAL* 4.4 14.1 - - + +
191A THR* 4.9 0.4 - - - -
265A PHE* 4.5 1.3 - - + -
268A TYR* 3.7 28.7 - - + -
272A LEU* 4.2 17.9 - - + +
295A GLY 3.1 15.7 + - - +
296A ALA 3.8 3.1 - - - +
298A ILE* 1.3 81.9 - - - +
300A LEU* 1.3 62.7 + - - +
302A HIS* 3.3 5.4 + - - +
303A LEU* 3.0 28.4 + - - +
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Residues in contact with LEU 300 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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268A TYR* 3.7 43.5 - - + +
287A PRO* 5.4 1.1 - - + -
290A PHE* 3.9 28.9 - - + -
296A ALA 3.0 20.6 + - - +
297A ARG* 4.0 3.8 - - - +
299A ALA* 1.3 73.2 - - - +
301A ALA* 1.3 60.2 + - - +
303A LEU* 3.1 5.2 + - + +
304A SER 2.9 23.4 + - - -
305A MET* 3.0 45.8 + - + +
307A PRO* 3.7 29.4 - - + -
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Residues in contact with ALA 301 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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297A ARG* 3.1 20.9 + - + +
298A ILE* 3.7 7.0 - - - +
299A ALA 3.3 0.2 - - - -
300A LEU* 1.3 76.0 - - - +
302A HIS* 1.3 67.1 + - + +
304A SER* 3.1 18.3 + - - +
305A MET 5.2 0.4 - - - +
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Residues in contact with HIS 302 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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190A PHE 4.8 2.4 + - - -
191A THR* 3.4 53.4 + - + +
193A SER* 4.9 1.0 + - - -
272A LEU* 4.1 12.6 - - + +
298A ILE* 3.0 33.8 + - + +
299A ALA 3.8 4.9 - - - +
300A LEU 3.2 0.4 - - - -
301A ALA* 1.3 81.9 - - + +
303A LEU* 1.3 60.2 + - - +
304A SER* 3.3 3.5 + - - -
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Residues in contact with LEU 303 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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262A LEU* 5.7 0.7 - - + -
268A TYR* 3.8 19.7 - - + +
271A ALA* 4.1 26.7 - - + +
272A LEU* 3.4 36.3 - - + +
275A CYS* 4.3 16.8 - - + -
282A ARG* 2.7 37.9 + - + +
299A ALA 3.0 27.2 + - - +
300A LEU* 3.1 10.5 + - + +
302A HIS* 1.3 77.0 - - - +
304A SER* 1.3 58.1 + - - +
305A MET* 4.0 23.6 - - + -
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Residues in contact with SER 304 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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282A ARG* 2.8 14.2 + - - -
300A LEU 2.9 5.6 + - - -
301A ALA* 3.1 14.4 + - - +
302A HIS 4.6 2.4 + - - -
303A LEU* 1.3 80.1 - - - +
305A MET* 1.3 57.5 + - - +
306A GLU 4.5 0.3 + - - -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il