Contacts of the helix formed by residues 512 - 516 (chain A) in PDB entry 1OFD
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 GLU 512 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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347A ASN* 4.4 12.3 - - - +
507A ILE* 5.1 9.9 - - + +
508A ASP* 3.0 27.8 + - + +
511A ARG* 1.3 77.8 - - + +
513A ASN* 1.3 64.1 + - - +
514A LEU* 3.1 11.8 + - + -
515A VAL* 3.3 24.6 + - + +
516A MET* 3.9 4.4 - - - +
1007A HIS* 3.8 8.5 + - - -
1382A ARG* 3.1 32.8 + - - -
1400A HIS* 3.8 23.6 + - + -
1403A GLU* 2.7 33.3 - - - +
1404A TYR* 4.5 1.7 + - - -
1419A ASN* 3.8 0.2 - - - +
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Residues in contact with ASN 513 (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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508A ASP 3.6 3.0 + - - -
509A PRO 3.0 14.4 - - - +
510A LEU* 3.4 12.4 + - - +
511A ARG 3.5 0.6 - - - -
512A GLU* 1.3 77.2 - - - +
514A LEU* 1.3 57.3 + - - +
515A VAL 3.0 0.2 - - - -
516A MET* 2.9 55.1 + - - +
712A PHE* 3.4 31.4 - - - -
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Residues in contact with LEU 514 (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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299A ALA* 5.2 1.0 - - - +
301A LYS* 4.3 19.4 - - - +
302A ASN* 4.6 26.3 + - + +
511A ARG 5.2 0.4 + - - +
512A GLU* 3.1 23.7 - - + +
513A ASN* 1.3 77.9 - - - +
515A VAL* 1.3 75.9 + - + +
516A MET 3.4 3.8 + - - +
1400A HIS* 4.6 5.4 - - + -
1418A ARG* 3.7 45.8 + - + +
1419A ASN* 4.0 33.2 - - + +
1443A ASN* 5.8 0.2 - - - +
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Residues in contact with VAL 515 (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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299A ALA* 3.8 13.2 - - + -
346A ARG* 3.0 32.5 + - - +
347A ASN* 3.1 32.8 - - - +
386A PRO* 6.4 0.2 - - + -
507A ILE* 4.4 4.5 - - + -
512A GLU* 3.5 17.0 - - + +
513A ASN 3.0 0.4 - - - -
514A LEU* 1.3 86.5 - - + +
516A MET* 1.3 64.1 + - + +
721A SER* 3.3 21.7 - - - +
1400A HIS* 5.7 4.7 - - + +
1418A ARG* 3.8 23.1 - - - +
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Residues in contact with MET 516 (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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507A ILE* 4.0 29.6 - - + -
508A ASP 4.8 0.2 - - - +
509A PRO* 3.2 35.9 - - + +
512A GLU 3.9 8.1 - - - +
513A ASN* 2.9 46.9 + - - +
514A LEU 4.4 4.2 - - - +
515A VAL* 1.3 83.8 - - - +
517A SER* 1.3 64.9 + - - +
712A PHE* 3.3 35.7 - - + +
715A LEU* 5.6 1.1 - - - -
716A SER* 4.6 0.7 - - - -
720A ILE 4.6 4.9 - - - +
721A SER* 3.2 14.8 - - - +
722A LEU* 4.3 0.2 - - - -
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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